chore(gastown): Delete dead patrol/scheduling/review-queue code

[jrf0110]

Summary

The reconciler replaced all patrol, scheduling, and review-queue alarm functions in Phases 3-4. The old code is still present (~2500 lines) with DEAD CODE comments but is never called from the alarm loop. Delete it to reduce confusion and binary size.

Files to clean up

• src/dos/town/patrol.ts (~789 lines) — Keep: createTriageRequest, countPendingTriageRequests, listPendingTriageRequests, TRIAGE_LABEL_LIKE, TRIAGE_REQUEST_LABEL, TRIAGE_BATCH_LABEL, GUPP/GC constants. Delete: detectStaleHooks, feedStrandedConvoys, rehookOrphanedBeads, detectCrashLoops, detectOrphanedWork, agentGC, checkTimerGates, detectGUPPViolations.
• src/dos/town/scheduling.ts (~374 lines) — Keep: hasActiveWork, dispatchAgent, dispatchUnblockedBeads, constants. Delete: schedulePendingWork and sub-functions.
• src/dos/town/review-queue.ts (~1191 lines) — Keep: submitToReviewQueue, setReviewPrUrl, markReviewInReview, completeReviewWithResult, agentDone, agentCompleted, listPendingPRReviews, molecule functions. Delete: recoverStuckReviews, closeOrphanedReviewBeads, recoverOrphanedSourceBeads, popReviewQueue.
• src/dos/Town.do.ts — Delete: witnessPatrol(), deaconPatrol(), processReviewQueue(), processConvoyLandings(), failReviewWithRework(), pollPendingPRs().

Acceptance Criteria

• All dead functions removed
• No references to removed functions remain
• Shared constants and triage functions extracted to a clean module if needed
• All tests pass
• TypeScript compiles clean