docs(02-03): complete per-route SEO metadata plan

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.planning/STATE.md

@@ -3,15 +3,15 @@ gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
 status: executing
-stopped_at: Completed 02-01-PLAN.md
-last_updated: "2026-04-08T14:23:39.103Z"
+stopped_at: Completed 02-03-PLAN.md
+last_updated: "2026-04-08T14:25:59.906Z"
 last_activity: 2026-04-08 -- Phase 2 planning complete
 progress:
   total_phases: 3
   completed_phases: 1
   total_plans: 5
-  completed_plans: 3
-  percent: 60
+  completed_plans: 4
+  percent: 80
 ---
 
 # Project State
@@ -53,6 +53,7 @@ Progress: [░░░░░░░░░░] 0%
 
 *Updated after each plan completion*
 | Phase 02 P01 | 394s | 2 tasks | 6 files |
+| Phase 02-ssr-shell P03 | 48s | 1 tasks | 6 files |
 
 ## Accumulated Context
 
@@ -67,6 +68,7 @@ Recent decisions affecting current work:
 - Init: Static TS data files under `data/` (no @nuxt/content needed)
 - [Phase 02]: Brand color #85cb85 as Nuxt UI primary via CSS @theme + app.config.ts
 - [Phase 02]: Emojis stripped from migrated i18n translations for clean SSR
+- [Phase 02-ssr-shell]: JSON-LD values hardcoded per threat model T-02-06
 
 ### Pending Todos
 
@@ -80,6 +82,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-04-08T14:23:39.100Z
-Stopped at: Completed 02-01-PLAN.md
+Last session: 2026-04-08T14:25:59.904Z
+Stopped at: Completed 02-03-PLAN.md
 Resume file: None