Similar-sweep PR process

During active feature work, pause opening new similar-sweep PRs until the current batch is merged or rebased onto main.

Before opening

1. git fetch origin main && git rebase origin/main — do not git merge main (merge commits clutter the graph; use rebase when syncing with main).
2. Use the checklist in .github/pull_request_template/similar_sweep.md
3. Run overlap check: node .github/scripts/check-pr-file-overlap.mjs

Merge order (when many PRs are open)

1. Mergeable sweep/fix PRs with green CI
2. Feature stack: #1454 → #1455 → #1458 → #1453
3. Rebase conflicting sweeps (port vector-db fixes to vector-db-class.ts only)
4. Paired PRs #1504 + #1505 together
5. Dependabot lockfile PRs last, alone

File-split modules (collision reduction)

Large CLI/backend files are split into focused modules under cli/commands/manage/ and backends/facts-db/procedures/. Prefer adding commands to the smallest matching register-*.ts file rather than the orchestrator.