CL-9384: migrate persisted approval stores to purge update_plan keys - #1186
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TheGreatAxios merged 4 commits intoSep 27, 2026
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…rewrite migration
Guard the session-start migration call so a future throw degrades to log-and-continue, and route the migration rewrite through the shared chained tmp+rename writer so a concurrent grant mint serializes with the purge instead of losing an update.
A direct wx write of .bak can crash mid-write and leave a torn rollback copy. The next start treats that EEXIST as success and purges live anyway. Write the full backup to a sibling tmp, then link it onto .bak so the name appears complete or not at all, and a pre-existing original still wins.
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One-time migration purges update_plan keys from persisted approvals files (session, project, global, provider-model stores). On-disk update_plan grants were dropped at load by normalizeSeededApprovals but never rewritten, so removing the normalizer later would resurrect the hole.
Verification: bun run typecheck (exit 0), targeted permission+session suites (589 pass), full bun test ./src ./tests ./evals ./scripts --randomize --seed 424242 (8025 pass, 0 fail), bun run lint (exit 0).
Fixes CL-9384