docs(01-02): complete core models and helpers plan — SUMMARY, STATE, ROADMAP updated

- 01-02-SUMMARY.md created with 7 files, 2 tasks, 1 auto-fix deviation
- STATE.md: progress 25% (2/8 plans), 2 new decisions added
- ROADMAP.md: phase 1 updated (2/8 summaries, In Progress)
- REQUIREMENTS.md: FOUND-05/06/07/08 marked complete

.planning/STATE.md

@@ -3,14 +3,14 @@ gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
 status: planning
-stopped_at: Completed 01-foundation-01-PLAN.md
-last_updated: "2026-04-02T10:04:03.489Z"
+stopped_at: Completed 01-foundation-02-PLAN.md
+last_updated: "2026-04-02T10:07:59.501Z"
 last_activity: 2026-04-02 — Roadmap created, requirements mapped, all 42 v1 requirements assigned to phases
 progress:
   total_phases: 5
   completed_phases: 0
   total_plans: 8
-  completed_plans: 1
+  completed_plans: 2
   percent: 13
 ---
 
@@ -51,6 +51,7 @@ Progress: [█░░░░░░░░░] 13%
 
 *Updated after each plan completion*
 | Phase 01-foundation P01 | 4 | 2 tasks | 14 files |
+| Phase 01-foundation P02 | 1 | 2 tasks | 7 files |
 
 ## Accumulated Context
 
@@ -66,6 +67,8 @@ Recent decisions affecting current work:
 - [Phase 01-foundation]: Upgraded MSAL from 4.83.1 to 4.83.3 — Extensions.Msal 4.83.3 requires MSAL >= 4.83.3; minor patch with no behavioral difference
 - [Phase 01-foundation]: Test project targets net10.0-windows with UseWPF=true — required to reference WPF main project; net10.0 is framework-incompatible
 - [Phase 01-foundation]: Solution uses .slnx format (new .NET 10 XML solution) — dotnet new sln creates .slnx by default in .NET 10 SDK
+- [Phase 01-foundation]: TenantProfile is a plain mutable class (not record) — System.Text.Json requires settable properties; field names Name/TenantUrl/ClientId match JSON schema exactly
+- [Phase 01-foundation]: SharePointPaginationHelper uses [EnumeratorCancellation] on ct — required for correct WithCancellation() forwarding in async iterators
 
 ### Pending Todos
 
@@ -79,6 +82,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-04-02T10:04:03.486Z
-Stopped at: Completed 01-foundation-01-PLAN.md
+Last session: 2026-04-02T10:07:59.499Z
+Stopped at: Completed 01-foundation-02-PLAN.md
 Resume file: None