feat(P2): Nova rebrand — code/env-vars/consumer-path (REQ-158/159/160)

core/env.py dual-read helper (D-108); 21 ACDL_*→NOVA_* env vars migrated
across core/scripts/adapters/tests/workflows + .env/.env.secrets (key
rename, values stay). G-106 binding: run_platform.sh:288-289 +
regression_verify.py:309-312 dual-read (NOVA first, ACDL fallback).
G-108 binding: Gitea NOVA_* secrets created via API + workflow secrets:
refs updated (deploy.yml + modules-lifecycle.yml, .gitea + .github).
acdl_tagging.py→nova_tagging.py (D-109 warn mode, nova:* enforced).
.acdl/→.nova/ consumer path (resolver + deploy workflow + schema +
tests + docs). Test fixtures updated; pytest + run_ci.sh PASS.

---ci---
project: acdl
phase: 2
milestone: v1.15
status: execute
---/ci---

core/contract_resolver.py

@@ -36,6 +36,16 @@ import sys
 import yaml
 import jsonschema
 
+# Ensure the repo root (parent of core/) is on sys.path so `from core
+# import env` resolves to THIS package when contract_resolver.py is run
+# as a script (python3 core/contract_resolver.py) — otherwise an
+# editable-installed third-party `core` package can shadow it.
+_REPO_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+if _REPO_ROOT not in sys.path:
+    sys.path.insert(0, _REPO_ROOT)
+
+from core import env
+
 
 def _load_env(env_name, repo_root):
     """Load the environment onboarding JSON for env_name.
@@ -620,9 +630,10 @@ if __name__ == "__main__":
         idx = sys.argv.index("--environment")
         if idx + 1 < len(sys.argv):
             env_override = sys.argv[idx + 1]
-    # Also honor the ACDL_ENVIRONMENT_OVERRIDE env var (used by run_platform.sh).
-    if env_override is None and os.environ.get("ACDL_ENVIRONMENT_OVERRIDE"):
-        env_override = os.environ["ACDL_ENVIRONMENT_OVERRIDE"]
+    # Also honor the NOVA_ENVIRONMENT_OVERRIDE env var (used by run_platform.sh).
+    # Dual-read via core/env.py: NOVA_* preferred, ACDL_* fallback until P5.
+    if env_override is None and env.get_env("ENVIRONMENT_OVERRIDE"):
+        env_override = env.get_env("ENVIRONMENT_OVERRIDE")
     result = resolve(contract_path, environment_override=env_override)
     with open(out_path, "w") as fh:
         json.dump(result, fh, indent=2)