fix: stabilize background operations and large embedding results

.gitignore

@@ -18,6 +18,7 @@ backend/.env
 # 运行期生成的 SQLite 索引（vault 下的 Markdown 测试数据需提交）
 backend/data/*.db*
 backend/data/credentials/
+backend/data/logs/
 # 阶段验收笔记（验收用，不提交）
 backend/data/vault/验收/
 # 本机 MCP 配置、授权状态及服务器工作目录不得提交。

README.md

@@ -26,6 +26,7 @@ NotesAgent/
 - 多模态：API 优先，未配置或响应无效时回退本地；`local_only` 禁止远程调用。任务、修订、事件、来源和回退原因写入 SQLite。
 - 模型运行：默认 CPU，可选 CUDA 12.8 组件；固定模型 revision，按需启动独立子进程，交互检索优先排队，CUDA 初始化或显存失败时用同一冻结配置在 CPU 重试一次。
 - 可观测性：输入、输出、缓存命中、推理 Token 与音频用量卡片；本地运行诊断保留最近 200 条，不保存正文、文件路径、密钥或异常全文。
+- 运行日志：统一查看向量/模型错误、Agent、任务与 HTTP 操作；独立后台存储最近 20,000 条，支持错误码/关联 ID 筛选和游标分页。入口无需打开 Vault，详见 [后台运行日志与压力问题修复](docs/development/后台运行日志与压力问题修复.md)。
 - 界面偏好：设置页可即时切换全局中文/英文界面，并控制由系统词典提供的编辑器拼写检查；偏好目前保存于 Web 端设备配置，后续由 Tauri 配置存储接管。
 
 ## 第二阶段最新合并（2026-09-06）

backend/app/agent/async_trace.py

@@ -0,0 +1,51 @@
+"""Serialize and batch durable Trace writes off the asyncio event loop."""
+import asyncio
+from contextvars import copy_context
+
+
+class AsyncTraceWriter:
+    def __init__(self, repository):
+        self.repository = repository
+        self.queue = asyncio.Queue(maxsize=1024)
+        self.worker = None
+
+    async def submit(self, operation, *args):
+        future = asyncio.get_running_loop().create_future()
+        await self.queue.put((operation, args, future))
+        if self.worker is None or self.worker.done():
+            self.worker = asyncio.create_task(self._drain())
+        # Cancellation must not let an older snapshot commit after cancellation.
+        cancelled = False
+        while not future.done():
+            try:
+                await asyncio.shield(future)
+            except asyncio.CancelledError:
+                cancelled = True
+        future.result()
+        return cancelled
+
+    async def _drain(self):
+        while not self.queue.empty():
+            batch = []
+            while len(batch) < 64 and not self.queue.empty():
+                batch.append(self.queue.get_nowait())
+            try:
+                work = asyncio.get_running_loop().run_in_executor(
+                    None, copy_context().run, self.repository.write_batch, [(op, args) for op, args, _ in batch])
+                # asyncio.run/shutdown may cancel every Task simultaneously. The
+                # executor Future survives; finish it and release all waiters.
+                while not work.done():
+                    try:
+                        await asyncio.shield(work)
+                    except asyncio.CancelledError:
+                        pass
+                work.result()
+            except Exception as exc:
+                for _, _, future in batch:
+                    future.set_exception(exc)
+            else:
+                for _, _, future in batch:
+                    future.set_result(None)
+            finally:
+                for _ in batch:
+                    self.queue.task_done()

backend/app/agent/runtime.py

@@ -4,6 +4,8 @@ from __future__ import annotations
 
 import asyncio
 import json
+from app.agent.async_trace import AsyncTraceWriter
+from app.operation_logs import log_event, agent_run_id
 from collections.abc import AsyncIterator
 from dataclasses import dataclass, field
 from datetime import datetime, timezone
@@ -65,6 +67,9 @@ class RunRecord:
     subscribers: set[asyncio.Queue[AgentEvent]] = field(default_factory=set)
     task: asyncio.Task[None] | None = None
     next_sequence: int = 0
+    publish_lock: asyncio.Lock = field(default_factory=asyncio.Lock)
+    cancel_lock: asyncio.Lock = field(default_factory=asyncio.Lock)
+    persisted_run: AgentRun | None = None
 
 
 class AgentRuntime:
@@ -84,6 +89,7 @@ class AgentRuntime:
         self.skills = skills
         self.trace_repository = trace_repository or AgentTraceRepository()
         self._records: dict[str, RunRecord] = {}
+        self._writer = AsyncTraceWriter(self.trace_repository)
 
     async def create_run(self, request: AgentRunCreateRequest) -> AgentRun:
         self._prune_records()
@@ -122,19 +128,25 @@ class AgentRuntime:
             skill_config=skill_config,
             allowed_tools=allowed_tools,
         )
-        self.trace_repository.create_run(
-            run,
-            request,
-            self._config_snapshot(record),
-        )
+        # Reserve capacity before yielding to concurrent creators.
         self._records[run.run_id] = record
+        try:
+            cancelled = await self._writer.submit('create', run.model_copy(deep=True), request.model_copy(deep=True), self._config_snapshot(record))
+        except BaseException:
+            self._records.pop(run.run_id, None)
+            raise
+        record.persisted_run = run.model_copy(deep=True)
+        log_event('agent', 'run.created', run_id=run.run_id, provider_id=run.provider_id, model=run.model)
+        if cancelled:
+            await self._finish_cancelled(record)
+            raise asyncio.CancelledError
         record.task = asyncio.create_task(self._execute(record), name=run.run_id)
         return run.model_copy(deep=True)
 
     def get_run(self, run_id: str) -> AgentRun:
         record = self._records.get(run_id)
         if record is not None:
-            return record.run.model_copy(deep=True)
+            return (record.persisted_run or record.run).model_copy(deep=True)
         run = self.trace_repository.recover_interrupted(run_id)
         if run is None:
             raise AgentRunNotFoundError(run_id)
@@ -145,7 +157,7 @@ class AgentRuntime:
         recovered = [
             self.trace_repository.recover_interrupted(item.run_id) or item
             if item.run_id not in self._records
-            else self._records[item.run_id].run.model_copy(deep=True)
+            else (self._records[item.run_id].persisted_run or self._records[item.run_id].run).model_copy(deep=True)
             for item in items
         ]
         return recovered, total
@@ -154,25 +166,24 @@ class AgentRuntime:
         record = self._records.get(run_id)
         if record is None:
             return self.get_run(run_id)
-        if record.run.status in TERMINAL_STATUSES:
-            return record.run.model_copy(deep=True)
-        record.run.cancelled = True
-        record.run.status = AgentRunStatus.cancelled
-        record.run.updated_at = datetime.now(timezone.utc)
-        self.permissions.cancel_run(run_id)
-        self._publish(record, AgentEventType.run_cancelled, {})
-        if record.task and not record.task.done():
-            record.task.cancel()
-        return record.run.model_copy(deep=True)
+        async with record.cancel_lock:
+            if record.task and not record.task.done():
+                if record.run.status not in TERMINAL_STATUSES:
+                    record.task.cancel()
+                    self.permissions.cancel_run(run_id)
+                await asyncio.gather(record.task, return_exceptions=True)
+            if record.run.status not in TERMINAL_STATUSES:
+                await self._finish_cancelled(record)
+            return (record.persisted_run or record.run).model_copy(deep=True)
 
-    def resolve_permission(self, run_id: str, request_id: str, decision: str) -> bool:
+    async def resolve_permission(self, run_id: str, request_id: str, decision: str) -> bool:
         record = self._records.get(run_id)
         if record is None:
             return False
         ticket = self.permissions.get_ticket(run_id, request_id)
         resolved = self.permissions.resolve(run_id, request_id, decision)
         if resolved:
-            self._publish(
+            await self._publish(
                 record,
                 AgentEventType.permission_resolved,
                 {
@@ -189,23 +200,24 @@ class AgentRuntime:
         record = self._records.get(run_id)
         run = self.get_run(run_id)
         if record is None:
-            for event in self.trace_repository.list_events(
+            for event in await asyncio.to_thread(self.trace_repository.list_events,
                 run_id, after_sequence=after_sequence
             ):
                 yield event
             return
 
-        # 先注册订阅再读持久化历史；同一事件循环内没有 await，不会丢失交界事件。
+        # 先注册再异步读取历史；历史与实时队列的交界用 sequence 去重。
         queue: asyncio.Queue[AgentEvent] = asyncio.Queue()
         record.subscribers.add(queue)
-        history = self.trace_repository.list_events(
-            run_id, after_sequence=after_sequence
-        )
         last_sequence = after_sequence
         try:
+            history = await asyncio.to_thread(self.trace_repository.list_events,
+                run_id, after_sequence=after_sequence)
             for event in history:
                 last_sequence = event.sequence
                 yield event
+                if event.event in {AgentEventType.run_completed, AgentEventType.run_failed, AgentEventType.run_cancelled}:
+                    return
             if run.status in TERMINAL_STATUSES:
                 return
             while True:
@@ -232,7 +244,7 @@ class AgentRuntime:
                 await asyncio.shield(record.task)
             except asyncio.CancelledError:
                 pass
-        return record.run.model_copy(deep=True)
+        return (record.persisted_run or record.run).model_copy(deep=True)
 
     def get_trace(
         self, run_id: str, *, after_sequence: int, limit: int
@@ -246,23 +258,35 @@ class AgentRuntime:
         return trace
 
     async def _execute(self, record: RunRecord) -> None:
+        token = agent_run_id.set(record.run.run_id)
         try:
             async with asyncio.timeout(record.request.run_timeout_seconds):
                 await self._run_loop(record)
         except asyncio.CancelledError:
             if record.run.status != AgentRunStatus.cancelled:
-                self._finish_cancelled(record)
+                await self._finish_cancelled(record)
         except TimeoutError:
-            self._fail(record, "AGENT_TIMEOUT", "Agent run exceeded its timeout.")
+            await self._fail(record, "AGENT_TIMEOUT", "Agent run exceeded its timeout.")
         except ProviderError as exc:
-            self._fail(record, exc.code, exc.message)
+            await self._fail(record, exc.code, exc.message)
         except Exception as exc:
-            self._fail(record, "AGENT_FAILED", str(exc))
+            log_event('agent', 'execution.failed', level='ERROR', error=exc, run_id=record.run.run_id)
+            await self._fail(record, "AGENT_FAILED", str(exc))
+        finally:
+            self.permissions.cancel_run(record.run.run_id)
+            agent_run_id.reset(token)
+
+    async def shutdown(self) -> None:
+        results = await asyncio.gather(*(self.cancel(run_id) for run_id in list(self._records)), return_exceptions=True)
+        for result in results:
+            if isinstance(result, BaseException):
+                log_event('agent', 'shutdown.failed', level='ERROR', error=result)
+        await self._writer.queue.join()
 
     async def _run_loop(self, record: RunRecord) -> None:
         record.run.status = AgentRunStatus.running
         record.run.updated_at = datetime.now(timezone.utc)
-        self._publish(
+        await self._publish(
             record,
             AgentEventType.run_started,
             {"provider_id": record.request.provider_id, "model": record.request.model},
@@ -277,7 +301,7 @@ class AgentRuntime:
             record.run.updated_at = datetime.now(timezone.utc)
             model_call_id = f"model_call_{uuid4().hex}"
             started_at = perf_counter()
-            self._publish(
+            await self._publish(
                 record,
                 AgentEventType.model_call_started,
                 {
@@ -299,7 +323,7 @@ class AgentRuntime:
                     )
                 )
             except Exception as exc:
-                self._publish(
+                await self._publish(
                     record,
                     AgentEventType.model_call_failed,
                     {
@@ -309,7 +333,7 @@ class AgentRuntime:
                     },
                 )
                 raise
-            self._publish(
+            await self._publish(
                 record,
                 AgentEventType.model_call_completed,
                 {
@@ -322,7 +346,7 @@ class AgentRuntime:
                 },
             )
             record.run.token_usage += turn.input_tokens + turn.output_tokens
-            self._publish(
+            await self._publish(
                 record,
                 AgentEventType.usage,
                 {"token_usage": record.run.token_usage},
@@ -331,12 +355,12 @@ class AgentRuntime:
                 record.request.token_budget is not None
                 and record.run.token_usage > record.request.token_budget
             ):
-                self._fail(record, "TOKEN_BUDGET_EXCEEDED", "Agent token budget exceeded.")
+                await self._fail(record, "TOKEN_BUDGET_EXCEEDED", "Agent token budget exceeded.")
                 return
 
             if turn.tool_calls:
                 if len(turn.tool_calls) > MAX_TOOL_CALLS_PER_TURN:
-                    self._fail(
+                    await self._fail(
                         record,
                         "TOO_MANY_TOOL_CALLS",
                         f"Provider requested more than {MAX_TOOL_CALLS_PER_TURN} tools in one turn.",
@@ -360,10 +384,17 @@ class AgentRuntime:
                     async with semaphore:
                         return await self._execute_tool(record, call, model_call_id)
 
-                results = await asyncio.gather(*(execute(call) for call in calls))
+                executions = [asyncio.create_task(execute(call)) for call in calls]
+                try:
+                    results = await asyncio.gather(*executions)
+                finally:
+                    for execution in executions:
+                        if not execution.done():
+                            execution.cancel()
+                    await asyncio.gather(*executions, return_exceptions=True)
                 for call, result in zip(calls, results):
                     record.run.tool_results.append(result)
-                    self._collect_citations(record, result)
+                    await self._collect_citations(record, result)
                     messages.append(
                         Message(
                             role=MessageRole.tool,
@@ -376,20 +407,20 @@ class AgentRuntime:
 
             if turn.text is not None:
                 record.run.output = turn.text
-                self._publish(record, AgentEventType.text_delta, {"text": turn.text})
+                await self._publish(record, AgentEventType.text_delta, {"text": turn.text})
                 record.run.status = AgentRunStatus.completed
                 record.run.updated_at = datetime.now(timezone.utc)
-                self._publish(
+                await self._publish(
                     record,
                     AgentEventType.run_completed,
                     {"output": turn.text, "token_usage": record.run.token_usage},
                 )
                 return
 
-            self._fail(record, "EMPTY_MODEL_RESPONSE", "Provider returned no text or tool call.")
+            await self._fail(record, "EMPTY_MODEL_RESPONSE", "Provider returned no text or tool call.")
             return
 
-        self._fail(record, "MAX_STEPS_EXCEEDED", "Agent reached its maximum step count.")
+        await self._fail(record, "MAX_STEPS_EXCEEDED", "Agent reached its maximum step count.")
 
     async def _execute_tool(
         self, record: RunRecord, call: ToolCall, parent_model_call_id: str
@@ -397,7 +428,7 @@ class AgentRuntime:
         started_at = perf_counter()
         call_data = call.model_dump(mode="json")
         call_data["parent_model_call_id"] = parent_model_call_id
-        self._publish(record, AgentEventType.tool_call, call_data)
+        await self._publish(record, AgentEventType.tool_call, call_data)
         try:
             registered = self.tools.get(call.name)
         except ToolNotFoundError:
@@ -411,7 +442,7 @@ class AgentRuntime:
                 error_code="TOOL_NOT_ALLOWED",
                 error_message="Tool is not included in allowed_tools.",
             )
-            self._publish_tool_result(
+            await self._publish_tool_result(
                 record, result, parent_model_call_id, started_at
             )
             return result
@@ -425,7 +456,7 @@ class AgentRuntime:
                 error_code="NETWORK_NOT_ALLOWED",
                 error_message="Agent run does not allow network tools.",
             )
-            self._publish_tool_result(
+            await self._publish_tool_result(
                 record, result, parent_model_call_id, started_at
             )
             return result
@@ -436,7 +467,7 @@ class AgentRuntime:
             # 运行状态必须在等待期间可见，前端才能展示并处理权限确认卡片。
             ticket = self.permissions.create_ticket(record.run.run_id, permission)
             record.run.status = AgentRunStatus.waiting_permission
-            self._publish(
+            await self._publish(
                 record,
                 AgentEventType.permission_required,
                 {
@@ -458,13 +489,18 @@ class AgentRuntime:
                     error_code="PERMISSION_TIMEOUT",
                     error_message="Tool permission confirmation timed out.",
                 )
-                self._publish_tool_result(
+                await self._publish_tool_result(
                     record, result, parent_model_call_id, started_at
                 )
                 return result
             record.run.status = AgentRunStatus.running
             record.run.updated_at = datetime.now(timezone.utc)
-            self.trace_repository.save_run(record.run)
+            async with record.publish_lock:
+                snapshot = record.run.model_copy(deep=True)
+                cancelled = await self._writer.submit('save', snapshot)
+                record.persisted_run = snapshot
+                if cancelled:
+                    raise asyncio.CancelledError
             result = (
                 await self._invoke_tool(record, call)
                 if decision in {"allow_once", "allow_session"}
@@ -473,10 +509,10 @@ class AgentRuntime:
         else:
             result = await self._invoke_tool(record, call)
 
-        self._publish_tool_result(record, result, parent_model_call_id, started_at)
+        await self._publish_tool_result(record, result, parent_model_call_id, started_at)
         return result
 
-    def _publish_tool_result(
+    async def _publish_tool_result(
         self,
         record: RunRecord,
         result: ToolResult,
@@ -486,7 +522,7 @@ class AgentRuntime:
         data = result.model_dump(mode="json")
         data["parent_model_call_id"] = parent_model_call_id
         data["duration_ms"] = int((perf_counter() - started_at) * 1000)
-        self._publish(record, AgentEventType.tool_result, data)
+        await self._publish(record, AgentEventType.tool_result, data)
 
     async def _invoke_tool(self, record: RunRecord, call: ToolCall) -> ToolResult:
         try:
@@ -519,45 +555,60 @@ class AgentRuntime:
             error_message="Tool permission was denied.",
         )
 
-    def _finish_cancelled(self, record: RunRecord) -> None:
+    async def _finish_cancelled(self, record: RunRecord) -> None:
         record.run.cancelled = True
         record.run.status = AgentRunStatus.cancelled
         record.run.updated_at = datetime.now(timezone.utc)
-        self._publish(record, AgentEventType.run_cancelled, {})
+        await self._publish(record, AgentEventType.run_cancelled, {})
 
-    def _fail(self, record: RunRecord, code: str, message: str) -> None:
-        if record.run.status in TERMINAL_STATUSES:
+    async def _fail(self, record: RunRecord, code: str, message: str) -> None:
+        log_event('agent', 'run.error', level='ERROR', run_id=record.run.run_id, error_code=code)
+        if record.persisted_run and record.persisted_run.status in TERMINAL_STATUSES:
             return
         record.run.status = AgentRunStatus.failed
         record.run.error_code = code
         record.run.error_message = message
         record.run.updated_at = datetime.now(timezone.utc)
-        self._publish(
+        await self._publish(
             record,
             AgentEventType.run_failed,
             {"code": code, "message": message},
         )
 
-    def _publish(
+    async def _publish(
         self, record: RunRecord, event_type: AgentEventType, data: dict[str, object]
     ) -> None:
-        sanitized = sanitize_trace_value(data)
-        assert isinstance(sanitized, dict)
-        event = AgentEvent(
-            event=event_type,
-            run_id=record.run.run_id,
-            sequence=record.next_sequence,
-            data=sanitized,
-            timestamp=datetime.now(timezone.utc),
-        )
-        record.next_sequence += 1
-        record.events.append(event)
-        self.trace_repository.append_event(record.run, event)
-        # 内存只保留实时订阅窗口；完整审计轨迹由 SQLite 保存。
-        if len(record.events) > MAX_EVENTS_PER_RUN:
-            del record.events[: len(record.events) - MAX_EVENTS_PER_RUN]
-        for queue in record.subscribers:
-            queue.put_nowait(event)
+        async with record.publish_lock:
+            sanitized = sanitize_trace_value(data)
+            assert isinstance(sanitized, dict)
+            event = AgentEvent(
+                event=event_type,
+                run_id=record.run.run_id,
+                sequence=record.next_sequence,
+                data=sanitized,
+                timestamp=datetime.now(timezone.utc),
+            )
+            snapshot = record.run.model_copy(deep=True)
+            try:
+                cancelled = await self._writer.submit('event', snapshot, event)
+            except Exception as exc:
+                log_event('agent', 'trace.write_failed', level='ERROR', error=exc, run_id=record.run.run_id)
+                raise
+            record.next_sequence += 1
+            record.persisted_run = snapshot
+            record.events.append(event)
+            log_event('agent', event_type.value,
+                      level='ERROR' if event_type.value.endswith('Failed') or data.get('success') is False else 'INFO',
+                      run_id=record.run.run_id, provider_id=record.run.provider_id, model=record.run.model,
+                      sequence=event.sequence, step=record.run.current_step, status=snapshot.status.value,
+                      tool=data.get('name'), error_code=data.get('code') or data.get('error_code'))
+            # 内存只保留实时订阅窗口；完整审计轨迹由 SQLite 保存。
+            if len(record.events) > MAX_EVENTS_PER_RUN:
+                del record.events[: len(record.events) - MAX_EVENTS_PER_RUN]
+            for queue in record.subscribers:
+                queue.put_nowait(event)
+            if cancelled:
+                raise asyncio.CancelledError
 
     @staticmethod
     def _request_metadata(record: RunRecord) -> dict[str, object]:
@@ -583,7 +634,7 @@ class AgentRuntime:
             "metadata": record.request.metadata,
         }
 
-    def _collect_citations(self, record: RunRecord, result: ToolResult) -> None:
+    async def _collect_citations(self, record: RunRecord, result: ToolResult) -> None:
         if not result.success or not isinstance(result.output, dict):
             return
         items = result.output.get("items")
@@ -601,7 +652,7 @@ class AgentRuntime:
                 continue
             known.add(citation.citation_id)
             record.run.citations.append(citation)
-            self._publish(record, AgentEventType.citation, citation.model_dump(mode="json"))
+            await self._publish(record, AgentEventType.citation, citation.model_dump(mode="json"))
 
     def _get_record(self, run_id: str) -> RunRecord:
         try:
@@ -618,7 +669,7 @@ class AgentRuntime:
             (
                 record
                 for record in self._records.values()
-                if record.run.status in TERMINAL_STATUSES
+                if record.run.status in TERMINAL_STATUSES and (record.task is None or record.task.done())
             ),
             key=lambda record: record.run.updated_at,
         )

backend/app/agent/trace_repository.py

@@ -6,6 +6,7 @@ SQLite 中的事件是 SSE、前端 Trace 和 Benchmark 的共同事实来源。
 
 from __future__ import annotations
 
+from contextlib import nullcontext
 import json
 import re
 from datetime import datetime, timezone
@@ -94,15 +95,30 @@ def sanitize_trace_value(
 
 
 class AgentTraceRepository:
+    def write_batch(self, jobs):
+        conn = connect()
+        try:
+            with transaction(conn):
+                for operation, args in jobs:
+                    if operation == 'create':
+                        self.create_run(*args, _conn=conn)
+                    elif operation == 'save':
+                        self.save_run(*args, _conn=conn)
+                    else:
+                        self.append_event(*args, _conn=conn)
+        finally:
+            conn.close()
+
     def create_run(
         self,
         run: AgentRun,
         request: AgentRunCreateRequest,
         config_snapshot: dict[str, Any],
+        *, _conn=None,
     ) -> None:
-        conn = connect()
+        conn = _conn or connect()
         try:
-            with transaction(conn):
+            with transaction(conn) if _conn is None else nullcontext():
                 conn.execute(
                     """
                     INSERT INTO agent_runs(
@@ -126,22 +142,24 @@ class AgentTraceRepository:
                     ),
                 )
         finally:
-            conn.close()
+            if _conn is None:
+                conn.close()
 
-    def save_run(self, run: AgentRun) -> None:
-        conn = connect()
+    def save_run(self, run: AgentRun, *, _conn=None) -> None:
+        conn = _conn or connect()
         try:
-            with transaction(conn):
+            with transaction(conn) if _conn is None else nullcontext():
                 self._update_run(conn, run)
         finally:
-            conn.close()
+            if _conn is None:
+                conn.close()
 
-    def append_event(self, run: AgentRun, event: AgentEvent) -> None:
+    def append_event(self, run: AgentRun, event: AgentEvent, *, _conn=None) -> None:
         """在同一事务中保存最新 Run 和事件；复写同一序号时保持幂等。"""
 
-        conn = connect()
+        conn = _conn or connect()
         try:
-            with transaction(conn):
+            with transaction(conn) if _conn is None else nullcontext():
                 self._update_run(conn, run)
                 conn.execute(
                     """
@@ -158,7 +176,8 @@ class AgentTraceRepository:
                     ),
                 )
         finally:
-            conn.close()
+            if _conn is None:
+                conn.close()
 
     def get_run(self, run_id: str) -> AgentRun | None:
         conn = connect()

backend/app/contracts.py

@@ -1132,6 +1132,11 @@ class TranscriptNoteRequest(Contract):
 
 
 class IndexStatus(Contract):
+    running_jobs: int = 0
+    active_searches: int = 0
+    completed_searches: int = 0
+    failed_searches: int = 0
+    cancelled_searches: int = 0
     vector_refresh_required: bool = False
     total_notes: int = 0
     total_blocks: int = 0

backend/app/errors.py

@@ -25,6 +25,10 @@ class ApiError(Exception):
 
 
 async def api_error_handler(_: Request, exc: ApiError) -> JSONResponse:
+    from app.operation_logs import log_event
+    log_event('api', 'operation.failed', level='ERROR' if exc.status_code >= 500 else 'WARNING',
+              error=exc, status=exc.status_code,
+              **{key: value for key, value in exc.details.items() if key in {'run_id', 'task_id', 'note_id', 'job_id', 'provider_id'}})
     body = ErrorResponse(
         error=ErrorDetail(code=exc.code, message=exc.message, details=exc.details)
     )

backend/app/local_models/protocol.py

@@ -0,0 +1,11 @@
+"""Bound embedding result frames so large notes do not exceed pipe line limits."""
+import json
+
+
+def response_lines(response, operation):
+    if operation == 'embedding' and 'result' in response and 'error_code' not in response:
+        vectors = response['result']
+        for offset in range(0, len(vectors), 128):
+            yield json.dumps({'embedding_offset': offset, 'embedding_chunk': vectors[offset:offset + 128]}, allow_nan=False) + '\n'
+        response = {**response, 'result': [], 'embedding_count': len(vectors)}
+    yield json.dumps(response, ensure_ascii=False, allow_nan=False) + '\n'

backend/app/local_models/runtime.py

@@ -189,15 +189,30 @@ class Runtime:
                 await process.stdin.drain()
                 process.stdin.close()
                 final = None
+                vectors = []
                 while line := await process.stdout.readline():
                     message = json.loads(line)
-                    if "progress" in message:
+                    if "embedding_chunk" in message:
+                        chunk = message['embedding_chunk']
+                        if (operation != 'embedding' or not isinstance(chunk, list)
+                                or message.get('embedding_offset') != len(vectors)
+                                or len(vectors) + len(chunk) > len(payload.get('texts', []))):
+                            raise ProviderError('LOCAL_MODEL_INVALID_RESPONSE', '本地向量传输顺序或数量无效。')
+                        vectors.extend(chunk)
+                    elif "progress" in message:
                         callback = runtime_progress.get()
                         if callback:
                             callback(message)
                     else:
                         final = message
                 await process.wait()
+                if isinstance(final, dict) and 'embedding_count' in final:
+                    if (final['embedding_count'] != len(vectors)
+                            or len(vectors) != len(payload.get('texts', []))):
+                        raise ProviderError('LOCAL_MODEL_INVALID_RESPONSE', '本地向量传输不完整。')
+                    final['result'] = vectors
+                elif vectors:
+                    raise ProviderError('LOCAL_MODEL_INVALID_RESPONSE', '本地向量传输缺少结束标记。')
                 return final
             try:
                 result = await asyncio.wait_for(receive(), config.timeout_seconds)

backend/app/local_models/worker.py

@@ -216,4 +216,6 @@ if __name__ == "__main__":
                 response = {"error_code": "LOCAL_INFERENCE_FAILED", "message": "本地推理失败，请检查媒体格式、模型和设备配置。"}
     if "error_code" in response:
         response["diagnostics"] = {"requested_device": request["config"]["device"], "actual_device": request.get("_actual_device", "unknown")}
-    sys.stdout.buffer.write((json.dumps(response, ensure_ascii=False, allow_nan=False) + "\n").encode("utf-8"))
+    from protocol import response_lines
+    for line in response_lines(response, request['operation']):
+        sys.stdout.buffer.write(line.encode('utf-8'))

backend/app/log_routes.py

@@ -0,0 +1,11 @@
+from fastapi import APIRouter, Query
+from app.operation_logs import get_store
+
+router = APIRouter(prefix='/api/logs', tags=['Diagnostics'])
+
+
+@router.get('')
+def list_logs(limit: int = Query(50, ge=1, le=200), before: int | None = Query(None, ge=1),
+              level: str = Query('', pattern='^(|INFO|WARNING|ERROR|CRITICAL)$'),
+              source: str = Query('', max_length=100), q: str = Query('', max_length=200)):
+    return get_store().query(limit=limit, before=before, level=level, source=source, q=q)

backend/app/main.py

@@ -1,4 +1,7 @@
 from contextlib import asynccontextmanager
+import asyncio
+from time import perf_counter
+from uuid import uuid4
 
 from fastapi import FastAPI
 from fastapi.exceptions import RequestValidationError
@@ -14,17 +17,22 @@ from app.local_model_routes import router as local_model_router
 from app.usage_routes import router as usage_router
 from app.provider_preview_routes import router as provider_preview_router
 from app.schemas import HealthResponse, ServiceStatusResponse
+from app.log_routes import router as log_router
+from app.operation_logs import install_logging, log_event, request_id, shutdown_logging
 
 settings = get_settings()
 
 
 @asynccontextmanager
 async def lifespan(_: FastAPI):
+    install_logging()
+    log_event('system', 'service.started')
     from app.services import transcription_service
     transcription_service.recover_interrupted()
     try:
         yield
     finally:
+        await container.agent.shutdown()
         from app.services import index_service
         await index_service.shutdown()
         await transcription_service.shutdown()
@@ -35,6 +43,8 @@ async def lifespan(_: FastAPI):
             await manager.cancel_download(key)
         container.plugins.shutdown()
         container.mcp_servers.shutdown()
+        log_event('system', 'service.stopped')
+        await asyncio.to_thread(shutdown_logging)
 
 
 app = FastAPI(
@@ -60,6 +70,32 @@ app.include_router(media_router)
 app.include_router(local_model_router)
 app.include_router(usage_router)
 app.include_router(provider_preview_router)
+app.include_router(log_router)
+
+
+@app.middleware('http')
+async def operation_log(request, call_next):
+    token = request_id.set(uuid4().hex)
+    started = perf_counter()
+    status = 500
+    failure = None
+    try:
+        response = await call_next(request)
+        status = response.status_code
+        response.headers['X-Request-ID'] = request_id.get()
+        return response
+    except Exception as exc:
+        failure = exc
+        raise
+    finally:
+        # Do not record query strings, request/response bodies or arbitrary URLs.
+        route = getattr(request.scope.get('route'), 'path', 'unmatched')
+        if not route.startswith('/api/logs') and (request.method not in {'GET', 'HEAD', 'OPTIONS'} or status >= 400 or perf_counter() - started > 1):
+            log_event('http', 'request.finished', level='ERROR' if status >= 500 else 'WARNING' if status >= 400 else 'INFO',
+                      error=failure, method=request.method, route=route, status=status,
+                      duration_ms=round((perf_counter() - started) * 1000, 2),
+                      **{k: v for k, v in request.path_params.items() if k in {'run_id', 'task_id', 'note_id', 'job_id', 'provider_id'}})
+        request_id.reset(token)
 
 
 @app.get("/health", response_model=HealthResponse, tags=["System"])

backend/app/operation_logs.py

@@ -0,0 +1,186 @@
+"""Bounded, asynchronous operational diagnostics, separate from business/Trace data.
+
+Only explicitly allowed metadata is stored. Never store prompts, tool arguments,
+provider response bodies or raw exception messages in this diagnostic channel.
+"""
+from __future__ import annotations
+
+import json
+import logging
+import math
+import queue
+import re
+import sqlite3
+import threading
+import traceback
+from contextvars import ContextVar
+from contextlib import closing
+from datetime import datetime, timezone
+from pathlib import Path
+
+from app.config import get_settings
+
+request_id: ContextVar[str] = ContextVar('log_request_id', default='')
+agent_run_id: ContextVar[str] = ContextVar('log_agent_run_id', default='')
+_allowed = {'run_id', 'task_id', 'note_id', 'job_id', 'provider_id', 'model',
+            'device', 'error_code', 'error_type', 'status', 'duration_ms', 'count',
+            'step', 'sequence', 'tool', 'method', 'route', 'request_id', 'fallback',
+            'frames', 'source', 'changed_fields'}
+_safe = re.compile(r'[^\w .:/@{}\[\],()=+\-]', re.UNICODE)
+
+
+def metadata(values: dict) -> dict:
+    result = {}
+    for key, value in values.items():
+        if key not in _allowed or value is None:
+            continue
+        if isinstance(value, (int, float, bool)):
+            if not isinstance(value, float) or math.isfinite(value):
+                result[key] = value
+        else:
+            text = str(value)
+            text = re.sub(r'(?i)(?:bearer\s+\S+|sk-[\w-]+)', '[REDACTED]', text)
+            result[key] = _safe.sub('', text)[:500]
+    return result
+
+
+class LogStore:
+    def __init__(self, path: Path, *, retain: int = 20_000):
+        self.path = path
+        self.retain = retain
+        self.queue: queue.Queue = queue.Queue(maxsize=4096)
+        self.dropped = 0
+        self.failed = 0
+        self.closed = False
+        self.state_lock = threading.Lock()
+        self.thread = threading.Thread(target=self._write, name='operation-logs', daemon=True)
+        path.parent.mkdir(parents=True, exist_ok=True)
+        with closing(self._connect()) as conn, conn:
+            conn.execute('CREATE TABLE IF NOT EXISTS logs (id INTEGER PRIMARY KEY, timestamp TEXT NOT NULL, level TEXT NOT NULL, source TEXT NOT NULL, event TEXT NOT NULL, details TEXT NOT NULL)')
+            conn.execute('CREATE INDEX IF NOT EXISTS logs_level_id ON logs(level, id)')
+            conn.execute('CREATE INDEX IF NOT EXISTS logs_source_id ON logs(source, id)')
+        self.thread.start()
+
+    def _connect(self):
+        conn = sqlite3.connect(self.path, timeout=5)
+        conn.row_factory = sqlite3.Row
+        return conn
+
+    def emit(self, level: str, source: str, event: str, details: dict):
+        row = (datetime.now(timezone.utc).isoformat(), level, source[:100], event[:160], json.dumps(metadata(details), ensure_ascii=False))
+        with self.state_lock:
+            if self.closed:
+                return
+            try:
+                self.queue.put_nowait(row)
+            except queue.Full:
+                self.dropped += 1
+
+    def _write(self):
+        while True:
+            first = self.queue.get()
+            batch = [first]
+            while len(batch) < 128:
+                try:
+                    batch.append(self.queue.get_nowait())
+                except queue.Empty:
+                    break
+            stop = None in batch
+            rows = [row for row in batch if row is not None]
+            try:
+                if rows:
+                    with closing(self._connect()) as conn, conn:
+                        conn.executemany('INSERT INTO logs(timestamp,level,source,event,details) VALUES(?,?,?,?,?)', rows)
+                        conn.execute('DELETE FROM logs WHERE id <= (SELECT id FROM logs ORDER BY id DESC LIMIT 1 OFFSET ?)', (self.retain,))
+            except Exception:
+                self.failed += len(rows)
+            finally:
+                for _ in batch:
+                    self.queue.task_done()
+            if stop:
+                return
+
+    def query(self, *, limit=50, before=None, level='', source='', q=''):
+        clauses, args = [], []
+        for column, value in [('level', level), ('source', source)]:
+            if value:
+                clauses.append(f'{column} = ?')
+                args.append(value)
+        if before is not None:
+            clauses.append('id < ?')
+            args.append(before)
+        if q:
+            clauses.append('(instr(event, ?) > 0 OR instr(details, ?) > 0)')
+            args += [q, q]
+        where = ' WHERE ' + ' AND '.join(clauses) if clauses else ''
+        with closing(self._connect()) as conn, conn:
+            rows = conn.execute('SELECT * FROM logs' + where + ' ORDER BY id DESC LIMIT ?', (*args, limit + 1)).fetchall()
+            sources = [row[0] for row in conn.execute('SELECT DISTINCT source FROM logs ORDER BY source')]
+        items = [{**dict(row), 'details': json.loads(row['details'])} for row in rows[:limit]]
+        return {'items': items, 'next_cursor': items[-1]['id'] if len(rows) > limit else None,
+                'sources': sources, 'pending': self.queue.qsize(), 'dropped': self.dropped,
+                'write_failures': self.failed, 'retention': self.retain}
+
+    def close(self):
+        with self.state_lock:
+            if self.closed:
+                return
+            self.closed = True
+        self.queue.put(None)
+        self.thread.join(timeout=15)
+
+
+_store: LogStore | None = None
+_lock = threading.Lock()
+
+
+def get_store() -> LogStore:
+    global _store
+    path = get_settings().data_dir / 'logs' / 'operations.sqlite3'
+    with _lock:
+        if _store is None or _store.path != path or _store.closed:
+            if _store is not None and not _store.closed:
+                _store.close()
+            _store = LogStore(path)
+        return _store
+
+
+def log_event(module: str, event: str, *, level='INFO', error: BaseException | None = None, **details):
+    if request_id.get():
+        details.setdefault('request_id', request_id.get())
+    if agent_run_id.get():
+        details.setdefault('run_id', agent_run_id.get())
+    if error:
+        details['error_type'] = type(error).__name__
+        details.setdefault('error_code', getattr(error, 'code', None))
+        details['frames'] = '; '.join(f'{Path(f.filename).name}:{f.lineno}:{f.name}' for f in traceback.extract_tb(error.__traceback__)[-8:])
+    try:
+        get_store().emit(level, module, event, details)
+    except Exception:
+        # Logging must not turn a successful save/run into a business failure.
+        logging.getLogger('operation_log_storage').error('Operational log storage unavailable')
+
+
+class ApplicationLogHandler(logging.Handler):
+    def emit(self, record):
+        if record.name == 'operation_log_storage' or getattr(record, '_notes_operation_logged', False):
+            return
+        record._notes_operation_logged = True
+        # Legacy log messages can include note text/credentials, even in f-strings.
+        # Preserve source location and error class; structured call sites carry IDs.
+        log_event(record.name, 'application.warning' if record.levelno < 40 else 'application.error',
+                  level=record.levelname, error=record.exc_info[1] if record.exc_info else None,
+                  frames=f'{Path(record.pathname).name}:{record.lineno}:{record.funcName}')
+
+
+def install_logging():
+    # Uvicorn's default logger stops propagation before the root logger.
+    for name in ('', 'uvicorn'):
+        logger = logging.getLogger(name)
+        if not any(isinstance(h, ApplicationLogHandler) for h in logger.handlers):
+            logger.addHandler(ApplicationLogHandler(level=logging.WARNING))
+
+
+def shutdown_logging():
+    if _store is not None and not _store.closed:
+        _store.close()

backend/app/retrieval/activity.py

@@ -0,0 +1,30 @@
+"""Process-local retrieval activity, shared by search, RAG and Agent callers."""
+import asyncio
+from functools import wraps
+
+active = 0
+completed = 0
+failed = 0
+cancelled = 0
+
+
+def track_search(operation):
+    @wraps(operation)
+    async def wrapped(self, request):
+        global active, completed, failed, cancelled
+        if request.mode == 'fts':
+            return await operation(self, request)
+        active += 1
+        try:
+            result = await operation(self, request)
+            completed += 1
+            return result
+        except asyncio.CancelledError:
+            cancelled += 1
+            raise
+        except Exception:
+            failed += 1
+            raise
+        finally:
+            active -= 1
+    return wrapped

backend/app/retrieval/engine.py

@@ -10,6 +10,7 @@ from __future__ import annotations
 from datetime import datetime, timezone
 
 from app import repository
+from app.retrieval.activity import track_search
 from app.contracts import (
     Citation,
     PageMeta,
@@ -52,6 +53,7 @@ class RetrievalEngine:
         # remain authoritative, including monkeypatches on the singleton.
         self._routed_defaults = (embedding, vector_store) if route_embeddings else None
 
+    @track_search
     async def search(self, request: SearchRequest) -> SearchResponse:
         if request.mode == SearchMode.fts:
             return self._search_fts(request)

backend/app/retrieval/routed_vectors.py

@@ -20,6 +20,7 @@ from typing import Protocol
 
 from app.database.db import connect, transaction
 from app.errors import ApiError
+from app.operation_logs import log_event
 from app.retrieval.vectorstore import VectorHit
 from app.retrieval.provenance import record_embedding
 from app.retrieval.hybrid import rrf_fuse
@@ -101,6 +102,8 @@ async def embed_remote(texts: list[str], *, accept_local=False, strict=False, lo
             source=result.source,
         )
     except Exception as exc:
+        log_event('vectors', 'embedding.failed', level='ERROR' if strict else 'WARNING', error=exc,
+                  count=len(texts), fallback='none' if strict else 'local_index')
         # Avoid logging provider exceptions containing credentials or note text.
         record_embedding(fallback_reason="REMOTE_EMBEDDING_UNAVAILABLE")
         logger.warning("Remote embedding unavailable (%s); using local index", type(exc).__name__)

backend/app/routes.py

@@ -11,6 +11,7 @@ from fastapi.responses import StreamingResponse
 from app.agent import AgentCapacityError, AgentRunNotFoundError
 from app.container import container
 from app.config import get_settings
+from app.operation_logs import log_event
 from app.extensions.archive import MAX_ZIP_BYTES, install_zip
 from app.services.persona_settings import PersonaSettings, load_persona, save_persona
 from app.contracts import (
@@ -455,11 +456,15 @@ async def chat(request: ChatRequest) -> StreamingResponse:
                         usage = {"input_tokens": input_tokens, "output_tokens": output_tokens,
                                  "total_tokens": input_tokens + output_tokens}
                     elif event.event == ModelEventType.error:
+                        log_event('chat', 'model.error', level='ERROR', provider_id=request.provider_id,
+                                  model=request.model, error_code=event.data.get('code'))
                         if assistant_content:
                             assistant_content += "\n\n"
                         assistant_content += str(event.data.get("message", "Model generation failed."))
                     yield as_sse(event.event.value, event.model_dump_json())
         except Exception as exc:
+            log_event('chat', 'chat.failed', level='ERROR', error=exc,
+                      provider_id=request.provider_id, model=request.model)
             failure_message = exc.message if isinstance(exc, ApiError) else "知识库检索或模型生成失败，请检查服务状态。"
             if assistant_content:
                 assistant_content += "\n\n"
@@ -498,7 +503,7 @@ async def chat(request: ChatRequest) -> StreamingResponse:
 async def list_agent_runs(
     limit: int = Query(default=50, ge=1, le=100), offset: int = Query(default=0, ge=0)
 ) -> AgentRunListResponse:
-    items, total = container.agent.list_runs(limit=limit, offset=offset)
+    items, total = await asyncio.to_thread(container.agent.list_runs, limit=limit, offset=offset)
     return AgentRunListResponse(
         items=items,
         page=PageMeta(total=total, limit=limit, offset=offset),
@@ -603,7 +608,7 @@ async def get_agent_trace(
     limit: int = Query(default=200, ge=1, le=500),
 ) -> AgentTraceResponse:
     try:
-        return container.agent.get_trace(
+        return await asyncio.to_thread(container.agent.get_trace,
             run_id, after_sequence=after_sequence, limit=limit
         )
     except AgentRunNotFoundError as exc:
@@ -624,7 +629,7 @@ async def decide_agent_permission(
     run_id: str, request_id: str, request: PermissionDecisionRequest
 ) -> OperationResponse:
     agent_run_or_404(run_id)
-    if not container.agent.resolve_permission(run_id, request_id, request.decision):
+    if not await container.agent.resolve_permission(run_id, request_id, request.decision):
         raise ApiError(
             404,
             "PERMISSION_REQUEST_NOT_FOUND",
@@ -1223,7 +1228,7 @@ async def test_provider(request: ProviderTestRequest) -> ProviderTestResponse:
 async def list_tasks(
     limit: int = Query(default=50, ge=1, le=100), offset: int = Query(default=0, ge=0)
 ) -> TaskListResponse:
-    items, total = task_service.list_tasks(limit=limit, offset=offset)
+    items, total = await asyncio.to_thread(task_service.list_tasks, limit=limit, offset=offset)
     return TaskListResponse(
         items=items, page=PageMeta(total=total, limit=limit, offset=offset)
     )
@@ -1231,12 +1236,12 @@ async def list_tasks(
 
 @router.post("/tasks", response_model=Task, tags=["Tasks"])
 async def create_task(request: TaskCreateRequest) -> Task:
-    return task_service.create_task(**request.model_dump())
+    return await task_service.write_in_background(task_service.create_task, **request.model_dump())
 
 
 @router.get("/tasks/{task_id}", response_model=Task, tags=["Tasks"])
 async def get_task(task_id: str) -> Task:
-    task = task_service.get_task(task_id)
+    task = await asyncio.to_thread(task_service.get_task, task_id)
     if task is None:
         raise ApiError(
             404, "RESOURCE_NOT_FOUND", "task not found", {"task_id": task_id}
@@ -1246,7 +1251,7 @@ async def get_task(task_id: str) -> Task:
 
 @router.patch("/tasks/{task_id}", response_model=Task, tags=["Tasks"])
 async def update_task(task_id: str, request: TaskUpdateRequest) -> Task:
-    return task_service.update_task(task_id, request.model_dump(exclude_unset=True))
+    return await task_service.write_in_background(task_service.update_task, task_id, request.model_dump(exclude_unset=True))
 
 
 @router.delete(
@@ -1255,7 +1260,7 @@ async def update_task(task_id: str, request: TaskUpdateRequest) -> Task:
     tags=["Tasks"],
 )
 async def delete_task(task_id: str) -> OperationResponse:
-    if not task_service.delete_task(task_id):
+    if not await task_service.write_in_background(task_service.delete_task, task_id):
         raise ApiError(
             404, "RESOURCE_NOT_FOUND", "task not found", {"task_id": task_id}
         )

backend/app/services/index_service.py

@@ -4,6 +4,7 @@ from __future__ import annotations
 
 import asyncio
 import logging
+from app.operation_logs import log_event
 
 from datetime import datetime, timezone
 from pathlib import Path
@@ -25,6 +26,7 @@ vector_store = SqliteVecStore()
 
 _jobs: dict[str, IndexJob] = {}
 _active_job_id: str | None = None
+_active_scope: str | None = None
 _last_completed_at: datetime | None = None
 _last_error: str | None = None
 MAX_JOBS = 100
@@ -33,6 +35,7 @@ _logger = logging.getLogger(__name__)
 
 
 def _remember_job(job: IndexJob) -> None:
+    log_event('vectors', 'index.' + job.status, job_id=job.job_id, status=job.status)
     _jobs[job.job_id] = job
     while len(_jobs) > MAX_JOBS:
         oldest = next(iter(_jobs))
@@ -64,7 +67,7 @@ def _scan_vault() -> list[tuple[str, str, str, datetime, datetime]]:
 
 
 async def rebuild(request: IndexRebuildRequest) -> IndexJob:
-    global _active_job_id, _last_completed_at, _last_error
+    global _active_job_id, _active_scope, _last_completed_at, _last_error
     if _active_job_id is not None:
         raise ApiError(409, "INDEX_BUSY", "索引正在后台计算，请稍后重试。")
     job_id = "job_" + uuid4().hex[:12]
@@ -82,6 +85,7 @@ async def rebuild(request: IndexRebuildRequest) -> IndexJob:
     saved_paths = {record.file_path: record for record in saved_records.values() if record is not None}
 
     _active_job_id = job_id
+    _active_scope = 'all'
     _last_error = None
     _remember_job(IndexJob(
         job_id=job_id, status="running", scope=request.scope,
@@ -148,6 +152,7 @@ async def rebuild(request: IndexRebuildRequest) -> IndexJob:
             finally:
                 conn.close()
     except BaseException as exc:
+        log_event('vectors', 'index.failed', level='WARNING' if isinstance(exc, asyncio.CancelledError) else 'ERROR', error=exc, job_id=job_id)
         _remember_job(IndexJob(
             job_id=job_id, status="failed", scope=request.scope,
             created_at=datetime.now(timezone.utc),
@@ -156,6 +161,7 @@ async def rebuild(request: IndexRebuildRequest) -> IndexJob:
         raise
     finally:
         _active_job_id = None
+        _active_scope = None
 
     job = IndexJob(job_id=job_id, status="completed", scope=request.scope, created_at=datetime.now(timezone.utc))
     _remember_job(job)
@@ -166,16 +172,26 @@ async def rebuild(request: IndexRebuildRequest) -> IndexJob:
 
 
 def get_status() -> IndexStatus:
+    from app.retrieval import activity
     counts = repository.stats()
-    vector_refresh_required = repository.get_index_meta().get('workspace_vectors_pending') == '1' or bool(_pending_notes())
+    workspace_pending = repository.get_index_meta().get('workspace_vectors_pending') == '1'
+    notes_pending = len(_pending_notes())
+    vector_refresh_required = workspace_pending or bool(notes_pending)
+    running = int(_active_job_id is not None)
+    # An entire-vault rebuild is one job, not one job per block/note.
+    pending = 1 if running and _active_scope == 'all' else (1 + running if workspace_pending else max(notes_pending, running))
+    activity_fields = dict(running_jobs=running, active_searches=activity.active,
+                           completed_searches=activity.completed, failed_searches=activity.failed,
+                           cancelled_searches=activity.cancelled)
     if _active_job_id is not None:
-        return IndexStatus(status="running", pending_jobs=0, active_job_id=_active_job_id, vector_refresh_required=vector_refresh_required,
+        return IndexStatus(**activity_fields, status="running", pending_jobs=pending, active_job_id=_active_job_id, vector_refresh_required=vector_refresh_required,
                            total_notes=counts["notes"], total_blocks=counts["blocks"])
     return IndexStatus(
+        **activity_fields,
         vector_refresh_required=vector_refresh_required,
         total_notes=counts["notes"], total_blocks=counts["blocks"],
         status="failed" if _last_error else "idle",
-        pending_jobs=0,
+        pending_jobs=pending,
         last_completed_at=_last_completed_at,
         error_message=_last_error,
     )
@@ -227,7 +243,7 @@ def _pending_notes() -> list[str]:
 
 
 async def _refresh_saved_note(note_id: str) -> None:
-    global _active_job_id, _last_error, _last_completed_at
+    global _active_job_id, _active_scope, _last_error, _last_completed_at
     record = repository.get_note_record(note_id)
     key = f'note_vectors_pending:{note_id}'
     if record is None:
@@ -240,6 +256,7 @@ async def _refresh_saved_note(note_id: str) -> None:
     parsed.title = record.title
     job_id = 'job_' + uuid4().hex[:12]
     _active_job_id = job_id
+    _active_scope = 'note'
     _last_error = None
     _remember_job(IndexJob(job_id=job_id, status='running', scope='all', created_at=datetime.now(timezone.utc)))
     try:
@@ -267,8 +284,10 @@ async def _refresh_saved_note(note_id: str) -> None:
         _last_completed_at = datetime.now(timezone.utc)
         _remember_job(IndexJob(job_id=job_id, status='completed', scope='all', created_at=_last_completed_at))
     except BaseException as exc:
+        log_event('vectors', 'index.failed', level='WARNING' if isinstance(exc, asyncio.CancelledError) else 'ERROR', error=exc, job_id=job_id)
         _last_error = str(exc) or '后台向量计算已中断，笔记已保存。'
         _remember_job(IndexJob(job_id=job_id, status='failed', scope='all', created_at=datetime.now(timezone.utc)))
         raise
     finally:
         _active_job_id = None
+        _active_scope = None

backend/app/services/model_diagnostics.py

@@ -19,6 +19,13 @@ def connection():
 
 
 def record(**values):
+    from app.operation_logs import log_event
+    log_event('models', 'model.' + str(values.get('operation', 'inference')),
+              level='ERROR' if values.get('status') == 'failed' else 'WARNING' if values.get('status') == 'fallback' else 'INFO',
+              model=values.get('model'), source=values.get('source'), status=values.get('status'),
+              device=values.get('actual_device') or values.get('attempted_device'),
+              error_code=values.get('error_code'), fallback=values.get('fallback_reason'),
+              duration_ms=round(values.get('elapsed_seconds', 0) * 1000, 2))
     safe = {key: value[:240] for key, value in values.items() if key in TEXT and isinstance(value, str)}
     safe.update({key: value for key, value in values.items()
                  if key in NUMBERS and type(value) in (float, int) and math.isfinite(value) and value >= 0})

backend/app/services/task_service.py

@@ -2,11 +2,37 @@ from __future__ import annotations
 
 from datetime import datetime, timezone
 from uuid import uuid4
+import asyncio
+from contextvars import copy_context
+from functools import partial
+from weakref import WeakKeyDictionary
 
 from app import repository
 from app.contracts import Task, TaskStatus
 from app.database.db import connect, transaction
 from app.errors import ApiError
+from app.operation_logs import log_event
+
+_write_locks = WeakKeyDictionary()
+
+
+async def write_in_background(operation, *args, **kwargs):
+    # SQLite has one writer. Queue cooperatively instead of letting many worker
+    # threads fight over the file lock and starve unrelated model work.
+    loop = asyncio.get_running_loop()
+    lock = _write_locks.setdefault(loop, asyncio.Lock())
+    async with lock:
+        work = loop.run_in_executor(None, copy_context().run, partial(operation, *args, **kwargs))
+        cancelled = False
+        while not work.done():
+            try:
+                await asyncio.shield(work)
+            except asyncio.CancelledError:
+                cancelled = True
+        result = work.result()
+        if cancelled:
+            raise asyncio.CancelledError
+        return result
 
 
 def _now() -> datetime:
@@ -49,6 +75,7 @@ def create_task(
                 ),
             )
         row = conn.execute("SELECT * FROM tasks WHERE task_id = ?", (task_id,)).fetchone()
+        log_event('tasks', 'task.created', task_id=task_id, note_id=note_id, status='todo')
         return _task_from_row(row)
     finally:
         conn.close()
@@ -111,6 +138,7 @@ def update_task(task_id: str, values: dict[str, object]) -> Task:
                 params,
             )
         row = conn.execute("SELECT * FROM tasks WHERE task_id = ?", (task_id,)).fetchone()
+        log_event('tasks', 'task.updated', task_id=task_id, status=row['status'], changed_fields=','.join(values))
         return _task_from_row(row)
     finally:
         conn.close()
@@ -121,6 +149,7 @@ def delete_task(task_id: str) -> bool:
     try:
         with transaction(conn):
             cursor = conn.execute("DELETE FROM tasks WHERE task_id = ?", (task_id,))
+        log_event('tasks', 'task.deleted' if cursor.rowcount else 'task.not_found', task_id=task_id)
         return cursor.rowcount > 0
     finally:
         conn.close()

backend/app/services/usage_service.py

@@ -98,6 +98,11 @@ class UsageAttempt:
                     reasoning_tokens=first("output_tokens_details.reasoning_tokens", "completion_tokens_details.reasoning_tokens"))
 
     def persist(self):
+        from app.operation_logs import log_event
+        log_event('providers', 'model.request_finished', level='INFO' if self.completed else 'WARNING',
+                  provider_id=self.provider_id, model=self.model, run_id=self.run_id,
+                  request_id=self.request_id, source=self.source,
+                  status='completed' if self.completed else 'incomplete')
         try:
             with closing(connection()) as conn:
                 conn.execute("INSERT OR REPLACE INTO model_usage VALUES (?,?,?,?,?,?,?,?,?,?,?)", (

backend/scripts/agent-task-stress.py

@@ -0,0 +1,250 @@
+"""Offline Agent/runtime and task API load test; all state lives in a temporary directory."""
+from __future__ import annotations
+
+import argparse
+import asyncio
+import json
+import inspect
+import math
+import os
+import pathlib
+import platform
+import sys
+import tempfile
+import time
+
+sys.path.insert(0, str(pathlib.Path(__file__).resolve().parents[1]))
+
+
+def stats(values):
+    values = sorted(values)
+    return {"count": len(values), "median_ms": round(values[len(values)//2], 2),
+            "p95_ms": round(values[min(len(values)-1, math.ceil(len(values)*.95)-1)], 2),
+            "max_ms": round(values[-1], 2)} if values else {"count": 0}
+
+
+async def main(output):
+    # Set before importing any app modules: container has import-time initialization.
+    with tempfile.TemporaryDirectory(prefix="notes-agent-task-stress-") as directory:
+        root = pathlib.Path(directory)
+        os.environ.update(APP_DATA_DIR=str(root / 'data'), APP_DB_PATH=str(root / 'app.db'),
+                          APP_VAULT_PATH=str(root / 'vault'))
+        from app.container import container
+        from app.contracts import AgentRunCreateRequest, AgentRunStatus
+        from app.agent.runtime import AgentRuntime, AgentCapacityError
+        from app.agent.permissions import PermissionMode
+        from app.main import app
+        import httpx
+
+        report = {"python": platform.python_version(), "platform": platform.platform(),
+                  "provider": "mock with 50 ms injected delay per model turn; no network", "results": []}
+
+        def save(name, value):
+            report['results'].append({"scenario": name, **value})
+            output.write_text(json.dumps(report, ensure_ascii=False, indent=2), encoding='utf-8')
+            print(json.dumps(report['results'][-1], ensure_ascii=False), flush=True)
+
+        async def measured(operation):
+            delays = []
+            async def heartbeat():
+                while True:
+                    start = time.perf_counter()
+                    await asyncio.sleep(.01)
+                    delays.append(max(0, (time.perf_counter()-start)*1000-10))
+            pulse = asyncio.create_task(heartbeat())
+            await asyncio.sleep(0)
+            start = time.perf_counter()
+            try:
+                result = await operation()
+                await asyncio.sleep(.02)
+                return {**result, "elapsed_ms": round((time.perf_counter()-start)*1000, 2),
+                        "event_loop_lag": stats(delays)}
+            finally:
+                pulse.cancel()
+                await asyncio.gather(pulse, return_exceptions=True)
+
+        adapter = container.providers.get('mock').adapter
+        original = adapter.complete
+        async def delayed(request):
+            await asyncio.sleep(.05)
+            return await original(request)
+        adapter.complete = delayed
+        runtime = container.agent
+
+        for concurrency in (1, 10, 50, 200):
+            async def batch():
+                durations, sequences, statuses = [], [], []
+                semaphore = asyncio.Semaphore(concurrency)
+                async def one(index):
+                    async with semaphore:
+                        start = time.perf_counter()
+                        created = await runtime.create_run(AgentRunCreateRequest(
+                            input=f'/tool system.echo {{"text":"pressure-{index}"}}',
+                            provider_id='mock', model='mock-1', allowed_tools=['system.echo']))
+                        events = [event async for event in runtime.events(created.run_id)]
+                        done = await runtime.wait(created.run_id)
+                        durations.append((time.perf_counter()-start)*1000)
+                        statuses.append(done.status.value)
+                        sequence = [event.sequence for event in events]
+                        sequences.append(sequence == list(range(len(sequence))))
+                        assert done.status == AgentRunStatus.completed
+                        assert done.tool_results[0].output == {"text": f"pressure-{index}"}
+                        replay = [event.sequence async for event in runtime.events(created.run_id, after_sequence=2)]
+                        assert replay == sequence[3:]
+                        return created.run_id
+                ids = await asyncio.gather(*(one(i) for i in range(max(20, concurrency))))
+                assert all(sequences)
+                recovered = AgentRuntime(container.providers, container.tools, container.permissions,
+                                         trace_repository=runtime.trace_repository)
+                assert all(recovered.get_run(run_id).status == AgentRunStatus.completed for run_id in ids)
+                assert not any(record.subscribers for record in runtime._records.values())
+                return {"concurrency": concurrency, "runs": len(ids), "latency": stats(durations),
+                        "completed": statuses.count('completed'), "ordered_events_and_replay": True,
+                        "terminal_recovery": True, "retained_records": len(runtime._records)}
+            save('agent_tool_runs', await measured(batch))
+
+        # Hold model calls so all 200 records remain active while testing admission.
+        gate = asyncio.Event()
+        async def blocked(request):
+            await gate.wait()
+            return await original(request)
+        adapter.complete = blocked
+        async def capacity():
+            ids = [(await runtime.create_run(AgentRunCreateRequest(input='capacity', provider_id='mock', model='mock-1'))).run_id for _ in range(200)]
+            rejected = False
+            try:
+                await runtime.create_run(AgentRunCreateRequest(input='overflow', provider_id='mock', model='mock-1'))
+            except AgentCapacityError:
+                rejected = True
+            await asyncio.sleep(0)
+            latencies = []
+            for run_id in ids:
+                start = time.perf_counter()
+                await runtime.cancel(run_id)
+                latencies.append((time.perf_counter()-start)*1000)
+            states = await asyncio.gather(*(runtime.wait(run_id) for run_id in ids))
+            assert rejected and all(run.status == AgentRunStatus.cancelled for run in states)
+            assert all(not record.task or record.task.done() for record in runtime._records.values())
+            return {"active_limit": 200, "overflow_rejected": rejected, "cancelled": len(states), "cancel_latency": stats(latencies)}
+        save('capacity_and_cancel', await measured(capacity))
+        adapter.complete = delayed
+
+        async def permissions():
+            tool = container.tools.get('system.echo')
+            previous = tool.definition.permission
+            tool.definition.permission = 'stress.confirm'
+            container.permissions.policy.set_rule('stress.confirm', PermissionMode.confirm)
+            async def one(index):
+                created = await runtime.create_run(AgentRunCreateRequest(input='/tool system.echo {"text":"permission"}',
+                    provider_id='mock', model='mock-1', allowed_tools=['system.echo'], tool_timeout_seconds=30))
+                stream = runtime.events(created.run_id)
+                try:
+                    async for event in stream:
+                        if event.event.value == 'PermissionRequired':
+                            if index % 2: await runtime.cancel(created.run_id)
+                            else: assert await runtime.resolve_permission(created.run_id, str(event.data['request_id']), 'allow')
+                            break
+                finally:
+                    await stream.aclose()
+                return (await runtime.wait(created.run_id)).status.value
+            try:
+                states = await asyncio.wait_for(asyncio.gather(*(one(i) for i in range(20))), 60)
+                assert states.count('completed') == states.count('cancelled') == 10
+                assert not any(record.subscribers for record in runtime._records.values())
+                return {"runs": 20, "approved_completed": 10, "cancelled_waiting_permission": 10, "subscribers_released": True}
+            finally:
+                tool.definition.permission = previous
+        save('permission_wait', await measured(permissions))
+
+        async def failures():
+            active = 0
+            async def injected(request):
+                text = request.messages[-1].content
+                if text == 'inject-provider-error': raise RuntimeError('injected offline provider failure')
+                if text == 'inject-model-timeout': await asyncio.sleep(60)
+                return await delayed(request)
+            tool = container.tools.get('system.echo')
+            executor = tool.executor
+            async def slow_tool(arguments, context):
+                nonlocal active
+                active += 1
+                try:
+                    if arguments.text == 'slow': await asyncio.sleep(60)
+                    value = executor(arguments, context)
+                    return await value if inspect.isawaitable(value) else value
+                finally: active -= 1
+            adapter.complete = injected
+            tool.executor = slow_tool
+            async def one(index):
+                mode = index % 4
+                text = ['normal', 'inject-provider-error', 'inject-model-timeout', '/tool system.echo {"text":"slow"}'][mode]
+                created = await runtime.create_run(AgentRunCreateRequest(input=text, provider_id='mock', model='mock-1',
+                    allowed_tools=['system.echo'], run_timeout_seconds=1 if mode == 2 else 30, tool_timeout_seconds=1))
+                result = await runtime.wait(created.run_id)
+                if mode == 0: assert result.status == AgentRunStatus.completed
+                elif mode == 1: assert result.status == AgentRunStatus.failed and result.error_code == 'AGENT_FAILED'
+                elif mode == 2: assert result.status == AgentRunStatus.failed and result.error_code == 'AGENT_TIMEOUT'
+                else: assert result.tool_results[0].error_code == 'TOOL_TIMEOUT'
+            try:
+                await asyncio.wait_for(asyncio.gather(*(one(i) for i in range(20))), 45)
+                assert active == 0
+                return {"runs": 20, "success": 5, "provider_errors": 5, "model_timeouts": 5,
+                        "tool_timeouts": 5, "remaining_tool_executors": active}
+            finally:
+                adapter.complete = delayed
+                tool.executor = executor
+        save('failure_and_timeout_isolation', await measured(failures))
+
+        async with httpx.AsyncClient(transport=httpx.ASGITransport(app=app), base_url='http://stress.local') as client:
+            for count in (100, 1000):
+                async def tasks():
+                    timings = {name: [] for name in ('create', 'update', 'list', 'delete')}
+                    async def call(method, path, **kwargs):
+                        start = time.perf_counter()
+                        response = await client.request(method, path, **kwargs)
+                        response.raise_for_status()
+                        return response.json(), (time.perf_counter()-start)*1000
+                    semaphore = asyncio.Semaphore(20)
+                    async def create(index):
+                        async with semaphore:
+                            body, duration = await call('POST', '/api/tasks', json={'title': f'压测任务 {index}', 'description': '独立测试数据'})
+                            timings['create'].append(duration)
+                            return body['task_id']
+                    ids = await asyncio.gather(*(create(i) for i in range(count)))
+                    first, _ = await call('GET', '/api/tasks')
+                    seen = []
+                    for offset in range(0, count, 100):
+                        body, duration = await call('GET', f'/api/tasks?limit=100&offset={offset}')
+                        timings['list'].append(duration)
+                        seen.extend(item['task_id'] for item in body['items'])
+                    assert len(set(seen)) == count and set(seen) == set(ids)
+                    async def change(run_id):
+                        async with semaphore:
+                            body, duration = await call('PATCH', f'/api/tasks/{run_id}', json={'status': 'done'})
+                            assert body['status'] == 'done'
+                            timings['update'].append(duration)
+                            _, duration = await call('DELETE', f'/api/tasks/{run_id}')
+                            timings['delete'].append(duration)
+                    await asyncio.gather(*(change(run_id) for run_id in ids))
+                    final, _ = await call('GET', '/api/tasks')
+                    assert final['page']['total'] == 0
+                    return {"tasks": count, "client_concurrency": 20, "latencies": {key: stats(value) for key, value in timings.items()},
+                            "default_page_count": len(first['items']), "default_total": first['page']['total'],
+                            "pagination_complete": True, "final_total": 0}
+                save('task_api_crud', await measured(tasks))
+
+        report['database_bytes'] = (root / 'app.db').stat().st_size
+        report['complete'] = True
+        output.write_text(json.dumps(report, ensure_ascii=False, indent=2), encoding='utf-8')
+        container.plugins.shutdown()
+        container.mcp_servers.shutdown()
+        from app.operation_logs import shutdown_logging
+        await asyncio.to_thread(shutdown_logging)
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--output', type=pathlib.Path, required=True)
+    args = parser.parse_args()
+    args.output.parent.mkdir(parents=True, exist_ok=True)
+    asyncio.run(main(args.output))

backend/scripts/task-http-stress.py

@@ -0,0 +1,96 @@
+"""Real loopback HTTP task load with a separate, temporary Uvicorn process."""
+import argparse
+import asyncio
+import json
+import math
+import os
+from pathlib import Path
+import socket
+import subprocess
+import sys
+import tempfile
+from time import perf_counter
+
+import httpx
+
+
+def stats(values):
+    values = sorted(values)
+    return {'count': len(values), 'p95_ms': round(values[math.ceil(len(values)*.95)-1], 2),
+            'max_ms': round(values[-1], 2)} if values else {'count': 0}
+
+
+async def main(args):
+    with tempfile.TemporaryDirectory(prefix='notes-task-http-') as directory:
+        root = Path(directory)
+        env = {**os.environ, 'APP_DATA_DIR': str(root/'data'), 'APP_DB_PATH': str(root/'app.db'), 'APP_VAULT_PATH': str(root/'vault')}
+        with socket.socket() as sock:
+            sock.bind(('127.0.0.1', 0)); port = sock.getsockname()[1]
+        process = subprocess.Popen([sys.executable, '-m', 'uvicorn', 'app.main:app', '--host', '127.0.0.1', '--port', str(port), '--log-level', 'error'],
+            cwd=Path(__file__).resolve().parents[1], env=env, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL,
+            creationflags=subprocess.CREATE_NO_WINDOW if os.name == 'nt' else 0)
+        try:
+            async with httpx.AsyncClient(base_url=f'http://127.0.0.1:{port}', timeout=30) as client:
+                for _ in range(150):
+                    if process.poll() is not None: raise RuntimeError('Isolated Uvicorn exited')
+                    try:
+                        (await client.get('/health')).raise_for_status(); break
+                    except httpx.HTTPError: await asyncio.sleep(.1)
+                else: raise TimeoutError('Isolated Uvicorn startup')
+                sem = asyncio.Semaphore(args.concurrency)
+                timings = {key: [] for key in ('create', 'update', 'list', 'delete', 'health')}
+                errors = []
+                async def request(method, path, kind, **kwargs):
+                    start = perf_counter()
+                    response = await client.request(method, path, **kwargs)
+                    timings[kind].append((perf_counter()-start)*1000)
+                    response.raise_for_status()
+                    return response.json()
+                async def health():
+                    while True:
+                        try: await request('GET', '/health', 'health')
+                        except httpx.HTTPError as error: errors.append(type(error).__name__)
+                        await asyncio.sleep(.05)
+                heartbeat = asyncio.create_task(health())
+                start = perf_counter()
+                try:
+                    async def create(index):
+                        async with sem:
+                            return (await request('POST', '/api/tasks', 'create', json={'title': f'HTTP 压测 {index}'}))['task_id']
+                    ids = await asyncio.gather(*(create(i) for i in range(args.count)))
+                    seen = []
+                    for offset in range(0, args.count, 100):
+                        page = await request('GET', f'/api/tasks?limit=100&offset={offset}', 'list')
+                        seen.extend(item['task_id'] for item in page['items'])
+                    assert set(seen) == set(ids) and len(seen) == args.count
+                    async def change(task_id):
+                        async with sem:
+                            updated = await request('PATCH', f'/api/tasks/{task_id}', 'update', json={'status': 'done'})
+                            assert updated['status'] == 'done'
+                            await request('DELETE', f'/api/tasks/{task_id}', 'delete')
+                    await asyncio.gather(*(change(task_id) for task_id in ids))
+                    remaining = await request('GET', '/api/tasks', 'list')
+                    assert remaining['page']['total'] == 0
+                finally:
+                    heartbeat.cancel(); await asyncio.gather(heartbeat, return_exceptions=True)
+                report = {'transport': 'real loopback HTTP, separate Uvicorn process', 'tasks': args.count,
+                    'concurrency': args.concurrency, 'elapsed_ms': round((perf_counter()-start)*1000, 2),
+                    'latencies': {key: stats(value) for key,value in timings.items()}, 'health_errors': errors,
+                    'pagination_complete': True, 'final_total': 0}
+                args.output.parent.mkdir(parents=True, exist_ok=True)
+                args.output.write_text(json.dumps(report, ensure_ascii=False, indent=2), encoding='utf-8')
+                print(json.dumps(report, ensure_ascii=False))
+        finally:
+            process.terminate()
+            try: process.wait(timeout=10)
+            except subprocess.TimeoutExpired: process.kill(); process.wait()
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--output', type=Path, required=True)
+    parser.add_argument('--count', type=int, default=1000)
+    parser.add_argument('--concurrency', type=int, default=20)
+    args = parser.parse_args()
+    if args.count < 1 or args.concurrency < 1: parser.error('count and concurrency must be positive')
+    asyncio.run(main(args))

backend/tests/test_agent_core.py

@@ -112,7 +112,7 @@ def test_permission_confirmation_resumes_agent() -> None:
                     break
 
         assert request_id is not None
-        assert container.agent.resolve_permission(
+        assert await container.agent.resolve_permission(
             created.run_id, request_id, "allow_once"
         )
         completed = await container.agent.wait(created.run_id)
@@ -370,8 +370,9 @@ def test_cancelling_permission_wait_cancels_run() -> None:
         )
 
         async with asyncio.timeout(2):
-            while container.agent.get_run(created.run_id).status != AgentRunStatus.waiting_permission:
-                await asyncio.sleep(0)
+            async for event in container.agent.events(created.run_id):
+                if event.event == AgentEventType.permission_required:
+                    break
 
         cancelled = await container.agent.cancel(created.run_id)
         await container.agent.wait(created.run_id)

backend/tests/test_index_activity.py

@@ -0,0 +1,68 @@
+import asyncio
+from types import SimpleNamespace
+
+import pytest
+
+from app.retrieval import activity
+from app.services import index_service
+
+
+@pytest.fixture(autouse=True)
+def reset_activity(monkeypatch):
+    for field in ('active', 'completed', 'failed', 'cancelled'):
+        monkeypatch.setattr(activity, field, 0)
+    monkeypatch.setattr(index_service, '_active_job_id', None)
+    monkeypatch.setattr(index_service, '_active_scope', None)
+    monkeypatch.setattr(index_service, '_last_error', None)
+    monkeypatch.setattr(index_service.repository, 'stats', lambda: {'notes': 16, 'blocks': 3787})
+    monkeypatch.setattr(index_service.repository, 'get_index_meta', lambda: {})
+
+
+def test_pending_rebuild_and_incremental_jobs(monkeypatch):
+    meta = {'workspace_vectors_pending': '1', 'note_vectors_pending:a': '1', 'note_vectors_pending:b': '1'}
+    monkeypatch.setattr(index_service.repository, 'get_index_meta', lambda: meta)
+    status = index_service.get_status()
+    assert status.vector_refresh_required and status.pending_jobs == 1
+    assert status.running_jobs == 0
+    monkeypatch.setattr(index_service, '_active_job_id', 'job_test')
+    monkeypatch.setattr(index_service, '_active_scope', 'all')
+    status = index_service.get_status()
+    assert (status.status, status.pending_jobs, status.running_jobs) == ('running', 1, 1)
+    monkeypatch.setattr(index_service, '_active_scope', 'note')
+    assert index_service.get_status().pending_jobs == 2
+    meta.pop('workspace_vectors_pending')
+    assert index_service.get_status().pending_jobs == 2
+    monkeypatch.setattr(index_service, '_active_job_id', None)
+    monkeypatch.setattr(index_service, '_last_error', 'failed')
+    status = index_service.get_status()
+    assert (status.status, status.pending_jobs, status.running_jobs) == ('failed', 2, 0)
+    meta.clear()
+    assert index_service.get_status().pending_jobs == 0
+
+
+def test_search_activity_covers_completion_failure_and_cancellation():
+    async def scenario():
+        gate = asyncio.Event()
+
+        @activity.track_search
+        async def search(_self, request):
+            await gate.wait()
+            if request.query == 'fail':
+                raise ValueError('failure')
+            return 'ok'
+
+        tasks = [asyncio.create_task(search(None, SimpleNamespace(mode=mode, query=query)))
+                 for mode, query in [('vector', 'ok'), ('hybrid', 'fail'), ('vector', 'cancel'), ('fts', 'ok')]]
+        await asyncio.sleep(0)
+        assert index_service.get_status().active_searches == 3
+        tasks[2].cancel()
+        with pytest.raises(asyncio.CancelledError):
+            await tasks[2]
+        gate.set()
+        results = await asyncio.gather(*tasks, return_exceptions=True)
+        assert results[0] == results[3] == 'ok'
+        status = index_service.get_status()
+        assert (status.active_searches, status.completed_searches, status.failed_searches, status.cancelled_searches) == (0, 1, 1, 1)
+        assert status.pending_jobs == 0
+
+    asyncio.run(scenario())

backend/tests/test_local_models.py

@@ -12,6 +12,42 @@ from app.local_models.runtime import Runtime
 from app.providers.base import ProviderError
 
 
+@pytest.mark.parametrize('threaded', [False, True])
+def test_large_embedding_result_crosses_pipe_limit_without_truncation(monkeypatch, tmp_path, threaded):
+    import app.local_models.runtime as module
+    import app.local_models.process as process_module
+    from app.local_models.protocol import response_lines
+    vector = [0.012345678901234567] * 384
+    result = {'result': [vector] * 2111}
+    assert len(json.dumps(result).encode()) > 16 * 1024 * 1024
+    assert max(map(len, response_lines(result, 'embedding'))) < 16 * 1024 * 1024
+    worker = tmp_path / 'large_worker.py'
+    protocol_dir = Path(module.__file__).parent
+    worker.write_text(
+        'import sys,json\n'
+        f'sys.path.insert(0, {str(protocol_dir)!r})\n'
+        'from protocol import response_lines\n'
+        'request=json.load(sys.stdin)\n'
+        'vector=[0.012345678901234567]*384\n'
+        'for line in response_lines({"result":[vector]*len(request["payload"]["texts"])}, "embedding"):\n'
+        ' sys.stdout.write(line)\n', encoding='utf-8')
+    monkeypatch.setattr(module, 'read_state', lambda key: {'status': 'installed'})
+    monkeypatch.setattr(module, 'interpreter', lambda *_: Path(sys.executable))
+    original_async = asyncio.create_subprocess_exec
+    original_threaded = process_module.ThreadedProcess
+
+    async def spawn(*args, **kwargs):
+        if threaded:
+            raise NotImplementedError
+        return await original_async(sys.executable, str(worker), **kwargs)
+
+    monkeypatch.setattr(module.asyncio, 'create_subprocess_exec', spawn)
+    monkeypatch.setattr(process_module, 'ThreadedProcess',
+                        lambda args, **kwargs: original_threaded((sys.executable, str(worker)), **kwargs))
+    actual = asyncio.run(Runtime().infer('bekko', 'embedding', {'texts': ['test'] * 2111}))
+    assert actual == result['result']
+
+
 def test_download_resumes_partial_and_checks_digest(monkeypatch):
     payload = b'verified-model-weights'
     entry = {'path':'model.safetensors','size':len(payload),'hash':hashlib.sha256(payload).hexdigest(),

backend/tests/test_operation_logs.py

@@ -0,0 +1,151 @@
+import asyncio
+import json
+import logging
+import threading
+from pathlib import Path
+
+from app.operation_logs import LogStore, ApplicationLogHandler, get_store, log_event, shutdown_logging
+
+
+def test_logs_persist_filter_cursor_and_retention(tmp_path):
+    store = LogStore(tmp_path / 'logs.db', retain=3)
+    try:
+        for i in range(6):
+            store.emit('ERROR' if i % 2 else 'INFO', 'vectors', 'embedding.failed', {'run_id': f'run_{i}'})
+        store.queue.join()
+        first = store.query(limit=2)
+        assert len(first['items']) == 2 and first['next_cursor']
+        assert len(store.query(before=first['next_cursor'])['items']) == 1
+        assert len(store.query(level='ERROR')['items']) == 2
+        assert len(store.query(q='run_5')['items']) == 1
+        assert not store.query(source='tasks')['items']
+    finally:
+        store.close()
+    reopened = LogStore(tmp_path / 'logs.db', retain=3)
+    try:
+        assert len(reopened.query()['items']) == 3
+    finally:
+        reopened.close()
+
+
+def test_logs_exclude_content_and_legacy_exception_messages():
+    try:
+        log_event('vectors', 'embedding.failed', level='ERROR',
+                  error=ValueError('private note and secret'), model='embedding-v1',
+                  prompt='private note', arguments={'api_key': 'secret'}, api_key='secret')
+        handler = ApplicationLogHandler()
+        record = logging.LogRecord('app.sample', logging.ERROR, __file__, 1,
+                                   'private note and secret %s', ('credentials',), None)
+        handler.emit(record)
+        handler.emit(record)  # a logger propagated to another installed handler
+        store = get_store()
+        store.queue.join()
+        data = json.dumps(store.query())
+        assert len(store.query()['items']) == 2
+        assert 'private note' not in data and 'credentials' not in data and 'api_key' not in data
+        assert 'ValueError' in data and 'embedding-v1' in data
+    finally:
+        shutdown_logging()
+
+
+def test_http_log_correlates_task_operations_without_body():
+    import httpx
+    from app.main import app
+    async def scenario():
+        async with httpx.AsyncClient(transport=httpx.ASGITransport(app=app), base_url='http://test') as client:
+            response = await client.post('/api/tasks', json={'title': 'private title'})
+            assert response.status_code == 200
+            rid = response.headers['x-request-id']
+            store = get_store()
+            await asyncio.to_thread(store.queue.join)
+            result = (await client.get('/api/logs', params={'q': rid})).json()
+            assert len(result['items']) >= 2
+            assert 'private title' not in json.dumps(result)
+            assert any(item['event'] == 'task.created' for item in result['items'])
+            assert (await client.get('/api/logs', params={'limit': 201})).status_code == 422
+    try:
+        asyncio.run(scenario())
+    finally:
+        shutdown_logging()
+
+
+def test_trace_writer_batches_off_loop_and_survives_cancel():
+    from app.agent.async_trace import AsyncTraceWriter
+    started, release = threading.Event(), threading.Event()
+    class Repository:
+        def write_batch(self, jobs):
+            assert threading.current_thread() is not threading.main_thread()
+            started.set()
+            assert release.wait(2)
+            self.jobs = jobs
+    async def scenario():
+        repo = Repository()
+        writer = AsyncTraceWriter(repo)
+        pending = asyncio.create_task(writer.submit('save', 'snapshot'))
+        while not started.is_set():
+            await asyncio.sleep(.001)
+        pending.cancel()
+        writer.worker.cancel()  # simultaneous application shutdown
+        await asyncio.sleep(.005)
+        assert not pending.done()
+        release.set()
+        assert await asyncio.wait_for(pending, 2) is True
+        assert repo.jobs == [('save', ('snapshot',))]
+        assert writer.queue.empty()
+    asyncio.run(scenario())
+
+
+def test_trace_write_failure_is_reported_and_next_submission_recovers():
+    from app.agent.async_trace import AsyncTraceWriter
+    class Repository:
+        fail = True
+        def write_batch(self, jobs):
+            if self.fail:
+                self.fail = False
+                raise OSError('disk unavailable')
+    async def scenario():
+        import pytest
+        writer = AsyncTraceWriter(Repository())
+        with pytest.raises(OSError):
+            await writer.submit('save', 'first')
+        assert not await writer.submit('save', 'second')
+        await writer.queue.join()
+    asyncio.run(scenario())
+
+
+def test_log_write_failure_does_not_stall_queue(tmp_path, monkeypatch):
+    store = LogStore(tmp_path / 'failed.db')
+    try:
+        def broken():
+            raise OSError('disk unavailable')
+        monkeypatch.setattr(store, '_connect', broken)
+        store.emit('ERROR', 'vectors', 'embedding.failed', {'duration_ms': float('nan')})
+        store.queue.join()
+        assert store.failed == 1
+    finally:
+        store.close()
+
+
+def test_cancelled_task_write_keeps_its_slot_until_commit():
+    from app.services.task_service import write_in_background
+    started, release = threading.Event(), threading.Event()
+    order = []
+    def first():
+        started.set()
+        assert release.wait(2)
+        order.append('first')
+    async def scenario():
+        import pytest
+        pending = asyncio.create_task(write_in_background(first))
+        while not started.is_set():
+            await asyncio.sleep(.001)
+        pending.cancel()
+        second = asyncio.create_task(write_in_background(lambda: order.append('second')))
+        await asyncio.sleep(.01)
+        assert order == []
+        release.set()
+        with pytest.raises(asyncio.CancelledError):
+            await pending
+        await second
+        assert order == ['first', 'second']
+    asyncio.run(scenario())

docs/README.md

@@ -97,3 +97,5 @@
 - [Markdown 语法预设与外部文件刷新](development/Markdown语法预设与外部文件刷新.md)
 
 - [长文渲染优化与压测报告](development/长文渲染优化与压测报告.md)
+- [Agent 与任务压测报告](development/Agent与任务压测报告.md)
+- [后台运行日志与压力问题修复](development/后台运行日志与压力问题修复.md)

docs/contracts/后端接口契约-开发版.md

@@ -204,6 +204,17 @@ RunCancelled
 - `POST /api/workspace/open` 返回可使用的 WorkspaceSnapshot，不等待向量推理。
 - `PATCH /api/notes/{note_id}` 成功代表正文、元数据和 FTS 已保存；后台向量失败不撤销这次保存。
 - `GET /api/index/status` 新增 `vector_refresh_required: boolean`，表示工作区或笔记存在向量待处理标记。该字段不是进度百分比；任务失败时也可为 true。
+- `pending_jobs` 返回真实未完成索引任务数（包含运行中），不再固定为 0。全库待重建或运行中的全量重建计一个任务；逐笔记刷新按待处理标记计数。`running_jobs` 返回当前运行数。失败后保留的待重建标记仍计入未完成数。
+- `active_searches`、`completed_searches`、`failed_searches`、`cancelled_searches` 分别表示向量/混合检索的进行中、完成、失败、取消次数，覆盖搜索、对话和 Agent 经统一检索引擎发起的调用，排除纯 FTS；混合检索回退 FTS 后成功仍计完成。计数仅保存在当前服务进程内，重启归零，与索引队列互相独立。
+- 设置与搜索页每秒轮询状态，其他页面空闲时每 5 秒轮询；不是事件推送。短检索可能无法观察到进行中状态，但完成/失败计数会保留。设置页与底部状态栏复用状态标签，未知字段显示“未获取”。
 - `POST /api/index/rebuild` 仍仅支持全量重建，并等待结果；不要将上述异步语义推广到所有索引 API。
 
 状态、恢复限制与验证见 [工作区后台索引与保存开发说明](../development/工作区后台索引与保存开发说明.md)。
+
+## 2026-09-06：统一运行日志
+
+`GET /api/logs` 返回独立持久化的后台操作日志，无需打开 Vault。参数：`limit` 默认 50、最大 200；`before` 为上一页 next_cursor；`level` 为 INFO/WARNING/ERROR/CRITICAL 或空；`source` 按模块精确匹配；`q` 在事件名和脱敏元数据中做字面搜索。
+
+返回 `items: [{id,timestamp,level,source,event,details}]`、`next_cursor`（无后续页时 null）、`sources`、`pending`、`dropped`、`write_failures`、`retention`。日志按 ID 倒序，保留最近 20,000 条。响应头 `X-Request-ID` 与后台日志关联。不得依赖日志记录笔记正文、工具参数、凭据或原始异常消息。
+
+队列、错误处理、字段白名单和验证方法见 [后台运行日志与压力问题修复](../development/后台运行日志与压力问题修复.md)。

docs/development/Agent与任务压测报告.md

@@ -0,0 +1,156 @@
+# Agent 与任务压测报告
+
+> 日期：2026-09-06。范围：当前第二阶段 Agent Runtime、任务 API、任务列表及 Trace 组件。测试在 Windows 11、Python 3.12.6、独立无头 Chrome 下执行，前端为 Vite 开发模式，纸间时光版本 1.8.1。
+
+## 1. 结论
+
+功能正确性检查通过：Agent 工具调用、事件序号与回放、终态持久化恢复、容量拒绝、取消、权限等待、故障隔离，以及任务增删改查和分页均得到预期结果。性能仍有三项明确问题：
+
+| 优先级 | 问题 | 本轮证据 | 建议方向 |
+| --- | --- | --- | --- |
+| P1 | 任务列表未加载后续页；Agent 历史列表也没有后续分页入口 | 100、1000 条任务的实际页面均只请求 `/api/tasks` 并显示 50 条；Agent store 同样仅调用默认分页一次，接口默认 50 | 增加服务端筛选与分页/加载更多，显示总量，防止统计仅基于已加载项 |
+| P1 | 高并发 Agent 阻塞事件循环 | 200 并发的完成延迟 P95 约 10.55 秒；进程内心跳最大延迟约 3.56 秒 | 分析同步持久化，设计有界执行调度及顺序写入，保留事件落盘、终态与回放一致性 |
+| P1 | 大 Trace 的树形筛选长时间阻塞 | 2000 事件树形搜索约 483–617 ms；10000 事件约 25.91 秒 | 为匹配的 sequence/tool/model ID 建 Set，避免逐节点重复遍历事件；再评估分段显示及增量更新 |
+
+本次新增的是可复现压测与报告，没有把上述生产问题标记为已修复。页面滚动与树形搜索是不同瓶颈：10000 事件的滚动 P95 约 40 ms，并不能说明搜索交互也流畅。
+
+## 2. 隔离与方法
+
+- 后端脚本在导入任何 app 模块前，将 `APP_DATA_DIR`、`APP_DB_PATH`、`APP_VAULT_PATH` 指向临时目录，结束后清理；不读写用户 Vault、现有任务及 Provider 凭据。
+- Agent 使用内置 Mock Provider，每轮模型调用注入 50 ms 异步等待，正常样本包含一次 `system.echo` 工具调用和两轮模型调用；不调用真实厂商，也不衡量回答质量或真实模型吞吐。
+- 进程内运行直接调用真实 Runtime、SQLite 和任务 ASGI 路由。任务 HTTP 复核另起独立 Uvicorn 进程，用真实回环连接执行，避免将 ASGI 驱动的连续无让出执行误解为网络服务延迟。
+- 前端挂载真实 TasksView、TraceTimeline 和 Pinia store。压测页拦截全部 fetch，不向真实后端发出请求。任务接口夹具保留默认 50 条分页，先测实际加载条数，再注入完整列表测试渲染上限，两者分开记录。
+- Trace 由确定性模型开始/完成、工具调用/结果事件组成，带调用与父节点 ID；测量首次渲染、时间线过滤、树形切换、匹配全部节点的树形搜索。
+- 滚动用 CDP 派发 120 次滚轮事件，记录真实滚动容器及 `maxScrollTop`，防止对未滚动页面统计帧间隔。Trace 测试容器显式解除应用根节点的裁剪，由独立滚动区承担真实 Agent 页滚动容器的职责。
+
+本轮每个前端配置测一次；开发编译、后台负载、缓存和浏览器调度都会影响结果，数据用于发现瓶颈，不作为生产环境 SLA。首次渲染计时不包含模块下载，包含 Vue 更新及两个 animation frame。
+
+## 3. Agent 后端
+
+### 3.1 正常工具调用与回放
+
+| 并发数 | 运行数 | 完成延迟中位数（ms） | 完成延迟 P95（ms） | 场景心跳最大延迟（ms） |
+| ---: | ---: | ---: | ---: | ---: |
+| 1 | 20 | 146.20 | 170.13 | 26.84 |
+| 10 | 20 | 405.75 | 505.74 | 136.71 |
+| 50 | 50 | 2234.45 | 2304.42 | 798.84 |
+| 200 | 200 | 10262.47 | 10554.52 | 3559.97 |
+
+290 个正常运行全部完成，工具返回内容逐项一致；实时订阅事件序号连续，`after_sequence=2` 回放与原事件后缀一致。新的 Runtime 实例可以从 SQLite 恢复这些终态运行。订阅者集合最终清空，进程内保留记录不超过 200。
+
+“并发”是同时提交的协程数，不代表独立 CPU 工作线程。当前 queued 是启动前状态，Runtime 并没有把超额活跃运行无限排入执行队列。场景心跳还包含提交、持久化回放与恢复校验，不能将其全部归为模型执行耗时；50、200 并发场景的心跳采样数仅 8 个，表中因此列最大值而非宣称稳定分位数。
+
+代码定位：`AgentRuntime._publish()` 同步调用 `AgentTraceRepository.append_event()`，后者逐事件连接 SQLite 并提交事务；`connect()` 还加载扩展和检查迁移。这是需要进一步拆分测量的阻塞路径，本轮未完成各子步骤 CPU/磁盘成本归因。
+
+### 3.2 容量、取消与故障注入
+
+- 保持 200 个模型调用活跃，第 201 次创建得到 `AgentCapacityError`；随后取消全部 200 个运行，全部进入 cancelled，后台任务均结束。
+- 20 个运行等待权限：10 个允许后完成，10 个等待中取消，订阅者均释放。
+- 20 个混合运行：5 个正常完成、5 个 Provider 异常、5 个模型超时、5 个工具超时，均获得预期状态或错误码；工具执行器剩余数量为 0。
+- 正常回放和故障场景合计创建 530 个运行，临时数据库最终约 2.95 MB。工具超时被记录为 ToolResult 错误，后续 Mock 模型仍可能完成运行，不将它误算为整个 Run 必然失败。
+
+这里的“恢复”是新 Runtime 读取终态持久化数据，未模拟 OS 强杀时的写入中断。SSE 通过 Runtime 的事件生成器验证序号及断点回放，没有进行真实网络慢读者/断网压力测试。
+
+## 4. 任务 API
+
+进程内分别对 100、1000 条任务执行创建、逐页读取、更新为 done、删除，所有 ID 完整，最终总量为 0。默认接口每页 50 条，显式每页 100 条遍历可以取回全部数据。
+
+ASGITransport 的 1000 条突发操作中，心跳出现约 14 秒延迟：测试客户端与同步路由处于同一事件循环，连续就绪协程缺少网络等待，不能将其视作真实 HTTP 健康检查延迟。因此增加独立 Uvicorn + 回环 HTTP 复核：
+
+| 操作 | 数量 | P95（ms） | 最大值（ms） |
+| --- | ---: | ---: | ---: |
+| 创建 | 1000 | 116.45 | 134.91 |
+| 更新 | 1000 | 159.29 | 193.37 |
+| 删除 | 1000 | 156.43 | 190.10 |
+| 分页/收尾查询 | 11 | 20.96 | 20.96 |
+| 并行健康检查 | 117 | 157.00 | 195.07 |
+
+HTTP 客户端并发 20，总耗时约 18.31 秒；健康检查零失败，分页无重复/遗漏，最终任务数为 0。此处是本机单次结果，未覆盖跨网络、长期持久负载或多进程同时写同一数据库。
+
+## 5. 前端
+
+### 5.1 任务列表
+
+100、1000 条数据的实际加载阶段都只有一次 `/api/tasks` 请求，store 中均为 50 条。以下是额外注入完整 1000 条数据后的结果，不是生产页面当前可以加载 1000 条的证明。
+
+| 主题 | 完整列表渲染（ms） | 完成状态筛选（ms） |
+| --- | ---: | ---: |
+| 默认浅色 | 117.4 | 44.1 |
+| 默认深色 | 137.8 | 47.8 |
+| 纸间时光 1.8.1 | 150.0 | 59.5 |
+
+1000 条列表约 11007 个 DOM 节点，实际滚动最远达到 81000 px；筛选 done 得到 334 条，与夹具期望一致。100 条样本筛选得到 34 条，也一致。默认浅色的 1000 条滚动 P95 约 30.2 ms，纸间时光约 50.1 ms；样本数少，暂不据此认定新的单一 CSS 根因。
+
+### 5.2 Agent Trace
+
+| 事件数/主题 | 首次渲染（ms） | 时间线搜索（ms） | 树形切换（ms） | 树形全匹配搜索（ms） |
+| --- | ---: | ---: | ---: | ---: |
+| 2000 / 默认浅色 | 283.8 | 97.4 | 64.0 | 617.2 |
+| 2000 / 默认深色 | 289.0 | 74.5 | 62.9 | 483.0 |
+| 2000 / 纸间时光 | 337.3 | 86.3 | 62.1 | 540.1 |
+| 10000 / 纸间时光 | 1803.9 | 582.8 | 317.5 | 25914.8 |
+
+200 事件的树形搜索约 20–29 ms。2000 事件时间线约 20542 个 DOM 节点，10000 事件约 102542 个。查询“压力测试 1”分别命中 444、4444 条事件，与直接检查输入数据的结果一致；树形搜索“压力测试”匹配所有事件，会自动展开匹配子树。
+
+代码定位：`TraceTimeline.filteredTree` 为每个节点调用 `filteredEvents.some(...)`。节点数和匹配事件数一起增加时，会产生近似二次增长的匹配工作，随后还需构造并渲染展开子树。建议先用匹配 ID 集合消除嵌套扫描，再测 DOM 更新成本；不要仅用防抖隐藏单次 25 秒阻塞。
+
+10000 是扩大数据规模的诊断测试，高于 Runtime 默认内存事件保留量 2000；它直接向组件传入事件，不代表当前单次 API 页或实时 store 默认会收到这一数量。也未覆盖逐事件 SSE 增量刷新的端到端成本。
+
+## 6. 复现与原始数据
+
+```powershell
+# 后端：独立临时数据，离线 Mock
+backend/.venv/Scripts/python.exe backend/scripts/agent-task-stress.py --output .local-plans/agent-task-backend.json
+# 真实 HTTP：独立 Uvicorn、随机回环端口
+backend/.venv/Scripts/python.exe backend/scripts/task-http-stress.py --count 1000 --concurrency 20 --output .local-plans/task-http.json
+# 前端：先启动独立 Vite，另一个终端执行后续命令
+npm --prefix frontend run dev -- --port 5175 --strictPort
+backend/.venv/Scripts/python.exe frontend/tests/performance/run-stress.py --url 'http://127.0.0.1:5175/tests/performance/agent-task.html?kind=tasks&theme=paper-moments' --scroll --sizes 100 1000 --runs 1 --output .local-plans/task-ui.json
+backend/.venv/Scripts/python.exe frontend/tests/performance/run-stress.py --url 'http://127.0.0.1:5175/tests/performance/agent-task.html?kind=trace&theme=paper-moments' --scroll --sizes 200 2000 10000 --runs 1 --output .local-plans/trace-ui.json
+```
+
+URL 的 theme 可换为 light、dark。测试应串行运行，避免不同负载相互争用；10k Trace 树形筛选可能长时间占用测试浏览器。浏览器使用临时用户目录，不接管用户当前浏览器。
+
+- [Agent 与进程内任务 API 数据](performance/2026-09-06-agent-task-backend.json)
+- [真实 HTTP 任务数据](performance/2026-09-06-task-http.json)
+- [前端 13 组样本数据](performance/2026-09-06-agent-task-ui.json)
+- [前端压测工具](../../frontend/tests/performance/README.md)
+
+附加回归：`test_agent_core.py`、`test_api.py` 共 26 项通过。脚本中的状态、序号、输出、分页与筛选断言均通过。未提交或推送本次材料。
+
+## 7. 修复后复测（2026-09-06）
+
+以上保留首次压测基线。本节对应后台 Trace 批量写入、任务后台写入、完整列表加载、Trace 集合匹配/分页和统一日志接入后的实现。样本开启新操作日志，仍只调用隔离 Mock。
+
+| 项目 | 修复前 | 修复后 |
+| --- | ---: | ---: |
+| 200 并发 Agent 完成 P95 | 10,554.52 ms | 1,233.12 ms |
+| 200 并发测量区间事件循环最大延迟 | 3,559.97 ms | 509.00 ms |
+| 纸间时光 10k Trace 首次渲染 | 1,803.9 ms | 94.4 ms |
+| 纸间时光 10k Trace 树形全匹配筛选 | 25,914.8 ms | 189.2 ms |
+| 纸间时光 10k Trace 首屏 DOM 节点 | 约 102,542 | 1,852 |
+| 1,000 条任务首次实际加载 | 50 条 | 1,000 条（10 次 API 请求） |
+
+Agent 测量区间还包含同步读回、校验和重启恢复，最大心跳延迟不是纯执行阶段指标。290 次普通运行、200 个容量/取消场景、20 个权限场景、20 个失败/超时场景全部通过，订阅者和工具执行器释放。不能声称消除了所有主线程工作。
+
+Trace 搜索检查完整数据，只有渲染分页。10k 样本滚动 frame gap P95 为 10.1 ms，无 longtask；时间线筛选 284.9 ms，树形切换 100.9 ms。这是单次本机样本，不代表所有硬件与实时 SSE 输入。
+
+1,000 条任务界面每页 100 条；筛选后数据总数 334，当前页 100。筛选 18.7 ms，滚动 frame gap P95 为 30 ms，无 longtask。断言同时检查完整数据量和分页渲染数量。
+
+真实 HTTP 测试 1,000 条任务、20 并发，CRUD 全部成功，分页完整，最终任务数 0：
+
+| 指标 | 修复前 | 修复后 |
+| --- | ---: | ---: |
+| health P95 | 157.00 ms | 38.64 ms |
+| 创建 P95 | 116.45 ms | 157.68 ms |
+| 更新 P95 | 159.29 ms | 208.68 ms |
+| 删除 P95 | 156.43 ms | 205.45 ms |
+| 总耗时 | 18.31 s | 24.51 s |
+
+后台排队和操作记录改善了无关请求的响应，但这组样本写入吞吐下降，不能描述为 CRUD 全面提速。后续可以评估任务事务批量化与连接初始化开销；本次没有降低 SQLite 持久化级别。
+
+- [Agent / 进程内任务复测](performance/2026-09-06-agent-task-backend-fixed.json)
+- [真实 HTTP 任务复测](performance/2026-09-06-task-http-fixed.json)
+- [Trace 浏览器复测](performance/2026-09-06-agent-trace-ui-fixed.json)
+- [任务浏览器复测](performance/2026-09-06-task-ui-fixed.json)
+- [日志架构与验收说明](后台运行日志与压力问题修复.md)

docs/development/performance/2026-09-06-agent-task-backend-fixed.json

@@ -0,0 +1,230 @@
+{
+  "python": "3.12.6",
+  "platform": "Windows-11-10.0.26100-SP0",
+  "provider": "mock with 50 ms injected delay per model turn; no network",
+  "results": [
+    {
+      "scenario": "agent_tool_runs",
+      "concurrency": 1,
+      "runs": 20,
+      "latency": {
+        "count": 20,
+        "median_ms": 150.79,
+        "p95_ms": 169.57,
+        "max_ms": 178.52
+      },
+      "completed": 20,
+      "ordered_events_and_replay": true,
+      "terminal_recovery": true,
+      "retained_records": 20,
+      "elapsed_ms": 3047.59,
+      "event_loop_lag": {
+        "count": 995,
+        "median_ms": 0,
+        "p95_ms": 5.65,
+        "max_ms": 21.83
+      }
+    },
+    {
+      "scenario": "agent_tool_runs",
+      "concurrency": 10,
+      "runs": 20,
+      "latency": {
+        "count": 20,
+        "median_ms": 187.48,
+        "p95_ms": 214.02,
+        "max_ms": 214.58
+      },
+      "completed": 20,
+      "ordered_events_and_replay": true,
+      "terminal_recovery": true,
+      "retained_records": 40,
+      "elapsed_ms": 514.15,
+      "event_loop_lag": {
+        "count": 192,
+        "median_ms": 0,
+        "p95_ms": 4.82,
+        "max_ms": 20.02
+      }
+    },
+    {
+      "scenario": "agent_tool_runs",
+      "concurrency": 50,
+      "runs": 50,
+      "latency": {
+        "count": 50,
+        "median_ms": 364.9,
+        "p95_ms": 366.99,
+        "max_ms": 367.3
+      },
+      "completed": 50,
+      "ordered_events_and_replay": true,
+      "terminal_recovery": true,
+      "retained_records": 90,
+      "elapsed_ms": 526.56,
+      "event_loop_lag": {
+        "count": 172,
+        "median_ms": 0,
+        "p95_ms": 4.57,
+        "max_ms": 69.89
+      }
+    },
+    {
+      "scenario": "agent_tool_runs",
+      "concurrency": 200,
+      "runs": 200,
+      "latency": {
+        "count": 200,
+        "median_ms": 1118.63,
+        "p95_ms": 1233.12,
+        "max_ms": 1237.31
+      },
+      "completed": 200,
+      "ordered_events_and_replay": true,
+      "terminal_recovery": true,
+      "retained_records": 200,
+      "elapsed_ms": 1839.2,
+      "event_loop_lag": {
+        "count": 470,
+        "median_ms": 0,
+        "p95_ms": 2.6,
+        "max_ms": 509.0
+      }
+    },
+    {
+      "scenario": "capacity_and_cancel",
+      "active_limit": 200,
+      "overflow_rejected": true,
+      "cancelled": 200,
+      "cancel_latency": {
+        "count": 200,
+        "median_ms": 7.71,
+        "p95_ms": 10.8,
+        "max_ms": 17.37
+      },
+      "elapsed_ms": 3613.48,
+      "event_loop_lag": {
+        "count": 1613,
+        "median_ms": 0,
+        "p95_ms": 0,
+        "max_ms": 7.86
+      }
+    },
+    {
+      "scenario": "permission_wait",
+      "runs": 20,
+      "approved_completed": 10,
+      "cancelled_waiting_permission": 10,
+      "subscribers_released": true,
+      "elapsed_ms": 388.83,
+      "event_loop_lag": {
+        "count": 72,
+        "median_ms": 0,
+        "p95_ms": 9.9,
+        "max_ms": 15.27
+      }
+    },
+    {
+      "scenario": "failure_and_timeout_isolation",
+      "runs": 20,
+      "success": 5,
+      "provider_errors": 5,
+      "model_timeouts": 5,
+      "tool_timeouts": 5,
+      "remaining_tool_executors": 0,
+      "elapsed_ms": 1295.29,
+      "event_loop_lag": {
+        "count": 152,
+        "median_ms": 0,
+        "p95_ms": 7.2,
+        "max_ms": 17.24
+      }
+    },
+    {
+      "scenario": "task_api_crud",
+      "tasks": 100,
+      "client_concurrency": 20,
+      "latencies": {
+        "create": {
+          "count": 100,
+          "median_ms": 214.09,
+          "p95_ms": 264.51,
+          "max_ms": 309.99
+        },
+        "update": {
+          "count": 100,
+          "median_ms": 221.48,
+          "p95_ms": 403.74,
+          "max_ms": 495.1
+        },
+        "list": {
+          "count": 1,
+          "median_ms": 7.92,
+          "p95_ms": 7.92,
+          "max_ms": 7.92
+        },
+        "delete": {
+          "count": 100,
+          "median_ms": 232.9,
+          "p95_ms": 468.48,
+          "max_ms": 475.63
+        }
+      },
+      "default_page_count": 50,
+      "default_total": 100,
+      "pagination_complete": true,
+      "final_total": 0,
+      "elapsed_ms": 3673.22,
+      "event_loop_lag": {
+        "count": 2337,
+        "median_ms": 0,
+        "p95_ms": 0,
+        "max_ms": 118.92
+      }
+    },
+    {
+      "scenario": "task_api_crud",
+      "tasks": 1000,
+      "client_concurrency": 20,
+      "latencies": {
+        "create": {
+          "count": 1000,
+          "median_ms": 200.87,
+          "p95_ms": 237.75,
+          "max_ms": 376.8
+        },
+        "update": {
+          "count": 1000,
+          "median_ms": 220.04,
+          "p95_ms": 260.19,
+          "max_ms": 300.07
+        },
+        "list": {
+          "count": 10,
+          "median_ms": 7.89,
+          "p95_ms": 9.61,
+          "max_ms": 9.61
+        },
+        "delete": {
+          "count": 1000,
+          "median_ms": 218.1,
+          "p95_ms": 266.23,
+          "max_ms": 316.14
+        }
+      },
+      "default_page_count": 50,
+      "default_total": 1000,
+      "pagination_complete": true,
+      "final_total": 0,
+      "elapsed_ms": 32562.93,
+      "event_loop_lag": {
+        "count": 24893,
+        "median_ms": 0,
+        "p95_ms": 0,
+        "max_ms": 91.85
+      }
+    }
+  ],
+  "database_bytes": 2981888,
+  "complete": true
+}

docs/development/performance/2026-09-06-agent-task-backend.json

@@ -0,0 +1,230 @@
+{
+  "python": "3.12.6",
+  "platform": "Windows-11-10.0.26100-SP0",
+  "provider": "mock with 50 ms injected delay per model turn; no network",
+  "results": [
+    {
+      "scenario": "agent_tool_runs",
+      "concurrency": 1,
+      "runs": 20,
+      "latency": {
+        "count": 20,
+        "median_ms": 146.2,
+        "p95_ms": 170.13,
+        "max_ms": 171.23
+      },
+      "completed": 20,
+      "ordered_events_and_replay": true,
+      "terminal_recovery": true,
+      "retained_records": 20,
+      "elapsed_ms": 3041.03,
+      "event_loop_lag": {
+        "count": 190,
+        "median_ms": 5.64,
+        "p95_ms": 16.81,
+        "max_ms": 26.84
+      }
+    },
+    {
+      "scenario": "agent_tool_runs",
+      "concurrency": 10,
+      "runs": 20,
+      "latency": {
+        "count": 20,
+        "median_ms": 405.75,
+        "p95_ms": 505.74,
+        "max_ms": 539.28
+      },
+      "completed": 20,
+      "ordered_events_and_replay": true,
+      "terminal_recovery": true,
+      "retained_records": 40,
+      "elapsed_ms": 1045.19,
+      "event_loop_lag": {
+        "count": 15,
+        "median_ms": 57.63,
+        "p95_ms": 136.71,
+        "max_ms": 136.71
+      }
+    },
+    {
+      "scenario": "agent_tool_runs",
+      "concurrency": 50,
+      "runs": 50,
+      "latency": {
+        "count": 50,
+        "median_ms": 2234.45,
+        "p95_ms": 2304.42,
+        "max_ms": 2307.54
+      },
+      "completed": 50,
+      "ordered_events_and_replay": true,
+      "terminal_recovery": true,
+      "retained_records": 90,
+      "elapsed_ms": 2552.49,
+      "event_loop_lag": {
+        "count": 8,
+        "median_ms": 345.24,
+        "p95_ms": 798.84,
+        "max_ms": 798.84
+      }
+    },
+    {
+      "scenario": "agent_tool_runs",
+      "concurrency": 200,
+      "runs": 200,
+      "latency": {
+        "count": 200,
+        "median_ms": 10262.47,
+        "p95_ms": 10554.52,
+        "max_ms": 10584.03
+      },
+      "completed": 200,
+      "ordered_events_and_replay": true,
+      "terminal_recovery": true,
+      "retained_records": 200,
+      "elapsed_ms": 11442.28,
+      "event_loop_lag": {
+        "count": 8,
+        "median_ms": 1647.87,
+        "p95_ms": 3559.97,
+        "max_ms": 3559.97
+      }
+    },
+    {
+      "scenario": "capacity_and_cancel",
+      "active_limit": 200,
+      "overflow_rejected": true,
+      "cancelled": 200,
+      "cancel_latency": {
+        "count": 200,
+        "median_ms": 4.32,
+        "p95_ms": 5.36,
+        "max_ms": 8.27
+      },
+      "elapsed_ms": 3645.04,
+      "event_loop_lag": {
+        "count": 3,
+        "median_ms": 14.04,
+        "p95_ms": 3610.52,
+        "max_ms": 3610.52
+      }
+    },
+    {
+      "scenario": "permission_wait",
+      "runs": 20,
+      "approved_completed": 10,
+      "cancelled_waiting_permission": 10,
+      "subscribers_released": true,
+      "elapsed_ms": 971.64,
+      "event_loop_lag": {
+        "count": 11,
+        "median_ms": 49.09,
+        "p95_ms": 314.46,
+        "max_ms": 314.46
+      }
+    },
+    {
+      "scenario": "failure_and_timeout_isolation",
+      "runs": 20,
+      "success": 5,
+      "provider_errors": 5,
+      "model_timeouts": 5,
+      "tool_timeouts": 5,
+      "remaining_tool_executors": 0,
+      "elapsed_ms": 1531.14,
+      "event_loop_lag": {
+        "count": 83,
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docs/development/performance/2026-09-06-agent-task-ui.json

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docs/development/performance/2026-09-06-agent-trace-ui-fixed.json

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+  {
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+    "size": 10000,
+    "initialRenderMs": 94.40000000596046,
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+      {
+        "node": "BODY",
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+]

docs/development/performance/2026-09-06-scroll-theme-comparison.json

@@ -0,0 +1,150 @@
+{
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+    "theme": "light",
+    "variant": "default",
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+  "fixed": [
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+      "theme": "paper-moments",
+      "variant": "default",
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+      "variant": "default",
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+      "foldedScrollTop": 0,
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+    },
+    {
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+      "theme": "paper-moments",
+      "variant": "default",
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+  ],
+  "outlineDisabled": [
+    {
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+      "theme": "paper-moments",
+      "variant": "no-outline",
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+    {
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+      "theme": "paper-moments",
+      "variant": "no-outline",
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+      "repeat": 2
+    }
+  ]
+}

docs/development/performance/2026-09-06-scroll-token-cache.json

@@ -0,0 +1,66 @@
+[
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+  {
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+    "theme": "paper-moments",
+    "frameGapsMs": {
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+    },
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+    "scrollHeight": 159554,
+    "foldedScrollTop": 0,
+    "caretAfterFold": 1,
+    "repeat": 2
+  }
+]

docs/development/performance/2026-09-06-task-http-fixed.json

@@ -0,0 +1,36 @@
+{
+  "transport": "real loopback HTTP, separate Uvicorn process",
+  "tasks": 1000,
+  "concurrency": 20,
+  "elapsed_ms": 24509.81,
+  "latencies": {
+    "create": {
+      "count": 1000,
+      "p95_ms": 157.68,
+      "max_ms": 186.7
+    },
+    "update": {
+      "count": 1000,
+      "p95_ms": 208.68,
+      "max_ms": 259.91
+    },
+    "list": {
+      "count": 11,
+      "p95_ms": 23.39,
+      "max_ms": 23.39
+    },
+    "delete": {
+      "count": 1000,
+      "p95_ms": 205.45,
+      "max_ms": 279.12
+    },
+    "health": {
+      "count": 375,
+      "p95_ms": 38.64,
+      "max_ms": 164.76
+    }
+  },
+  "health_errors": [],
+  "pagination_complete": true,
+  "final_total": 0
+}

docs/development/performance/2026-09-06-task-http.json

@@ -0,0 +1,36 @@
+{
+  "transport": "real loopback HTTP, separate Uvicorn process",
+  "tasks": 1000,
+  "concurrency": 20,
+  "elapsed_ms": 18312.92,
+  "latencies": {
+    "create": {
+      "count": 1000,
+      "p95_ms": 116.45,
+      "max_ms": 134.91
+    },
+    "update": {
+      "count": 1000,
+      "p95_ms": 159.29,
+      "max_ms": 193.37
+    },
+    "list": {
+      "count": 11,
+      "p95_ms": 20.96,
+      "max_ms": 20.96
+    },
+    "delete": {
+      "count": 1000,
+      "p95_ms": 156.43,
+      "max_ms": 190.1
+    },
+    "health": {
+      "count": 117,
+      "p95_ms": 157.0,
+      "max_ms": 195.07
+    }
+  },
+  "health_errors": [],
+  "pagination_complete": true,
+  "final_total": 0
+}

docs/development/performance/2026-09-06-task-ui-fixed.json

@@ -0,0 +1,70 @@
+[
+  {
+    "kind": "tasks",
+    "theme": "paper-moments",
+    "size": 1000,
+    "initialRenderMs": 173,
+    "requests": [
+      "/api/tasks?limit=100&offset=0",
+      "/api/tasks?limit=100&offset=100",
+      "/api/tasks?limit=100&offset=200",
+      "/api/tasks?limit=100&offset=300",
+      "/api/tasks?limit=100&offset=400",
+      "/api/tasks?limit=100&offset=500",
+      "/api/tasks?limit=100&offset=600",
+      "/api/tasks?limit=100&offset=700",
+      "/api/tasks?limit=100&offset=800",
+      "/api/tasks?limit=100&offset=900"
+    ],
+    "initialTaskCount": 1000,
+    "fullListRenderMs": 85.39999997615814,
+    "fullListIsInjected": true,
+    "renderedTasks": 100,
+    "domNodes": 1111,
+    "scrollContainers": [
+      {
+        "node": "HTML",
+        "height": 905,
+        "scrollHeight": 905,
+        "overflow": "hidden",
+        "position": "static"
+      },
+      {
+        "node": "BODY",
+        "height": 905,
+        "scrollHeight": 905,
+        "overflow": "hidden",
+        "position": "static"
+      },
+      {
+        "node": "viewport",
+        "height": 905,
+        "scrollHeight": 905,
+        "overflow": "auto",
+        "position": "static"
+      },
+      {
+        "node": "app",
+        "height": 905,
+        "scrollHeight": 905,
+        "overflow": "hidden",
+        "position": "static"
+      }
+    ],
+    "frameGapsMs": {
+      "median": 10,
+      "p95": 30,
+      "max": 50.10000000000002
+    },
+    "frames": 384,
+    "longTasks": [],
+    "scrollTop": 0,
+    "scrollHeight": 11798,
+    "maxScrollTop": 10941,
+    "filteredCount": 100,
+    "totalFilteredCount": 334,
+    "expectedFilteredCount": 100,
+    "filterMs": 18.69999998807907,
+    "repeat": 1
+  }
+]

docs/development/后台运行日志与压力问题修复.md

@@ -0,0 +1,101 @@
+# 后台运行日志与压力问题修复
+
+## 1. 范围与入口
+
+本次针对 Agent 与任务压测发现的历史记录截断、同步数据库写入阻塞事件循环、长 Trace 树形筛选过慢进行修复，并增加统一运行日志。
+
+主导航的「日志」打开 `/logs`。知识库选择页也有入口；无需成功打开 Vault 即可查看。需要 AI Core 正常提供 HTTP 服务。后台未启动时，页面显示连接错误，不伪造历史结果。
+
+页面提供级别、模块、事件名/错误码/关联 ID 筛选及详情展开。日志列表高度受限，按时间从旧到新显示，默认每 5 秒获取新日志并跟随到底部。向上滚动时暂停跟随，抵达顶部自动加载更早日志并保持阅读位置；可一键回到最新。隐藏页面和卸载后停止轮询。界面最多保留当前浏览窗口的 500 条，继续读取旧日志时移出另一端的记录，后台保留窗口不受影响。所有组件使用已有主题变量、卡片、按钮、下拉框及 `ui-disclosure` 展开样式。
+
+## 2. 日志覆盖
+
+| 模块 | 记录内容 | 定位信息 |
+| --- | --- | --- |
+| vectors | 后台索引状态、向量调用失败、是否使用本地索引回退 | job_id、错误码、异常类型、调用位置、批次数量 |
+| models | 本地模型/远程模型运行诊断、CUDA/CPU、失败与回退 | 模型、设备、状态、错误码、耗时 |
+| agent | 创建运行、模型轮次、工具调用与结果、权限决策、完成/失败/取消 | run_id、Provider、模型、步骤、事件序号、工具名 |
+| tasks | 创建、修改、删除及不存在的删除目标 | task_id、关联 note_id、修改字段名、状态 |
+| providers / chat | 模型请求完成或未完整结束、流式模型错误、对话失败 | Provider、模型、request_id、run_id、错误码 |
+| http / api | HTTP 写操作、失败请求、超过一秒的请求及业务错误 | HTTP 方法、路由模板、状态码、耗时、request_id、资源 ID |
+| system / Python logger | 服务启动与停止，以及应用、服务器和依赖库的 warning/error | 模块、代码位置、异常类型 |
+
+`X-Request-ID` 响应头可与日志中的 request_id 对照。请求上下文通过 ContextVar 传播到后台任务和线程；Agent 内部工具触发的日志还带 run_id。查询日志自身以及正常短轮询不生成 HTTP 操作日志，避免轮询放大日志量。
+
+这里只记录操作诊断，不替代完整 Agent Trace、Token 用量台账和模型诊断表。旧代码 logger 的自由文本可能包含笔记或厂商返回，因此桥接时只记录级别、模块、代码位置和异常类型；需要业务错误码的地方使用结构化接口。
+
+## 3. 存储、容量与隐私
+
+- 位置：`APP_DATA_DIR/logs/operations.sqlite3`，与业务数据库独立，应用重启后可继续查看。
+- 保留最近 20,000 条；每批写入时淘汰更早的记录。不是按天永久归档。
+- 后台线程批量写入，队列最多 4,096 条，一批最多 128 条。队列满时丢弃新诊断记录并计数，绝不阻塞保存或模型推理。
+- 日志页面显示待写入数量、队列溢出和写入失败数量。计数属于当前进程；重启后重置。存储不可读时显示请求失败。
+- 正常退出先停止 Agent 和其他后台工作，再排空日志队列；强制终止进程可能丢失尚未写入的队列内容。
+- 不记录请求/响应正文、系统提示词、工具参数/输出、笔记标题或正文、凭据、原始异常消息、查询字符串。元数据按白名单筛选并限长，Bearer 和 `sk-` 凭据形式额外脱敏。
+- API 仅返回保留窗口内的诊断数据，不提供任意文件读取和日志删除接口。
+
+## 4. 开发接口
+
+```python
+from app.operation_logs import log_event
+
+log_event('vectors', 'embedding.failed', level='ERROR', error=exc,
+          model=model_id, job_id=job_id, error_code='EMBEDDING_UNAVAILABLE',
+          fallback='local_index')
+```
+
+第一个参数是模块名。`source` 是可选的元数据字段，例如 `local` 或 `api`，不要与模块名混淆。事件名应使用开发时定义的短常量。不要把正文、URL、异常消息或用户输入拼入事件名。
+
+`GET /api/logs` 参数：
+
+| 参数 | 规则 |
+| --- | --- |
+| limit | 默认 50，范围 1–200 |
+| before | 上页 next_cursor；正整数，返回更早的 ID |
+| level | 空或 INFO / WARNING / ERROR / CRITICAL |
+| source | 模块名精确匹配，最多 100 字符 |
+| q | 在事件名及脱敏元数据中做字面子串搜索，最多 200 字符 |
+
+返回 `items`、`next_cursor`、`sources`、`pending`、`dropped`、`write_failures`、`retention`。按递增 ID 的倒序分页，插入新日志不改变已经翻到的旧页边界。没有匹配记录时 items 为空、next_cursor 为 null。
+
+## 5. 压力问题的修复方式
+
+Agent Trace 写入由独立异步队列调度到线程，最多合并 64 个写入为一个 SQLite 事务。提交成功后才更新对外可见快照和广播 SSE。创建记录在第一次 await 前占用运行名额，避免并发创建突破 200 个活动运行上限。取消等待正在提交的快照结束，再写终态；服务关闭会等待 Agent 和 Trace 队列。数据库失败不会被当成成功提交。
+
+任务 HTTP 写操作在协程中排队，然后在线程执行；读操作也在线程执行，减少文件锁争用和主事件循环阻塞。SQLite 仍是单写者，不意味着任务写入支持无限并发。
+
+前端读取任务和 Agent 列表的后续 API 页，不再只显示第一页的 50 条。任务筛选和数量基于已获取的完整列表，界面每页显示 100 个任务；运行侧栏每页 50 条。列表刷新失败保留上次结果。列表读取使用现有 offset 协议，不是跨多页的事务快照；其他客户端同时修改数据时可以刷新重新获取。
+
+Trace 搜索先生成事件序号、模型调用 ID、工具调用 ID 的集合，再一次遍历调用树。匹配子节点保留父节点。搜索作用于完整已加载的历史，每页只渲染 200 个事件或树节点。工具统计按工具名和状态汇总，避免在底部再次生成数千个调用卡片。
+
+## 6. 验证方法
+
+后端回归覆盖日志持久化、重启、保留窗口、筛选与游标、正文排除、HTTP 关联 ID，以及后台 Trace 写入同时取消时仍释放等待方。业务回归覆盖 Agent/任务、模型路由、本地模型、用量统计和对话。
+
+```powershell
+cd backend
+.venv/Scripts/python.exe -m pytest tests/test_agent_core.py tests/test_api.py tests/test_operation_logs.py tests/test_model_routing.py tests/test_local_models.py tests/test_usage_overrides.py tests/test_chat_history.py tests/test_chat_context.py -q
+```
+
+运行测试前应将 APP_DATA_DIR、APP_DB_PATH 和 APP_VAULT_PATH 指向临时目录，避免模块导入时初始化真实扩展。pytest 的 fixture 会继续为每个测试隔离数据。
+
+前端执行 `npm --prefix frontend test` 和 `npm --prefix frontend run build`。新增用例验证后续任务/Agent 页完整加载、Trace 全历史搜索与分页、日志筛选/游标、自动跟随与上滚暂停、顶部历史加载、存储异常提示及卸载后停止刷新。
+
+2026-09-06 实测：后端全量 627 项通过；随后增加的 3 项写入失败/取消回归也通过，最后相关接口回归 21 项通过。前端全量 413 项通过，生产构建通过。构建仍提示已有部分 Markdown/Mermaid 依赖块大于 500 kB；后端测试保留已有 Starlette TestClient 弃用提示。纸间时光日志页已用隔离合成数据检查截图，运行中的本机 `/api/logs` 也已确认可返回结果。
+
+离线并发压测与真实本机 HTTP 压测复现方式、前后数据见 [Agent 与任务压测报告](Agent与任务压测报告.md)。压测只使用隔离数据和 Mock Provider，不消耗用户厂商额度。
+
+手工验收建议：
+
+1. 创建、修改和删除一个测试任务，按返回的 task_id 或 X-Request-ID 筛选日志。
+2. 运行含工具调用的 Agent，批准或取消权限请求；按 run_id 检查创建、权限、工具结果和终态。
+3. 在隔离配置中请求未安装的本地模型，查看 models/vectors 的错误码与回退信息，不应出现输入文本。
+4. 重启 AI Core，确认已提交日志仍可查看；退出 Vault 后从入口页打开日志。
+5. 切换默认浅色、深色、纸间时光主题，检查筛选栏、错误徽标和详情展开；窄窗口下应换行且详情不撑出页面。
+# 2026-09-06：大批量本地向量传输修复
+
+全量重建包含 2111 个文本块时，本地模型可能成功完成推理，但整批向量被写成一行 JSON。接收端单行限制为 16 MiB：asyncio 管道拒绝超长行，Windows 线程管道则读到不完整 JSON，最终被包装成 `LOCAL_MODEL_INVALID_RESPONSE`。这类错误不表示 CUDA 显存不足，也不应通过切换 CPU 处理。
+
+Embedding 响应改为每 128 条向量一个 JSON 帧，结束帧携带总数。接收端检查偏移连续性、请求数量和结束标记；缺块时明确失败，不把部分向量写入索引。模型仍只加载一次，推理批大小不变。语音等其他响应保持原协议。
+
+验证方法：在隔离数据目录运行 `tests/test_local_models.py`，分别使用 asyncio 与 Windows 线程管道传输 2111 × 384 的结果，确认旧格式超过 16 MiB，而分帧可完整接收。该文件 7 项测试通过。另使用本机 Bekko 权重、CUDA 对 2111 条合成文本做真实推理：返回 2111 条 384 维向量，设备 `cuda:0`，耗时约 12.55 秒；旧格式 JSON 为 17,886,180 字节。该验收不修改用户笔记、索引或运行配置；用户原始长文档的全库重建仍需在服务加载修复后重试。

docs/development/长文渲染优化与压测报告.md

@@ -77,3 +77,34 @@ backend/.venv/Scripts/python.exe frontend/tests/performance/run-stress.py --url
 下一步需要评估代码块按交互初始化或编辑器级虚拟化，并同时验证输入、选区、搜索定位和折叠；当前不将 12 万字滚动问题标记为完成。
 
 本轮前端 405 项测试通过，涵盖折叠定位、语言标签增量同步、菜单祖先滚动定位和卸载清理。
+
+## 7. CodeMirror 高亮复用实验
+
+在上轮提交 `874e916` 的基础上继续尝试：同一语言及主题的 CodeMirror LanguageSupport 内缓存高亮装饰，代码块离屏销毁后重新创建时，相同正文不再重复分词及构建装饰。缓存最多 32 项、64000 个源字符，超过 16000 字符的单块不缓存，使用 LRU 淘汰；语言支持释放时缓存一并释放。编辑后的内容按新正文计算，不复用旧位置。
+
+回归测试通过统计分词调用验证跨视图复用、正文编辑重新计算和超限淘汰。原有深浅主题切换与编辑测试继续验证显示内容。
+
+12 万字继续测量两次，帧间隔 P95 分别约 100.2 ms、90 ms，二者中位数约 95.1 ms；上一轮约 100 ms。样本重复代码较多，结果仍在明显波动范围内，不能宣称解决滚动卡顿。此优化减少确定可重复的高亮工作，但下一步仍须处理创建 CodeMirror 和布局测量的成本。
+
+- [本轮滚轮原始数据](performance/2026-09-06-scroll-token-cache.json)
+
+## 8. 主题对照与纸间时光 1.8.1 修复
+
+用户补充：同一份 12 万字文档在默认浅色、深色下不卡顿。因此重新进行主题对照，之前将 CodeMirror 作为主要优化方向的判断不足；CPU 采样中的布局及选区测量耗时不能单独证明编辑器是主要原因。
+
+保持相同文档和滚轮脚本，默认浅色、深色各测一次，P95 均约 30 ms。纸间时光 1.8.0 仅禁用整篇 `.ProseMirror` 的虚线 outline 后，两次 P95 约 30.1、30 ms；相比此前约 90–100 ms，构成明确的样式消融证据。主题与 CodeMirror 的交互仍可能影响布局，但不需要先用编辑器虚拟化解决这个差异。
+
+修复将贯穿长文的虚线轮廓改为四条小尺寸渐变平铺背景，保留纸张、缝线、胶带、段落横线和叠纸阴影。独立伪元素虚线 border 的实验反而更慢，已撤回。正式主题版本升为 1.8.1。
+
+| 主题或实验 | 次数 | 帧间隔 P95（ms） |
+| --- | ---: | --- |
+| 默认浅色 | 1 | 30 |
+| 默认深色 | 1 | 30 |
+| 1.8.0 仅禁用整篇 outline | 2 | 30.1、30 |
+| 1.8.1 平铺缝线 | 3 | 30.1、30、30.1 |
+
+1.8.1 三次测试的帧间隔中位数均为 10 ms，全部折叠后的 scrollTop 均为 0，光标位置均为 1。已检查视口截图，手账装饰保留。这里的结果说明本轮样本与环境下，纸间时光恢复到接近默认主题的滚动表现，不代表所有设备、所有复杂文档均无长任务。
+
+已安装主题保存在本地，不会自动被新版资源覆盖。刷新前端后，到“主题 → 社区主题 → 纸间时光”点击“更新”，确认版本 1.8.1 再进行手动复测。
+
+- [主题对比原始数据](performance/2026-09-06-scroll-theme-comparison.json)

frontend/src/assets/themes/paper-moments.theme

@@ -1,6 +1,6 @@
 theme_id: paper-moments
 name: 纸间时光 · Paper Moments
-version: 1.8.0
+version: 1.8.1
 author: NotesAgent
 description: 奶油纸张、手帐虚线与粉蓝胶带，把每天的灵感好好收藏。
 min_app_version: 0.2.0
@@ -155,9 +155,13 @@ license: MIT
   padding: 44px 40px 60px 52px;
   border: 1px solid #685949;
   border-radius: 8px 16px 8px 8px;
-  outline: 1px dashed #c5b9a7;
-  outline-offset: -10px;
-  background: linear-gradient(90deg, transparent 32px, #e9cfc7 32px 34px, transparent 34px), #fffef8;
+  /* Small repeated tiles retain the stitching without a document-height dashed outline. */
+  background:
+    linear-gradient(#c5b9a7 50%, transparent 50%) 10px 0 / 1px 8px repeat-y,
+    linear-gradient(#c5b9a7 50%, transparent 50%) calc(100% - 10px) 0 / 1px 8px repeat-y,
+    linear-gradient(90deg, #c5b9a7 50%, transparent 50%) 0 10px / 8px 1px repeat-x,
+    linear-gradient(90deg, #c5b9a7 50%, transparent 50%) 0 calc(100% - 10px) / 8px 1px repeat-x,
+    linear-gradient(90deg, transparent 32px, #e9cfc7 32px 34px, transparent 34px), #fffef8;
   box-shadow: 6px 6px 0 #d8e6e2, 12px 12px 0 #f0d8cf;
 }
 [data-theme="paper-moments"] .milkdown-host .ProseMirror::before {

frontend/src/components/common/AppShell.vue

@@ -29,8 +29,9 @@ const router = useRouter()
 let statusTimer: ReturnType<typeof setTimeout> | undefined
 let disposed = false
 async function pollIndex() {
-  try { settingsStore.indexStatus = await getIndexStatus() } catch { /* retain last status; retry */ }
-  if (!disposed) statusTimer = setTimeout(pollIndex, 5000)
+  try { const status = await getIndexStatus(); if (!disposed) settingsStore.indexStatus = status } catch { /* retain last status; retry */ }
+  const busy = settingsStore.indexStatus.status === 'indexing' || settingsStore.indexStatus.active_searches
+  if (!disposed) statusTimer = setTimeout(pollIndex, busy || route.name === 'settings' || route.name === 'search' ? 1000 : 5000)
 }
 onMounted(() => { void settingsStore.loadDiagnostics(); void pollIndex() })
 onUnmounted(() => { disposed = true; clearTimeout(statusTimer) })

frontend/src/components/common/PrimarySidebar.vue

@@ -1,7 +1,7 @@
 <script setup lang="ts">
 import { useRoute, useRouter } from 'vue-router'
 import { computed, ref } from 'vue'
-import { ArrowLeftBold, ArrowRightBold, Brush, ChatDotRound, CircleCheck, Connection, Cpu, FolderOpened, Lightning, Monitor, Search, Setting } from '@element-plus/icons-vue'
+import { ArrowLeftBold, ArrowRightBold, Brush, ChatDotRound, CircleCheck, Connection, Cpu, Document, FolderOpened, Lightning, Monitor, Search, Setting } from '@element-plus/icons-vue'
 import AppIcon from './AppIcon.vue'
 import { t } from '@/i18n'
 
@@ -20,6 +20,7 @@ const navItems = computed(() => [
   { name: 'plugins', icon: Connection, label: 'Plugin' },
   { name: 'mcp-servers', icon: Monitor, label: 'MCP' },
   { name: 'themes', icon: Brush, label: t('主题', 'Themes') },
+  { name: 'logs', icon: Document, label: t('日志', 'Logs') },
   { name: 'settings', icon: Setting, label: t('设置', 'Settings') },
 ])
 

frontend/src/components/common/StatusBar.vue

@@ -38,11 +38,7 @@ const saveStatusColor = computed(() => {
   return map[editorStore.saveStatus] || 'var(--color-text-tertiary)'
 })
 
-const indexStatusText = computed(() => {
-  const s = settingsStore.indexStatus.status
-  if (s === 'idle' && settingsStore.indexStatus.vector_refresh_required) return t('全文可用 · 向量待重建', 'Full text ready · vectors need rebuilding')
-  return s === 'unknown' ? t('索引状态未获取', 'Index status unavailable') : s === 'idle' ? t('索引就绪', 'Index ready') : s === 'indexing' ? t('后台计算索引', 'Indexing in background') : t('索引错误', 'Index error')
-})
+const indexStatusText = computed(() => settingsStore.indexStatusLabel)
 
 const aiCoreStatusText = computed(() => {
   const map: Record<string, string> = {
@@ -78,7 +74,7 @@ const showEditorInfo = computed(() => route.name === 'workspace')
         {{ saveStatusText }}
       </span>
       <span class="status-item" :title="indexStatusText">
-        <span class="status-dot" :style="{ background: settingsStore.indexStatus.status === 'error' ? 'var(--color-error)' : settingsStore.indexStatus.status === 'indexing' ? 'var(--color-warning)' : 'var(--color-success)' }" />
+        <span class="status-dot" :style="{ background: settingsStore.indexStatus.status === 'error' ? 'var(--color-error)' : settingsStore.indexStatus.status === 'unknown' ? 'var(--color-text-tertiary)' : settingsStore.indexStatus.status === 'indexing' || settingsStore.indexStatus.vector_refresh_required || settingsStore.indexStatus.active_searches ? 'var(--color-warning)' : 'var(--color-success)' }" />
         {{ indexStatusText }}
       </span>
       <span class="status-item" :style="{ color: aiCoreColor }">

frontend/src/contracts/index.ts

@@ -507,6 +507,11 @@ export interface ThemeConfig {
 // ============ Index ============
 
 export interface IndexStatus {
+  running_jobs?: number
+  active_searches?: number
+  completed_searches?: number
+  failed_searches?: number
+  cancelled_searches?: number
   vector_refresh_required?: boolean
   status: 'unknown' | 'idle' | 'indexing' | 'error'
   pending_jobs: number
@@ -801,6 +806,11 @@ export interface ApiTask {
 }
 
 export interface ApiIndexStatus {
+  running_jobs?: number
+  active_searches?: number
+  completed_searches?: number
+  failed_searches?: number
+  cancelled_searches?: number
   vector_refresh_required?: boolean
   total_notes: number
   total_blocks: number

frontend/src/features/agent/RunListPanel.vue

@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { onMounted, ref } from 'vue'
+import { computed, watch, onMounted, ref } from 'vue'
 import { useRouter } from 'vue-router'
 import { useAgentStore } from '@/stores/agent'
 import { localeTag, t } from '@/i18n'
@@ -8,6 +8,10 @@ import { runStatusLabel } from './labels'
 const agentStore = useAgentStore()
 const router = useRouter()
 const error = ref('')
+const page = ref(1)
+const pages = computed(() => Math.max(1, Math.ceil(agentStore.sortedRuns.length / 50)))
+const visibleRuns = computed(() => agentStore.sortedRuns.slice((page.value - 1) * 50, page.value * 50))
+watch(pages, count => { page.value = Math.min(page.value, count) })
 
 onMounted(async () => {
   try { await agentStore.loadRuns() } catch (reason) { error.value = reason instanceof Error ? reason.message : t('运行记录加载失败', 'Failed to load runs') }
@@ -20,8 +24,9 @@ function selectRun(runId: string) { void router.push({ name: 'agent', params: {
   <div class="sidebar-panel">
     <button class="button-primary new-button" @click="router.push({ name: 'agent' })">＋ {{ t('新建运行', 'New run') }}</button>
     <p v-if="error" class="subtle error-text">{{ error }}</p>
+    <div v-if="pages > 1" class="inline-actions"><button class="button-secondary" :disabled="page === 1" @click="page--">{{ t('上一页', 'Previous') }}</button><span>{{ page }} / {{ pages }}</span><button class="button-secondary" :disabled="page === pages" @click="page++">{{ t('下一页', 'Next') }}</button></div>
     <div class="sidebar-list">
-      <button v-for="run in agentStore.sortedRuns" :key="run.run_id" class="sidebar-list-item run-item"
+      <button v-for="run in visibleRuns" :key="run.run_id" class="sidebar-list-item run-item"
         :class="{ active: agentStore.activeRunId === run.run_id }" @click="selectRun(run.run_id)">
         <span class="badge" :class="{ success: run.status === 'completed', error: run.status === 'failed', warning: run.status === 'waiting_permission' }">{{ runStatusLabel(run.status) }}</span>
         <strong>{{ run.run_id.slice(0, 12) }}</strong><small>{{ run.started_at ? new Date(run.started_at).toLocaleString(localeTag()) : t('等待开始', 'Waiting to start') }}</small>

frontend/src/features/agent/TraceTimeline.spec.ts

@@ -41,6 +41,17 @@ async function switchToTree(wrapper: ReturnType<typeof mountTree>) {
 }
 
 describe('TraceTimeline 树形视图', () => {
+  it('bounds rendered events while searching the complete history', async () => {
+    const events = Array.from({ length: 1000 }, (_, i) => event('TextDelta', { text: `message-${i}` }))
+    const wrapper = mountTree(events)
+    expect(wrapper.findAll('.event-card')).toHaveLength(200)
+    await wrapper.findAll('button').find(button => button.text() === '下一页')!.trigger('click')
+    expect(wrapper.findAll('.event-card')).toHaveLength(200)
+    await wrapper.get('input').setValue('message-999')
+    expect(wrapper.findAll('.event-card')).toHaveLength(1)
+    expect(wrapper.text()).toContain('message-999')
+    wrapper.unmount()
+  })
   it('filters errors while retaining tree ancestors and final tool data', async () => {
     const events = sampleEvents()
     const result = events.find(item => item.event === 'ToolResult')!

frontend/src/features/agent/TraceTimeline.vue

@@ -1,6 +1,6 @@
 <script setup lang="ts">
 import { localeTag, t } from '@/i18n'
-import { computed, ref } from 'vue'
+import { computed, ref, watch } from 'vue'
 import type { TraceNode, AgentEvent } from '@/contracts'
 import { buildTraceNodes, getToolCallsFromEvents, getTotalDuration } from '@/services/traceService'
 import { eventLabel, localizeDetails } from './labels'
@@ -37,9 +37,12 @@ const filteredEvents = computed(() => {
 })
 const filteredTree = computed(() => {
   if (!filtering.value) return traceNodes.value
-  const matches = (node: TraceNode) => filteredEvents.value.some(event => event.sequence === node.sequence
-    || (node.type === 'tool_call' && node.data.tool_call_id != null && node.data.tool_call_id === event.data.tool_call_id)
-    || (node.type === 'model_call' && node.data.model_call_id != null && node.data.model_call_id === event.data.model_call_id))
+  const sequences = new Set(filteredEvents.value.map(event => event.sequence))
+  const tools = new Set<unknown>(filteredEvents.value.map(event => event.data.tool_call_id).filter(id => id != null))
+  const models = new Set<unknown>(filteredEvents.value.map(event => event.data.model_call_id).filter(id => id != null))
+  const matches = (node: TraceNode) => sequences.has(node.sequence)
+    || (node.type === 'tool_call' && tools.has(node.data.tool_call_id))
+    || (node.type === 'model_call' && models.has(node.data.model_call_id))
   const prune = (nodes: TraceNode[]): TraceNode[] => nodes.flatMap(node => {
     const children = prune(node.children)
     return matches(node) || children.length ? [{ ...node, children }] : []
@@ -50,6 +53,17 @@ function resetFilters() { query.value = ''; eventType.value = ''; toolName.value
 
 const traceNodes = computed(() => buildTraceNodes(props.events))
 const toolCalls = computed(() => getToolCallsFromEvents(props.events))
+const toolSummary = computed(() => {
+  const groups = new Map<string, { key: string; name: string; status: string; count: number; duration_ms: number }>()
+  for (const call of toolCalls.value) {
+    const key = `${call.name}:${call.status}`
+    const group = groups.get(key) ?? { key, name: call.name, status: call.status, count: 0, duration_ms: 0 }
+    group.count++
+    group.duration_ms += call.duration_ms ?? 0
+    groups.set(key, group)
+  }
+  return [...groups.values()]
+})
 const totalDuration = computed(() => getTotalDuration(props.events))
 
 const summaryStats = computed(() => {
@@ -153,6 +167,12 @@ function flatNodes(nodes: TraceNode[], depth = 0): Array<{ node: TraceNode; dept
 }
 
 const flatTrace = computed(() => flatNodes(filteredTree.value))
+const page = ref(1)
+const pageCount = computed(() => Math.max(1, Math.ceil((viewMode.value === 'tree' ? flatTrace.value.length : filteredEvents.value.length) / 200)))
+const visibleEvents = computed(() => filteredEvents.value.slice((page.value - 1) * 200, page.value * 200))
+const visibleTrace = computed(() => flatTrace.value.slice((page.value - 1) * 200, page.value * 200))
+watch([query, eventType, toolName, errorsOnly, viewMode], () => { page.value = 1 })
+watch(pageCount, count => { page.value = Math.min(page.value, count) })
 </script>
 
 <template>
@@ -199,11 +219,12 @@ const flatTrace = computed(() => flatNodes(filteredTree.value))
       <button v-if="filtering" class="button-secondary" @click="resetFilters">清除筛选</button>
       <span aria-live="polite">{{ filteredEvents.length }} / {{ events.length }} 事件</span>
     </div>
+    <nav v-if="pageCount > 1" class="inline-actions"><button class="button-secondary" :disabled="page === 1" @click="page--">{{ t('上一页', 'Previous') }}</button><span>{{ page }} / {{ pageCount }}</span><button class="button-secondary" :disabled="page === pageCount" @click="page++">{{ t('下一页', 'Next') }}</button></nav>
     <p v-if="filtering && !filteredEvents.length" class="subtle" role="status">没有匹配的事件</p>
     <div v-if="viewMode === 'timeline'" class="timeline-view">
       <div class="timeline">
         <article
-          v-for="event in filteredEvents"
+          v-for="event in visibleEvents"
           :key="event.sequence"
           class="event-card"
           :class="{ expanded: isDetailOpen(`event-${event.sequence}`) }"
@@ -255,7 +276,7 @@ const flatTrace = computed(() => flatNodes(filteredTree.value))
     </div>
 
     <div v-else class="tree-view">
-      <div v-for="item in flatTrace" :key="item.node.id" class="tree-node" :style="{ paddingLeft: `${item.depth * 24 + 8}px` }">
+      <div v-for="item in visibleTrace" :key="item.node.id" class="tree-node" :style="{ paddingLeft: `${item.depth * 24 + 8}px` }">
         <div
           class="node-row"
           :class="[getNodeStatusClass(item.node), { 'detail-open': isDetailOpen(item.node.id) }]"
@@ -303,9 +324,10 @@ const flatTrace = computed(() => flatNodes(filteredTree.value))
     <div v-if="!filtering && toolCalls.length > 0 && viewMode === 'timeline'" class="tool-calls-summary panel">
       <h3 class="panel-title">工具调用统计</h3>
       <div class="tool-call-list">
-        <div v-for="call in toolCalls" :key="call.tool_call_id" class="tool-call-item" :class="call.status">
+        <div v-for="call in toolSummary" :key="call.key" class="tool-call-item" :class="call.status">
           <span class="tool-status-dot"></span>
           <code class="tool-name">{{ call.name }}</code>
+          <span>{{ call.count }} {{ t('次', 'calls') }}</span>
           <span v-if="call.duration_ms != null" class="tool-duration">
             {{ formatDuration(call.duration_ms) }}
           </span>

frontend/src/features/editor/VisualMarkdownEditor.spec.ts

@@ -55,6 +55,22 @@ afterEach(() => {
 })
 
 describe('VisualMarkdownEditor formatting toolbars', () => {
+  it('opens a rendered Markdown link on Ctrl click without changing its source', async () => {
+    const wrapper = mount(VisualMarkdownEditor, {
+      props: { initialContent: '[**文档**](https://example.com/docs)' }, attachTo: document.body,
+    })
+    mounted.push(wrapper)
+    const editor = await waitForEditor(wrapper)
+    const before = editor.action(getMarkdown())
+    const open = vi.spyOn(window, 'open').mockReturnValue(null)
+    try {
+      const link = wrapper.get('.ProseMirror a')
+      await link.trigger('click', { ctrlKey: true, button: 0 })
+      expect(open).toHaveBeenCalledWith('https://example.com/docs', '_blank', 'noopener,noreferrer')
+      expect(editor.action(getMarkdown())).toBe(before)
+    } finally { open.mockRestore() }
+  })
+
   it('applies syntax and renderer preferences when opening the visual editor', async () => {
     const preferences = useMarkdownPreferencesStore()
     preferences.preferences.heading = 'setext'

frontend/src/features/editor/VisualMarkdownEditor.vue

@@ -16,6 +16,7 @@ import { shikiEditorTheme, shikiLanguages, renderCodeLanguage } from './shikiCod
 import './language-icons.css'
 import { installLanguagePickerPopover } from './languagePickerPopover'
 import { installCodeBlockLabels } from './codeBlockLabels'
+import { installLinkNavigation } from './linkNavigation'
 import { createMermaidPreview } from './mermaidPreview'
 import { splitNoteMetadata, updateMetadataTags } from './noteMetadata'
 import { getMarkdown, $remark, $prose } from '@milkdown/kit/utils'
@@ -80,6 +81,7 @@ const fontSizeInput = ref(16)
 let crepe: Crepe | null = null
 let disposeLanguagePicker: (() => void) | undefined
 let disposeCodeLabels: (() => void) | undefined
+let disposeLinkNavigation: (() => void) | undefined
 let disposeCommands: (() => void) | undefined
 let disposed = false
 
@@ -392,6 +394,7 @@ onMounted(async () => {
   await crepe.create()
   if (editorRoot.value) disposeLanguagePicker = installLanguagePickerPopover(editorRoot.value)
   if (editorRoot.value) disposeCodeLabels = installCodeBlockLabels(editorRoot.value)
+  if (editorRoot.value) disposeLinkNavigation = installLinkNavigation(editorRoot.value)
   applyProofingPreferences()
   loading.value = false
   if (!disposed) installCommands()
@@ -412,7 +415,7 @@ watch(() => editorStore.headingRequest, request => {
   })
 })
 
-onBeforeUnmount(() => { disposed = true; disposeCommands?.(); diagramPreviews.clear(); disposeCodeLabels?.(); disposeLanguagePicker?.(); void crepe?.destroy() })
+onBeforeUnmount(() => { disposed = true; disposeCommands?.(); diagramPreviews.clear(); disposeLinkNavigation?.(); disposeCodeLabels?.(); disposeLanguagePicker?.(); void crepe?.destroy() })
 
 defineExpose({ getEditor: () => crepe?.editor })
 </script>

frontend/src/features/editor/linkNavigation.spec.ts

@@ -0,0 +1,33 @@
+// @vitest-environment happy-dom
+import { afterEach, expect, it, vi } from 'vitest'
+import { installLinkNavigation } from './linkNavigation'
+
+afterEach(() => { document.body.innerHTML = ''; vi.restoreAllMocks() })
+
+it('opens nested link content with Ctrl/Command click but leaves ordinary editing alone', () => {
+  const root = document.createElement('div')
+  root.innerHTML = '<div class="ProseMirror"><a href="https://example.com/docs"><strong>Docs</strong></a></div>'
+  document.body.append(root)
+  const dispose = installLinkNavigation(root)
+  const open = vi.spyOn(window, 'open').mockReturnValue(null)
+  const target = root.querySelector('strong')!
+  const click = (options: MouseEventInit) => {
+    const event = new MouseEvent('click', { bubbles: true, cancelable: true, ...options })
+    target.dispatchEvent(event)
+    return event
+  }
+  expect(click({}).defaultPrevented).toBe(false)
+  click({ ctrlKey: true, button: 2 })
+  expect(open).not.toHaveBeenCalled()
+  expect(click({ ctrlKey: true }).defaultPrevented).toBe(true)
+  expect(open).toHaveBeenLastCalledWith('https://example.com/docs', '_blank', 'noopener,noreferrer')
+  click({ metaKey: true })
+  expect(open).toHaveBeenCalledTimes(2)
+  root.querySelector('a')!.href = 'javascript:alert(1)'
+  expect(click({ ctrlKey: true }).defaultPrevented).toBe(true)
+  expect(open).toHaveBeenCalledTimes(2)
+  dispose()
+  root.querySelector('a')!.href = 'https://example.com'
+  expect(click({ ctrlKey: true }).defaultPrevented).toBe(false)
+  expect(open).toHaveBeenCalledTimes(2)
+})

frontend/src/features/editor/linkNavigation.ts

@@ -0,0 +1,20 @@
+/** Editable anchors need explicit navigation; plain clicks keep editing the link. */
+export function installLinkNavigation(root: HTMLElement): () => void {
+  const navigate = (event: MouseEvent) => {
+    if (event.button !== 0 || !(event.ctrlKey || event.metaKey) || event.altKey) return
+    const target = event.target instanceof Element ? event.target : (event.target as Node | null)?.parentElement
+    const link = target?.closest<HTMLAnchorElement>('.ProseMirror a[href]')
+    if (!link || !root.contains(link)) return
+    const href = link.getAttribute('href')?.trim()
+    if (!href) return
+    // Consume modified clicks before Milkdown's link editor or native navigation.
+    event.preventDefault()
+    event.stopPropagation()
+    let url: URL
+    try { url = new URL(href, document.baseURI) } catch { return }
+    if (!['http:', 'https:', 'mailto:', 'tel:'].includes(url.protocol)) return
+    window.open(url.href, '_blank', 'noopener,noreferrer')
+  }
+  root.addEventListener('click', navigate, true)
+  return () => root.removeEventListener('click', navigate, true)
+}

frontend/src/features/editor/shikiCodeMirror.spec.ts

@@ -1,13 +1,37 @@
 // @vitest-environment happy-dom
-import { afterEach, expect, it } from 'vitest'
+import { afterEach, expect, it, vi } from 'vitest'
 import { Compartment } from '@codemirror/state'
 import { bundledLanguagesInfo } from 'shiki/langs'
 import { EditorView } from '@codemirror/view'
 import { shikiLanguage, shikiLanguages } from './shikiCodeMirror'
 import { getCodeTokenizer } from '@/utils/markdown'
+import * as markdown from '@/utils/markdown'
 
 const editors: EditorView[] = []
-afterEach(() => { editors.splice(0).forEach(view => view.destroy()) })
+afterEach(() => { editors.splice(0).forEach(view => view.destroy()); vi.restoreAllMocks() })
+
+it('reuses highlighting across recreated views and bounds retained entries', async () => {
+  const tokenize = vi.fn(await getCodeTokenizer('github-light', 'javascript'))
+  vi.spyOn(markdown, 'getCodeTokenizer').mockResolvedValue(tokenize)
+  const support = await shikiLanguage('javascript', 'github-light')
+  const create = (doc: string) => {
+    const view = new EditorView({ doc, extensions: [support] })
+    editors.push(view)
+    return view
+  }
+  const source = 'const answer = 42'
+  create(source)
+  const recreated = create(source)
+  expect(tokenize).toHaveBeenCalledTimes(1)
+  expect(recreated.dom.textContent).toContain(source)
+  recreated.dispatch({ changes: { from: 0, to: source.length, insert: 'let changed = 1' } })
+  expect(tokenize).toHaveBeenCalledTimes(2)
+  expect(recreated.dom.textContent).toContain('let changed = 1')
+  for (let i = 0; i < 33; i++) create(`const value = ${i}`)
+  const before = tokenize.mock.calls.length
+  create(source)
+  expect(tokenize).toHaveBeenCalledTimes(before + 1)
+})
 
 it.each(['github-light', 'github-dark'] as const)('uses Shiki %s tokens and updates editable content', async theme => {
   const support = await shikiLanguage('python', theme)

frontend/src/features/editor/shikiCodeMirror.ts

@@ -7,6 +7,10 @@ type CodeTheme = 'github-light' | 'github-dark'
 
 export async function shikiLanguage(language: string, theme: CodeTheme): Promise<LanguageSupport> {
   const tokenize = await getCodeTokenizer(theme, language)
+  // Milkdown recreates off-screen CodeMirror views. Reuse immutable ranges for
+  // identical code within this language/theme, with a bounded retention budget.
+  const cache = new Map<string, DecorationSet>()
+  let cachedCharacters = 0
   const highlights = ViewPlugin.fromClass(class {
     decorations: DecorationSet
 
@@ -17,7 +21,13 @@ export async function shikiLanguage(language: string, theme: CodeTheme): Promise
     }
 
     highlight(view: EditorView): DecorationSet {
-      const tokens = tokenize(view.state.doc.toString(), language)
+      const source = view.state.doc.toString()
+      const cached = cache.get(source)
+      if (cached) {
+        cache.delete(source); cache.set(source, cached)
+        return cached
+      }
+      const tokens = tokenize(source, language)
       const ranges = tokens.flatMap((line, index) => {
         let offset = view.state.doc.line(index + 1).from
         return line.flatMap(token => {
@@ -31,7 +41,15 @@ export async function shikiLanguage(language: string, theme: CodeTheme): Promise
           }).range(from, offset)]
         })
       })
-      return Decoration.set(ranges)
+      const decorations = Decoration.set(ranges)
+      if (source.length <= 16000) {
+        cache.set(source, decorations); cachedCharacters += source.length
+        while (cache.size > 32 || cachedCharacters > 64000) {
+          const oldest = cache.keys().next().value!
+          cachedCharacters -= oldest.length; cache.delete(oldest)
+        }
+      }
+      return decorations
     }
   }, { decorations: value => value.decorations })
 

frontend/src/features/logs/LogsView.spec.ts

@@ -0,0 +1,65 @@
+// @vitest-environment happy-dom
+import { mount, flushPromises } from '@vue/test-utils'
+import { afterEach, expect, it, vi } from 'vitest'
+import LogsView from './LogsView.vue'
+const get = vi.hoisted(() => vi.fn())
+vi.mock('@/services/apiClient', () => ({ default: { get } }))
+afterEach(() => { vi.useRealTimers(); vi.clearAllMocks() })
+const page = (id: number, next: number | null) => ({ items: [{ id, timestamp: '2026-09-06T01:00:00Z', level: 'ERROR', source: 'vectors', event: 'embedding.failed', details: { error_code: 'LOCAL_CUDA_OOM' } }], next_cursor: next, sources: ['vectors'], pending: 0, dropped: 0, write_failures: 0, retention: 20000 })
+it('loads older logs without paging away and applies filters', async () => {
+  get.mockResolvedValueOnce(page(4, 4)).mockResolvedValueOnce(page(2, null)).mockResolvedValue(page(8, null))
+  const wrapper = mount(LogsView)
+  await flushPromises()
+  expect(wrapper.get('details').classes()).toContain('ui-disclosure')
+  await wrapper.findAll('button').find(button => button.text() === '向上滚动加载更早日志')!.trigger('click')
+  await flushPromises()
+  expect(get.mock.lastCall![1].params.before).toBe(4)
+  expect(wrapper.findAll('details').map(row => row.attributes('data-log-id'))).toEqual(['2', '4'])
+  await wrapper.get('input[maxlength="200"]').setValue('LOCAL_CUDA_OOM')
+  await wrapper.get('form').trigger('submit')
+  await flushPromises()
+  expect(get.mock.lastCall![1].params).toMatchObject({ before: undefined, q: 'LOCAL_CUDA_OOM' })
+  wrapper.unmount()
+})
+it('follows at the bottom, pauses while reading, and loads history on scroll', async () => {
+  vi.useFakeTimers()
+  get.mockResolvedValue(page(10, 10))
+  const wrapper = mount(LogsView)
+  await flushPromises()
+  const viewport = wrapper.get('.log-list').element as HTMLElement
+  Object.defineProperty(viewport, 'scrollHeight', { configurable: true, value: 1000 })
+  Object.defineProperty(viewport, 'clientHeight', { configurable: true, value: 200 })
+  viewport.scrollTop = 800
+  await wrapper.get('.log-list').trigger('scroll')
+  get.mockResolvedValueOnce({ ...page(11, 10), items: [...page(11, 10).items, ...page(10, 10).items] })
+  await vi.advanceTimersByTimeAsync(5000)
+  await flushPromises()
+  expect(wrapper.findAll('details').map(row => row.attributes('data-log-id'))).toEqual(['10', '11'])
+  expect(viewport.scrollTop).toBe(1000)
+  viewport.scrollTop = 400
+  await wrapper.get('.log-list').trigger('scroll')
+  const calls = get.mock.calls.length
+  await vi.advanceTimersByTimeAsync(5000)
+  expect(get).toHaveBeenCalledTimes(calls)
+  get.mockResolvedValueOnce(page(9, null))
+  viewport.scrollTop = 0
+  await wrapper.get('.log-list').trigger('scroll')
+  await flushPromises()
+  expect(get.mock.lastCall![1].params.before).toBe(10)
+  expect(wrapper.findAll('details').map(row => row.attributes('data-log-id'))).toEqual(['9', '10', '11'])
+  wrapper.unmount()
+})
+it('surfaces storage loss and transport errors without polling after unmount', async () => {
+  vi.useFakeTimers()
+  get.mockResolvedValueOnce({ ...page(1, null), dropped: 3, write_failures: 1 }).mockRejectedValue(new Error('offline'))
+  const wrapper = mount(LogsView)
+  await flushPromises()
+  expect(wrapper.get('[role="alert"]').text()).toContain('3')
+  await wrapper.get('input[type="checkbox"]').setValue(true)
+  await vi.advanceTimersByTimeAsync(5000)
+  expect(wrapper.text()).toContain('offline')
+  wrapper.unmount()
+  const calls = get.mock.calls.length
+  await vi.advanceTimersByTimeAsync(10000)
+  expect(get).toHaveBeenCalledTimes(calls)
+})

frontend/src/features/logs/LogsView.vue

@@ -0,0 +1,117 @@
+<script setup lang="ts">
+import { nextTick, onMounted, onUnmounted, ref } from 'vue'
+import apiClient from '@/services/apiClient'
+import { t } from '@/i18n'
+
+interface LogEntry { id: number; timestamp: string; level: string; source: string; event: string; details: Record<string, unknown> }
+interface LogPage { items: LogEntry[]; next_cursor: number | null; sources: string[]; pending: number; dropped: number; write_failures: number; retention: number }
+const page = ref<LogPage>({ items: [], next_cursor: null, sources: [], pending: 0, dropped: 0, write_failures: 0, retention: 20000 })
+const level = ref(''), source = ref(''), query = ref(''), error = ref('')
+const loading = ref(false), live = ref(true), following = ref(true)
+const scroller = ref<HTMLElement>()
+const atLatest = ref(true)
+const MAX_VISIBLE = 500
+let applied = { level: '', source: '', q: '' }
+let revision = 0
+let timer: ReturnType<typeof setInterval> | undefined
+let adjusting = false
+async function load(reset = false, older = false) {
+  if (older && (loading.value || !page.value.next_cursor)) return
+  if (reset) applied = { level: level.value, source: source.value, q: query.value.trim() }
+  const version = ++revision
+  const viewport = scroller.value
+  const oldHeight = viewport?.scrollHeight ?? 0
+  const oldTop = viewport?.scrollTop ?? 0
+  // Preserve a visible row when adding history and trimming the opposite edge.
+  const anchor = older && viewport ? [...viewport.querySelectorAll<HTMLElement>('[data-log-id]')].find(row => row.getBoundingClientRect().bottom > viewport.getBoundingClientRect().top) : undefined
+  const anchorTop = anchor?.getBoundingClientRect().top
+  const anchorId = anchor?.dataset.logId
+  loading.value = true
+  try {
+    const result = await apiClient.get<LogPage>('/api/logs', { params: { limit: 50, before: older ? page.value.next_cursor ?? undefined : undefined, ...applied } })
+    if (version !== revision) return
+    // If the reader scrolled away during a refresh, leave their view untouched.
+    if (!reset && !older && !following.value) return
+    const previous = page.value.items
+    const overlaps = result.items.some(item => previous.some(old => old.id === item.id))
+    const combined = older || (!reset && overlaps) ? [...previous, ...result.items] : result.items
+    const all = [...new Map(combined.map(item => [item.id, item])).values()].sort((a, b) => a.id - b.id)
+    const trimmed = all.length > MAX_VISIBLE
+    const items = older ? all.slice(0, MAX_VISIBLE) : all.slice(-MAX_VISIBLE)
+    let cursor = older || reset || !overlaps ? result.next_cursor : page.value.next_cursor
+    if (!older && trimmed) cursor = items[0]?.id ?? null
+    if (older && trimmed) atLatest.value = false
+    if (!older) atLatest.value = true
+    adjusting = true
+    page.value = { ...result, items, next_cursor: cursor }
+    error.value = ''
+    await nextTick()
+    if (version !== revision) return
+    if (viewport) {
+      if (older) {
+        const retained = anchorId ? viewport.querySelector<HTMLElement>(`[data-log-id="${anchorId}"]`) : undefined
+        viewport.scrollTop = retained && anchorTop != null ? oldTop + retained.getBoundingClientRect().top - anchorTop : oldTop + viewport.scrollHeight - oldHeight
+      } else if (reset || following.value) {
+        viewport.scrollTop = viewport.scrollHeight
+        following.value = true
+      }
+    }
+  } catch (reason) {
+    if (version === revision) error.value = reason instanceof Error ? reason.message : t('日志加载失败', 'Failed to load logs')
+  } finally { if (version === revision) { loading.value = false; adjusting = false } }
+}
+function onScroll() {
+  const viewport = scroller.value
+  if (!viewport || adjusting) return
+  following.value = atLatest.value && viewport.scrollHeight - viewport.clientHeight - viewport.scrollTop < 24
+  if (viewport.scrollTop < 80 && viewport.scrollHeight > viewport.clientHeight && !error.value) void load(false, true)
+}
+onMounted(() => {
+  void load(true)
+  timer = setInterval(() => { if (live.value && following.value && !loading.value && !document.hidden) void load() }, 5000)
+})
+onUnmounted(() => { revision++; clearInterval(timer) })
+</script>
+
+<template>
+  <section class="feature-page logs-page">
+    <header class="feature-header"><div><h1>{{ t('运行日志', 'Operation logs') }}</h1><p>{{ t('集中查看向量模型、智能体、任务与后台操作。', 'Inspect models, agents, tasks and background operations.') }}</p></div><button class="button-secondary" :disabled="loading" @click="load(true)">{{ t('刷新', 'Refresh') }}</button></header>
+    <form class="panel log-filters" @submit.prevent="load(true)">
+      <label class="field">{{ t('级别', 'Level') }}<select v-model="level" class="select"><option value="">{{ t('全部', 'All') }}</option><option>INFO</option><option>WARNING</option><option>ERROR</option><option>CRITICAL</option></select></label>
+      <label class="field">{{ t('模块', 'Module') }}<select v-model="source" class="select"><option value="">{{ t('全部', 'All') }}</option><option v-for="item in page.sources" :key="item">{{ item }}</option></select></label>
+      <label class="field log-search">{{ t('事件、错误码或关联 ID', 'Event, error code or correlation ID') }}<input v-model="query" class="input" maxlength="200" /></label>
+      <button class="button-primary" :disabled="loading">{{ t('筛选', 'Filter') }}</button>
+      <label><input v-model="live" type="checkbox" /> {{ t('自动跟随新日志', 'Follow new logs') }}</label>
+    </form>
+    <p class="subtle">{{ t('本地保留最近', 'Locally retains the latest') }} {{ page.retention.toLocaleString() }} {{ t('条日志；不记录正文、提示词、工具参数及密钥。', 'events; excludes content, prompts, tool arguments and credentials.') }}</p>
+    <p v-if="page.dropped || page.write_failures" class="error-banner" role="alert">{{ t('日志存储不完整：队列溢出', 'Incomplete logging: queue overflow') }} {{ page.dropped }} · {{ t('写入失败', 'Write failures') }} {{ page.write_failures }}</p>
+    <p v-if="error" class="error-banner" role="alert">{{ error }}</p>
+    <div class="inline-actions log-controls"><span class="subtle" role="status">{{ live && following ? t('正在跟随最新日志', 'Following latest logs') : t('已暂停跟随，可自由查看历史', 'Following paused; browse history freely') }}</span><button class="button-secondary" :disabled="loading" @click="live = true; load(true)">{{ t('回到最新', 'Back to latest') }}</button><span class="subtle">{{ t('待写入', 'Pending') }} {{ page.pending }}</span></div>
+    <div ref="scroller" class="panel log-list" :aria-busy="loading" tabindex="0" :aria-label="t('日志列表，向上滚动加载历史', 'Log list; scroll up for history')" @scroll.passive="onScroll">
+      <div class="history-status"><button v-if="page.next_cursor" class="button-secondary" :disabled="loading" @click="load(false, true)">{{ loading ? t('加载中…', 'Loading…') : t('向上滚动加载更早日志', 'Scroll up for older logs') }}</button><span v-else class="subtle">{{ t('已到保留日志的开头', 'Beginning of retained logs') }}</span></div>
+      <p v-if="!page.items.length">{{ loading ? t('加载中…', 'Loading…') : t('暂无符合条件的日志', 'No matching logs') }}</p>
+      <details v-for="entry in page.items" :key="entry.id" :data-log-id="entry.id" class="ui-disclosure log-entry">
+        <summary><span class="badge" :class="{ error: entry.level === 'ERROR' || entry.level === 'CRITICAL', warning: entry.level === 'WARNING' }">{{ entry.level }}</span><time>{{ new Date(entry.timestamp).toLocaleString() }}</time><span>{{ entry.source }}</span><strong>{{ entry.event }}</strong></summary>
+        <dl><template v-for="(value, key) in entry.details" :key="key"><dt>{{ key }}</dt><dd>{{ value }}</dd></template></dl>
+      </details>
+    </div>
+  </section>
+</template>
+
+<style scoped>
+.logs-page > * { width: 100%; max-width: 1180px; margin-inline: auto; box-sizing: border-box; }
+.logs-page > .subtle { margin-block: var(--space-md); }
+.log-controls { margin-block: var(--space-md); }
+.log-list { height: min(65vh, 800px); min-height: 240px; overflow-y: auto; overscroll-behavior: contain; overflow-anchor: none; scroll-behavior: auto; }
+.history-status { text-align: center; margin-bottom: var(--space-md); }
+.log-filters { display: flex; align-items: end; flex-wrap: wrap; gap: var(--space-md); }
+.log-filters .field { min-width: 140px; margin: 0; }
+.log-search { flex: 1; }
+.log-entry { border-bottom: 1px solid var(--color-border-subtle); padding: var(--space-sm); }
+.log-entry + .log-entry { margin-top: var(--space-xs); }
+.log-entry summary { display: flex; flex-wrap: wrap; gap: var(--space-sm); cursor: pointer; align-items: center; overflow-wrap: anywhere; }
+.log-entry summary::after { margin-left: auto; }
+.log-entry dl { display: grid; grid-template-columns: minmax(100px, 160px) 1fr; gap: var(--space-sm); font-size: var(--font-size-sm); }
+.log-entry dd { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; min-width: 0; }
+.log-entry dt, .log-entry time { color: var(--color-text-secondary); }
+</style>

frontend/src/features/settings/SettingsView.spec.ts

@@ -7,6 +7,31 @@ import { useProviderStore } from '@/stores/provider'
 import { useSettingsStore } from '@/stores/settings'
 
 beforeEach(() => { localStorage.clear(); setActivePinia(createPinia()) })
+it('separates unfinished indexing from retrieval activity and retains short search totals', async () => {
+  const store = useSettingsStore()
+  vi.spyOn(store, 'loadDiagnostics').mockResolvedValue()
+  const providers = useProviderStore()
+  vi.spyOn(providers, 'loadProviders').mockResolvedValue()
+  vi.spyOn(providers, 'loadPresets').mockResolvedValue()
+  vi.spyOn(providers, 'refreshEnabledModels').mockResolvedValue()
+  const wrapper = mount(SettingsView, { global: { stubs: { UsageCard: true, LocalModelSettings: true, ModelRoutingSettings: true } } })
+  await flushPromises()
+  await wrapper.findAll('button').find(button => button.text() === '索引与模型')!.trigger('click')
+  expect(wrapper.text()).toContain('未完成索引 未获取')
+  store.indexStatus = { status: 'idle', pending_jobs: 1, running_jobs: 0, total_notes: 16, total_blocks: 3787, vector_refresh_required: true,
+    active_searches: 0, completed_searches: 2, failed_searches: 1, cancelled_searches: 0 }
+  await flushPromises()
+  expect(wrapper.text()).toContain('全文可用 · 向量待重建')
+  expect(wrapper.text()).toContain('未完成索引 1')
+  expect(wrapper.text()).toContain('已完成 2')
+  expect(wrapper.text()).toContain('失败 1')
+  store.indexStatus.status = 'indexing'
+  store.indexStatus.running_jobs = 1
+  await flushPromises()
+  expect(wrapper.text()).toContain('后台计算索引')
+  expect(wrapper.findAll('button').find(button => button.text() === '重建全部')!.attributes('disabled')).toBeDefined()
+  wrapper.unmount()
+})
 it('shows provider status and enables testing only after a successful enable', async () => {
   const store = useProviderStore()
   store.providers = [{ provider_id: 'p1', name: 'Example', provider_type: 'openai_compatible', enabled: false, default_model: '', capabilities: {}, has_credential: false }]

frontend/src/features/settings/SettingsView.vue

@@ -128,7 +128,32 @@ async function chooseDefaultModel(provider: ProviderConfig, event: Event) {
       <UsageCard />
     </div>
 
-    <div v-else-if="activeSection === 'index'" class="panel settings-section"><h2>{{ t('索引与模型', 'Index and Models') }}</h2><div class="index-summary"><div><span class="badge" :class="{ success: settingsStore.indexStatus.status === 'idle', error: settingsStore.indexStatus.status === 'error' }">{{ settingsStore.indexStatus.status }}</span><p>{{ t('待处理任务', 'Pending jobs') }} {{ settingsStore.indexStatus.pending_jobs }}</p></div><div><strong>{{ settingsStore.indexStatus.total_notes ?? t('未获取', 'Unavailable') }}</strong><small>{{ t('笔记', 'Notes') }}</small></div><div><strong>{{ settingsStore.indexStatus.total_blocks ?? t('未获取', 'Unavailable') }}</strong><small>Block</small></div></div><div v-if="settingsStore.indexStatus.error" class="error-banner">{{ settingsStore.indexStatus.error }}</div><div class="inline-actions"><button class="button-primary" @click="settingsStore.rebuildIndex('full')">{{ t('重建全部', 'Rebuild all') }}</button><span class="subtle">{{ t('当前后端支持全量重建。', 'The current backend supports a full rebuild.') }}</span></div><ModelRoutingSettings /></div>
+    <div v-else-if="activeSection === 'index'" class="panel settings-section">
+      <h2>{{ t('索引与模型', 'Index and Models') }}</h2>
+      <div class="index-summary">
+        <div>
+          <span class="badge" :class="{ success: settingsStore.indexStatus.status === 'idle' && !settingsStore.indexStatus.vector_refresh_required && !settingsStore.indexStatus.active_searches, error: settingsStore.indexStatus.status === 'error' }">{{ settingsStore.indexStatusLabel }}</span>
+          <p>{{ t('未完成索引', 'Unfinished indexing jobs') }} {{ settingsStore.indexStatus.status === 'unknown' ? t('未获取', 'Unavailable') : settingsStore.indexStatus.pending_jobs }}</p>
+          <small>{{ t('运行中', 'Running') }} {{ settingsStore.indexStatus.running_jobs ?? t('未获取', 'Unavailable') }}</small>
+        </div>
+        <div><strong>{{ settingsStore.indexStatus.total_notes ?? t('未获取', 'Unavailable') }}</strong><small>{{ t('笔记', 'Notes') }}</small></div>
+        <div><strong>{{ settingsStore.indexStatus.total_blocks ?? t('未获取', 'Unavailable') }}</strong><small>Block</small></div>
+      </div>
+      <p class="subtle">{{ t('未完成数包含运行中的任务；全库重建计为一个任务，不是笔记或 Block 数量。', 'Unfinished jobs include running jobs. A full rebuild counts as one job, not the number of notes or blocks.') }}</p>
+      <div class="index-search-activity">
+        <h3>{{ t('向量 / 混合检索', 'Vector / hybrid searches') }}</h3>
+        <div class="inline-actions">
+          <span>{{ t('进行中', 'Active') }} {{ settingsStore.indexStatus.active_searches ?? t('未获取', 'Unavailable') }}</span>
+          <span>{{ t('已完成', 'Completed') }} {{ settingsStore.indexStatus.completed_searches ?? t('未获取', 'Unavailable') }}</span>
+          <span>{{ t('失败', 'Failed') }} {{ settingsStore.indexStatus.failed_searches ?? t('未获取', 'Unavailable') }}</span>
+          <span>{{ t('已取消', 'Cancelled') }} {{ settingsStore.indexStatus.cancelled_searches ?? t('未获取', 'Unavailable') }}</span>
+        </div>
+        <p class="subtle">{{ t('统计本次 AI Core 启动以来的检索，包含搜索、对话和智能体调用；不计纯全文检索。', 'Counts searches, chat and agent retrievals since AI Core started; excludes full-text-only searches.') }}</p>
+      </div>
+      <div v-if="settingsStore.indexStatus.error" class="error-banner">{{ settingsStore.indexStatus.error }}</div>
+      <div class="inline-actions"><button class="button-primary" :disabled="settingsStore.indexStatus.status === 'indexing'" @click="settingsStore.rebuildIndex('full')">{{ t('重建全部', 'Rebuild all') }}</button><span class="subtle">{{ t('当前后端支持全量重建。', 'The current backend supports a full rebuild.') }}</span></div>
+      <ModelRoutingSettings />
+    </div>
 
     <div v-else-if="activeSection === 'permissions'" class="panel settings-section"><h2>{{ t('权限策略', 'Permission Policy') }}</h2><p class="muted section-description">{{ t('以下为后端当前生效的权限策略；全局策略编辑尚未开放，运行时按实际权限请求确认。', 'These policies are active in the backend. Global policy editing is not yet available; runtime requests are confirmed as needed.') }}</p><p v-if="!Object.keys(settingsStore.permissionPolicy).length" class="subtle">{{ t('尚未获取权限策略，请检查后端连接并重新检测。', 'Permission policy is unavailable. Check the backend connection and try again.') }}</p><div class="permission-list"><div v-for="(policy, permission) in settingsStore.permissionPolicy" :key="permission" class="setting-row"><span><strong>{{ permission }}</strong></span><span>{{ policy === 'allow' ? t('允许', 'Allow') : policy === 'confirm' ? t('每次确认', 'Confirm each time') : t('拒绝', 'Deny') }}</span></div></div></div>
 

frontend/src/features/tasks/TasksView.vue

@@ -3,12 +3,17 @@ import ActionDialog from '@/components/common/ActionDialog.vue'
 import { useActionDialog } from '@/composables/useActionDialog'
 const { actionDialog, resolveAction, askConfirm } = useActionDialog()
 import AppDialog from '@/components/common/AppDialog.vue'
-import { onMounted, reactive, ref } from 'vue'
+import { computed, watch, onMounted, reactive, ref } from 'vue'
 import type { TaskItem, TaskStatus } from '@/contracts'
 import { useTaskStore } from '@/stores/task'
 import { localeTag, t } from '@/i18n'
 
 const taskStore = useTaskStore()
+const page = ref(1)
+const pageCount = computed(() => Math.max(1, Math.ceil(taskStore.filteredTasks.length / 100)))
+const visibleTasks = computed(() => taskStore.filteredTasks.slice((page.value - 1) * 100, page.value * 100))
+watch(() => [taskStore.filterStatus, taskStore.filterPriority, taskStore.filterSource], () => { page.value = 1 })
+watch(pageCount, count => { page.value = Math.min(page.value, count) })
 const showForm = ref(false)
 const editingId = ref<string | null>(null)
 const actionError = ref('')
@@ -44,13 +49,14 @@ async function remove(task: TaskItem) {
     <header class="feature-header"><div><h1>{{ t('任务', 'Tasks') }}</h1><p>{{ t('管理用户、笔记和 Agent 产生的行动项。', 'Manage action items created by users, notes, and agents.') }}</p></div><button class="button-primary" @click="resetForm(); showForm = true">＋ {{ t('新建任务', 'New task') }}</button></header>
     <div v-if="taskStore.error || actionError" class="error-banner">{{ taskStore.error || actionError }}</div>
     <div v-if="taskStore.filteredTasks.length" class="task-list">
-      <article v-for="task in taskStore.filteredTasks" :key="task.task_id" class="item-card task-card">
+      <article v-for="task in visibleTasks" :key="task.task_id" class="item-card task-card">
         <button class="status-check" :class="{ done: task.status === 'done' }" :title="t('切换完成状态', 'Toggle completion')" @click="setStatus(task, task.status === 'done' ? 'todo' : 'done')">{{ task.status === 'done' ? '✓' : '' }}</button>
         <div class="task-content"><div class="task-title"><strong :class="{ completed: task.status === 'done' }">{{ task.title }}</strong></div><p v-if="task.description" class="muted">{{ task.description }}</p><div class="subtle"><span>{{ task.status }}</span><span v-if="task.due_date">{{ t('截止', 'Due') }} {{ new Date(task.due_date).toLocaleString(localeTag()) }}</span><span v-if="task.note_id">{{ t('关联 Note', 'Linked Note') }}: {{ task.note_id }}</span></div></div>
         <div class="inline-actions"><button class="icon-button" @click="editTask(task)">{{ t('编辑', 'Edit') }}</button><button class="button-danger" @click="remove(task)">{{ t('删除', 'Delete') }}</button></div>
       </article>
     </div>
     <div v-else class="empty-state"><div><strong>{{ taskStore.isLoading ? t('正在加载任务…', 'Loading tasks…') : t('没有符合条件的任务', 'No matching tasks') }}</strong><p>{{ t('创建一项任务，或调整左侧筛选条件。', 'Create a task or adjust the filters.') }}</p></div></div>
+    <nav v-if="pageCount > 1" class="inline-actions"><button class="button-secondary" :disabled="page === 1" @click="page--">{{ t('上一页', 'Previous') }}</button><span>{{ page }} / {{ pageCount }} · {{ taskStore.filteredTasks.length }}</span><button class="button-secondary" :disabled="page === pageCount" @click="page++">{{ t('下一页', 'Next') }}</button></nav>
     <AppDialog v-if="showForm" :label="t('任务表单', 'Task form')" @close="showForm = false"><div class="modal"><h2>{{ editingId ? t('编辑任务', 'Edit task') : t('新建任务', 'New task') }}</h2><form @submit.prevent="saveTask"><div class="field"><label>{{ t('标题', 'Title') }}</label><input v-model="form.title" class="input" required /></div><div class="field"><label>{{ t('描述', 'Description') }}</label><textarea v-model="form.description" class="textarea" /></div><div class="field"><label>{{ t('截止时间', 'Due date') }}</label><input v-model="form.due_date" class="input" type="datetime-local" /></div><div class="field"><label>{{ t('关联 Note ID', 'Linked Note ID') }}</label><input v-model="form.note_id" class="input" /></div><div class="inline-actions"><button class="button-primary">{{ t('保存', 'Save') }}</button><button type="button" class="button-secondary" @click="showForm = false">{{ t('取消', 'Cancel') }}</button></div></form></div></AppDialog>
   </section>
 </template>

frontend/src/features/themes/ThemesView.spec.ts

@@ -96,7 +96,7 @@ it.each(mockCommunityThemes)('previews uninstalled $theme_id using its actual CS
 
 it('offers and applies the paper theme update without discarding the active theme', async () => {
   const store = useThemeStore()
-  const old = await inspectThemePackage(paperPackage.replace('version: 1.8.0', 'version: 1.6.1'))
+  const old = await inspectThemePackage(paperPackage.replace(/^version: .+$/m, 'version: 1.6.1'))
   await store.installThemeFromInspection(old.manifest, old.css)
   store.applyTheme('paper-moments')
   wrapper = mount(ThemesView, { global: { stubs: { MarkdownContent: true } } })
@@ -105,6 +105,6 @@ it('offers and applies the paper theme update without discarding the active them
   const card = wrapper.findAll('article.theme-card').find(item => item.text().includes('Paper Moments'))!
   await card.findAll('button').find(button => button.text() === '更新')!.trigger('click')
   await flushPromises()
-  expect(store.allThemes.find(theme => theme.theme_id === 'paper-moments')?.version).toBe('1.8.0')
+  expect(store.allThemes.find(theme => theme.theme_id === 'paper-moments')?.version).toBe('1.8.1')
   expect(document.getElementById('theme-style-paper-moments')!.textContent).toContain('.surface-nested')
 })

frontend/src/features/vault/VaultEntry.vue

@@ -65,7 +65,8 @@ async function openFolderPicker() {
         <p class="app-subtitle">{{ t('本地优先的 AI 笔记软件', 'A local-first AI note-taking app') }}</p>
       </div>
 
-      <div class="vault-card">
+        <div class="vault-card">
+          <button class="btn" @click="router.push('/logs')">{{ t('查看运行日志', 'View operation logs') }}</button>
         <div v-if="openError" class="error-banner" role="alert">{{ openError }} <button class="btn" @click="initializeVault" :disabled="isLoading">{{ t('重试', 'Retry') }}</button></div>
         <p v-if="isLoading" role="status">{{ t('正在打开知识库…', 'Opening knowledge base…') }}</p>
         <h2 class="card-title">{{ t('选择知识库', 'Select Knowledge Base') }}</h2>

frontend/src/router/index.ts

@@ -3,6 +3,7 @@ import { useWorkspaceStore } from '@/stores/workspace'
 import { t } from '@/i18n'
 
 const routes = [
+  { path: '/logs', name: 'logs', component: () => import('@/features/logs/LogsView.vue'), meta: { title: '运行日志' } },
   { path: '/media', name: 'media', component: () => import('@/features/media/MediaView.vue'), meta: { title: '音视频转写', requiresVault: true } },
   {
     path: '/',
@@ -91,6 +92,7 @@ router.beforeEach((to) => {
 export function updateDocumentTitle(to = router.currentRoute.value) {
   const baseTitle = 'NotesAgent'
   const titles: Record<string, string> = {
+    logs: t('运行日志', 'Operation logs'),
     media: t('音视频转写', 'Media Transcription'),
     'vault-entry': t('选择知识库', 'Select Knowledge Base'),
     workspace: t('工作区', 'Workspace'),

frontend/src/services/indexService.ts

@@ -3,6 +3,11 @@ import type { ApiIndexJob, ApiIndexStatus, IndexStatus } from '@/contracts'
 
 function toIndexStatus(status: ApiIndexStatus): IndexStatus {
   return {
+    running_jobs: status.running_jobs,
+    active_searches: status.active_searches,
+    completed_searches: status.completed_searches,
+    failed_searches: status.failed_searches,
+    cancelled_searches: status.cancelled_searches,
     vector_refresh_required: status.vector_refresh_required ?? false,
     status: status.status === 'idle' ? 'idle' : status.status === 'failed' ? 'error' : 'indexing',
     pending_jobs: status.pending_jobs,

frontend/src/stores/agent.ts

@@ -58,9 +58,22 @@ export const useAgentStore = defineStore('agent', () => {
     tools.value = await agentService.listTools()
   }
 
+  let listVersion = 0
   async function loadRuns() {
-    const resp = await agentService.listAgentRuns()
-    runs.value = resp.items
+    const version = ++listVersion
+    const items: AgentRun[] = []
+    let offset = 0
+    do {
+      const resp = await agentService.listAgentRuns({ limit: 100, offset })
+      if (version !== listVersion) return
+      items.push(...resp.items)
+      offset += resp.items.length
+      if (!resp.items.length || offset >= resp.total) break
+    } while (true)
+    const active = runs.value.find(run => run.run_id === activeRunId.value)
+    const merged = new Map(items.map(item => [item.run_id, item]))
+    if (active && !merged.has(active.run_id)) merged.set(active.run_id, active)
+    runs.value = [...merged.values()]
   }
 
   async function loadRun(runId: string) {

frontend/src/stores/listPagination.spec.ts

@@ -0,0 +1,29 @@
+// @vitest-environment happy-dom
+import { beforeEach, expect, it, vi } from 'vitest'
+import { createPinia, setActivePinia } from 'pinia'
+import { useTaskStore } from './task'
+import { useAgentStore } from './agent'
+const mocks = vi.hoisted(() => ({ tasks: vi.fn(), runs: vi.fn() }))
+vi.mock('@/services/taskService', () => ({ listTasks: mocks.tasks }))
+vi.mock('@/services/agentService', () => ({ listAgentRuns: mocks.runs }))
+beforeEach(() => { setActivePinia(createPinia()); vi.clearAllMocks() })
+it('loads tasks past the first page before applying global status filters', async () => {
+  const tasks = Array.from({ length: 251 }, (_, i) => ({ task_id: `t${i}`, status: i >= 200 ? 'done' : 'todo' }))
+  mocks.tasks.mockImplementation(async ({ offset, limit }) => ({ items: tasks.slice(offset, offset + limit), total: tasks.length }))
+  const store = useTaskStore()
+  await store.loadTasks()
+  expect(store.tasks).toHaveLength(251)
+  store.setFilterStatus('done')
+  expect(store.filteredTasks).toHaveLength(51)
+  expect(mocks.tasks).toHaveBeenCalledTimes(3)
+})
+it('includes older Agent history and leaves failed refresh data intact', async () => {
+  const runs = Array.from({ length: 201 }, (_, i) => ({ run_id: `r${i}`, status: 'completed' }))
+  mocks.runs.mockImplementation(async ({ offset, limit }) => ({ items: runs.slice(offset, offset + limit), total: runs.length }))
+  const store = useAgentStore()
+  await store.loadRuns()
+  expect(store.runs).toHaveLength(201)
+  mocks.runs.mockRejectedValue(new Error('offline'))
+  await expect(store.loadRuns()).rejects.toThrow('offline')
+  expect(store.runs).toHaveLength(201)
+})

frontend/src/stores/settings.ts

@@ -1,5 +1,5 @@
 import { defineStore } from 'pinia'
-import { ref, watch } from 'vue'
+import { computed, ref, watch } from 'vue'
 import type { AiCoreStatus, IndexStatus } from '@/contracts'
 import { resolveApiUrl } from '@/services/apiClient'
 import packageInfo from '../../package.json'
@@ -31,6 +31,15 @@ export const useSettingsStore = defineStore('settings', () => {
   // Index
   const emptyIndex = (): IndexStatus => ({ status: 'unknown', pending_jobs: 0, total_notes: null, total_blocks: null })
   const indexStatus = ref<IndexStatus>(emptyIndex())
+  const indexStatusLabel = computed(() => {
+    const value = indexStatus.value
+    if (value.status === 'unknown') return t('索引状态未获取', 'Index status unavailable')
+    if (value.status === 'indexing') return t('后台计算索引', 'Indexing in background')
+    if (value.status === 'error') return t('索引错误', 'Index error')
+    if (value.vector_refresh_required) return t('全文可用 · 向量待重建', 'Full text ready · vectors need rebuilding')
+    if (value.active_searches) return t('向量检索中', 'Vector search running')
+    return t('索引就绪', 'Index ready')
+  })
 
   // Permissions
   const permissionPolicy = ref<Record<string, 'allow' | 'confirm' | 'deny'>>({})
@@ -85,6 +94,7 @@ export const useSettingsStore = defineStore('settings', () => {
     aiCoreStatus,
     aiCoreAddress,
     indexStatus,
+    indexStatusLabel,
     permissionPolicy,
     diagnosticsError,
     loadDiagnostics,

frontend/src/stores/task.ts

@@ -25,16 +25,27 @@ export const useTaskStore = defineStore('task', () => {
   const inProgressTasks = computed(() => tasks.value.filter((t) => t.status === 'in_progress'))
   const doneTasks = computed(() => tasks.value.filter((t) => t.status === 'done'))
 
+  let loadVersion = 0
   async function loadTasks() {
+    const version = ++loadVersion
     isLoading.value = true
     try {
-      const resp = await listTasks()
-      tasks.value = resp.items
+      const items: TaskItem[] = []
+      let offset = 0
+      do {
+        const resp = await listTasks({ limit: 100, offset })
+        if (version !== loadVersion) return
+        items.push(...resp.items)
+        offset += resp.items.length
+        if (!resp.items.length || offset >= resp.total) break
+      } while (true)
+      tasks.value = [...new Map(items.map(item => [item.task_id, item])).values()]
       error.value = null
     } catch (reason) {
+      if (version !== loadVersion) return
       error.value = reason instanceof Error ? reason.message : t('任务加载失败', 'Failed to load tasks')
     } finally {
-      isLoading.value = false
+      if (version === loadVersion) isLoading.value = false
     }
   }
 

frontend/tests/performance/README.md

@@ -40,3 +40,15 @@ backend/.venv/Scripts/python.exe frontend/tests/performance/run-stress.py --url
 `--scroll` 使用纸间时光主题及高度受限的编辑区，派发 120 次真实 CDP 滚轮事件（先向下再向上），记录 animation frame 间隔与长任务；随后从文末全部折叠，记录滚动位置和光标位置。可追加 `--profile --sizes 120000 --runs 1` 保存 CPU profile，用 Chrome DevTools Performance 面板导入。采样会增加开销，勿将 profile 结果与无采样结果直接比较。
 
 帧间隔包含无头浏览器、CDP 调度和布局开销，不等同于用户设备的 FPS。滚轮模式不验证输入法、保存或图表渲染。当前测试容器改为有限高度的 flex 布局，早期普通事务报告使用的容器布局不同，跨版本比较应分别保留同一布局下的基线。
+
+主题对比使用 URL 查询参数：`stress.html?theme=light`、`?theme=dark`，默认是 `paper-moments`。诊断参数 `?variant=no-outline` 可关闭编辑区轮廓线，用于隔离旧版纸间时光的长文开销；1.8.1 已不再使用这条 outline。`--screenshot` 会在派发滚轮前保存当前视口 PNG，截图时间可能计入记录区间。
+
+## Agent 与任务
+
+`agent-task.html?kind=tasks&theme=light` 测试任务组件，`kind=trace` 测试 Trace；支持 light、dark、paper-moments。继续使用 `run-stress.py --scroll`，任务规模可设 `--sizes 100 1000`，Trace 可设 `--sizes 200 2000 10000`。每个规模在新页面中生成独立数据，所有 fetch 被拦截，未知请求直接失败，不落到真实后端。
+
+任务先记录实际分页加载数量，再注入全量夹具测渲染上限，结果包含 `fullListIsInjected`。Trace 测量时间线、树形搜索及切换；滚轮区间与过滤区间分别计时。`scrollContainers` 和 `maxScrollTop` 用来确认目标实际滚动。完整结果及限制见 [Agent 与任务压测报告](../../../docs/development/Agent与任务压测报告.md)。
+
+修复后任务会读取所有 API 页，渲染每页 100 条；Trace 每页 200 条，筛选仍覆盖完整数据。`renderedTasks`、`totalFilteredCount` 区分 DOM 数量与实际记录总数，不能把分页后的 DOM 数量误报为数据丢失。
+
+`logs.html?theme=paper-moments` 使用隔离的合成日志，支持 `light`、`dark` 主题，用于筛选栏、日志详情和主题视觉检查。可搭配驱动的 `--scroll --screenshot --sizes 1 --runs 1` 保存首屏；该夹具不连接真实日志库，不用于测后端日志吞吐。

frontend/tests/performance/agent-task.html

@@ -0,0 +1,98 @@
+<!doctype html><html><head><meta charset="utf-8"><title>Agent 与任务压测</title></head>
+<body><div id="viewport"><div id="app"></div></div>
+<script type="module">
+import { createApp, h, nextTick, ref } from 'vue'
+import { createPinia } from 'pinia'
+import TasksView from '/src/features/tasks/TasksView.vue'
+import TraceTimeline from '/src/features/agent/TraceTimeline.vue'
+import { useTaskStore } from '/src/stores/task.ts'
+import { getCommunityThemePreviewCss } from '/src/services/themePackageService.ts'
+import '/src/styles/tokens.css'
+import '/src/styles/features.css'
+const frame = () => new Promise(resolve => requestAnimationFrame(resolve))
+const settle = async () => { await nextTick(); await frame(); await frame() }
+const summary = values => { const sorted=[...values].sort((a,b)=>a-b); return {median:sorted[Math.floor(sorted.length/2)]??0,p95:sorted[Math.ceil(sorted.length*.95)-1]??0,max:sorted.at(-1)??0} }
+window.prepareScrollBenchmark = async (size = 1000) => {
+ const params=new URLSearchParams(location.search), kind=params.get('kind')||'tasks', theme=params.get('theme')||'light'
+ document.documentElement.dataset.theme=theme
+ const style=document.createElement('style');style.textContent=theme==='paper-moments'?getCommunityThemePreviewCss(theme):'';document.head.append(style)
+ const pinia=createPinia(), store=useTaskStore(pinia), host=document.getElementById('app'), viewport=document.getElementById('viewport')
+ // App tokens normally clip #app; the real Agent page provides its own scroller.
+ // This standalone Trace mount uses #viewport in that role.
+ if(kind==='trace'){host.style.height='auto';host.style.overflow='visible'}
+ const date='2026-09-06T00:00:00Z'
+ const tasks=Array.from({length:size},(_,i)=>({task_id:`task_${i}`,title:`压测任务 ${i}`,description:'用于验证任务列表渲染与筛选，独立生成，不读取真实笔记。',status:i%3===0?'done':'todo',created_at:date,updated_at:date}))
+ const events=ref(Array.from({length:size},(_,i)=>{
+  const step=Math.floor(i/4), event=['ModelCallStarted','ModelCallCompleted','ToolCall','ToolResult'][i%4]
+  return {run_id:'stress',sequence:i,event,timestamp:new Date(Date.parse(date)+i*10).toISOString(),data:{step,model_call_id:`m_${step}`,parent_model_call_id:`m_${step}`,tool_call_id:`t_${step}`,name:'system.echo',arguments:{text:`压力测试 ${step}`},output:{text:'工具返回内容'},success:true,duration_ms:10}}
+ }))
+ const originalFetch=window.fetch, requests=[]
+ // Intercept every request in this isolated page: never fall through to the user's backend.
+ window.fetch=async (input)=>{
+  const url=new URL(typeof input==='string'?input:input.url,location.href);requests.push(url.pathname+url.search)
+  if(url.pathname==='/api/tasks'){
+   const limit=Number(url.searchParams.get('limit')||50),offset=Number(url.searchParams.get('offset')||0)
+   return new Response(JSON.stringify({items:tasks.slice(offset,offset+limit),page:{total:size,limit,offset}}),{headers:{'Content-Type':'application/json'}})
+  }
+  throw Error(`Unexpected request in isolated benchmark: ${url.pathname}`)
+ }
+ const start=performance.now()
+ const app=createApp({render:()=>kind==='tasks'?h(TasksView):h(TraceTimeline,{events:events.value,runStatus:'completed'})}).use(pinia)
+ app.mount(host)
+ await settle()
+ while(store.isLoading) await settle()
+ const result={kind,theme,size,initialRenderMs:performance.now()-start,requests,initialTaskCount:kind==='tasks'?store.tasks.length:undefined}
+ if(kind==='tasks'){
+  const fullStart=performance.now();store.tasks=tasks;await settle()
+  result.fullListRenderMs=performance.now()-fullStart
+  result.fullListIsInjected=true; result.renderedTasks=host.querySelectorAll('article.task-card').length // Diagnostic upper bound, distinct from current paginated API behavior.
+ }
+ result.domNodes=host.querySelectorAll('*').length
+ const scroller=host.querySelector('.feature-page')||viewport
+ result.scrollContainers=[...document.querySelectorAll('html,body,#app,#viewport,.trace-visualization,.timeline-view,.timeline')].map(element=>({node:element.id||element.className||element.tagName,height:element.clientHeight,scrollHeight:element.scrollHeight,overflow:getComputedStyle(element).overflow,position:getComputedStyle(element).position}))
+ let maxScrollTop=0
+ const trackScroll=()=>{maxScrollTop=Math.max(maxScrollTop,scroller.scrollTop)}
+ scroller.addEventListener('scroll',trackScroll,{passive:true})
+ const gaps=[],longTasks=[];let last=performance.now(),raf=0
+ const tick=now=>{gaps.push(now-last);last=now;raf=requestAnimationFrame(tick)}
+ const observer=new PerformanceObserver(list=>longTasks.push(...list.getEntries().map(t=>t.duration)))
+ observer.observe({type:'longtask',buffered:false});raf=requestAnimationFrame(tick)
+ window.finishScrollBenchmark=async()=>{
+  cancelAnimationFrame(raf);observer.disconnect()
+  result.frameGapsMs=summary(gaps);result.frames=gaps.length;result.longTasks=longTasks
+  result.scrollTop=scroller.scrollTop;result.scrollHeight=scroller.scrollHeight;result.maxScrollTop=maxScrollTop
+  scroller.removeEventListener('scroll',trackScroll)
+  const started=performance.now()
+  if(kind==='tasks'){
+   store.setFilterStatus('done');await settle()
+   result.filteredCount=host.querySelectorAll('article.task-card').length
+   result.totalFilteredCount=store.filteredTasks.length
+   result.expectedFilteredCount=Math.min(100,tasks.filter(task=>task.status==='done').length)
+   if(result.filteredCount!==result.expectedFilteredCount)throw Error('Task filter lost items')
+  } else {
+   const input=host.querySelector('input')
+   if(input){input.value='压力测试 1';input.dispatchEvent(new Event('input',{bubbles:true}));await settle()}
+   result.filteredDomNodes=host.querySelectorAll('*').length
+   result.filteredCount=host.querySelectorAll('.event-card').length
+   result.expectedFilteredCount=Math.min(200,events.value.filter(event=>JSON.stringify(event.data).includes('压力测试 1')).length)
+   if(result.filteredCount!==result.expectedFilteredCount)throw Error('Trace filter lost events')
+  }
+  result.filterMs=performance.now()-started
+  if(kind==='trace'){
+   const input=host.querySelector('input');input.value='';input.dispatchEvent(new Event('input',{bubbles:true}));await settle()
+   let start=performance.now()
+   ;[...host.querySelectorAll('.view-toggle button')].find(button=>button.textContent==='树形').click();await settle()
+   result.treeSwitchMs=performance.now()-start
+   start=performance.now();input.value='压力测试';input.dispatchEvent(new Event('input',{bubbles:true}));await settle()
+   result.treeFilterMs=performance.now()-start
+   result.treeFilteredDomNodes=host.querySelectorAll('*').length
+  }
+  app.unmount();window.fetch=originalFetch;style.remove()
+  return result
+ }
+ const bounds=viewport.getBoundingClientRect();return {x:bounds.left+bounds.width/2,y:bounds.top+bounds.height/2}
+}
+window.runBenchmark=async size=>{await window.prepareScrollBenchmark(size);return window.finishScrollBenchmark()}
+</script>
+<style>html,body{height:100%;margin:0;background:var(--color-background-primary);color:var(--color-text-primary);font-family:system-ui}#viewport{height:100vh;overflow:auto}#app{max-width:1200px;margin:auto;padding:24px;box-sizing:border-box}</style>
+</body></html>

frontend/tests/performance/logs.html

@@ -0,0 +1,31 @@
+<!doctype html><html><head><meta charset="utf-8"><title>日志页面视觉验收</title></head>
+<body><div id="app"></div><script type="module">
+import { createApp, nextTick } from 'vue'
+import LogsView from '/src/features/logs/LogsView.vue'
+import { getCommunityThemePreviewCss } from '/src/services/themePackageService.ts'
+import '/src/styles/tokens.css'
+import '/src/styles/features.css'
+const theme = new URLSearchParams(location.search).get('theme') || 'paper-moments'
+document.documentElement.dataset.theme = theme
+const style = document.createElement('style'); style.textContent = getCommunityThemePreviewCss(theme); document.head.append(style)
+const entries = [
+ { source: 'vectors', event: 'embedding.failed', level: 'ERROR', details: { model: 'Bge-small-zh', device: 'cuda', error_code: 'LOCAL_CUDA_OOM', fallback: 'cpu', job_id: 'index_demo', frames: 'runtime.py:180:infer' } },
+ { source: 'agent', event: 'ToolResult', level: 'INFO', details: { run_id: 'run_demo', tool: 'tasks.create', status: 'running' } },
+ { source: 'tasks', event: 'task.created', level: 'INFO', details: { task_id: 'task_demo', run_id: 'run_demo', status: 'todo' } },
+ { source: 'models', event: 'model.embedding', level: 'WARNING', details: { model: 'Bge-small-zh', fallback: 'LOCAL_CUDA_OOM', device: 'cpu' } },
+ { source: 'http', event: 'request.finished', level: 'INFO', details: { method: 'POST', route: '/api/tasks', status: 200, duration_ms: 32.5 } },
+].map((entry, index) => ({ ...entry, id: 10-index, timestamp: '2026-09-06T08:00:00Z' }))
+window.fetch = async input => {
+ const url = new URL(typeof input === 'string' ? input : input.url, location.href)
+ if (url.pathname !== '/api/logs') throw Error('Unexpected request in isolated log preview')
+ return new Response(JSON.stringify({ items: entries, next_cursor: null, sources: entries.map(x => x.source), pending: 0, dropped: 0, write_failures: 0, retention: 20000 }), { headers: { 'Content-Type': 'application/json' } })
+}
+createApp(LogsView).mount('#app')
+window.prepareScrollBenchmark = async () => {
+ await new Promise(resolve => setTimeout(resolve, 300)); await nextTick()
+ document.querySelector('details').open = true
+ return { x: 700, y: 400 }
+}
+window.finishScrollBenchmark = async () => ({ theme, rows: document.querySelectorAll('details').length })
+window.runBenchmark = window.prepareScrollBenchmark
+</script></body></html>

frontend/tests/performance/run-stress.py

@@ -1,7 +1,7 @@
 """Real Chromium benchmark. Run with backend/.venv/Scripts/python.exe; requires websockets.
 Vite must be serving the frontend. Uses an isolated disposable browser profile.
 """
-import argparse, asyncio, json, pathlib, subprocess, tempfile, urllib.request
+import argparse, asyncio, base64, json, pathlib, subprocess, tempfile, urllib.request
 import websockets
 
 async def main(args):
@@ -44,6 +44,9 @@ async def main(args):
                         response = await call('Runtime.evaluate', {'expression':expression,'awaitPromise':True,'returnByValue':True})
                         if args.scroll and 'exceptionDetails' not in response:
                             point = response['result']['value']
+                            if args.screenshot:
+                                capture = await call('Page.captureScreenshot', {'format': 'png'})
+                                pathlib.Path(args.output + f'.{size}.{repeat+1}.png').write_bytes(base64.b64decode(capture['data']))
                             if args.profile:
                                 await call('Profiler.enable'); await call('Profiler.start')
                             await call('Input.dispatchMouseEvent', {'type':'mouseMoved', **point})
@@ -74,6 +77,7 @@ if __name__=='__main__':
     parser.add_argument('--runs',type=int,default=3)
     parser.add_argument('--output',required=True)
     parser.add_argument('--profile',action='store_true',help='Save CPU profiles for scroll runs')
+    parser.add_argument('--screenshot',action='store_true',help='Save a viewport screenshot before each scroll run')
     parser.add_argument('--scroll',action='store_true',help='Dispatch real wheel events and check fold-to-top')
     args = parser.parse_args()
     if args.runs < 1 or any(size < 1 for size in args.sizes): parser.error('runs and sizes must be positive')

frontend/tests/performance/stress.html

@@ -54,8 +54,12 @@ window.runBenchmark = async (size = 25000) => {
 
 window.prepareScrollBenchmark = async (size = 25000) => {
  const source = makeStressDocument(size), target = document.getElementById('app')
- document.documentElement.dataset.theme = 'paper-moments'
- const style = document.createElement('style'); style.textContent = getCommunityThemePreviewCss('paper-moments'); document.head.append(style)
+ const options = new URLSearchParams(location.search)
+ const theme = options.get('theme') || 'paper-moments'
+ document.documentElement.dataset.theme = theme
+ const style = document.createElement('style'); style.textContent = theme === 'paper-moments' ? getCommunityThemePreviewCss(theme) : ''; document.head.append(style)
+ const variant = options.get('variant') || 'default'
+ if (variant === 'no-outline') style.textContent += '.visual-editor .milkdown-host .ProseMirror { outline: none !important; }'
  const pinia = createPinia(), component = ref()
  const app = createApp({render:()=>h(Editor,{ref:component,initialContent:source})}).use(pinia)
  app.mount(target)
@@ -69,7 +73,7 @@ window.prepareScrollBenchmark = async (size = 25000) => {
  observer.observe({type:'longtask',buffered:false});raf=requestAnimationFrame(tick)
  window.finishScrollBenchmark = async () => {
   cancelAnimationFrame(raf);observer.disconnect()
-  const result={requestedHan:size,theme:'paper-moments',frameGapsMs:summarize(gaps),frames:gaps.length,framesOver25ms:gaps.filter(g=>g>25).length,longTasks:tasks,scrollTop:scroller.scrollTop,scrollHeight:scroller.scrollHeight}
+  const result={requestedHan:size,theme,variant,frameGapsMs:summarize(gaps),frames:gaps.length,framesOver25ms:gaps.filter(g=>g>25).length,longTasks:tasks,scrollTop:scroller.scrollTop,scrollHeight:scroller.scrollHeight}
   const editor=component.value.getEditor(),view=editor.action(ctx=>ctx.get(editorViewCtx))
   view.dispatch(view.state.tr.setSelection(TextSelection.near(view.state.doc.resolve(view.state.doc.content.size-1))))
   scroller.scrollTop=scroller.scrollHeight;await settle()