fix(codex-app): 修复假忙/假闲 + Riff 关停/PM2 恢复

src/adapters/backend/herdr-backend.ts

@@ -136,6 +136,7 @@ export class HerdrBackend implements SessionBackend {
   private lastText = '';
   private exited = false;
   private started = false;
+  private actuallyReattached = false;
   private cols = 200;
   private rows = 50;
   private agentProbeFailures = 0;
@@ -212,7 +213,7 @@ export class HerdrBackend implements SessionBackend {
   }
 
   get isReattach(): boolean {
-    return this.opts.isReattach ?? false;
+    return this.actuallyReattached;
   }
 
   spawn(bin: string, args: string[], opts: SpawnOpts): void {
@@ -245,6 +246,7 @@ export class HerdrBackend implements SessionBackend {
 
     const external = this.opts.externalTarget;
     if (external) {
+      this.actuallyReattached = false;
       this.paneId = external.paneId ?? external.target;
     } else {
       // Reuse an existing `botmux` agent ONLY when we're genuinely re-attaching
@@ -255,10 +257,12 @@ export class HerdrBackend implements SessionBackend {
       // row from persisted metadata, and reuse would skip `agent start` so the
       // new command never ran. killSession() now deletes that metadata, but we
       // also gate reuse on isReattach so a stale row can never be adopted.
-      const existing = this.isReattach ? this.getAgent() : undefined;
+      const existing = this.opts.isReattach ? this.getAgent() : undefined;
       if (existing) {
+        this.actuallyReattached = true;
         this.paneId = existing.pane_id;
       } else {
+        this.actuallyReattached = false;
         const started = jsonCommand(herdrSessionArgs(this.sessionName, [
           'agent', 'start', this.agentName,
           '--cwd', opts.cwd,
@@ -278,25 +282,31 @@ export class HerdrBackend implements SessionBackend {
     //   - Re-attach / external adopt: snapshot the current screen so we only
     //     stream new deltas. Worker.ts explicitly seeds the initial screen
     //     via captureCurrentScreen() in those paths.
-    this.lastText = (this.isReattach || this.opts.externalTarget) ? this.readRecentAnsi() : '';
+    this.lastText = (this.actuallyReattached || this.opts.externalTarget) ? this.readRecentAnsi() : '';
     this.startPolling();
     this.startStatusWatcher();
   }
 
-  write(data: string): void {
-    if (this.exited) return;
+  write(data: string): boolean {
+    if (this.exited) return false;
     const target = this.paneId ?? this.agentName;
-    runHerdr(herdrSessionArgs(this.sessionName, ['pane', 'send-text', target, data]), { timeout: 5000 });
+    return runHerdr(
+      herdrSessionArgs(this.sessionName, ['pane', 'send-text', target, data]),
+      { timeout: 5000 },
+    );
   }
 
-  sendText(text: string): void {
-    this.write(text);
+  sendText(text: string): boolean {
+    return this.write(text);
   }
 
-  sendSpecialKeys(...keys: string[]): void {
-    if (this.exited) return;
+  sendSpecialKeys(...keys: string[]): boolean {
+    if (this.exited) return false;
     const target = this.paneId ?? this.agentName;
-    runHerdr(herdrSessionArgs(this.sessionName, ['pane', 'send-keys', target, ...keys]), { timeout: 5000 });
+    return runHerdr(
+      herdrSessionArgs(this.sessionName, ['pane', 'send-keys', target, ...keys]),
+      { timeout: 5000 },
+    );
   }
 
   pasteText(text: string): void {

src/adapters/backend/pty-backend.ts

@@ -45,8 +45,10 @@ export class PtyBackend implements SessionBackend {
     logger.debug(`[pty] spawned pid=${this.process.pid}`);
   }
 
-  write(data: string): void {
-    this.process?.write(data);
+  write(data: string): boolean {
+    if (!this.process) return false;
+    this.process.write(data);
+    return true;
   }
 
   resize(cols: number, rows: number): void {