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---
description: "Task list for Project Launch Script implementation"
---
# Tasks: Project Launch Script
**Input**: Design documents from `/specs/003-project-launch-script/`
**Prerequisites**: plan.md (required), spec.md (required for user stories), research.md, data-model.md, contracts/
**Tests**: Manual verification as per spec.md. No automated test suite requested for this utility script.
**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/`, `run.sh` at root
## Phase 1: Setup (Shared Infrastructure)
**Purpose**: Project initialization and basic structure
- [x] T001 Create `run.sh` with basic structure and `--help` message in `run.sh`
- [x] T002 [P] Implement environment validation for `python3` (3.9+) and `npm` in `run.sh`
---
## 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
- [x] T003 Implement backend dependency check and installation logic (venv + requirements.txt) in `run.sh`
- [x] T004 Implement frontend dependency check and installation logic (node_modules) in `run.sh`
- [x] T005 Implement `SIGINT` trap and `cleanup` function for graceful shutdown in `run.sh`
**Checkpoint**: Foundation ready - user story implementation can now begin
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## Phase 3: User Story 1 - Launch Project (Priority: P1) 🎯 MVP
**Goal**: Launch backend and frontend concurrently with dependency management and graceful shutdown.
**Independent Test**: Run `./run.sh` from root. Verify both services start, are accessible on their ports, and both stop when Ctrl+C is pressed.
### Implementation for User Story 1
- [x] T006 [US1] Implement backend server startup logic with `BACKEND_PORT` support in `run.sh`
- [x] T007 [US1] Implement frontend server startup logic with `FRONTEND_PORT` support in `run.sh`
- [x] T008 [US1] Implement concurrent execution using background processes and `wait` in `run.sh`
- [x] T009 [US1] Implement `--skip-install` flag logic to bypass dependency checks in `run.sh`
**Checkpoint**: At this point, User Story 1 should be fully functional and testable independently.
---
## Phase 4: Polish & Cross-Cutting Concerns
**Purpose**: Improvements that affect multiple user stories
- [x] T010 [P] Add color-coded logging to distinguish between backend and frontend output in `run.sh`
- [x] T011 [P] Update project `README.md` with `run.sh` usage instructions
- [x] T012 Run `quickstart.md` validation for `run.sh`
---
## Dependencies & Execution Order
### Phase Dependencies
- **Setup (Phase 1)**: No dependencies - can start immediately
- **Foundational (Phase 2)**: Depends on Setup completion - BLOCKS all user stories
- **User Stories (Phase 3+)**: All depend on Foundational phase completion
- **Polish (Final Phase)**: Depends on all desired user stories being complete
### User Story Dependencies
- **User Story 1 (P1)**: Can start after Foundational (Phase 2) - No dependencies on other stories
### Within Each User Story
- Core implementation before integration
- Story complete before moving to next priority
### Parallel Opportunities
- T002 can run in parallel with T001 (though both edit `run.sh`, they are logically independent)
- T010, T011 can run in parallel
---
## Parallel Example: User Story 1
```bash
# Implementation tasks for User Story 1 are mostly sequential in run.sh
# but can be developed in separate blocks:
Task: "Implement backend server startup logic with BACKEND_PORT support in run.sh"
Task: "Implement frontend server startup logic with FRONTEND_PORT support in run.sh"
```
---
## Implementation Strategy
### MVP First (User Story 1 Only)
1. Complete Phase 1: Setup
2. Complete Phase 2: Foundational (CRITICAL - blocks all stories)
3. Complete Phase 3: User Story 1
4. **STOP and VALIDATE**: Test User Story 1 independently
5. Deploy/demo if ready
### Incremental Delivery
1. Complete Setup + Foundational → Foundation ready
2. Add User Story 1 → Test independently → Deploy/Demo (MVP!)
3. Each story adds value without breaking previous stories
---
## Notes
- [P] tasks = different files or independent logic blocks
- [Story] label maps task to specific user story for traceability
- Each user story should be independently completable and testable
- Commit after each task or logical group
- Stop at any checkpoint to validate story independently