---
phase: 14-parallel-phase-execution
plan: 05
subsystem: api
tags: [trpc, phase-dispatch, dependencies, procedures]

# Dependency graph
requires:
  - phase: 14-01
    provides: PhaseRepository dependency methods
  - phase: 14-03
    provides: PhaseDispatchManager port interface
provides:
  - tRPC procedures for phase dependencies
  - tRPC procedures for phase dispatch queue
affects: [14-parallel-phase-execution]

# Tech tracking
tech-stack:
  added: []
  patterns:
    - PhaseDispatchManager wired through tRPC context
    - requirePhaseDispatchManager helper pattern

key-files:
  created: []
  modified:
    - src/trpc/context.ts
    - src/trpc/router.ts
    - src/db/schema.ts

key-decisions:
  - "PhaseDispatchManager optional in context following existing pattern"
  - "createPhaseDependency validates both phases exist before creating dependency"
  - "getPhaseDependencies returns { dependencies: string[] } wrapper for consistency"

patterns-established:
  - "Phase dispatch procedures mirror task dispatch procedures"
  - "Dependency procedures under Phase Procedures section"

# Metrics
duration: 3min
completed: 2026-02-02
---

# Phase 14 Plan 05: tRPC Procedures for Phase Dependencies and Dispatch Summary

**tRPC procedures for phase dependency creation and phase dispatch queue management, exposing PhaseDispatchManager operations via API**

## Performance

- **Duration:** 3 min
- **Started:** 2026-02-02T13:39:00Z
- **Completed:** 2026-02-02T13:42:00Z
- **Tasks:** 2
- **Files modified:** 3

## Accomplishments

- Added PhaseDispatchManager to tRPC context with optional pattern
- Added requirePhaseDispatchManager helper function for context validation
- Added createPhaseDependency procedure with phase existence validation
- Added getPhaseDependencies procedure returning dependency IDs
- Added queuePhase, dispatchNextPhase, getPhaseQueueState procedures
- Fixed blocking issue: added 'blocked' status to phases schema enum

## Task Commits

Each task was committed atomically:

1. **Task 1: Add PhaseDispatchManager to tRPC context** - `28622cb` (feat)
2. **Task 2: Add phase dependency and dispatch procedures** - `5e6d507` (feat)

## Files Created/Modified

- `src/trpc/context.ts` - Added PhaseDispatchManager import, added to TRPCContext and CreateContextOptions, wired through createContext
- `src/trpc/router.ts` - Added PhaseDispatchManager import, requirePhaseDispatchManager helper, 5 new procedures (createPhaseDependency, getPhaseDependencies, queuePhase, dispatchNextPhase, getPhaseQueueState)
- `src/db/schema.ts` - Added 'blocked' to phases status enum (blocking fix)

## Decisions Made

- PhaseDispatchManager optional in context following agentManager/dispatchManager pattern
- createPhaseDependency validates both phases exist before creating dependency
- getPhaseDependencies returns wrapper object { dependencies: string[] } for API consistency
- Phase dispatch procedures added in new "Phase Dispatch Procedures" section
- Dependency procedures added under existing "Phase Procedures" section

## Deviations from Plan

### Auto-fixed Issues

**1. [Rule 3 - Blocking] Fixed phases schema missing 'blocked' status**
- **Found during:** Task 1 (type-checking after context changes)
- **Issue:** PhaseDispatchManager.blockPhase() tries to set status 'blocked' but phases schema only allowed 'pending', 'in_progress', 'completed'
- **Fix:** Added 'blocked' to phases status enum in schema.ts, updated updatePhase procedure to accept 'blocked'
- **Files modified:** src/db/schema.ts, src/trpc/router.ts
- **Verification:** npx tsc --noEmit passes
- **Committed in:** 28622cb (Task 1 commit)

---

**Total deviations:** 1 auto-fixed (1 blocking)
**Impact on plan:** Essential fix to allow phase blocking functionality. Pre-existing bug from plan 14-04.

## Issues Encountered

None.

## User Setup Required

None - no external service configuration required.

## Next Phase Readiness

- Phase dependency and dispatch procedures available via tRPC API
- Full API surface for parallel phase execution management
- Ready for plan 14-06

---
*Phase: 14-parallel-phase-execution*
*Completed: 2026-02-02*
