Add --all approve flag and fix Codex review timeouts

- Add --all flag to approve all queued commits at once
- Refactor Codex app-server I/O to use channel-based reading
  with dedicated reader thread for reliable timeout detection
- Add idle and hard deadlines for review operations
- Handle review/completed message for early exit
- Improve bun test gate execution error handling

Author: nikivdev

.ai/todos/todos.json

@@ -37,5 +37,15 @@
     "note": "Source: flow review\nCommit: 311eea95538dfc9c87d6b2e5f98a7890a0803465\nModel: gpt-5.1-codex-max\nReview summary: Codex review timed out after 300s\n\nRe-run review: review timed out for commit 311eea9",
     "session": null,
     "external_ref": "flow-review-issue-888c93874436"
+  },
+  {
+    "id": "1d57246970fd4297b5bba7e2bb1c4ce3",
+    "title": "Re-run review: review timed out for commit 2177d65",
+    "status": "pending",
+    "created_at": "2026-02-14T16:21:46.629833+00:00",
+    "updated_at": null,
+    "note": "Source: flow review\nCommit: 2177d65d15ebc28e13152b31413aa8263e8f8f71\nModel: gpt-5.1-codex-max\nReview summary: Codex review timed out after 300s\n\nRe-run review: review timed out for commit 2177d65",
+    "session": null,
+    "external_ref": "flow-review-issue-e11c99ffe84e"
   }
 ]

src/cli.rs

@@ -1496,6 +1496,9 @@ pub enum CommitQueueAction {
     },
     /// Approve a queued commit and push it.
     Approve {
+        /// Approve all queued commits on the current branch (push once).
+        #[arg(long)]
+        all: bool,
         /// Commit hash (short or full). Defaults to HEAD when omitted.
         hash: Option<String>,
         /// If hash is not queued but exists in git history, queue it first.