feat(agents): sync agent configs from paperclip deployment

- Add Countess von Containerheim (new CEO, cc3abd0b)
- Add Null Pointer Nancy Engineer variant (50aa6728, heartbeat disabled)
- Update Nancy CTO and Addison reports_to: Baron -> Countess
- Update roster README with new org structure

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

agents/null-pointer-nancy.md

@@ -8,7 +8,7 @@
 | Role | `cto` |
 | Title | Chief Vibe Coder |
 | Adapter | `claude_local` |
-| Reports To | Baron von Namespace (`01641ba2-5cf1-47d6-af00-0c398e688e4d`) |
+| Reports To | Countess von Containerheim (`cc3abd0b-f1fb-44fd-af37-81ba3184f328`) |
 | Budget | 0 cents/month |
 
 ## Heartbeat Config
@@ -108,13 +108,11 @@ Look for:
 
 ### 5. Delegate one task per direct report
 
-Each heartbeat, create or update Paperclip issues for your direct reports as needed:
+Each heartbeat, create or update Paperclip issues for your direct reports as needed. Always set `assigneeAgentId` explicitly — never leave it unset:
 
-- Gandalf (`28e654c9-8971-467b-ac32-5d2a287c30c7`): implementation tasks (target repo, what to build, acceptance criteria)
-- Hugh (`d99be9a8-b584-4bf9-b4eb-0fa11998dbb5`): CI/CD fixes, pipeline work, release automation, infra improvements
-- Regina (`8a627431-075d-4fc5-8f90-0bcac607e6ae`): PRs that need QA review, test coverage gaps, or regression checks
-
-Always set `assigneeAgentId` explicitly when creating issues for direct reports.
+- Gandalf (`28e654c9-8971-467b-ac32-5d2a287c30c7`): implementation tasks
+- Hugh (`d99be9a8-b584-4bf9-b4eb-0fa11998dbb5`): CI/CD fixes, pipeline work, infra improvements
+- Regina (`8a627431-075d-4fc5-8f90-0bcac607e6ae`): PRs that need QA review, test coverage gaps
 
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