✨ feat: support complete commit and Gitmoji conventions

[zrr1999]

Summary

• make the default zendev profile a complete strict convention with one unique type for every one of the 75 vendored Gitmoji intentions
• preserve all original zendev pairs, including 🎉 init, while accepting canonical Unicode, shortcodes, and variation-selector aliases and rejecting mismatched pairs
• keep the complete mapping reviewable in emoji-conventions.toml; interactive commit choices, commit-msg hooks, PR-title validation, suggestions, schema help, and docs all consume the same data
• add explicit conventional and untyped gitmoji profiles, including complete Conventional Commits 1.0.0 bodies/footers and the official Gitmoji title shape
• vendor the pinned 75-entry Gitmoji catalog and upstream MIT notice for deterministic offline validation
• gate tag publishing on static checks and tests, reduce CI permissions, and document the planned v0.1.0 integration

Validation

• uv run ruff check .
• uv run ruff format --check .
• uv run pyright
• uvx ty check .
• uvx prek run --all-files
• uv run pytest --cov=zendev --cov-report=term-missing — 96 passed, 83.59% coverage
• exercised every one of the 75 canonical Unicode/type pairs and all 75 shortcode/type pairs
• verified 🎉 init: begin a project, :thread: concurrency: avoid a race, variation-selector aliases, and complete messages with bodies/footers
• verified known but mismatched pairs such as 🚀 feat: wrong pair are rejected with the expected canonical type
• built and inspected an isolated wheel; the type mapping, 75-entry catalog, and Gitmoji MIT notice are packaged and functional after install
• verified the vendored catalog canonical checksum matches upstream commit 3022406c3c0f0631572b50c7722a7f2a0bed1541
• exercised a real temporary Git commit-msg hook and the packaged PR-title CLI
• gitleaks dir --redact --no-banner .
• git diff --check

Notes

• This PR does not create a release or tag.
• Existing canonical zendev pairs remain valid; the default profile now adds strict coverage for the remaining Gitmoji intentions.
• README references v0.1.0 as the intended release that will contain these profiles.