feat: Follow system + tier config page (M022/S02)

- CreatorFollow model + pure SQL migration 022
- Follow router: POST/DELETE /follows/{creator_id}, GET /follows/me, GET /follows/{id}/status
- follower_count on creator detail endpoint
- Follow button on CreatorDetail (authenticated users only)
- CreatorTiers page with Free/Pro/Premium cards, Coming Soon modals
- Tiers link in creator sidebar nav
- Route /creator/tiers (protected)

.gsd/STATE.md

@@ -2,28 +2,28 @@
 
 **Active Milestone:** M022: Creator Tools & Personality
 **Active Slice:** S02: [A] Follow System + Tier UI (Demo Placeholders)
-**Phase:** planning
+**Phase:** evaluating-gates
 **Requirements Status:** 0 active · 0 validated · 0 deferred · 0 out of scope
 
 ## Milestone Registry
-- ✅ **M001:** Chrysopedia Foundation - Infrastructure, Pipeline Core, and Skeleton UI
-- ✅ **M002:** M002:
-- ✅ **M003:** M003:
-- ✅ **M004:** M004:
-- ✅ **M005:** M005:
-- ✅ **M006:** M006:
-- ✅ **M007:** M007:
-- ✅ **M008:** M008:
+- ✅ **M001:** Chrysopedia Foundation — Infrastructure, Pipeline Core, and Skeleton UI
+- ✅ **M002:** M002: Chrysopedia Deployment — GitHub, ub01 Docker Stack, and Production Wiring
+- ✅ **M003:** M003: Domain + DNS + Per-Stage LLM Model Routing
+- ✅ **M004:** M004: UI Polish, Bug Fixes, Technique Page Redesign, and Article Versioning
+- ✅ **M005:** M005: Pipeline Dashboard, Technique Page Redesign, Key Moment Cards
+- ✅ **M006:** M006: Admin Nav, Pipeline Log Views, Commit SHA, Tag Polish, Topics Redesign, Footer
+- ✅ **M007:** M007: Pipeline Transparency, Auto-Ingest, Admin UX Polish, and Mobile Fixes
+- ✅ **M008:** M008: Credibility Debt Cleanup — Broken Links, Test Data, Jargon, Empty Metrics
 - ✅ **M009:** Homepage & First Impression
 - ✅ **M010:** Discovery, Navigation & Visual Identity
-- ✅ **M011:** M011:
-- ✅ **M012:** M012:
-- ✅ **M013:** M013:
-- ✅ **M014:** M014:
-- ✅ **M015:** M015:
-- ✅ **M016:** M016:
-- ✅ **M017:** M017:
-- ✅ **M018:** M018:
+- ✅ **M011:** M011: Interaction Polish, Navigation & Accessibility
+- ✅ **M012:** M012: Multi-Field Composite Search & Sort Controls
+- ✅ **M013:** M013: Prompt Quality Toolkit — LLM Fitness, Scoring, and Automated Optimization
+- ✅ **M014:** M014: Multi-Source Technique Pages — Nested Sections, Composition, Citations, and Section Search
+- ✅ **M015:** M015: Social Proof, Freshness Signals & Admin UX
+- ✅ **M016:** M016: Visual Identity & Reading Experience
+- ✅ **M017:** M017: Creator Profile Page — Hero, Stats, Featured Technique & Admin Editing
+- ✅ **M018:** M018: Phase 2 Research & Documentation — Site Audit and Forgejo Wiki Bootstrap
 - ✅ **M019:** Foundations — Auth, Consent & LightRAG
 - ✅ **M020:** Core Experiences — Player, Impersonation & Knowledge Routing
 - ✅ **M021:** Intelligence Online — Chat, Chapters & Search Cutover
@@ -39,4 +39,4 @@
 - None
 
 ## Next Action
-Slice S02 has a plan file but no tasks. Add tasks to the plan.
+Evaluate 3 quality gate(s) for S02 before execution.