chore: remove git-ai-commit tooling and context docs

[greenc-FNAL]

• Delete the commit helper, its tests, man page, and context-optimization documents.
• Stop installing the helper and adding its man page to MANPATH in the devcontainer.

• Tooling: Removed the scripts/git-ai-commit helper and its tests. The helper generated commit messages from staged changes and supported several model backends.
• Devcontainer: Removed setup that linked the helper into /usr/local/bin and added the repository man-page directory to MANPATH.
• Documentation: Removed the helper’s man page and three context-planning documents.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: Organization UI
• Review profile: ASSERTIVE
• Plan: Advanced
• Run ID: 33138c44-30ca-4d0b-beb2-9ba64d3413c1

📥 Commits

Reviewing files that changed from the base of the PR and between cd1a2e6 and 9ad2e52.

📒 Files selected for processing (7)

• .devcontainer/post-create.sh
• docs/dev/git-ai-commit-context/git-ai-commit-context-optimization.json
• docs/dev/git-ai-commit-context/git-ai-commit-context-optimization.md
• docs/dev/git-ai-commit-context/git_ai_commit_context_guidelines.md
• scripts/git-ai-commit
• scripts/man/man1/git-ai-commit.1
• scripts/test/test_git_ai_commit.py

💤 Files with no reviewable changes (6)

• scripts/man/man1/git-ai-commit.1
• docs/dev/git-ai-commit-context/git-ai-commit-context-optimization.json
• scripts/git-ai-commit
• docs/dev/git-ai-commit-context/git-ai-commit-context-optimization.md
• docs/dev/git-ai-commit-context/git_ai_commit_context_guidelines.md
• .devcontainer/post-create.sh

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📜 Recent review details

⏰ Context from checks skipped due to timeout. (2)

• GitHub Check: determine-languages
• GitHub Check: clang-tidy-check

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📝 Walkthrough

Walkthrough

The pull request removes the git-ai-commit executable and its development-container setup. It also deletes the command’s manual page and two documents about its context handling and optimization plans.

Changes

git-ai-commit removal

Layer / File(s)	Summary
Remove command and setup scripts/git-ai-commit, .devcontainer/post-create.sh	The executable and the development-container setup for its symlink and MANPATH are removed.
Remove command documentation scripts/man/man1/git-ai-commit.1, docs/dev/git-ai-commit-context/*	The command manual page, context guidelines, and optimization plan are deleted.

Priority: ⬇️ Low

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Other

Merge Risk: ⚪ Minimal · up to 9ad2e

The command and its associated setup were removed together. No surviving supported workflow was found to depend on them; the PR is mergeable after normal checks.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly identifies the main change: removal of the git-ai-commit tooling and its context documentation. It also matches the devcontainer cleanup described in the pull request objectives.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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