docs(changelog): move 23 v0.6.0-tag-absorbed sections out of [Unreleased] + resolve PR #TBD placeholders

[pilotspacex-byte]

Summary

The v0.6.0 tag (355f68d, cut 2026-07-10) absorbed six PRs merged after the release PR (#248 FastScan bundle, #250 hardening sweep, #251, #254, #255, #256) — their 23 CHANGELOG sections sat in [Unreleased] and would have over-claimed the v0.7.0 release notes. Moved verbatim into a new "Absorbed post-release-PR merges" block under ## [0.6.0]; resolved all 8 stale PR #TBD placeholders (#261, #257, 6× #248).

Verification

• Per-section ancestry gate: git merge-base --is-ancestor <merge-commit> v0.6.0 for every moved (YES ×6 PRs) and kept (NO ×9 PRs) section — full table in the audit.
• Section-count invariant: 306 ### headers before and after; multiset content comparison (header+body) = 0 mismatches beyond the 8 header substitutions.
• Docs-only: git diff --stat shows CHANGELOG.md alone.

Prep for the v0.7.0 roll-up (task #65); audit source: CHANGELOG accuracy review 2026-07-14.

Summary by CodeRabbit

• Documentation
  • Updated release notes with finalized pull request references.
  • Added documentation for the moon:// and moons:// connection URI schemes.
  • Refined notes covering crash recovery, vector and graph performance, cold-tier storage, TTL reclamation, and COLD-segment reload behavior.

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 11d335f1-0279-4274-9f2d-02afa810f78b

📥 Commits

Reviewing files that changed from the base of the PR and between d07f034 and 3349e00.

📒 Files selected for processing (1)

• CHANGELOG.md

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📝 Walkthrough

Walkthrough

Changes

The changelog replaces placeholder PR references with finalized numbers, adds the moon:// / moons:// URI scheme entry, and updates disk-offload, vector, graph, cold-tier, documentation, and WS3 release-note entries.

Changelog release-note updates

Layer / File(s)	Summary
Release-note references and historical fixes CHANGELOG.md	Documentation, cold-tier, disk-offload, and vector reload entries use finalized references or updated surrounding text.
Vector and graph tuning release notes CHANGELOG.md	Vector and graph tuning entries reference PR #248, and the WS3 follow-up heading is updated.

Estimated code review effort: 1 (Trivial) | ~3 minutes

Suggested reviewers: tindang97, tindangtts

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly describes the changelog relocation and PR placeholder cleanup, matching the main change.
Description check	✅ Passed	The description is detailed and on-topic, with a summary and verification notes that cover the core change.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch worktree-agent-af760102ea17065b8

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