chore(init): reinitialize config.json — add personas/sessions/parallelization

---ci---
project: oy
phase: 9
milestone: v0.1
status: complete
---/ci---

Config audit against init.md requirements:
- All required fields present and valid (projects, active_project, autonomy, release, secrets, ship)
- Added optional fields for run.md compatibility:
  - personas.enabled=true, territory_enforcement=warn
  - sessions.session_isolation=branch
  - parallelization.enabled=false, max_concurrent_agents=1
- Forge bootstrapped (gitea/git.cloudinit.dev/oy/openyield)
- Secrets: GITEA_TOKEN in .ciagent/.env.secrets (0600, gitignored)
- All 7 .ciagent/oy/ files present (PROJECT, ARCHITECTURE, ROADMAP, REQUIREMENTS, PLANS, RESEARCH, PERSONAS)
- JSON validated

.ciagent/config.json

@@ -32,5 +32,16 @@
     "allow_skip": false,
     "release_blocking": false,
     "max_release_retries": 3
+  },
+  "personas": {
+    "enabled": true,
+    "territory_enforcement": "warn"
+  },
+  "sessions": {
+    "session_isolation": "branch"
+  },
+  "parallelization": {
+    "enabled": false,
+    "max_concurrent_agents": 1
   }
 }