[spec-extractor] Update package specifications for parser, repoutil, semverutil, sliceutil

[github-actions]

Package Specification Updates

This PR re-verifies README.md specifications for the following packages (round-robin rotation, last_index 8 -> 12):

Package	Status	Exported Symbols
parser	Re-verified, no changes	50+ functions, 20+ types (large package)
repoutil	Re-verified, no changes	2 functions
semverutil	Re-verified, no changes	8 functions, 1 type (2 methods)
sliceutil	Re-verified, no changes	9 generic functions

What Changed

Each package's exported functions, types, constants, and variables were cross-checked against the existing README.md content:

• parser: verified public types/functions/constants table against source (schema_validation.go, json_path_locator.go, import_cache.go, github_urls.go, etc.) -- no deltas.
• repoutil: verified SplitRepoSlug and NormalizeRepoForAPI signatures -- no deltas.
• semverutil: verified SemanticVersion type, its methods, and all 8 exported functions -- no deltas.
• sliceutil: verified all 9 generic functions (Filter, Map, MapKeys, FilterMapKeys, SortedKeys, Any, Deduplicate, MergeUnique, Exclude) -- no deltas.

Only the "Source Synchronization" footer in each README was updated with a new 2026-09-03 re-verification note; no public-contract or usage-example content changed.

Extraction Method

• Source code analysis of exported symbols, types, and constants
• Package doc comment extraction
• Comparison against existing README.md Public API tables
• Existing spec_test.go contract tests in each package continue to assert documented behavior

Round-Robin State

• Packages processed this run: parser, repoutil, semverutil, sliceutil
• Next packages in rotation: packages at index 12+ (see rotation.json)
• Total packages: 20
• Coverage: 20/20 packages have specifications (this run re-verifies, does not add new coverage)

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Auto-generated by Package Specification Extractor workflow

Generated by 📋 Package Specification Extractor · copilot · auto · 91.2 AIC · ⌖ 10.3 AIC · ⊞ 9.2K · ◷

• expires on Sep 6, 2026, 1:42 AM UTC-08:00

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Branch refresh requested by PR Sous Chef run https://github.com/github/gh-aw/actions/runs/33740403993

Generated by 👨‍🍳 PR Sous Chef · pi · gpt54 · 29.2 AIC · ⌖ 8.78 AIC · ⊞ 9.2K · ◷
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[gh-aw-bot]

@copilot Please take the next forward-progress pass on this PR.

• This PR is newly opened and currently has no review or CI feedback recorded here yet.
• Please verify the generated package-spec updates are intentional, refresh the branch/CI state if needed, and run the pr-finisher skill before handing back to maintainers.
• Summarize any maintainer-facing blocker that remains after that pass.

Generated by PR Sous Chef: https://github.com/github/gh-aw/actions/runs/33740403993

Generated by 👨‍🍳 PR Sous Chef · pi · gpt54 · 29.2 AIC · ⌖ 8.78 AIC · ⊞ 9.2K · ◷
_{Comment /souschef to run again}

[Copilot]

@copilot Please take the next forward-progress pass on this PR.

• This PR is newly opened and currently has no review or CI feedback recorded here yet....

Completed the forward-progress pass. Verified the four README updates are intentional and limited to 2026-09-03 source-synchronization notes; no public API deltas were found. The branch is up to date with main, and local make fmt, make lint, make test-unit, make test, and make recompile pass. No additional commit was necessary. CI remains pending/stale for maintainer re-trigger, with no failed jobs in the prior runs.

[github-actions]

🎉 This pull request is included in a new release.

Release: v0.88.3