fix: address 5 edge cases from review-work findings

- C3: include command args in auto-slash-command dedup key
- H2: track completed task summaries for ALL COMPLETE message
- H9: increment tmux close retry count on re-mark
- H8: detect stale MCP connections after disconnect+reconnect race
- H8: guard disconnectedSessions growth for non-MCP sessions
- C1: await tmux cleanup in plugin dispose lifecycle

src/index.ts

@@ -74,6 +74,7 @@ const OhMyOpenCodePlugin: Plugin = async (ctx) => {
   const dispose = createPluginDispose({
     backgroundManager: managers.backgroundManager,
     skillMcpManager: managers.skillMcpManager,
+    tmuxSessionManager: managers.tmuxSessionManager,
     disposeHooks: hooks.disposeHooks,
   })