docs(10): add admin config UI plan (INGEST-06 gap), resolve research open questions

.planning/ROADMAP.md

@@ -344,7 +344,7 @@ Plans:
   4. DÖE is polled once on a shared, admin-configurable interval regardless of how many tenants have the module active -- never once per tenant (poll-once-fan-out-many, not the DKV single-tenant `findFirst()` pattern)
   5. Activating the module for a second tenant does not duplicate ingestion, re-trigger a redundant DÖE poll, or interfere with the first tenant's data
 
-**Plans**: 5 plans
+**Plans**: 6 plans
 
 **Wave 1**
 
@@ -366,7 +366,11 @@ Plans:
 
 - [ ] 10-05-PLAN.md — Controller + admin source-config: global ModuleGuard-gated read, admin-configurable poll interval applied live to scheduler (INGEST-06)
 
-**UI hint**: no (backend-foundation phase; results UI is Phase 11)
+**Wave 6** *(blocked on Wave 5 completion)*
+
+- [ ] 10-06-PLAN.md — Admin config UI: tender-radar-api client + settings page SourceConfigForm reading/writing GET/PUT source-config, mirroring DKV InboxConfigForm (INGEST-06 admin-UI)
+
+**UI hint**: yes (admin source-config settings form; results UI is Phase 11)
 
 ### Phase 11: Filter Engine, Results UI & Saved Searches
 
@@ -449,7 +453,7 @@ Phases execute in numeric order: 1 -> 2 -> 3 -> 4 -> 5 -> 6 -> 7 -> 8 -> 9 -> 10
 | 7. DKV Fleet Module | 6/6 | Complete   | 2026-06-27 |
 | 8. Dashboard Widgets Vollimplementierung | 4/4 | Complete   | 2026-07-01 |
 | 9. Cert Manager Module | 6/6 | Complete   | 2026-07-02 |
-| 10. Ausschreibungs-Radar Foundation & DÖE Ingestion | 0/5 | Not started | - |
+| 10. Ausschreibungs-Radar Foundation & DÖE Ingestion | 0/6 | Not started | - |
 | 11. Filter Engine, Results UI & Saved Searches | 0/TBD | Not started | - |
 | 12. Tender Notifications | 0/TBD | Not started | - |
 | 13. Scraping Adapters & Cross-Source Deduplication | 0/TBD | Not started | - |