The NOT NULL constraint forced heartbeat runs to synthesize a fake task
row (`[Heartbeat] X — Check for work`) so the FK could resolve. Three
layers of code — acquireHeartbeatTask, findReusableHeartbeatTask,
cleanupDuplicateHeartbeatTasks, plus the is_heartbeat flag column + UI
filter — existed to paper over one bad constraint. Remove the
constraint and the whole workaround vanishes.
SQLite table rebuild with data preservation. Live production DB, no
backup — migration is atomic, idempotent, and verified before DROP.
## Migration v35 (rebuild runs with nullable task_id)
Uses `fn:` form so it can:
- Snapshot `COUNT(*) FROM runs` before copy
- Walk `PRAGMA table_info(runs)` to detect drift columns (v34 declared
a column set; any additive ALTER since v14 shows up here)
- Assert `COUNT(*) FROM runs_new == beforeCount` before `DROP TABLE runs`
- `PRAGMA defer_foreign_keys = ON` so run_events(run_id) FK defers to
commit time, by which runs has the same id set under the new name
- Recreate all 6 indexes on the new table
If the assertion fails, the migration throws inside the existing
`transaction()` wrapper. SQLite rolls back the whole migration, old
`runs` table is untouched, `schema_migrations` never records v35. Next
app start retries cleanly.
## Migration v36 (drop tasks.is_heartbeat + synthetic rows)
Runs now carry `task_id = NULL` for heartbeat dispatches. The
`is_heartbeat` flag is dead data going forward.
1. `UPDATE runs SET task_id = NULL WHERE task_id IN (SELECT id FROM tasks WHERE is_heartbeat = 1)`
2. `DELETE FROM tasks WHERE is_heartbeat = 1` (synthetic rows, not real work)
3. Rebuild `tasks` without the `is_heartbeat` column (same defer-FK +
row-count-assert pattern as v35)
## Code cleanup
- `RunRecord.taskId: string | null`; `createRun` / `cancelRunForDeletion`
/ `finishRun` guard every `UPDATE tasks` path with a null-check.
- `TaskRecord.isHeartbeat` removed; every SELECT / filter / UI reference
dropped.
- Delete `acquireHeartbeatTask` / `findReusableHeartbeatTask` /
`cleanupDuplicateHeartbeatTasks` — dead after the constraint lifts.
- Delete `src/main/orchestration/heartbeat-task.ts` (pure workaround
constant file).
- `heartbeat.ts` creates runs with `taskId: null` when the agent has no
assigned work. Turn context already supports nullable task
(heartbeatFallbackSection); prompt surface unchanged.
- `validateTaskCreation` drops the `isHeartbeat` parameter — user-
authored + automation-authored tasks are never heartbeat.
- Renderer: `run.taskId ? taskMap.get(...) : undefined` in Dashboard /
RunCenter / RunDetail / RunQueue.
- Delete `tests/unit/heartbeat-coalescing.test.ts` (12 tests that
exercised the deleted DB methods).
- Drop 1 isHeartbeat-bypass test from `task-quality-gates.test.ts`.
## Grep verification
- `isHeartbeatTaskTitle src/` → 0
- `acquireHeartbeatTask src/` → migration comment only
- `is_heartbeat src/` → schema.ts migration history only
- `isHeartbeat src/` → 0
Tests: 578/578 (was 591 — delta is 13 tests that tested deleted code).
Cost was written through three independent paths: worker-runner shipped
`finalUsage.costUsd` in run-finished -> finishRun wrote `runs.cost_usd`,
`tasks.cost_usd += costUsd`, `agents.spent_monthly_usd += costUsd`, and
inserted a per-run aggregate row in cost_entries. CostWriter
additionally inserted per-message rows in cost_entries from main. Any
CostWriter failure created silent drift between `SUM(cost_entries)`
(read by budget enforcement) and `runs.cost_usd` (read by the UI).
Make CostWriter the single writer, finishRun the single reader.
- Add `db.recordCostEntry(...)` as the first-class insert path for
per-message cost rows. CostWriter calls it; tests call it directly.
- Remove the aggregate INSERT from finishRun. finishRun now reads
`SELECT COALESCE(SUM(amount_usd), 0) FROM cost_entries WHERE run_id=?
AND unattributed=0` and writes that as the authoritative run total to
runs.cost_usd, tasks.cost_usd, and agents.spent_monthly_usd.
- Drop `costUsd` from `finishRun` input, the worker `run-finished`
ChildMessage shape, the automation `RunFinishedEvent` type, and every
caller + test fixture. Cost is owned by the per-message path.
- worker-runner stops extracting `usage.cost.total` — token counts stay
for session accumulation, cost comes from pi-ai via CostWriter.
- run-finished-helpers now gates budget incident checks on
`event.status === "succeeded"` instead of a cost field that no longer
exists on the event.
- automation-run-completion fires `budget_threshold` on every succeeded
run (post-run spent_monthly_usd already reflects the SUM path).
- Update budget tests to write a `recordCostEntry` before `finishRun`
to simulate the per-message cost path; drop `costUsd` from cross-
subsystem, edge-case-budget, database, and related fixtures.
One writer, one reader, one source of truth. No drift.
CompanySlice's standalone currentCompanyId field + setCurrentCompanyId action
were never written by any caller, so useDesktopEvents.ts read null and fell
through to full refresh for every entity event -- the granular patch
machinery was dead code.
- Remove currentCompanyId field + setCurrentCompanyId from CompanySlice
- refreshBadges reads from snapshot.currentCompanyId
- useDesktopEvents reads companyId from snapshot.currentCompanyId
- Update store unit test to seed snapshot instead of calling removed action
- Install zustand 5.x and immer 11.x dependencies
- Create 6 Zustand slices: navigation, company, selection, ui, communication, social
- Create combined store with devtools + immer middleware
- Create IPC event batcher with 50ms debounce window (schedule/flush/dispose)
- Create typed selector hooks for narrow state subscriptions
- Add 14 unit tests covering store initialization, slice behaviors, and batcher timing
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
ZacharyZhang-NY
