chore(align): sync Git with running container as authoritative source

One-time alignment to close drift between the running container
(qihu-aiflow / image qihuaiflow:with-deps) and this Git repository.
Container hotfixes previously persisted only via `docker commit` are now
captured in Git so Git becomes the single source of truth.

Backend:
- chat_service.py: accumulated fixes incl. EigenFlux README guidance
- chat_context.py / chat_media.py: URL/web-repo context injection
- api/url_reader.py: NEW SSRF-safe web/README reader (Issue #725)
- skills_admin.py & Skills.tsx: 14-scene capability unification
- pgvector_search.py, orchestrator.py, platform_knowledge.py,
  market.py, admin/models.py: drift sync

Frontend:
- ChatPage.tsx: collapsible AI think/act block (Issue #724)
- MarketPage / EvolutionDashboard / TokenDashboard styling sync

Migrations:
- 018_normalize_marketapp_scene.sql: fixed capability allowlist
  (prevents capability wipe on restart)

Alignment performed 2026-07-23 05:42:47. No deletions; secrets/venv/node_modules/
caches were not touched (tracked-source-only copy).

backend/python/app/platform_knowledge.py

@@ -81,6 +81,41 @@ PLATFORM_KNOWLEDGE = """# 七虎AI平台能力全览
 """
 
 
-def get_platform_knowledge() -> str:
-    """获取平台全功能知识库文本，注入到AI对话系统提示中"""
-    return PLATFORM_KNOWLEDGE
+def get_platform_knowledge(db=None, user_id=None) -> str:
+    """获取平台全功能知识库文本，注入到AI对话系统提示中。
+
+    若传入 db，则动态追加当前平台已上线的官方技能目录
+    （source=official 且 status=published），确保管理员/前台导入或下架技能后，
+    AI 能及时感知并使用「平台自身已有内容」，而非停留在陈旧硬编码清单（见 #712）。
+    任何异常均安全回退到静态 PLATFORM_KNOWLEDGE。
+    """
+    if db is None:
+        return PLATFORM_KNOWLEDGE
+    try:
+        from .models import MarketApp
+
+        apps = (
+            db.query(MarketApp)
+            .filter(MarketApp.source == "official", MarketApp.status == "published")
+            .order_by(MarketApp.capability, MarketApp.name)
+            .all()
+        )
+        if not apps:
+            return PLATFORM_KNOWLEDGE
+
+        lines = [
+            "",
+            "## 平台已上线技能（官方，优先推荐）",
+            "以下为平台当前已发布上线的技能/应用，回答用户相关问题时**优先推荐使用**这些平台能力：",
+        ]
+        for a in apps:
+            name = getattr(a, "name", None) or "未命名"
+            cap = getattr(a, "capability", None) or getattr(a, "category", None) or "通用"
+            desc = (getattr(a, "description", "") or "").strip().replace("\n", " ")
+            if len(desc) > 60:
+                desc = desc[:60] + "…"
+            lines.append(f"- **{name}**（{cap}）: {desc}")
+        return PLATFORM_KNOWLEDGE + "\n" + "\n".join(lines)
+    except Exception as e:
+        logger.warning(f"[platform_knowledge] 动态构建失败，回退静态知识库: {e}")
+        return PLATFORM_KNOWLEDGE