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/regression_verify.py

@@ -32,6 +32,15 @@ from dataclasses import dataclass, field, asdict
 from pathlib import Path
 from typing import Callable, Dict, List, Optional, Tuple
 
+# Repo root on sys.path so `from core import env` resolves to THIS package
+# when regression_verify.py is run as a script (avoids editable-installed
+# third-party `core` shadow).
+_REPO_ROOT = str(Path(__file__).resolve().parent.parent)
+if _REPO_ROOT not in sys.path:
+    sys.path.insert(0, _REPO_ROOT)
+
+from core import env as _envhelper
+
 ROOT = Path(__file__).resolve().parent.parent
 CIAgent = ROOT / ".ciagent"
 
@@ -306,9 +315,13 @@ def _load_aws_env() -> Dict[str, str]:
                     continue
                 if "=" in line:
                     k, v = line.split("=", 1)
-                    if k == "ACDL_AWS_ACCESS_KEY_ID":
+                    # G-106 binding: dual-read NOVA_* first, ACDL_* fallback.
+                    # The .env.secrets keys are renamed to NOVA_* in P2; the
+                    # ACDL_* fallback covers operators who haven't rotated
+                    # their local .env.secrets yet. Removed in P5.
+                    if k == "NOVA_AWS_ACCESS_KEY_ID" or k == "ACDL_AWS_ACCESS_KEY_ID":
                         env["AWS_ACCESS_KEY_ID"] = v
-                    elif k == "ACDL_AWS_SECRET_ACCESS_KEY":
+                    elif k == "NOVA_AWS_SECRET_ACCESS_KEY" or k == "ACDL_AWS_SECRET_ACCESS_KEY":
                         env["AWS_SECRET_ACCESS_KEY"] = v
                     elif k == "AWS_DEFAULT_REGION":
                         env["AWS_DEFAULT_REGION"] = v
@@ -319,7 +332,8 @@ def _check_live_terraform_plan_microservice() -> Tuple[Status, str]:
     """CAP-013: terraform init+validate+plan against live AWS for the
     microservice stack (D-093 live-AWS tier of the headline E2E).
 
-    Requires AWS credentials (ACDL_AWS_ACCESS_KEY_ID etc. in .env.secrets).
+    Requires AWS credentials (NOVA_AWS_ACCESS_KEY_ID etc. in .env.secrets;
+    dual-read NOVA_* first, ACDL_* fallback per G-106).
     Runs in a temp dir; does NOT apply (plan only)."""
     import tempfile, os
     work = tempfile.mkdtemp(prefix="acdl_regr_live_")
@@ -421,7 +435,7 @@ def _check_s3_state_bucket() -> Tuple[Status, str]:
         s3 = boto3.client("s3", region_name=env.get("AWS_DEFAULT_REGION", "us-east-1"),
                           aws_access_key_id=env.get("AWS_ACCESS_KEY_ID"),
                           aws_secret_access_key=env.get("AWS_SECRET_ACCESS_KEY"))
-        account_id = os.environ.get("ACDL_AWS_ACCOUNT_ID", "581513795199")
+        account_id = _envhelper.get_env("AWS_ACCOUNT_ID", "581513795199")
         state_bucket = f"acdl-tfstate-{account_id}-us-east-1"
         s3.head_bucket(Bucket=state_bucket)
         r = s3.list_objects_v2(Bucket=state_bucket, MaxKeys=5)
@@ -643,8 +657,8 @@ def write_report(report: RegressionReport,
 
 
 def main() -> int:
-    milestone = os.environ.get("ACDL_REGRESSION_MILESTONE", "v1.10")
-    phase = int(os.environ.get("ACDL_REGRESSION_PHASE", "52"))
+    milestone = _envhelper.get_env("REGRESSION_MILESTONE", "v1.10") or "v1.10"
+    phase = int(_envhelper.get_env("REGRESSION_PHASE", "52") or "52")
     report = run_regression(milestone=milestone, phase=phase)
     md, js = write_report(report)
     print(f"regression: {report.summary} -> {md}")