收口 MNote P0 P1 P2 审查尾项

- 归档 OnlyOffice live bridge、Page AI、mindmap、design governance 与相关 bug 条目
- 补齐 MinerU OCR 后端 runtime 合同与 smoke/test 基线
- 收口 ChatOnly/Doubao、ObjectIdentity、Page Aggregate compat 与 runtime owner 文档口径

验证：
- cargo test --manifest-path rust/Cargo.toml -p mnote-web local_ocr -- --test-threads=1
- cargo test --manifest-path rust/Cargo.toml -p mnote-web onlyoffice_bridge -- --test-threads=1
- git diff --check
- git diff --cached --check
- codegraph index . --force && codegraph status .
- codegraph sync . && codegraph status .

rust/crates/control-plane/src/migrations.rs

@@ -30,6 +30,14 @@ const MIGRATIONS: &[(&str, &str)] = &[
         "v6-navigation-recent",
         include_str!("../migrations/006-navigation-recent.sql"),
     ),
+    (
+        "v7-ai-agent-profile-policy",
+        include_str!("../migrations/007-ai-agent-profile-policy.sql"),
+    ),
+    (
+        "v8-ai-external-conversation-bindings",
+        include_str!("../migrations/008-ai-external-conversation-bindings.sql"),
+    ),
 ];
 
 /// Create the `_migrations` meta-table if it does not exist.
@@ -113,6 +121,9 @@ mod tests {
             "sidebar_shortcuts",
             "user_ui_preferences",
             "user_navigation_recent",
+            "ai_agent_profiles",
+            "ai_agent_profile_grants",
+            "ai_external_conversation_bindings",
         ] {
             assert!(table_exists(&conn, table), "table {table} should exist");
         }