Remove 17 duplicate workflow files that were split copies of the
combined originals. Each family (CI, CodeQL, Coverage, PR Build,
Alpha Release) had the same job duplicated across separate
push/pull_request/schedule/manual trigger files.
Merge codeql.yml and codescan.yml into a single codeql.yml with
a language matrix covering go, javascript-typescript, python,
and actions — matching the previous default setup coverage.
Remaining workflows (one per family):
- ci.yml (push + PR + manual)
- codeql.yml (push + PR + schedule, all languages)
- coverage.yml (push + PR + manual)
- alpha-release.yml (push + manual)
- pr-build.yml (PR + manual)
- release.yml (tag push)
- agent-verify.yml, auto-label.yml, auto-project.yml
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
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