ss-tools/specs/018-task-logging-v2/tasks.md

# Tasks: Task Logging System (Separated Per-Task Logs)

**Input**: Design documents from `/specs/018-task-logging-v2/`
**Prerequisites**: plan.md (required), spec.md (required for user stories), ux_reference.md (required)

**Tests**: Test tasks are included as per the verification plan in plan.md.

**Organization**: Tasks are grouped by user story to enable independent implementation and testing of each story.

## Format: `[ID] [P?] [Story] Description`

- **[P]**: Can run in parallel (different files, no dependencies)
- **[Story]**: Which user story this task belongs to (e.g., US1, US2, US3)
- Include exact file paths in descriptions

## Path Conventions

- **Web app**: `backend/src/`, `frontend/src/`

---

## Phase 1: Setup (Shared Infrastructure)

**Purpose**: Project initialization and basic structure

- [ ] T001 Create database migration for `task_logs` table in `backend/src/models/task.py`
- [ ] T002 [P] Define `LogEntry` and `TaskLog` schemas in `backend/src/core/task_manager/models.py`
- [ ] T003 [P] Create `TaskLogger` class in `backend/src/core/task_manager/task_logger.py`
- [ ] T004 [P] Create `TaskContext` class in `backend/src/core/task_manager/context.py`

---

## Phase 2: Foundational (Blocking Prerequisites)

**Purpose**: Core infrastructure that MUST be complete before ANY user story can be implemented

**⚠️ CRITICAL**: No user story work can begin until this phase is complete

- [ ] T005 Implement `TaskLogPersistenceService` in `backend/src/core/task_manager/persistence.py`
- [ ] T006 Update `TaskManager` to include log buffer and flusher thread in `backend/src/core/task_manager/manager.py`
- [ ] T007 Implement `_flush_logs` and `_add_log` (new signature) in `backend/src/core/task_manager/manager.py`
- [ ] T008 Update `_run_task` to support `TaskContext` and backward compatibility in `backend/src/core/task_manager/manager.py`
- [ ] T009 [P] Update `TaskCleanupService` to delete logs in `backend/src/core/task_manager/cleanup.py`

**Checkpoint**: Foundation ready - user story implementation can now begin in parallel

---

## Phase 3: User Story 2 - Persistent Log History (Priority: P1) 🎯 MVP

**Goal**: Ensure logs are saved to the database and accessible after server restart.

**Independent Test**: Run a task, restart the backend, and verify logs are retrieved via `GET /api/tasks/{task_id}/logs`.

### Implementation for User Story 2

- [ ] T010 [P] [US2] Implement `GET /api/tasks/{task_id}/logs` endpoint in `backend/src/api/routes/tasks.py`
- [ ] T011 [P] [US2] Implement `GET /api/tasks/{task_id}/logs/stats` and `/sources` in `backend/src/api/routes/tasks.py`
- [ ] T012 [US2] Update `get_task_logs` in `TaskManager` to fetch from persistence for completed tasks in `backend/src/core/task_manager/manager.py`
- [ ] T013 [US2] Verify implementation matches ux_reference.md (Happy Path & Errors)

**Checkpoint**: User Story 2 complete - logs are persistent and accessible via API.

---

## Phase 4: User Story 1 - Real-time Filtered Logging (Priority: P1)

**Goal**: Real-time log streaming with server-side filtering.

**Independent Test**: Connect to WebSocket with `?source=plugin` and verify only plugin logs are received.

### Implementation for User Story 1

- [ ] T014 [US1] Update WebSocket endpoint in `backend/src/app.py` to support `source` and `level` query parameters
- [ ] T015 [US1] Implement server-side filtering logic for WebSocket broadcast in `backend/src/core/task_manager/manager.py`
- [ ] T016 [P] [US1] Create `LogFilterBar` component in `frontend/src/components/tasks/LogFilterBar.svelte`
- [ ] T017 [P] [US1] Create `LogEntryRow` component in `frontend/src/components/tasks/LogEntryRow.svelte`
- [ ] T018 [US1] Create `TaskLogPanel` component in `frontend/src/components/tasks/TaskLogPanel.svelte`
- [ ] T019 [US1] Refactor `TaskLogViewer` to use `TaskLogPanel` in `frontend/src/components/TaskLogViewer.svelte`
- [ ] T020 [US1] Update `TaskRunner` to pass filter parameters to WebSocket in `frontend/src/components/TaskRunner.svelte`
- [ ] T021 [US1] Verify implementation matches ux_reference.md (Happy Path & Errors)

**Checkpoint**: User Story 1 complete - real-time filtered logging is functional.

---

## Phase 5: User Story 3 - Component Attribution (Priority: P2)

**Goal**: Migrate plugins to use the new `TaskContext` and `TaskLogger`.

**Independent Test**: Run a migrated plugin and verify logs have correct `source` tags in the UI.

### Implementation for User Story 3

- [ ] T022 [P] [US3] Migrate `BackupPlugin` to use `TaskContext` in `backend/src/plugins/backup.py`
- [ ] T023 [P] [US3] Migrate `MigrationPlugin` to use `TaskContext` in `backend/src/plugins/migration.py`
- [ ] T024 [P] [US3] Migrate `GitPlugin` to use `TaskContext` in `backend/src/plugins/git_plugin.py`
- [ ] T025 [US3] Verify implementation matches ux_reference.md (Happy Path & Errors)

---

## Phase 6: Polish & Cross-Cutting Concerns

**Purpose**: Improvements that affect multiple user stories

- [ ] T026 [P] Add unit tests for `LogPersistenceService` in `backend/tests/test_log_persistence.py`
- [ ] T027 [P] Add unit tests for `TaskLogger` and `TaskContext` in `backend/tests/test_task_logger.py`
- [ ] T028 [P] Update `docs/plugin_dev.md` with new logging instructions
- [ ] T029 Final verification of all success criteria (SC-001 to SC-004)

---

## Dependencies & Execution Order

### Phase Dependencies

- **Setup (Phase 1)**: No dependencies.
- **Foundational (Phase 2)**: Depends on Phase 1.
- **User Stories (Phase 3-5)**: Depend on Phase 2. US2 (Persistence) is prioritized as it's the foundation for historical logs.
- **Polish (Phase 6)**: Depends on all user stories.

### Parallel Opportunities

- T002, T003, T004 can run in parallel.
- T010, T011 can run in parallel.
- T016, T017 can run in parallel.
- Plugin migrations (T022-T024) can run in parallel.

---

## Implementation Strategy

### MVP First (User Story 2)

1. Complete Setup & Foundational phases.
2. Implement US2 (Persistence & API).
3. **STOP and VALIDATE**: Verify logs are saved and retrieved after restart.

### Incremental Delivery

1. Add US1 (Real-time & UI) → Test filtering.
2. Add US3 (Plugin Migration) → Test source attribution.