chore: prepare v1.66.0 release

[erraggy]

Summary

• Pre-release preparation for v1.66.0
• Includes CI benchmark results

Checklist

• All tests pass
• Benchmarks recorded
• Documentation reviewed

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🤖 Generated by prepare-release.sh

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: bd5e4e51-15a2-4cd2-97c3-8fa6921c1c9d

📥 Commits

Reviewing files that changed from the base of the PR and between 7e89c03 and 42e7cae.

📒 Files selected for processing (6)

• .claude-plugin/marketplace.json
• CLAUDE.md
• benchmarks/benchmark-v1.66.0.txt
• docs/cli-reference.md
• joiner/example_test.go
• plugin/.claude-plugin/plugin.json

Included review availability: Your plan provides up to 10 included reviews per hour; 7 remain after this review.

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📝 Walkthrough

Walkthrough

The change documents and tests pointer-mode semantic deduplication, adds benchmark results for version 1.66.0, and updates both Claude plugin manifests to version 1.66.0.

Changes

Pointer-mode deduplication release

Layer / File(s)	Summary
Pointer-mode behavior documentation and example CLAUDE.md, docs/cli-reference.md, joiner/example_test.go	The documentation describes pointer-mode retention and consolidation reporting. The executable example verifies that ProductGroup references the retained Category schema.
Release metadata and benchmark records .claude-plugin/marketplace.json, plugin/.claude-plugin/plugin.json, benchmarks/benchmark-v1.66.0.txt	Both plugin manifests now use version 1.66.0. Benchmark output records measurements for the supported packages.

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: ⚪ Minimal · up to 42e7c

This release-preparation change updates benchmarks, documentation, example tests, and version metadata; no actionable merge-blocking risk remains beyond normal checks and review.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the release-preparation work and specifies version 1.66.0.
Description check	✅ Passed	The description accurately summarizes the release preparation, benchmark results, tests, and documentation review.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 1 files. (5 skipped: 5 …
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.

Full details: Docstring Coverage

Explanation

Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 1 files. (5 skipped: 5 unsupported.)

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/v1.66.0-release-prep

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_{Comment @coderabbitai help to get the list of available commands.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.22%. Comparing base (7e89c03) to head (42e7cae).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #555   +/-   ##
=======================================
  Coverage   88.22%   88.22%           
=======================================
  Files         223      223           
  Lines       31499    31499           
=======================================
  Hits        27791    27791           
  Misses       2407     2407           
  Partials     1301     1301           

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