fix: close stdin on spawned processes to prevent hanging

[tuannvm]

Summary

Fixes #153

When codex exec is spawned with stdio: ['pipe', 'pipe', 'pipe'], it waits for stdin EOF that never arrives, causing the subprocess to hang indefinitely.

Changes

• Added child.stdin.end() immediately after spawn in both executeCommand() and executeCommandStreaming() in src/utils/command.ts

Testing

• Build passes (npm run build)
• All 76 tests pass

Summary by CodeRabbit

• Bug Fixes
  • Spawned subprocesses now have their stdin closed after creation, ensuring command executions reliably complete when input ends; no other runtime outputs or behaviors changed.
• Chores
  • Removed an automated code-review GitHub Actions workflow previously running on pull requests.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: d2590e29-b358-4a4b-8a7a-6f6b39c80894

📥 Commits

Reviewing files that changed from the base of the PR and between ee759e7 and b9f9bb9.

⛔ Files ignored due to path filters (1)

• package-lock.json is excluded by !**/package-lock.json

📒 Files selected for processing (1)

• .github/workflows/cursor.yml

💤 Files with no reviewable changes (1)

• .github/workflows/cursor.yml

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Walkthrough

The PR closes the spawned child process stdin by calling child.stdin?.end() in both executeCommand and executeCommandStreaming, and removes the .github/workflows/cursor.yml GitHub Actions workflow. No function signatures or public declarations were changed.

Changes

Cohort / File(s)	Summary
Process stdin closure src/utils/command.ts	After each spawn(...) call in executeCommand and executeCommandStreaming, call child.stdin?.end() so subprocesses receive EOF on stdin and won't hang waiting for input.
Workflow removal .github/workflows/cursor.yml	Deleted the "Cursor Code Review" GitHub Actions workflow (entire file removed).

Sequence Diagram(s)

sequenceDiagram
    participant Caller
    participant CommandUtil
    participant ChildProcess
    Caller->>CommandUtil: executeCommand(...) / executeCommandStreaming(...)
    CommandUtil->>ChildProcess: spawn(file, args, stdio: ['pipe','pipe','pipe'])
    CommandUtil->>ChildProcess: child.stdin?.end()  -- send EOF on stdin
    ChildProcess-->>CommandUtil: stdout / stderr streams
    ChildProcess-->>CommandUtil: exit / close
    CommandUtil-->>Caller: return result / streamed output

Loading

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• fix: set spawn cwd for workingDirectory to work around codex -C bug #138 — Modifies executeCommand/executeCommandStreaming spawn usage and options; closely related to stdin/spawn changes.
• Fix/review command and stderr handling #100 — Also changes executeCommand/executeCommandStreaming logic (success checks and stderr handling); relevant to the same area of code.

Poem

🐰 I closed the little pipe with care,
No more waiting in the midnight air.
EOF whispered, the command set free,
No more hangs — hop, skip, and flee! 🥕

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Out of Scope Changes check	⚠️ Warning	The deletion of .github/workflows/cursor.yml is unrelated to issue #153 and appears to be an out-of-scope change not mentioned in the PR objectives.	Remove the workflow file deletion or explain in the PR description why this change is necessary and related to fixing the stdin hanging issue.
Docstring Coverage	⚠️ Warning	Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: closing stdin on spawned processes to prevent hanging, which directly addresses the fix for issue #153.
Linked Issues check	✅ Passed	The PR implements the primary fix from issue #153 by calling child.stdin.end() in both executeCommand() and executeCommandStreaming() as required.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch worktree-issues-153

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