Start
Ran ignition — concurrent-session check reported another active session, moved into a worktree per concurrency.md
Worktree was resumed, not fresh — it already carried 8 unmerged commits from a prior session
Correction
Zeb flagged there should be no concurrent session — re-ran the check from inside the worktree, confirmed CLEAR; the original detection was almost certainly this session's own heartbeat read back within 7 seconds of being written, misread as a second session
Exited the worktree back to the main checkout rather than defend a wrong detection
Discovery
Attempted to remove the now-unneeded worktree — ExitWorktree refused, revealing 8 real commits (a full MedinaCHF welcome-page/onboarding feature plus its own retro) that had never reached master
Confirmed via git log master..worktree-branch and git branch --contains — genuinely absent from master, not just uncommitted
Merge
Merged the worktree branch into master; four generated-artifact files conflicted (cross-session-findings.json, engine-health.md x3) — resolved by taking HEAD's newer regenerated versions, since both sides were independently-regenerated scan output, not hand-authored content
Verified the merge carried real product changes: schema column, welcome page, onboarding action
Verify before claiming
Rather than trust the merged retro's own claim that the feature was 'deployed and verified live,' independently curled the production /welcome route — confirmed 307 (redirect to sign-in), matching the retro's claim
Per Verification Gate — a prior session's record is not current truth until checked
Sync
Pushed the merge to origin/master per Zeb's explicit 'why wouldn't we merge it' — local and remote were out of sync before this
Cleaned up the now-fully-merged worktree branch and directory (directory removal partially blocked by a Windows file lock, branch itself deleted safely since -d confirmed full merge)
Live incident
Courtney's bug report arrived mid-session: member invitation sending returning a server error, for both first sends and resends, after having worked once earlier in testing
Prioritized the live production bug over the still-pending process-fix request, per explicit user choice
Investigate
vercel logs CLI could not retrieve overnight logs regardless of --since (hard ~1-3hr retention window, confirmed by testing multiple values) — pivoted to code + git history review instead of guessing from a live log that wasn't retrievable
Found and ruled out a prior, already-fixed instance of the same failure SHAPE (invalid non-async export breaking the Server Actions file) via git history — confirmed current file has no such export
Root cause
Traced sendMemberInvitation line by line — found cleanUpOrphanedClerkUser (added 2026-08-17) runs unconditionally on every send/resend, OUTSIDE the function's own try/catch, with its Clerk getUserList() call and a per-result db.select() completely unguarded
Matches Courtney's exact symptom: not resend-specific, breaks ALL sends including brand-new invites with no orphan involved
Fix + verify
Wrapped the cleanup check in its own try/catch — on failure, logs and falls back to pre-2026-08-17 behavior (skip check, proceed to createInvitation) rather than crashing the whole action
Verified via real tsc, real next build, then deployed and confirmed live (200 on homepage, 307 on /welcome, /coordinator/members)
Process fix
Added a new CLOSE Step 0 to ignition-core.md and a cross-linked section in concurrency.md: any worktree session must merge to master and push BEFORE deploying or closing; deploy only ever runs from the main checkout on master
Directly addresses the root gap this session started by discovering — a worktree deploy that never synced back to master's own history
