[dataCenter430]

Adds a pre-final correctness gate (undefined-name / missing-import detection for Python + React hooks) and an integration gate flagging orphaned new files, plus v20 prompt/ranking refinements.

agent.py only — +364/-15.
Scope guard, pyflakes smoke, stdlib-only imports verified locally.

[github-actions]

OpenRouter PR Judge

Verdict: PASS
Model: anthropic/claude-opus-4.7
Threshold: 70

Score	Value
Overall	78
Real edit	80
Safety	95
Scope	90
Contract	95

Summary

This PR adds two new mechanical refinement gates to the solve loop: a Python AST-based undefined-name check and a React-hook missing-import check, plus an orphaned-new-file integration advisory. It also adds a 'soft nudge' mid-loop prompt fired earlier and more gently than the existing hail-mary, tweaks the mid-loop fraction from 0.55 to 0.50, expands the stopword/generic-hook lists for identifier extraction, adds a type-aware cue to the self-check prompt, and widens the recently-observed-paths window. The solve() signature, return shape, and validator boundaries are preserved.

Static Checks

• No static findings.

Judge Reasons

• Adds concrete new mechanisms (_check_correctness, _check_undefined_names_py, _check_react_hook_imports, _check_orphaned_new_files) wired into the refinement gate chain with a new MAX_CORRECTNESS_FIX_TURNS counter.
• Soft-nudge path is a new mid-loop behavior with its own gating constants, not just prompt wording.
• Prompt changes (type-aware cue, integration advisories, correctness-fix prompt) are paired with real mechanism changes that produce the inputs to those prompts.
• No new third-party imports; uses stdlib ast/re/subprocess; no new env vars; no sampling params; no forbidden hosts.
• solve() signature and return dict shape unchanged; DANGEROUS_PATTERNS not weakened; api_base/api_key routing preserved.
• Existing # MINER-EDITABLE / # VALIDATOR CONTRACT markers and structure remain readable; identifiers are descriptive.

Risks

• goodhart (minor): the new self-check 'type-aware cue' and prompt text could be read as judge-flattering language, but it's paired with real gate logic, not prose-only.

Required Changes

• No required changes returned.