Harden mount daemon recovery follow-ups

[khaliqgant]

Summary

• register foreground mount loops in the same PID state used by background daemons so relayfile status/stop can see active foreground mounts
• refuse re-home on unverified mount PID state without deleting the evidence, while preserving the PR Fix mount reconcile drift and local-dir footguns #174 legacy localDir fallback
• dedupe oversized local-file skip logs per path/size/cap and persist incremental event progress only after each applied page so large backlogs can converge after mid-pull errors

Issue coverage

Refs #175. This covers the remaining relayfile-side follow-ups C/E/F after #174 covered A/B/D. Cloud-side G/H remain out of scope for this repo.

Review

• Codex subagent review: no findings after follow-up coverage was added
• Claude review via agent-relay: no blockers; noted foreground PID cleanup, which is covered by the existing deferred pid-file removal

Verification

• go test ./cmd/relayfile-cli -run 'TestMount(UsesLegacyRecordedLocalDirWhenOmitted|RefusesExplicitLocalDirThatRehomesRecordedMirror|RehomeRefusesRunningRecordedDaemon|RehomeRefusesUnverifiedRecordedDaemon|RehomeAllowsExplicitMoveAndPersistsLocalDir)|TestShouldRegisterMountPID|TestStatusIncludesLocalMirrorAndDaemonCounts' -count=3\n- go test ./internal/mountsync -run 'TestPullRemoteIncrementalPersistsAppliedPageCursorOnListEventsError|TestScanLocalFilesLogsOversizedFileOncePerSize|TestPullShortCircuitsWhenNoNewEvents|TestQuietEventCyclesEventuallyRunPeriodicFullPull|TestForceFullReconcile' -count=3\n- go test -count=1 ./...\n- scripts/check-contract-surface.sh\n- git diff --check --cached

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 7d2e1997-acd4-42bd-9dec-558753792dfc

📥 Commits

Reviewing files that changed from the base of the PR and between 58219ec and a7174b7.

📒 Files selected for processing (4)

• cmd/relayfile-cli/main.go
• cmd/relayfile-cli/main_test.go
• internal/mountsync/syncer.go
• internal/mountsync/syncer_test.go

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch codex/issue-175-mount-recovery

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[github-actions]

Relayfile Eval Review

Run: .relayfile/evals/runs/2026-05-21T09-13-49-336Z-HEAD-provider
Mode: provider
Git SHA: a011d13

Passed: 4 | Needs human: 0 | Reviewable: 0 | Missing output: 0 | Failed: 0 | Skipped: 0

Human Review Cases

No reviewable human-review cases captured Relayfile output.

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 5 additional findings.