Rename: jarvisChat → cAIc (product name)

- jarvisChat/JarvisChat/jarvischat → cAIc/cAIc/caic (branded/lower)
- JARVISCHAT_ env vars → CAIC_
- jc- script/config prefix → caic-
- jarvis_rag → caic_rag
- jarvischat.db / volumes → caic.db / caic_*
- AMQP vhost/user jarvischat → caic
- Syslog, loggers, docstrings all updated
- 47 files, zero stale references, 148 tests pass

tests/test_completions.py

@@ -13,8 +13,8 @@ from security import SESSIONS, PIN_ATTEMPTS, RATE_EVENTS
 
 
 def make_client(tmp_path: Path) -> TestClient:
-    os.environ["JARVISCHAT_ADMIN_PIN"] = "1234"
-    db.DB_PATH = tmp_path / "jarvischat-completions.db"
+    os.environ["CAIC_ADMIN_PIN"] = "1234"
+    db.DB_PATH = tmp_path / "caic-completions.db"
     SESSIONS.clear()
     PIN_ATTEMPTS.clear()
     RATE_EVENTS.clear()
@@ -22,7 +22,7 @@ def make_client(tmp_path: Path) -> TestClient:
     return TestClient(app.app, raise_server_exceptions=False)
 
 
-TEST_API_KEY = "test-sk-jarvischat-completions"
+TEST_API_KEY = "test-sk-caic-completions"
 
 
 def _auth_headers(extra: dict = None) -> dict: