fix(ci): drop review requirement from Mergify for single-maintainer workflow

[jeremyeder]

Summary

• Remove approval gates from merge queue — PRs merge on green CI without human review
• Remove large-pr queue (no tiered review needed with one maintainer)
• Keep CI gates, changes-requested block, dependabot auto-approval, auto-rebase

This is the first PR that should auto-merge itself once CI passes.

Test plan

• This PR auto-merges when CI passes (no approval needed)
• Requesting changes on a subsequent PR blocks the merge

🤖 Generated with Claude Code

Summary by CodeRabbit

• Chores

  • Simplified pull request queueing by consolidating rules and reducing extra approval gating for smoother merge flow.
  • Minor runtime invocation tweak to improve subprocess handling reliability.

• Tests

  • Adjusted a subprocess-related test invocation to more robustly exercise large-output behavior.

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 1aa6ca64-58c0-4061-8b58-655307516e93

📥 Commits

Reviewing files that changed from the base of the PR and between 9a62947 and 2685b44.

📒 Files selected for processing (3)

• .mergify.yml
• components/runners/ambient-runner/ambient_runner/bridges/gemini_cli/session.py
• components/runners/ambient-runner/tests/test_gemini_session.py

✅ Files skipped from review due to trivial changes (3)

• components/runners/ambient-runner/ambient_runner/bridges/gemini_cli/session.py
• .mergify.yml
• components/runners/ambient-runner/tests/test_gemini_session.py

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📝 Walkthrough

Walkthrough

Mergify queue rules simplified by removing the dedicated large-pr rule and consolidating size-based routing into a single default rule; small edits in the Gemini CLI session code and its test adjust how subprocess arguments and the limit expression are written without changing behavior.

Changes

Cohort / File(s)	Summary
Mergify configuration .mergify.yml	Removed large-pr queue and its size/approval gates; merged size-based queueing into one rule that enqueues non-draft, non-conflicting PRs to default; removed the extra #approved-reviews-by>=1 requirement from default.
Gemini CLI session & tests components/runners/ambient-runner/ambient_runner/bridges/gemini_cli/session.py, components/runners/ambient-runner/tests/test_gemini_session.py	Reformatted subprocess stream limit expression to 10 * 1024 * 1024 across multiple lines and split python3 invocation arguments in the test into separate parameters; no behavioral or control-flow changes.

🚥 Pre-merge checks | ✅ 6

✅ Passed checks (6 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	Title follows Conventional Commits format (type: fix, scope: ci) and clearly describes the main change: removing Mergify approval requirements for single-maintainer workflow.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
Performance And Algorithmic Complexity	✅ Passed	PR contains only cosmetic changes with no algorithmic complexity regressions; subprocess limit 10MB, bounded buffers with deque(maxlen), 60-second worker TTL, proper timeout handling, no N+1 patterns or unbounded growth.
Security And Secret Handling	✅ Passed	PR contains no security violations. Subprocess invocations are safe with arguments as lists, sensitive env vars filtered via blocklist, API keys never logged directly, and test fixtures use dummy values.
Kubernetes Resource Safety	✅ Passed	Kubernetes Resource Safety check is not applicable. PR modifies only CI/CD configuration and Python code without any Kubernetes manifests or resource definitions.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

✨ Simplify code

• Create PR with simplified code

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