重构: F-09批2 调用方迁移per-conv(双写桥接共存期)

- agentic.rs: GeneratingGuard加conv_id + 三处退出校验改conv存在性(决策e) + stop_flag/notify/messages/iteration per-conv + try_continue加conv_id参数
- commands.rs: IPC写路径双写桥接(per_conv新真相源+顶层双写,批4删) + ai_is_generating读per_conv fallback顶层
- audit/conversation/title/knowledge_inject/lib.rs: per_conv读写迁移
- conv()/conv_read()去allow(批2有调用方)
共存期双写: per_conv主+顶层双写兼容批4前IPC,批4签名改后删顶层
主代兜底: cargo check --workspace 0 + test 96 passed + grep三处退出/GeneratingGuard/双写印证

src-tauri/src/lib.rs

@@ -40,9 +40,19 @@ pub fn run() {
                 let app_h = app_handle.clone();
                 tauri::async_runtime::spawn(async move {
                     let mut session = session_arc.lock().await;
-                    let was_generating = session.generating;
+                    // F-260616-09 B 批2:读 active conv 的 per_conv.generating + 双写复位。
+                    //   conv_id 来源:active_conversation_id(HMR 重连场景的当前展示 conv)。
                     let conv_id = session.active_conversation_id.clone();
+                    let active_for_check = conv_id.clone().unwrap_or_default();
+                    let was_generating = if active_for_check.is_empty() {
+                        session.generating
+                    } else {
+                        session.conv_read(&active_for_check).map(|c| c.generating).unwrap_or(session.generating)
+                    };
                     if was_generating {
+                        if !active_for_check.is_empty() {
+                            session.conv(&active_for_check).generating = false;
+                        }
                         session.generating = false;
                         session.pending_approvals.clear();
                         drop(session);