docs(01-01): complete FastAPI backend foundation plan

Tasks completed: 2/2
- Initialize Python project with uv and dependencies
- Create FastAPI application structure with health endpoint

SUMMARY: .planning/phases/01-core-infrastructure-security/01-01-SUMMARY.md

.planning/ROADMAP.md

@@ -38,7 +38,7 @@ Decimal phases appear between their surrounding integers in numeric order.
 **Plans**: 5 plans
 
 Plans:
-- [ ] 01-01-PLAN.md — FastAPI project setup with health endpoints
+- [x] 01-01-PLAN.md — FastAPI project setup with health endpoints
 - [ ] 01-02-PLAN.md — PostgreSQL database with async SQLAlchemy and Alembic
 - [ ] 01-03-PLAN.md — Security middleware (rate limiting, CSRF, headers)
 - [ ] 01-04-PLAN.md — Caddy HTTPS and database backup automation
@@ -189,7 +189,7 @@ Phases execute in numeric order: 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 →
 
 | Phase | Plans Complete | Status | Completed |
 |-------|----------------|--------|-----------|
-| 1. Core Infrastructure & Security | 0/5 | Planned | - |
+| 1. Core Infrastructure & Security | 1/5 | In progress | - |
 | 2. Overlay System Foundation | 0/TBD | Not started | - |
 | 3. Build Queue & Workers | 0/TBD | Not started | - |
 | 4. User Accounts | 0/TBD | Not started | - |

.planning/STATE.md

@@ -10,28 +10,28 @@ See: .planning/PROJECT.md (updated 2026-01-25)
 ## Current Position
 
 Phase: 1 of 9 (Core Infrastructure & Security)
-Plan: 0 of TBD in current phase
+Plan: 1 of 5 in current phase
-Status: Ready to plan
+Status: In progress
-Last activity: 2026-01-25 - Roadmap created with 9 phases
+Last activity: 2026-01-25 - Completed 01-01-PLAN.md
 
-Progress: [░░░░░░░░░░] 0%
+Progress: [█░░░░░░░░░] 2%
 
 ## Performance Metrics
 
 **Velocity:**
-- Total plans completed: 0
+- Total plans completed: 1
-- Average duration: N/A
+- Average duration: 3 min
-- Total execution time: 0 hours
+- Total execution time: 3 min
 
 **By Phase:**
 
 | Phase | Plans | Total | Avg/Plan |
 |-------|-------|-------|----------|
-| - | - | - | - |
+| 01 | 1 | 3 min | 3 min |
 
 **Recent Trend:**
-- Last 5 plans: N/A
+- Last 5 plans: 01-01 (3 min)
-- Trend: N/A
+- Trend: N/A (not enough data)
 
 *Updated after each plan completion*
 
@@ -43,6 +43,8 @@ Decisions are logged in PROJECT.md Key Decisions table.
 Recent decisions affecting current work:
 
 - [Roadmap]: 9-phase structure following research recommendations - infrastructure first, then backend systems, then user features, then polish
+- [01-01]: Used hatchling as build backend for pyproject.toml
+- [01-01]: Created root /health endpoint outside versioned API for simple health checks
 
 ### Pending Todos
 
@@ -62,6 +64,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-01-25 (roadmap creation)
+Last session: 2026-01-25T20:09:42Z
-Stopped at: Initial roadmap and state files created
+Stopped at: Completed 01-01-PLAN.md
 Resume file: None

.planning/phases/01-core-infrastructure-security/01-01-SUMMARY.md

@@ -0,0 +1,112 @@
+---
+phase: 01-core-infrastructure-security
+plan: 01
+subsystem: infra
+tags: [fastapi, pydantic, uvicorn, python, uv]
+
+# Dependency graph
+requires: []
+provides:
+  - FastAPI application entry point
+  - pydantic-settings configuration management
+  - Health check endpoints at /health and /api/v1/health
+  - Project dependencies via uv
+affects: [01-02, 01-03, 01-04, 01-05]
+
+# Tech tracking
+tech-stack:
+  added: [fastapi, uvicorn, sqlalchemy, asyncpg, pydantic, pydantic-settings, alembic, slowapi, fastapi-csrf-protect, ruff, mypy, pytest]
+  patterns: [pydantic-settings for config, environment-based docs toggle, versioned API routes]
+
+key-files:
+  created:
+    - pyproject.toml
+    - .env.example
+    - README.md
+    - backend/app/main.py
+    - backend/app/core/config.py
+    - backend/app/api/v1/router.py
+    - backend/app/api/v1/endpoints/health.py
+  modified: []
+
+key-decisions:
+  - "Used hatchling as build backend for pyproject.toml"
+  - "Created root /health endpoint outside versioned API for simple health checks"
+  - "Configured ruff with E, F, I, N, W, UP rule sets"
+
+patterns-established:
+  - "Versioned API at /api/v1 prefix"
+  - "Health endpoints with /health (basic) and /health/ready (readiness)"
+  - "Environment-based feature toggling (docs disabled in production)"
+
+# Metrics
+duration: 3min
+completed: 2026-01-25
+---
+
+# Phase 01 Plan 01: FastAPI Backend Foundation Summary
+
+**FastAPI backend initialized with uv package manager, pydantic-settings configuration, and health endpoints at /health and /api/v1/health**
+
+## Performance
+
+- **Duration:** 3 min
+- **Started:** 2026-01-25T20:06:07Z
+- **Completed:** 2026-01-25T20:09:42Z
+- **Tasks:** 2
+- **Files modified:** 13
+
+## Accomplishments
+
+- Initialized Python project with uv package manager and all required dependencies
+- Created FastAPI application with production-ready configuration management
+- Implemented health check endpoints with readiness probe placeholder
+- Configured ruff linter passing on all code
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Initialize Python project with uv and dependencies** - `300b3dd` (feat)
+2. **Task 2: Create FastAPI application structure with health endpoint** - `519333e` (feat)
+
+## Files Created/Modified
+
+- `pyproject.toml` - Project configuration with dependencies, ruff, and mypy settings
+- `.env.example` - Documented environment variables template
+- `README.md` - Basic development setup instructions
+- `backend/app/main.py` - FastAPI application entry point with root health check
+- `backend/app/core/config.py` - pydantic-settings configuration with environment parsing
+- `backend/app/api/v1/router.py` - API v1 router including health endpoints
+- `backend/app/api/v1/endpoints/health.py` - Health and readiness check endpoints
+
+## Decisions Made
+
+- Used hatchling as build backend (standard for modern Python projects)
+- Created root `/health` endpoint outside versioned API for simpler health checks
+- Used pydantic-settings `model_config` approach (Pydantic v2 style) for configuration
+- Configured comprehensive ruff rule sets: E (errors), F (pyflakes), I (isort), N (naming), W (warnings), UP (upgrades)
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+
+- uv was not installed initially - installed via curl script (expected for fresh environment)
+- hatchling required README.md to exist - created minimal README.md file
+- hatchling needed explicit package path - added `[tool.hatch.build.targets.wheel]` configuration
+
+## User Setup Required
+
+None - no external service configuration required.
+
+## Next Phase Readiness
+
+- FastAPI application structure is complete and verified
+- Ready for Plan 01-02: PostgreSQL database setup and connection pooling
+- Configuration management is in place for database URL and other settings
+
+---
+*Phase: 01-core-infrastructure-security*
+*Completed: 2026-01-25*