docs(01-02): complete database schema plan

Tasks completed: 3/3
- Create database migration with plans and profiles
- Create seed file for development
- Document database schema

SUMMARY: .planning/phases/01-foundation-auth/01-02-SUMMARY.md

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.planning/STATE.md

@@ -10,28 +10,28 @@ See: .planning/PROJECT.md (updated 2026-01-30)
 ## Current Position
 
 Phase: 1 of 10 (Foundation & Auth)
-Plan: 0 of TBD (planning not started)
+Plan: 2 of 6 (Database Schema)
-Status: Ready to plan
+Status: In progress
-Last activity: 2026-01-31 — Roadmap created with 10 phases, 100% requirement coverage
+Last activity: 2026-01-31 — Completed 01-02-PLAN.md (Database Schema)
 
-Progress: [░░░░░░░░░░] 0%
+Progress: [█░░░░░░░░░] ~3% (2/~60 plans estimated)
 
 ## Performance Metrics
 
 **Velocity:**
-- Total plans completed: 0
+- Total plans completed: 1
-- Average duration: N/A
+- Average duration: 5min
-- Total execution time: 0.0 hours
+- Total execution time: 0.08 hours
 
 **By Phase:**
 
 | Phase | Plans | Total | Avg/Plan |
 |-------|-------|-------|----------|
-| - | - | - | - |
+| 01-foundation-auth | 1 | 5min | 5min |
 
 **Recent Trend:**
-- Last 5 plans: N/A
+- Last 5 plans: 01-02 (5min)
-- Trend: N/A
+- Trend: N/A (need more data)
 
 *Updated after each plan completion*
 
@@ -47,6 +47,9 @@ Recent decisions affecting current work:
 - Initial: Onboarding progressivo (Evita abbandono per "troppo da fare" al primo accesso)
 - Initial: Automazione configurabile (Costruisce fiducia gradualmente, dall'approval all'autopilot)
 - Initial: Headless architecture (Prepara per app native senza riscrivere logica)
+- 01-02: tenant_id in profiles, not JWT (simpler for v1)
+- 01-02: Plans seeded in migration, not seed file (always exist)
+- 01-02: JSONB features for flexible plan limits
 
 ### Pending Todos
 
@@ -55,7 +58,7 @@ None yet.
 ### Blockers/Concerns
 
 **Research-identified risks to address early:**
-- Phase 1: Implement RLS multi-tenant isolation from day 1 (no retrofitting)
+- Phase 1: Implement RLS multi-tenant isolation from day 1 (no retrofitting) **[DONE in 01-02]**
 - Phase 2: Facebook API rate limits (200 DM/hour) — need exponential backoff + monitoring
 - Phase 5: AI cost management — implement caching, freemium limits, per-user tracking
 - Phase 6: Job queue reliability critical — BullMQ on Redis, not setTimeout
@@ -64,6 +67,6 @@ None yet.
 ## Session Continuity
 
 Last session: 2026-01-31
-Stopped at: Roadmap and STATE.md created, traceability updated
+Stopped at: Completed 01-02-PLAN.md (Database Schema)
 Resume file: None
-Next step: Execute `/gsd:plan-phase 1` to create detailed plans for Foundation & Auth
+Next step: Execute 01-03-PLAN.md (Supabase Client Setup) or next plan in phase

.planning/phases/01-foundation-auth/01-02-SUMMARY.md

@@ -0,0 +1,116 @@
+---
+phase: 01-foundation-auth
+plan: 02
+subsystem: database
+tags: [supabase, postgresql, rls, multi-tenant, auth]
+
+# Dependency graph
+requires:
+  - phase: none
+    provides: First database schema
+provides:
+  - plans table with Free, Creator, Pro tiers
+  - profiles table with auto-creation trigger
+  - RLS policies for tenant isolation
+  - Helper functions for plan feature checking
+affects: [01-03-supabase-client, 01-04-auth-ui, 02-social-accounts]
+
+# Tech tracking
+tech-stack:
+  added: []
+  patterns:
+    - "RLS with (SELECT auth.uid()) subquery for performance"
+    - "SECURITY DEFINER functions for bypassing RLS"
+    - "Auto-profile creation via auth.users trigger"
+    - "JSONB for flexible feature flags"
+
+key-files:
+  created:
+    - supabase/migrations/001_initial_auth_setup.sql
+    - supabase/seed.sql
+    - docs/DATABASE.md
+  modified: []
+
+key-decisions:
+  - "tenant_id in profiles table, not JWT (simpler for v1)"
+  - "Plans seeded in migration, not seed file (always exist)"
+  - "JSONB features for flexible plan limits"
+  - "Italian display names for i18n readiness"
+
+patterns-established:
+  - "RLS Policy Pattern: Use (SELECT auth.uid()) for 99% performance improvement"
+  - "Auto-profile Pattern: Trigger creates profile on auth.users insert"
+  - "Helper Function Pattern: SECURITY DEFINER for cross-table queries"
+
+# Metrics
+duration: 5min
+completed: 2026-01-31
+---
+
+# Phase 01 Plan 02: Database Schema Summary
+
+**Multi-tenant auth schema with plans table, profiles table, RLS policies, and auto-profile trigger for Supabase**
+
+## Performance
+
+- **Duration:** 5 min
+- **Started:** 2026-01-31T03:24:00Z
+- **Completed:** 2026-01-31T03:29:00Z
+- **Tasks:** 3
+- **Files created:** 3
+
+## Accomplishments
+
+- Created plans table with Free, Creator, Pro tiers (0, 19, 49 EUR/month)
+- Created profiles table with tenant_id for multi-tenant isolation
+- Enabled RLS on all tables with optimized policies
+- Added auto-profile creation trigger on user signup
+- Added helper functions for plan limit checking
+- Documented complete schema with security notes
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Create database migration with plans and profiles** - `f271d7f` (feat)
+2. **Task 2: Create seed file for development** - `16b3053` (feat)
+3. **Task 3: Document database schema** - `fd56b12` (docs)
+
+## Files Created
+
+- `supabase/migrations/001_initial_auth_setup.sql` - Complete auth schema with RLS
+- `supabase/seed.sql` - Development verification seed
+- `docs/DATABASE.md` - Schema documentation with examples
+
+## Decisions Made
+
+1. **tenant_id in profiles, not JWT** - Simpler approach for v1, avoids JWT refresh complexity
+2. **Plans in migration, not seed** - Plans must always exist, migration guarantees this
+3. **JSONB for features** - Flexible structure for plan limits, easy to extend
+4. **Italian display names** - i18n ready from day 1
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+
+None.
+
+## User Setup Required
+
+**Database migration must be applied to Supabase.** See `docs/DATABASE.md` for:
+- SQL Editor copy/paste method
+- Supabase CLI method
+- Direct psql connection method
+
+## Next Phase Readiness
+
+- Schema ready for Supabase project creation (01-03)
+- Plans table ready for auth flow (01-04)
+- Profiles auto-creation ready for signup testing
+- RLS policies ready for security verification
+
+---
+*Phase: 01-foundation-auth*
+*Completed: 2026-01-31*