feat(harness): P2 — delete legacy customization keys & paths (rcust)

a) compose.ccci.yml is FIRST-CLASS: the harness auto-copies tests/<recipe>/
   compose.ccci.yml into the run's recipe checkout (ABRA_DIR-aware, lifecycle.
   provide_ccci_overlay) and auto-chaoses the pinned base deploy on its presence
   (kills the R7 implicit coupling). ghost/discourse install_steps.sh (copy-only
   boilerplate) deleted; CHAOS_BASE_DEPLOY removed from both metas + the registry.

b) install-time deps wiring is the ONLY mode: deps with DEPS provision BEFORE the
   single deploy; legacy post-deploy provisioning + the setup_custom_tests.sh
   invocation machinery deleted. lasuite-docs migrated to install_steps.sh OIDC
   wiring (same env names/values as the old hook — only the timing moved);
   lasuite-drive's remaining post-deploy MinIO bucket one-shot moved to ops.py
   pre_install; both setup_custom_tests.sh files deleted; OIDC_AT_INSTALL removed
   from drive/meet metas + the registry.

c) SKIP_GENERIC meta key deleted (zero users). Env form CCCI_SKIP_GENERIC* stays
   as the documented dev-only escape hatch; when active in a drone CI run the
   orchestrator prints a loud !! warning (manifest embedding lands in P5).

d) conftest cleanup: dead pre-deploy-once fixtures deployed/deployed_app deleted
   (zero users), app_domain + _short + _wait_healthy dropped (only users were the
   deleted fixtures); deps_apps+deps_creds consolidated into ONE deps fixture
   (entries expose .domain etc. as attributes; dict access intact); the 6 lasuite
   test files renamed deps_creds->deps (fixture name only — assertions and flows
   byte-identical). requires_deps marker + F2-11 skip-report plumbing unchanged.

Registry is now exactly the 14 final keys; docs §4 table regenerated. Stale
setup_custom_tests/OIDC_AT_INSTALL prose in docstrings/comments/assert MESSAGES
updated (no assert logic or expected value touched).

Verified on cc-ci: cc-ci-run -m pytest tests/unit -q -> 175 passed; scripts/lint.sh -> PASS.

tests/lasuite-meet/functional/test_meeting_flow.py

@@ -36,8 +36,8 @@ def _b64url(seg: str) -> bytes:
     return base64.urlsafe_b64decode(seg + "=" * ((4 - len(seg) % 4) % 4))
 
 
-def _creds(deps_creds: dict) -> dict:
-    kc = deps_creds["keycloak"]
+def _creds(deps: dict) -> dict:
+    kc = deps["keycloak"]
     return {
         "provider": "keycloak",
         "provider_domain": kc["domain"],
@@ -55,10 +55,10 @@ def _creds(deps_creds: dict) -> dict:
 
 
 @pytest.mark.requires_deps
-def test_create_room_get_livekit_token_and_read_back(live_app, deps_creds):
-    assert "keycloak" in deps_creds, f"keycloak creds missing; got {list(deps_creds.keys())}"
+def test_create_room_get_livekit_token_and_read_back(live_app, deps):
+    assert "keycloak" in deps, f"keycloak creds missing; got {list(deps.keys())}"
     base = f"https://{live_app}"
-    token = sso.oidc_password_grant(_creds(deps_creds))
+    token = sso.oidc_password_grant(_creds(deps))
     assert isinstance(token, str) and token.count(".") == 2, "OIDC access token is not a JWT"
     auth = {"Authorization": f"Bearer {token}"}