feat(P02): nova apply --local --sign-local-review (REQ-330, REQ-332, backend-engineer)

---ci---
project: acdl
phase: 2
milestone: v1.28
status: execute
persona: backend-engineer
---
nova apply subcommand (44 lines, CAP-034: <=50 lines, <=3 functions, no if
except __main__ guard). --local calls core.env.synthesize_local_env() +
core.contract_resolver.resolve(). --sign-local-review calls
core.jws_attestation.sign_attestation() (REQ-332) and appends the JWS to the
output. Delegates to core/ — no business logic in the subcommand (NFR-7).
Auto-registered via nova/cli.py pkgutil discovery; CAP-033/034 tests pass.

nova/apply.py

@@ -0,0 +1,45 @@
+"""nova apply — resolve a contract + synthesize local env (REQ-330, REQ-332).
+
+Subcommand (≤50 lines, ≤3 functions, delegates to core/ — NFR-7).
+  nova apply --local --contract .nova/contract.yml [--sign-local-review]
+  nova apply --contract contracts/microservice.yml --out stack.json
+
+--local: calls core.env.synthesize_local_env() + core.contract_resolver.resolve()
+--sign-local-review: calls core.jws_attestation.sign_attestation() (REQ-332)
+"""
+
+from __future__ import annotations
+
+import json
+
+from core import env
+from core.contract_resolver import resolve
+from core.jws_attestation import sign_attestation
+
+
+def add_parser(subparsers):
+    p = subparsers.add_parser("apply", help="resolve a contract (+ local env synth)")
+    p.add_argument("--contract", default=".nova/contract.yml", help="contract YAML path")
+    p.add_argument("--out", default=None, help="output path (default: stdout)")
+    p.add_argument("--local", action="store_true", help="synthesize a local env (no AWS)")
+    p.add_argument("--environment", default=None, help="environment override")
+    p.add_argument("--sign-local-review", action="store_true", help="sign a local-review attestation (REQ-332)")
+    p.add_argument("--pat", default=None, help="PAT for --sign-local-review")
+    p.set_defaults(_run=run)
+
+
+def run(args) -> int:
+    synth = env.synthesize_local_env(args.contract, environment=args.environment) if args.local else None
+    env_override = (synth["name"] if isinstance(synth, dict) else None) or args.environment
+    result = resolve(args.contract, environment_override=env_override)
+    blob = json.dumps(result, indent=2) + "\n"
+    pat = args.pat or env.get_env("PAT", "") or ""
+    attestation = sign_attestation({"contract": args.contract, "review": "local"}, pat) if (args.sign_local_review and pat) else None
+    blob = blob + (attestation + "\n" if attestation else "")
+    print(blob) if args.out is None else open(args.out, "w").write(blob)
+    return 0
+
+
+if __name__ == "__main__":
+    import sys
+    print("use: nova apply --contract <contract.yml> [--local] [--sign-local-review]", file=sys.stderr)