docs(02-03): complete common auth seams plan

Tasks completed: 2/2
- Define common OIDC and secure store contracts
- Add JVM and Wasm actuals

SUMMARY: .planning/phases/02-authentication-foundation/02-03-SUMMARY.md

.planning/STATE.md

@@ -2,15 +2,15 @@
 gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
-current_plan: 2
+current_plan: 3
 status: executing
-last_updated: "2026-04-28T11:44:38.794Z"
+last_updated: "2026-04-28T11:51:48.893Z"
 progress:
   total_phases: 11
   completed_phases: 1
   total_plans: 14
-  completed_plans: 9
-  percent: 64
+  completed_plans: 10
+  percent: 71
 ---
 
 # Project State: Recipe
@@ -26,12 +26,12 @@ progress:
 ## Current Position
 
 Phase: 02 (authentication-foundation) — EXECUTING
-Plan: 2 of 7
+Plan: 3 of 7
 **Current focus:** Phase 02 — authentication-foundation
-**Current plan:** 2
+**Current plan:** 3
 **Status:** Ready to execute
-**Phase progress:** 2 / 7 plans complete
-**Progress bar:** `[██████░░░░] 64%`
+**Phase progress:** 3 / 7 plans complete
+**Progress bar:** `[███████░░░] 71%`
 
 ## Performance Metrics
 
@@ -41,8 +41,9 @@ Plan: 2 of 7
 | v1 requirements | 72 |
 | Coverage | 100% |
 | Phases complete | 1 |
-| Plans complete | 9 |
+| Plans complete | 10 |
 | Phase 02 P02 | 13min | 3 tasks | 14 files |
+| Phase 02-authentication-foundation P03 | 31m | 2 tasks | 8 files |
 
 ## Accumulated Context
 
@@ -60,7 +61,7 @@ All locked tech-stack decisions are captured in `.planning/PROJECT.md § Key Dec
 
 ## Session Continuity
 
-**Last session:** 2026-04-28T11:44:38.789Z
+**Last session:** 2026-04-28T11:51:48.893Z
 
 **Next action:** `/gsd-execute-phase 2` — Authentication Foundation.