docs(01-02): complete custom post type plan

Tasks completed: 2/2
- Register job_offer custom post type
- Add capability mapping filter for ownership enforcement

SUMMARY: .planning/phases/01-foundation-setup/01-02-SUMMARY.md

.planning/ROADMAP.md

@@ -28,7 +28,7 @@ None
 
 Plans:
 - [ ] 01-01: Plugin structure and activation hooks
-- [ ] 01-02: Register `job_offer` CPT with capabilities
+- [x] 01-02: Register `job_offer` CPT with capabilities
 - [ ] 01-03: Register `ddhh_provider` role and ACF fields
 
 ### Phase 2: Provider Registration & Auth
@@ -107,7 +107,7 @@ Plans:
 
 | Phase | Plans Complete | Status | Completed |
 |-------|----------------|--------|-----------|
-| 1. Foundation & Setup | 0/3 | Not started | - |
+| 1. Foundation & Setup | 1/3 | In progress | - |
 | 2. Provider Registration & Auth | 0/4 | Not started | - |
 | 3. Job Management Core | 0/4 | Not started | - |
 | 4. Job Deactivation System | 0/2 | Not started | - |