feat: 增量结果发布 + 每 tab 三状态徽章 + OverviewStats 必填字段兜底

之前结果只在所有 step 完成后才返回，导致前端看不到中间进度。本轮改：

后端增量发布：
- orchestrator.run_governance_workflow 新增 on_section_update 回调
  回调在每步完成且有 section_key 时触发
- job_manager 新增 _sync_section_update 同步回调到 job.result['sections']
  （job.result 在任务结束时再被整体 result 替换）
- api/routes.py /jobs/{id}/result 取消'必须 completed'限制，
  running/failed/cancelled 状态也允许读取 sections

前端轮询 + tab 状态：
- pollStatus 每 1.5s 同时拉 status 与 result；
  loadResult 改为 merge sections（不整体替换 jobResult）
- TAB_STEP_MAP 映射 tab -> (step, sectionKey)
- tabStatus computed 按状态返回 'idle'|'running'|'done'
- TAB_BADGE 配置：info(非分析对象)/warning(分析中)/success(分析完成)
- 6 个 el-tab-pane 全部改用 #label slot，加 el-tag 徽章

bug 修复：OverviewStats 必填字段在运行中没数据导致 500：
- core/models.py: database/host/db_type 改为带默认值 ''
- api/routes.py: OverviewStats 构造用 try/except 兜底，失败降级到全零值

AST 全部通过；本地 == HTTP 服务返回一致。

web/api/routes.py

@@ -186,7 +186,7 @@ async def cancel_job(job_id: str):
     return {"ok": True, "job_id": job_id}
 
 
-# ── 任务结果 ──
+# ── 任务结果（支持增量：运行中也可拿到已完成的 sections） ──
 @router.get("/jobs/{job_id}/result", response_model=JobResultResponse)
 async def get_job_result(job_id: str):
     jm = JobManager.get_instance()
@@ -194,20 +194,26 @@ async def get_job_result(job_id: str):
     if not job:
         logger.warning(f"GET /api/jobs/{job_id}/result 任务不存在")
         raise HTTPException(status_code=404, detail="任务不存在")
-    if job.status != "completed":
-        logger.warning(f"GET /api/jobs/{job_id}/result 任务未完成（status={job.status}）")
-        raise HTTPException(status_code=400, detail=f"任务未完成（当前: {job.status}）")
-
-    sections = job.result.get("sections", {})
-    overview_dict = sections.get("overview", {})
-    overview = OverviewStats(**{k: v for k, v in overview_dict.items() if k in OverviewStats.model_fields})
-    logger.info(f"GET /api/jobs/{job_id}/result 成功, sections={list(sections.keys())}")
+    # 不再要求 status == "completed"：运行中也允许前端拉取已完成的 sections
+    if job.status not in ("running", "completed", "failed", "cancelled"):
+        logger.warning(f"GET /api/jobs/{job_id}/result 任务状态异常（status={job.status}）")
+        raise HTTPException(status_code=400, detail=f"任务状态异常（当前: {job.status}）")
+
+    sections = job.result.get("sections", {}) if isinstance(job.result, dict) else {}
+    overview_dict = sections.get("overview", {}) or {}
+    # OverviewStats 必有字段（database/host/db_type）在运行中还没生成，
+    # 用 try/except 兜底：构造失败时降级到零值
+    try:
+        overview = OverviewStats(**{k: v for k, v in overview_dict.items() if k in OverviewStats.model_fields})
+    except Exception:
+        overview = OverviewStats()  # 全部走默认值
+    logger.info(f"GET /api/jobs/{job_id}/result 成功(status={job.status}), sections={list(sections.keys())}")
     return JobResultResponse(
         job_id=job_id,
         status=job.status,
         overview=overview,
         sections=sections,
-        reports=job.result.get("reports", {}),
+        reports=job.result.get("reports", {}) if isinstance(job.result, dict) else {},
     )
 
 

web/core/job_manager.py

@@ -229,6 +229,7 @@ class JobManager:
                 on_log=lambda entry: self._sync_log(job, entry),
                 on_step_start=lambda num, title: self._sync_step_start(job, num, title),
                 on_step_done=lambda num, title, ok: self._sync_step_done(job, num, title, ok),
+                on_section_update=lambda section_key, data: self._sync_section_update(job, section_key, data),
                 cancel_event=job._cancel_event,
             )
             job.result = result
@@ -278,6 +279,12 @@ class JobManager:
         else:
             job.steps_failed.append(num)
 
+    def _sync_section_update(self, job: Job, section_key: str, data: dict) -> None:
+        """Step 完成时增量落盘：让 API 可以拿到部分 sections"""
+        if not isinstance(job.result, dict):
+            job.result = {}
+        job.result.setdefault("sections", {})[section_key] = data
+
     # ── 查询 ──
     def get(self, job_id: str) -> Optional[Job]:
         return self.jobs.get(job_id)

web/core/models.py

@@ -95,9 +95,9 @@ class StandardsListResponse(BaseModel):
 
 # ── 治理结果（前端多级表格消费） ──
 class OverviewStats(BaseModel):
-    database: str
-    host: str
-    db_type: str
+    database: str = ""
+    host: str = ""
+    db_type: str = ""
     total_tables: int = 0
     total_fields: int = 0
     high_empty_fields: int = 0

web/core/orchestrator.py

@@ -88,6 +88,7 @@ async def run_governance_workflow(
     on_log: Callable[[dict], None] | None = None,
     on_step_start: Callable[[int, str], None] | None = None,
     on_step_done: Callable[[int, str, bool], None] | None = None,
+    on_section_update: Callable[[str, dict], None] | None = None,
     cancel_event: Optional[asyncio.Event] = None,
 ) -> dict:
     """主入口：跑一轮治理，返回结构化结果。
@@ -267,6 +268,9 @@ async def run_governance_workflow(
                 section_key = output.get("section_key")
                 if section_key:
                     sections[section_key] = output["data"]
+                    if on_section_update:
+                        try: on_section_update(section_key, output["data"])
+                        except Exception: pass
                 if output.get("extras"):
                     step_outputs[step_name(num)] = output["extras"]