chore(P00): rename orch-engine to orca, configure gitea + coreci (v0.1)

---ci---
project: orca
phase: 0
milestone: v0.1
status: execute
---/ci---

.ciagent/config.json

@@ -2,10 +2,10 @@
   "version": 1,
   "projects": [
     {
-      "slug": "orch-engine",
-      "name": "Orchestration Engine",
-      "description": "Offline/CLI-first orchestration engine inspired by HashiCorp Nomad, far simpler than Kubernetes",
-      "milestone": "v1.0",
+      "slug": "orca",
+      "name": "Orca",
+      "description": "Offline/CLI-first orchestration engine (Orca) — Nomad-inspired, far simpler than Kubernetes",
+      "milestone": "v0.1",
       "phase": 0,
       "milestone_type": "feature",
       "default_branch": "main",
@@ -22,8 +22,8 @@
       }
     }
   ],
-  "active_project": "orch-engine",
-  "active_projects": ["orch-engine"],
+  "active_project": "orca",
+  "active_projects": ["orca"],
   "autonomy": {
     "level": "full",
     "decision_confidence_threshold": 0.60,
@@ -69,16 +69,33 @@
     "session_isolation": "branch"
   },
   "ci": {
-    "provider": "gitea",
+    "provider": "coreci",
+    "allowed_providers": ["coreci"],
     "gitea": {
       "url": "https://git.cloudinit.dev",
       "owner": "coreci",
-      "repo": "orch-engine",
+      "repo": "orca",
       "token_env": "GITEA_TOKEN"
+    },
+    "coreci": {
+      "url": "https://git.cloudinit.dev/coreci/coreci",
+      "config_file": ".coreci.yml"
+    },
+    "tools": {
+      "gitea_cli": "tea",
+      "allowed_commands": [
+        "tea repos create",
+        "tea repos list",
+        "tea pr create",
+        "tea pr list",
+        "tea releases create",
+        "tea issues create"
+      ]
     }
   },
   "repository": {
     "remote": "origin",
+    "url": "https://git.cloudinit.dev/coreci/orca.git",
     "main_branch": "main"
   },
   "commands": {