BAI-15: group mentor answer bubbles

Co-authored-by: multica-agent <github@multica.ai>

app/backend/application.py

@@ -43,6 +43,7 @@ from backend.features.screener.service import (
 from backend.features.sentiment import SentimentServiceMixin
 from backend.features.sentiment.routes import SentimentRoutesMixin
 from backend.features.system import SystemHttpMixin
+from backend.features.system.health import HealthServiceMixin
 from backend.features.system.routes import SystemRoutesMixin
 from backend.features.system.service import SystemServiceMixin
 from backend.features.themes import ThemeServiceMixin
@@ -77,6 +78,7 @@ LEGACY_SECRET_KEYS = {
 
 
 class DashboardService(
+    HealthServiceMixin,
     SystemServiceMixin,
     AccountApplicationMixin,
     JobServiceMixin,

app/backend/features/system/health.py

@@ -0,0 +1,94 @@
+from __future__ import annotations
+
+from datetime import datetime
+from typing import Any
+
+
+class HealthServiceMixin:
+    def health_status(self) -> dict[str, Any]:
+        """Return a cheap public readiness summary without provider secrets."""
+        database_ready = False
+        database_status: dict[str, Any] = {}
+        try:
+            with self.database.connect() as connection:
+                database_ready = connection.execute("SELECT 1").fetchone() is not None
+            database_status = self.database.status()
+        except Exception:
+            database_ready = False
+
+        try:
+            recent_jobs = self.jobs.repository.recent(12)
+        except Exception:
+            recent_jobs = []
+
+        last_sync = database_status.get("last_sync") or {}
+        snapshot_dates = int(database_status.get("snapshot_dates") or 0)
+        data_configured = bool(self.configured)
+        last_sync_success = last_sync.get("status") == "success"
+        if data_configured and snapshot_dates and last_sync_success:
+            data_status = "ready"
+        elif snapshot_dates:
+            data_status = "degraded"
+        else:
+            data_status = "unavailable"
+
+        latest_job = recent_jobs[0] if recent_jobs else {}
+        failed_jobs = sum(1 for job in recent_jobs if job.get("status") == "failed")
+        if not database_ready:
+            jobs_status = "unavailable"
+        elif latest_job.get("status") == "running":
+            jobs_status = "running"
+        elif latest_job.get("status") == "failed":
+            jobs_status = "degraded"
+        else:
+            jobs_status = "ready"
+
+        platform = self._platform_llm_profile()
+        primary_ready = self._profile_configured(platform["primary"])
+        fallback_ready = self._profile_configured(platform["fallback"])
+        models_status = "ready" if primary_ready else "unavailable"
+
+        component_states = (
+            "ready",
+            "ready" if database_ready else "unavailable",
+            data_status,
+            jobs_status,
+            models_status,
+        )
+        return {
+            "ok": database_ready,
+            "status": (
+                "ready"
+                if all(state in {"ready", "running"} for state in component_states)
+                else "degraded"
+            ),
+            "account_required": True,
+            "time": datetime.now().astimezone().isoformat(timespec="seconds"),
+            "components": {
+                "process": {"status": "ready"},
+                "database": {
+                    "status": "ready" if database_ready else "unavailable",
+                    "snapshot_dates": snapshot_dates,
+                    "last_snapshot_at": database_status.get("updated_at") or "",
+                },
+                "data_sources": {
+                    "status": data_status,
+                    "configured": data_configured,
+                    "snapshot_available": snapshot_dates > 0,
+                    "latest_trade_date": str(last_sync.get("trade_date") or ""),
+                    "last_success_at": (
+                        str(last_sync.get("finished_at") or "") if last_sync_success else ""
+                    ),
+                },
+                "jobs": {
+                    "status": jobs_status,
+                    "recent_failures": failed_jobs,
+                    "latest_finished_at": str(latest_job.get("finished_at") or ""),
+                },
+                "models": {
+                    "status": models_status,
+                    "primary": "ready" if primary_ready else "unavailable",
+                    "fallback": "ready" if fallback_ready else "disabled",
+                },
+            },
+        }

app/backend/features/system/routes.py

@@ -1,20 +1,12 @@
 from __future__ import annotations
 
-from datetime import datetime
 from http import HTTPStatus
 
 
 class SystemRoutesMixin:
     def _handle_system_public_get(self, parsed) -> bool:
         if parsed.path == "/api/health":
-            self.send_json(
-                {
-                    "ok": True,
-                    "storage": "sqlite",
-                    "account_required": True,
-                    "time": datetime.now().astimezone().isoformat(timespec="seconds"),
-                }
-            )
+            self.send_json(self.application_service.health_status())
             return True
         return False
 

app/backend/jobs/repository.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import json
 from dataclasses import dataclass
-from datetime import datetime
+from datetime import datetime, timedelta
 from typing import Any
 
 from database import ReviewDatabase
@@ -27,9 +27,37 @@ class SQLiteJobRunRepository:
     def start(
         self, job_id: str, idempotency_key: str, output_version: str,
         metadata: dict[str, Any] | None = None,
-    ) -> int:
-        now = datetime.now().astimezone().isoformat(timespec="seconds")
+        stale_after_seconds: int = 0,
+    ) -> int | None:
+        current = datetime.now().astimezone()
+        now = current.isoformat(timespec="seconds")
+        stale_before = (
+            current - timedelta(seconds=max(1, int(stale_after_seconds or 1)))
+        ).isoformat(timespec="seconds")
         with self.database.connect() as connection:
+            # The process-local runner lock cannot protect two server processes.
+            connection.execute("BEGIN IMMEDIATE")
+            connection.execute(
+                """
+                UPDATE job_runs
+                SET status = 'failed', finished_at = ?, error_code = 'StaleRun',
+                    message = 'Previous run exceeded its execution window.'
+                WHERE job_id = ? AND idempotency_key = ? AND status = 'running'
+                  AND started_at < ?
+                """,
+                (now, job_id, idempotency_key, stale_before),
+            )
+            claimed = connection.execute(
+                """
+                SELECT 1 FROM job_runs
+                WHERE job_id = ? AND idempotency_key = ?
+                  AND status IN ('running', 'success')
+                LIMIT 1
+                """,
+                (job_id, idempotency_key),
+            ).fetchone()
+            if claimed:
+                return None
             row = connection.execute(
                 """
                 SELECT COALESCE(MAX(attempt), 0) + 1 AS attempt FROM job_runs

app/backend/jobs/runner.py

@@ -51,8 +51,7 @@ class InProcessJobRunner:
         lock = self._lock(definition.lock_key)
         if not lock.acquire(blocking=False):
             return False
-        self._execute_locked(job_id, idempotency_key, action, metadata, lock)
-        return True
+        return self._execute_locked(job_id, idempotency_key, action, metadata, lock)
 
     def start_scheduler(
         self, callback: Callable[[], None], interval_seconds: float,
@@ -105,13 +104,19 @@ class InProcessJobRunner:
     def _execute_locked(
         self, job_id: str, idempotency_key: str, action: JobAction,
         metadata: dict[str, Any] | None, lock: threading.Lock,
-    ) -> None:
+    ) -> bool:
         definition = self.registry.get(job_id)
         try:
             for attempt in range(1, definition.max_attempts + 1):
                 run_id = self.repository.start(
-                    job_id, idempotency_key, definition.output_version, metadata
+                    job_id,
+                    idempotency_key,
+                    definition.output_version,
+                    metadata,
+                    definition.timeout_seconds,
                 )
+                if run_id is None:
+                    return False
                 started = time.perf_counter()
                 try:
                     result = action()
@@ -119,7 +124,7 @@ class InProcessJobRunner:
                         raise RuntimeError(str(result.get("error") or "Job reported failure"))
                     elapsed_ms = round((time.perf_counter() - started) * 1000)
                     self.repository.finish(run_id, "success", elapsed_ms)
-                    return
+                    return True
                 except Exception as exc:
                     elapsed_ms = round((time.perf_counter() - started) * 1000)
                     self.repository.finish(
@@ -127,7 +132,8 @@ class InProcessJobRunner:
                         type(exc).__name__, str(exc),
                     )
                     if attempt >= definition.max_attempts:
-                        return
+                        return True
+            return True
         finally:
             lock.release()
 

app/config/architecture-inventory.json

@@ -390,7 +390,7 @@
     "/pages/popularity/foundation.css?v=20260806-1",
     "/pages/dragon-tiger/foundation.css?v=20260806-1",
     "/pages/screener/foundation.css?v=20260806-2",
-    "/pages/mentor/foundation.css?v=20260806-2",
+    "/pages/mentor/foundation.css?v=20260807-1",
     "/pages/heaven/foundation.css?v=20260806-2",
     "/pages/review/foundation.css?v=20260806-1"
   ],
@@ -609,16 +609,16 @@
       "bytes": 6983,
       "lines": 146
     },
+    {
+      "path": "backend/application.py",
+      "bytes": 6837,
+      "lines": 180
+    },
     {
       "path": "backend/data/providers/tushare_daily.py",
       "bytes": 6837,
       "lines": 160
     },
-    {
-      "path": "backend/application.py",
-      "bytes": 6751,
-      "lines": 178
-    },
     {
       "path": "backend/features/market/insights_popularity.py",
       "bytes": 6739,
@@ -829,11 +829,6 @@
       "bytes": 1455,
       "lines": 48
     },
-    {
-      "path": "backend/features/system/routes.py",
-      "bytes": 1423,
-      "lines": 40
-    },
     {
       "path": "backend/features/themes/routes.py",
       "bytes": 1337,
@@ -844,6 +839,11 @@
       "bytes": 1195,
       "lines": 30
     },
+    {
+      "path": "backend/features/system/routes.py",
+      "bytes": 1178,
+      "lines": 32
+    },
     {
       "path": "frontend/pages/ladder/page.html",
       "bytes": 1143,

app/frontend/index.html

@@ -37,7 +37,7 @@
   <link rel="stylesheet" href="/pages/popularity/foundation.css?v=20260806-1">
   <link rel="stylesheet" href="/pages/dragon-tiger/foundation.css?v=20260806-1">
   <link rel="stylesheet" href="/pages/screener/foundation.css?v=20260806-2">
-  <link rel="stylesheet" href="/pages/mentor/foundation.css?v=20260806-2">
+  <link rel="stylesheet" href="/pages/mentor/foundation.css?v=20260807-1">
   <link rel="stylesheet" href="/pages/heaven/foundation.css?v=20260806-2">
   <link rel="stylesheet" href="/pages/review/foundation.css?v=20260806-1">
 </head>

app/frontend/pages/mentor/foundation.css

@@ -250,20 +250,20 @@
   align-items: center;
   justify-content: center;
   border: 1px solid var(--mentor-blue-line);
-  border-radius: 50%;
+  border-radius: var(--radius-md);
   background: var(--mentor-blue-soft);
   color: var(--mentor-blue-dark);
   font-size: var(--font-size-card-title);
   font-weight: var(--font-weight-semibold);
 }
 
-#mentorView .mentor-avatar[data-grade="a"] {
+#mentorView :is(.mentor-avatar, .mentor-message-avatar, .mentor-profile-avatar)[data-grade="a"] {
   border-color: var(--market-up);
   background: var(--market-up-soft);
   color: var(--market-up);
 }
 
-#mentorView .mentor-avatar[data-grade="c"] {
+#mentorView :is(.mentor-avatar, .mentor-message-avatar, .mentor-profile-avatar)[data-grade="c"] {
   border-color: var(--market-down);
   background: var(--market-down-soft);
   color: var(--market-down);
@@ -427,61 +427,10 @@
   background: var(--surface-subtle);
 }
 
-#mentorView .mentor-chat-header {
-  height: var(--mentor-pane-header-height);
-  flex: 0 0 var(--mentor-pane-header-height);
-  display: flex;
-  align-items: center;
-  justify-content: space-between;
-  gap: var(--space-12);
-  padding: 0 var(--space-16);
-  border-bottom: 1px solid var(--mentor-line);
-  background: var(--surface);
-}
-
-#mentorView .mentor-chat-identity {
-  min-width: 0;
-  display: flex;
-  align-items: center;
-  gap: var(--space-8);
-}
-
-#mentorView .mentor-chat-identity > div {
-  min-width: 0;
-}
-
-#mentorView .mentor-active-title {
-  min-width: 0;
-  display: flex;
-  align-items: center;
-  gap: var(--space-8);
-}
-
-#mentorView .mentor-active-title h3 {
-  min-width: 0;
-  margin: 0;
-  overflow: hidden;
-  color: var(--mentor-ink);
-  font-size: var(--font-size-card-title);
-  font-weight: var(--font-weight-semibold);
-  letter-spacing: 0;
-  text-overflow: ellipsis;
-  white-space: nowrap;
-}
-
-#mentorView .mentor-active-badges {
-  display: inline-flex;
-  gap: var(--space-4);
-}
-
-#mentorView #activeMentorStatus {
-  margin: var(--space-4) 0 0;
-  color: var(--mentor-faint);
-  font-size: var(--font-size-caption);
-}
-
 #mentorView .mentor-clear-button {
-  flex: 0 0 auto;
+  width: 40px;
+  height: 40px;
+  flex: 0 0 40px;
   color: var(--mentor-sub);
 }
 
@@ -554,7 +503,7 @@
   align-items: center;
   justify-content: center;
   border: 1px solid var(--mentor-line);
-  border-radius: 50%;
+  border-radius: var(--radius-md);
   background: var(--surface);
   color: var(--mentor-sub);
   font-size: var(--font-size-label);
@@ -568,6 +517,7 @@
 }
 
 #mentorView .mentor-message-body {
+  min-width: 0;
   max-width: var(--mentor-message-max-width);
   display: flex;
   flex-direction: column;
@@ -579,6 +529,20 @@
   align-items: flex-end;
 }
 
+#mentorView .mentor-message-stack {
+  min-width: 0;
+  width: 100%;
+  display: flex;
+  flex-direction: column;
+  align-items: flex-start;
+  gap: var(--space-8);
+}
+
+#mentorView .mentor-message-stack > .mentor-message-content {
+  width: fit-content;
+  max-width: 100%;
+}
+
 #mentorView .mentor-message-label {
   color: var(--mentor-faint);
   font-size: var(--font-size-caption);
@@ -618,6 +582,7 @@
 
 #mentorView .mentor-answer-paragraph {
   margin: 0 0 var(--space-8);
+  text-wrap: pretty;
 }
 
 #mentorView .mentor-answer-paragraph:last-child {
@@ -630,6 +595,7 @@
   color: var(--mentor-ink);
   font-size: var(--font-size-body);
   font-weight: var(--font-weight-semibold);
+  text-wrap: balance;
 }
 
 #mentorView .mentor-answer-heading:first-child {
@@ -844,7 +810,7 @@
   align-items: center;
   justify-content: center;
   border: 1px solid var(--mentor-blue-line);
-  border-radius: 50%;
+  border-radius: var(--radius-md);
   background: var(--mentor-blue-soft);
   color: var(--mentor-blue-dark);
   font-size: var(--font-size-metric);
@@ -966,11 +932,16 @@
 }
 
 :root[data-theme="dark"] #mentorView .mentor-message {
-  border-color: var(--line-soft);
-  background: var(--surface-subtle);
+  background: transparent;
   box-shadow: none;
 }
 
+:root[data-theme="dark"] #mentorView .mentor-message.assistant .mentor-message-content {
+  border-color: var(--border);
+  background: var(--surface-muted);
+  color: var(--text-primary);
+}
+
 :root[data-theme="dark"] #mentorView .mentor-message.user .mentor-message-content {
   border-color: var(--blue-line);
   background: var(--action-soft);

app/frontend/pages/mentor/page.html

@@ -33,16 +33,7 @@
         </aside>
 
         <section class="mentor-chat-panel" aria-label="问师对话">
-          <header class="mentor-chat-header">
-            <div class="mentor-chat-identity">
-              <span id="activeMentorAvatar" class="mentor-avatar" aria-hidden="true">师</span>
-              <div>
-                <div class="mentor-active-title"><h3 id="activeMentorName">--</h3><span id="activeMentorBadges" class="mentor-active-badges"></span></div>
-                <p id="activeMentorStatus">思维模型已就绪</p>
-              </div>
-            </div>
-            <button id="clearMentorChatButton" class="icon-button mentor-clear-button" type="button" disabled aria-label="清空当前对话" title="清空对话"><i data-lucide="trash-2"></i></button>
-          </header>
+          <p id="activeMentorStatus" class="visually-hidden" aria-live="polite">思维模型已就绪</p>
           <div id="mentorMessages" class="mentor-messages" aria-live="polite"></div>
           <div id="mentorQuickPrompts" class="mentor-quick-prompts">
             <span class="mentor-prompt-label">开始一个话题</span>
@@ -56,6 +47,7 @@
             <textarea id="mentorQuestion" maxlength="2000" placeholder="输入市场、板块、个股代码或交易问题"></textarea>
             <div class="mentor-composer-actions">
               <span>Enter 发送 · Shift + Enter 换行</span>
+              <button id="clearMentorChatButton" class="icon-button mentor-clear-button" type="button" disabled aria-label="清空当前对话" title="清空对话"><i data-lucide="trash-2"></i></button>
               <button id="stopMentorQuestion" class="button ghost mentor-stop-button" type="button" hidden><i data-lucide="square"></i><span>停止</span></button>
               <button id="sendMentorQuestion" class="button primary mentor-send-button" type="submit"><i data-lucide="send-horizontal"></i><span>发送</span></button>
             </div>

app/frontend/pages/mentor/page.js

@@ -36,14 +36,12 @@ function renderMentorWorkspace() {
   if (!setup) return;
   const selected = setup.mentors.find((item) => item.id === state.selectedMentorId) || null;
   setText("mentorDataDate", `数据日期 ${displayCompactDate(setup.trade_date)}`);
-  setText("activeMentorName", selected?.name || "--");
   setText("mentorProfileName", selected?.name || "--");
   setText("mentorProfileTagline", selected?.tagline || selected?.description || "--");
   setText("mentorProfileSource", selected?.evidence?.label || "公开资料整理");
   setText("mentorProfileDataDate", `行情数据 ${displayCompactDate(setup.trade_date)}`);
-  setText("activeMentorAvatar", mentorAvatarText(selected));
   setText("mentorProfileAvatar", mentorAvatarText(selected));
-  document.querySelector("#activeMentorBadges").innerHTML = selected ? renderMentorBadges(selected, true) : "";
+  document.querySelector("#mentorProfileAvatar").dataset.grade = String(selected?.evidence?.grade || "").toLowerCase();
   document.querySelector("#mentorProfileBadges").innerHTML = selected ? renderMentorBadges(selected, true) : "";
   setText("activeMentorEvidence", selected?.evidence?.note || selected?.description || "--");
   document.querySelector("#activeMentorFocus").innerHTML = (selected?.focus || []).slice(0, 4)
@@ -287,12 +285,14 @@ function renderMentorMessages() {
   } else {
     container.innerHTML = state.mentorMessages.map((message) => `
       <article class="mentor-message ${message.role} ${message.error ? "is-error" : ""}">
-        <span class="mentor-message-avatar" aria-hidden="true">${message.role === "user" ? "我" : escapeHtml(mentorAvatarText(selected))}</span>
+        <span class="mentor-message-avatar" data-grade="${message.role === "assistant" ? escapeHtml(String(selected?.evidence?.grade || "").toLowerCase()) : ""}" aria-hidden="true">${message.role === "user" ? "我" : escapeHtml(mentorAvatarText(selected))}</span>
         <div class="mentor-message-body">
           <div class="mentor-message-label">${message.role === "user" ? "我" : escapeHtml(selected?.name || "问师")}</div>
-          <div class="mentor-message-content">${message.role === "assistant"
-            ? (message.content ? formatMentorAnswer(message.content) : '<p class="mentor-loading-copy">正在读取复盘数据并推演...</p>')
-            : escapeHtml(message.content)}</div>
+          ${message.role === "assistant"
+            ? `<div class="mentor-message-stack">${message.content
+              ? formatMentorAnswer(message.content)
+              : '<div class="mentor-message-content"><p class="mentor-loading-copy">正在读取复盘数据并推演...</p></div>'}</div>`
+            : `<div class="mentor-message-content">${escapeHtml(message.content)}</div>`}
           ${message.streaming ? '<span class="assistant-stream-caret" aria-hidden="true"></span>' : ""}
           ${renderMentorFollowUps(message)}
           ${message.meta && !message.streaming ? `<small>${escapeHtml(message.meta)}</small>` : ""}
@@ -478,12 +478,14 @@ function hideMentorNotice() {
 }
 
 function formatMentorAnswer(content) {
-  const blocks = [];
+  const sections = [[]];
+  let currentSection = sections[0];
+  let headingCount = 0;
   let listType = "";
   let listItems = [];
   const flushList = () => {
     if (!listItems.length) return;
-    blocks.push(`<${listType} class="mentor-answer-list">${listItems.map((item) => `<li>${item}</li>`).join("")}</${listType}>`);
+    currentSection.push(`<${listType} class="mentor-answer-list">${listItems.map((item) => `<li>${item}</li>`).join("")}</${listType}>`);
     listItems = [];
     listType = "";
   };
@@ -493,18 +495,23 @@ function formatMentorAnswer(content) {
       flushList();
       return;
     }
-    const heading = line.match(/^#{1,3}\s+(.+)$/);
+    const heading = mentorAnswerHeading(line);
     const bullet = line.match(/^[-*]\s+(.+)$/);
     const ordered = line.match(/^\d+[.、]\s*(.+)$/);
     if (heading) {
       flushList();
-      blocks.push(`<strong class="mentor-answer-heading">${formatMentorInline(escapeHtml(heading[1]))}</strong>`);
+      if (currentSection.length) {
+        currentSection = [];
+        sections.push(currentSection);
+      }
+      headingCount += 1;
+      currentSection.push(`<strong class="mentor-answer-heading">${formatMentorInline(escapeHtml(heading))}</strong>`);
     } else if (/^-{3,}$/.test(line)) {
       flushList();
-      blocks.push('<span class="mentor-answer-rule"></span>');
+      currentSection.push('<span class="mentor-answer-rule"></span>');
     } else if (line.startsWith("> ")) {
       flushList();
-      blocks.push(`<span class="mentor-answer-quote">${formatMentorInline(escapeHtml(line.slice(2)))}</span>`);
+      currentSection.push(`<span class="mentor-answer-quote">${formatMentorInline(escapeHtml(line.slice(2)))}</span>`);
     } else if (bullet || ordered) {
       const nextType = bullet ? "ul" : "ol";
       if (listType && listType !== nextType) flushList();
@@ -512,11 +519,27 @@ function formatMentorAnswer(content) {
       listItems.push(formatMentorInline(escapeHtml((bullet || ordered)[1])));
     } else {
       flushList();
-      blocks.push(`<p class="mentor-answer-paragraph">${formatMentorInline(escapeHtml(line))}</p>`);
+      currentSection.push(`<p class="mentor-answer-paragraph">${formatMentorInline(escapeHtml(line))}</p>`);
     }
   });
   flushList();
-  return blocks.join("");
+  const populatedSections = sections.filter((section) => section.length);
+  if (headingCount < 2) {
+    return `<div class="mentor-message-content">${populatedSections.flat().join("")}</div>`;
+  }
+  return populatedSections.map((section) => (
+    `<section class="mentor-message-content mentor-answer-bubble">${section.join("")}</section>`
+  )).join("");
+}
+
+function mentorAnswerHeading(line) {
+  const markdownHeading = line.match(/^#{1,3}\s+(.+)$/);
+  if (markdownHeading) return markdownHeading[1].trim();
+  const boldHeading = line.match(/^\*\*([^*]+)\*\*$/);
+  if (!boldHeading) return "";
+  const title = boldHeading[1].trim();
+  if (!title || title.length > 32 || /[。！？!?；;：:]$/.test(title)) return "";
+  return title;
 }
 
 function formatMentorInline(content) {

app/frontend/shared/tokens.css

@@ -222,8 +222,8 @@
   --mentor-directory-width: 280px;
   --mentor-profile-width: 272px;
   --mentor-pane-header-height: 58px;
-  --mentor-avatar-size: 38px;
-  --mentor-profile-avatar-size: 68px;
+  --mentor-avatar-size: 46px;
+  --mentor-profile-avatar-size: 80px;
   --mentor-composer-min-height: 94px;
   --mentor-message-max-width: 82%;
 

app/tests/e2e/app-shell.spec.js

@@ -489,8 +489,8 @@ async function mockApplication(page, authSession = session(), options = {}) {
         status: 200,
         contentType: "application/x-ndjson; charset=utf-8",
         body: [
-          JSON.stringify({ type: "delta", content: "## 判断\n先看市场结构。\n\n" }),
-          JSON.stringify({ type: "delta", content: "- 等待确认\n- 控制仓位" }),
+          JSON.stringify({ type: "delta", content: "**判断**\n先看市场结构。\n\n" }),
+          JSON.stringify({ type: "delta", content: "**操作**\n- 等待确认\n- 控制仓位" }),
           JSON.stringify({
             type: "meta",
             data_trade_date: "20260722",
@@ -2818,9 +2818,24 @@ test("mentor directory exposes evidence filters and private owner metadata", asy
   await page.locator('[data-mentor-grade="B"]').click();
   await expect(page.locator("#mentorList .mentor-option")).toHaveCount(7);
   await page.locator('#mentorList [data-mentor-id="source-b"]').click();
-  await expect(page.locator("#activeMentorName")).toHaveText("多源老师");
-  await expect(page.locator("#activeMentorBadges")).toHaveText("B");
+  await expect(page.locator("#mentorProfileName")).toHaveText("多源老师");
+  await expect(page.locator("#mentorProfileBadges")).toHaveText("B");
   await expect(page.locator("#activeMentorEvidence")).toHaveText("公开访谈与多源材料");
+  await expect(page.locator("#mentorView .mentor-chat-header")).toHaveCount(0);
+  await expect(page.locator("#mentorChatForm #clearMentorChatButton")).toBeVisible();
+  const avatarGeometry = await page.evaluate(() => {
+    const directoryAvatar = document.querySelector("#mentorList .mentor-option.active .mentor-avatar");
+    const profileAvatar = document.querySelector("#mentorProfileAvatar");
+    return {
+      directoryWidth: directoryAvatar.getBoundingClientRect().width,
+      directoryRadius: getComputedStyle(directoryAvatar).borderRadius,
+      profileWidth: profileAvatar.getBoundingClientRect().width,
+      profileRadius: getComputedStyle(profileAvatar).borderRadius,
+    };
+  });
+  expect(avatarGeometry.directoryWidth).toBeGreaterThanOrEqual(46);
+  expect(avatarGeometry.profileWidth).toBeGreaterThan(avatarGeometry.directoryWidth);
+  expect(avatarGeometry.profileRadius).toBe(avatarGeometry.directoryRadius);
   const mentorLibrary = await page.locator("#mentorView .mentor-sidebar").boundingBox();
   const mentorChat = await page.locator("#mentorView .mentor-chat-panel").boundingBox();
   const mentorProfile = await page.locator("#mentorView .mentor-profile-panel").boundingBox();
@@ -2864,6 +2879,8 @@ test("mentor pins, custom order and streamed replies work together", async ({ pa
   await page.locator("#sendMentorQuestion").click();
   const answer = page.locator("#mentorMessages .mentor-message.assistant").last();
   await expect(answer).toContainText("先看市场结构。");
+  await expect(answer.locator(".mentor-message-content")).toHaveCount(2);
+  await expect(answer.locator(".mentor-answer-heading")).toHaveCount(2);
   await expect(answer.locator(".mentor-answer-list li")).toHaveCount(2);
   await expect(answer.locator("br")).toHaveCount(0);
   await expect(page.locator("#mentorMessages .assistant-stream-caret")).toHaveCount(0);
@@ -2874,6 +2891,7 @@ test("mentor pins, custom order and streamed replies work together", async ({ pa
   await expect(page.locator("#mentorQuestion")).toHaveValue("哪些信号代表确认？");
   await expect(page.locator("#mentorMessages .mentor-message")).toHaveCount(messageCount);
   await page.locator("#themeToggle").click();
+  await expect(page.locator("html")).not.toHaveClass(/theme-switching/);
   const userMessage = page.locator("#mentorMessages .mentor-message.user");
   const darkUserMessageStyle = await userMessage.evaluate((element) => ({
     background: getComputedStyle(element).backgroundColor,
@@ -2888,22 +2906,25 @@ test("mentor pins, custom order and streamed replies work together", async ({ pa
   const darkMessageStyle = await answer.evaluate((element) => {
     const style = getComputedStyle(element);
     const content = element.querySelector(".mentor-message-content");
+    const contentStyle = getComputedStyle(content);
     const heading = element.querySelector(".mentor-answer-heading");
     const label = element.querySelector(".mentor-message-label");
     const meta = element.querySelector("small");
     return {
       background: style.backgroundColor,
-      border: style.borderTopColor,
       shadow: style.boxShadow,
-      contentColor: getComputedStyle(content).color,
+      contentBackground: contentStyle.backgroundColor,
+      contentBorder: contentStyle.borderTopColor,
+      contentColor: contentStyle.color,
       headingColor: getComputedStyle(heading).color,
       labelColor: getComputedStyle(label).color,
       metaColor: getComputedStyle(meta).color,
     };
   });
-  expect(darkMessageStyle.background).not.toBe("rgb(255, 255, 255)");
-  expect(darkMessageStyle.border).not.toBe("rgb(255, 255, 255)");
+  expect(darkMessageStyle.background).toBe("rgba(0, 0, 0, 0)");
   expect(darkMessageStyle.shadow).toBe("none");
+  expect(darkMessageStyle.contentBackground).toBe("rgb(32, 36, 40)");
+  expect(darkMessageStyle.contentBorder).toBe("rgb(52, 58, 64)");
   expect(darkMessageStyle.contentColor).toBe("rgb(232, 234, 237)");
   expect(darkMessageStyle.headingColor).toBe("rgb(232, 234, 237)");
   expect(darkMessageStyle.labelColor).toBe("rgb(127, 137, 147)");

app/tests/test_frontend_contract.py

@@ -279,14 +279,19 @@ class FrontendContractTests(unittest.TestCase):
         self.assertIn("context.fillStyle = palette.axis;", chart)
         self.assertNotIn('context.fillStyle = "#6c7983";', chart)
 
-    def test_dark_mentor_tokens_and_sentiment_bottom_clearance_are_defined(self):
+    def test_dark_mentor_answer_bubble_and_sentiment_bottom_clearance_are_defined(self):
         self.assertIn(":root[data-theme=\"dark\"] #mentorView {", self.mentor_styles)
         self.assertIn("--mentor-ink: var(--text-primary);", self.mentor_styles)
         self.assertIn("--mentor-sub: var(--text-secondary);", self.mentor_styles)
         self.assertIn(":root[data-theme=\"dark\"] #mentorView .mentor-message {", self.mentor_styles)
-        self.assertIn("border-color: var(--line-soft);", self.mentor_styles)
-        self.assertIn("background: var(--surface-subtle);", self.mentor_styles)
+        self.assertIn("background: transparent;", self.mentor_styles)
         self.assertIn("box-shadow: none;", self.mentor_styles)
+        self.assertIn(
+            ':root[data-theme="dark"] #mentorView .mentor-message.assistant .mentor-message-content {',
+            self.mentor_styles,
+        )
+        self.assertIn("border-color: var(--border);", self.mentor_styles)
+        self.assertIn("background: var(--surface-muted);", self.mentor_styles)
         self.assertIn("#sentimentCycleView .sentiment-history-frame {", self.sentiment_styles)
         self.assertIn("margin-bottom: var(--card-gap);", self.sentiment_styles)
         self.assertIn("padding-bottom: var(--card-gap);", self.sentiment_styles)

app/tests/test_job_runner.py

@@ -59,6 +59,28 @@ class JobRunnerTests(unittest.TestCase):
         release.set()
         self.assertTrue(self.runner.wait_for_idle())
 
+    def test_database_claim_rejects_the_same_job_from_another_runner(self) -> None:
+        other_runner = InProcessJobRunner(JobRegistry.load(), self.repository)
+        entered = threading.Event()
+        release = threading.Event()
+        calls = []
+
+        def wait() -> None:
+            calls.append("first")
+            entered.set()
+            release.wait(2)
+
+        self.assertTrue(self.runner.submit("screener.automatic", "shared-key", wait))
+        self.assertTrue(entered.wait(1))
+        self.assertFalse(
+            other_runner.run_inline(
+                "screener.automatic", "shared-key", lambda: calls.append("second")
+            )
+        )
+        release.set()
+        self.assertTrue(self.runner.wait_for_idle())
+        self.assertEqual(calls, ["first"])
+
     def test_failed_status_payload_is_recorded_as_failure(self) -> None:
         self.assertTrue(
             self.runner.run_inline(

app/tests/test_system_health.py

@@ -0,0 +1,136 @@
+from __future__ import annotations
+
+import json
+import unittest
+from types import SimpleNamespace
+
+from backend.features.system.health import HealthServiceMixin
+from backend.features.system.routes import SystemRoutesMixin
+
+
+class _Connection:
+    def __enter__(self):
+        return self
+
+    def __exit__(self, *_args):
+        return None
+
+    def execute(self, _query: str):
+        return self
+
+    def fetchone(self):
+        return (1,)
+
+
+class _Database:
+    def connect(self):
+        return _Connection()
+
+    def status(self):
+        return {
+            "database": "secret-review.db",
+            "snapshot_dates": 31,
+            "updated_at": "2026-08-07T11:34:55+08:00",
+            "last_sync": {
+                "id": 991,
+                "trade_date": "20260807",
+                "source": "tushare",
+                "status": "success",
+                "finished_at": "2026-08-07T11:34:55+08:00",
+                "message": "https://provider.invalid?token=secret",
+            },
+        }
+
+
+class _Service(HealthServiceMixin):
+    def __init__(self):
+        self.database = _Database()
+        self.jobs = SimpleNamespace(
+            repository=SimpleNamespace(
+                recent=lambda _limit: [
+                    {
+                        "id": 77,
+                        "status": "success",
+                        "finished_at": "2026-08-07T11:34:55+08:00",
+                        "message": "secret upstream response",
+                    }
+                ]
+            )
+        )
+        self._system_credentials = {
+            "tushare_token": "secret-token",
+            "primary_model_id": "primary-id",
+            "fallback_model_id": "fallback-id",
+        }
+
+    @property
+    def configured(self):
+        return bool(self._system_credentials.get("tushare_token"))
+
+    def _platform_llm_profile(self):
+        return {
+            "primary": {
+                "api_key": "secret-primary-key",
+                "base_url": "https://models.invalid/v1",
+                "model": "secret-primary-model",
+            },
+            "fallback": {
+                "api_key": "secret-fallback-key",
+                "base_url": "https://models.invalid/v1",
+                "model": "secret-fallback-model",
+            },
+        }
+
+    @staticmethod
+    def _profile_configured(profile):
+        return all(profile.get(key) for key in ("api_key", "base_url", "model"))
+
+
+class SystemHealthTests(unittest.TestCase):
+    def test_public_route_uses_the_service_health_contract(self):
+        handler = SystemRoutesMixin()
+        expected = {"ok": True, "components": {"process": {"status": "ready"}}}
+        handler.application_service = SimpleNamespace(health_status=lambda: expected)
+        responses = []
+        handler.send_json = responses.append
+
+        handled = handler._handle_system_public_get(SimpleNamespace(path="/api/health"))
+
+        self.assertTrue(handled)
+        self.assertEqual(responses, [expected])
+
+    def test_health_distinguishes_runtime_components(self):
+        result = _Service().health_status()
+
+        self.assertTrue(result["ok"])
+        self.assertEqual(result["status"], "ready")
+        self.assertEqual(
+            set(result["components"]),
+            {"process", "database", "data_sources", "jobs", "models"},
+        )
+        self.assertEqual(result["components"]["data_sources"]["latest_trade_date"], "20260807")
+        self.assertEqual(result["components"]["models"]["primary"], "ready")
+        self.assertEqual(result["components"]["models"]["fallback"], "ready")
+
+    def test_public_health_never_exposes_engineering_or_secret_fields(self):
+        payload = json.dumps(_Service().health_status(), ensure_ascii=False).lower()
+
+        for forbidden in (
+            "tushare",
+            "ifind",
+            "secret",
+            "token",
+            "https://",
+            ".db",
+            "primary-id",
+            "fallback-id",
+            "model",
+        ):
+            if forbidden == "model":
+                self.assertNotIn("secret-primary-model", payload)
+            else:
+                self.assertNotIn(forbidden, payload)
+
+
+if __name__ == "__main__":
+    unittest.main()