[leehack]

Summary

• update_core_changelog_native_pin now removes a whole hand-written - Updated the default llama.cpp native runtime pin to … bullet (non-indented continuation lines and trailing blank lines) without touching the next bullet or heading.
• Corrects the stale comment above the model store "Publish dry-run" step in ci.yml.

Part of #1815; does not close it.

Production-readiness scope

• User-facing scope: Maintainer release tooling only; no runtime change.
• Supported platforms/paths: tool/native/sync_native_release_pins.py, CI comment.
• Unsupported or intentionally unavailable paths: N/A
• Out of scope / follow-ups: Remaining #1815 items.

Completeness checklist

• Declared scope is fully implemented.
• Unsupported platform/option combinations: N/A (no runtime behavior).
• Public API docs/changelog: N/A (maintainer tooling, not user-observable).
• Regression test added; verified failing on the old pattern before the fix.
• Validation coverage registry: N/A (no public capability change).
• Security/privacy: no secrets involved.
• Follow-ups tracked in #1815.

PR type guidance

• Bugfix PR: root cause: the old pattern (?:\n .*)* only consumed two-space-indented continuation lines, so other continuation lines and blank lines survived the replacement. Test test_replaces_a_hand_written_entry_with_unindented_continuation_lines fails on the old pattern (leftover b1 text) and passes now.

Test Plan

• dart run tool/prepare_workspace.dart
• dart format --output=none --set-exit-if-changed .
• dart analyze
• dart test -p vm -j 1 --exclude-tags local-only N/A locally: no lib/ change; test/unit/tooling/ run (only environmental pwsh-missing windows_registry_qualification_test failures)
• dart test -p chrome --exclude-tags local-only N/A: no web/lib change
• coverage-lib N/A: no lib/ change
• python3 -m unittest discover -s tool/native -p 'test_*.py': 190 OK (after prepare); python3 tool/native/test_sync_native_release_pins.py: 148 OK
• python3 -m unittest discover -s test/ci -p test_select_jobs.py: 41 OK
• TMPDIR=$(mktemp -d) dart test -p vm on test/unit/tooling/{companion_release_workflow_scripts,check_released_changelog_sections,classify_high_risk_changes,test_matrix,high_risk_readiness}_test.dart: +410 ~1, pass

Matrix Evidence

Matrix row	Scope covered	Platform / model / backend	Result	Evidence / notes
high-risk-exact-head-independent-qa	Release tooling Python tests + tooling Dart tests	macOS	Pass	Exact head 2150fcd; CI run 42520716719 success; N/A: no model/runtime path touched

Review Notes

• Independent review status: PASS (fresh agent session, not the author), blocking-only, at exact head 2150fcd. Zero blocking findings, zero PR-caused P1, 0 review threads.
• CI status / head SHA: 2150fcd, CI run 42520716719 success.
• Base: merge base e8201c8. main has since moved to 60c8fe3 (#1816); its ci.yml change does not overlap this PR's comment-only hunk and git merge-tree with origin/main is clean.
• Readiness evidence (v2, surfaces artifactConsumer, regressionPolicy): tool/testing/high_risk_readiness.dart exits 2 (unverifiedPrerequisites), the expected result for a valid local run.

High-risk regression review

• Classification: high-risk (artifactConsumer, regressionPolicy)
• Implementation task: this PR
• Independent blocking QA task: fresh agent audit, PASS at exact head. Only caller update_llama_cpp_project_docs (sync_native_release_pins.py:4655) edits root CHANGELOG.md ## Unreleased only, run from workflow_dispatch sync_native_bindings.yml into a reviewable PR. Replay of old vs new pattern over all 2,211 historical changelog blobs: 0 content diffs, 0 released-section changes, 111 blank-line-only improvements; no catastrophic backtracking. Mutation: restoring main's old pattern fails the new test.
• Exact head / current base: 2150fcd / merge base e8201c8 (main at 60c8fe3, merge-tree clean)
• Production-branch deletion, bypass, or miswire proof: N/A (tooling-only)
• Affected-family real-model/artifact evidence: N/A (no model family affected)
• Explicit unavailable-family or other N/A evidence: N/A
• Known PR-caused P1 regressions: 0
• Unresolved review threads: 0

[github-actions]

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