docs: create milestone v2.0 roadmap (5 phases)

.planning/STATE.md

@@ -5,9 +5,9 @@ milestone_name: Platform Foundation
 status: planning
 stopped_at: null
 last_updated: "2026-04-03"
-last_activity: 2026-04-03 — Milestone v2.0 started
+last_activity: 2026-04-03 — v2.0 roadmap created (Phases 14-18)
 progress:
-  total_phases: 0
+  total_phases: 5
   completed_phases: 0
   total_plans: 0
   completed_plans: 0
@@ -21,21 +21,23 @@ progress:
 See: .planning/PROJECT.md (updated 2026-04-03)
 
 **Core value:** Help people make better gear decisions — discover what others use, compare real-world data, and see how a potential buy affects your setup before committing.
-**Current focus:** v2.0 Platform Foundation — Defining requirements
+**Current focus:** v2.0 Platform Foundation — Phase 14 (PostgreSQL Migration)
 
 ## Current Position
 
-Phase: Not started (defining requirements)
-Plan: —
-Status: Defining requirements
-Last activity: 2026-04-03 — Milestone v2.0 started
+Phase: 14 of 18 (PostgreSQL Migration)
+Plan: 0 of ? in current phase
+Status: Ready to plan
+Last activity: 2026-04-03 — v2.0 roadmap created (Phases 14-18)
+
+Progress: [----------] 0% (v2.0 milestone)
 
 ## Performance Metrics
 
 **Velocity:**
-- Total plans completed: 0
-- Average duration: —
-- Total execution time: —
+- Total plans completed: 0 (v2.0 milestone)
+- Average duration: --
+- Total execution time: --
 
 *Updated after each plan completion*
 
@@ -44,11 +46,11 @@ Last activity: 2026-04-03 — Milestone v2.0 started
 ### Decisions
 
 Key decisions made during v2.0 planning:
-- Platform pivot: single-user → multi-user with discovery-first approach
-- External auth provider (self-hosted, open-source) — avoid in-house auth burden
-- SQLite → Postgres migration — multi-user concurrency + auth provider dependency
-- Structured UGC only — ratings and predefined fields, no freeform text until moderation exists
-- Global item database seeded from manufacturer data, enriched by user contributions
+- Platform pivot: single-user to multi-user with discovery-first approach
+- External auth provider (self-hosted, open-source) — Logto vs Authentik OPEN decision
+- SQLite to Postgres migration — required by auth provider and multi-user concurrency
+- Structured UGC only — ratings and predefined fields, no freeform text until moderation
+- Separate globalItems table — not a flag on user items table
 - Single-user SQLite mode diverges at v2.0 boundary
 
 ### Pending Todos
@@ -57,10 +59,11 @@ None active.
 
 ### Blockers/Concerns
 
-None active.
+- Auth provider decision (Logto vs Authentik) must be resolved before Phase 15 planning
+- Phase 14 is a full schema rewrite touching 6 services, 7 routes, 19 MCP tools, all tests
 
 ## Session Continuity
 
 Last session: 2026-04-03
-Stopped at: Defining requirements for v2.0
+Stopped at: v2.0 roadmap created with 5 phases (14-18) covering 30 requirements
 Resume file: None