fix(tmux): address review feedback for split/defer reliability

src/features/tmux-subagent/grid-planning.ts

@@ -30,6 +30,9 @@ function resolveMinPaneWidth(options?: CapacityOptions): number {
 	if (typeof options === "number") {
 		return Math.max(1, options)
 	}
+	if (options && typeof options.agentPaneWidth === "number") {
+		return Math.max(1, options.agentPaneWidth)
+	}
 	return MIN_PANE_WIDTH
 }
 

src/features/tmux-subagent/manager.ts

@@ -58,6 +58,7 @@ export class TmuxSessionManager {
   private deferredSessions = new Map<string, DeferredSession>()
   private deferredQueue: string[] = []
   private deferredAttachInterval?: ReturnType<typeof setInterval>
+  private deferredAttachTickScheduled = false
   private deps: TmuxUtilDeps
   private pollingManager: TmuxPollingManager
   constructor(ctx: PluginInput, tmuxConfig: TmuxConfig, deps: TmuxUtilDeps = defaultTmuxDeps) {
@@ -130,8 +131,14 @@ export class TmuxSessionManager {
   private startDeferredAttachLoop(): void {
     if (this.deferredAttachInterval) return
     this.deferredAttachInterval = setInterval(() => {
+      if (this.deferredAttachTickScheduled) return
+      this.deferredAttachTickScheduled = true
       void this.enqueueSpawn(async () => {
-        await this.tryAttachDeferredSession()
+        try {
+          await this.tryAttachDeferredSession()
+        } finally {
+          this.deferredAttachTickScheduled = false
+        }
       })
     }, POLL_INTERVAL_BACKGROUND_MS)
     log("[tmux-session-manager] deferred attach polling started", {
@@ -143,6 +150,7 @@ export class TmuxSessionManager {
     if (!this.deferredAttachInterval) return
     clearInterval(this.deferredAttachInterval)
     this.deferredAttachInterval = undefined
+    this.deferredAttachTickScheduled = false
     log("[tmux-session-manager] deferred attach polling stopped")
   }
 

src/features/tmux-subagent/pane-state-querier.ts

@@ -14,7 +14,7 @@ export async function queryWindowState(sourcePaneId: string): Promise<WindowStat
       "-t",
       sourcePaneId,
       "-F",
-      "#{pane_id}\t#{pane_width}\t#{pane_height}\t#{pane_left}\t#{pane_top}\t#{pane_title}\t#{pane_active}\t#{window_width}\t#{window_height}",
+			"#{pane_id}\t#{pane_width}\t#{pane_height}\t#{pane_left}\t#{pane_top}\t#{pane_active}\t#{window_width}\t#{window_height}\t#{pane_title}",
     ],
     { stdout: "pipe", stderr: "pipe" }
   )
@@ -35,7 +35,11 @@ export async function queryWindowState(sourcePaneId: string): Promise<WindowStat
   const panes: TmuxPaneInfo[] = []
 
   for (const line of lines) {
-    const [paneId, widthStr, heightStr, leftStr, topStr, title, activeStr, windowWidthStr, windowHeightStr] = line.split("\t")
+		const fields = line.split("\t")
+		if (fields.length < 9) continue
+
+		const [paneId, widthStr, heightStr, leftStr, topStr, activeStr, windowWidthStr, windowHeightStr] = fields
+		const title = fields.slice(8).join("\t")
     const width = parseInt(widthStr, 10)
     const height = parseInt(heightStr, 10)
     const left = parseInt(leftStr, 10)

src/features/tmux-subagent/types.ts

@@ -43,7 +43,7 @@ export interface SpawnDecision {
 }
 
 export interface CapacityConfig {
-	layout?: string
+  layout?: string
   mainPaneSize?: number
   mainPaneMinWidth: number
   agentPaneWidth: number