fix: distinguish generated artifacts from AI disclosure

src/core/evaluator.mjs

@@ -21,6 +21,8 @@ const GENERIC_TITLES = new Set([
   "quick fix"
 ]);
 
+const TOOL_GENERATION_DISCLOSURE = /\b(chatgpt|claude|copilot|llm|coding assistant|ai-generated|ai generated|generated by ai|generated by a tool|tool-generated|tool-suggested|coccinelle generated|checkpatch\.pl --fix)\b/i;
+
 const SIGNALS = {
   issueLink: /\b(fix(?:e[sd])?|close[sd]?|resolve[sd]?)\s+#\d+\b|github\.com\/[^/\s]+\/[^/\s]+\/issues\/\d+/i,
   testMention: /\b(npm test|node --test|pytest|cargo test|go test|unit tests?|integration tests?|manual(?:ly)? test(?:ed)?|verified|verification)\b/i,
@@ -31,7 +33,7 @@ const SIGNALS = {
   version: /\b(version|commit|sha|main|release|v?\d{4}\.\d+(?:\.\d+)?|v\d+\.\d+|node\s+\d+|python\s+\d+|os:|environment)\b/i,
   logs: /```|stack trace|traceback|journal|log output|error output|exception|panic/i,
   rootCause: /\b(root cause|cause[ds]?|because|bisect|regression|culprit|patch|proposed fix|able to fix|workaround|analysis)\b/i,
-  aiDisclosure: /\b(ai|llm|chatgpt|copilot|claude|gemini|generated)\b/i,
+  aiDisclosure: TOOL_GENERATION_DISCLOSURE,
   aiReportClaim: /\b(?:asked\s+(?:an?\s+)?ai|ai\s+(?:said|says|found|reported|detected|suggested)|(?:chatgpt|copilot|claude|gemini|ai tool|llm)\s+(?:said|says|found|reported|detected|suggested|generated|wrote|claims?))\b/i,
   humanAccountability: /\b(tested|verified|reviewed|reproduced|i understand|manual|locally)\b/i,
   dependencyJustification: /\b(dependenc(?:y|ies)|package|lockfile|upgrade|security update|npm install|npm audit|vulnerability)\b/i,
@@ -1520,7 +1522,7 @@ function hasHumanSignedOff(text) {
 }
 
 function hasMeaningfulToolGeneration(text) {
-  return /\b(chatgpt|claude|copilot|llm|coding assistant|ai-generated|ai generated|generated by ai|generated by a tool|tool-generated|tool-suggested|coccinelle generated|checkpatch\.pl --fix)\b/i.test(text);
+  return TOOL_GENERATION_DISCLOSURE.test(text);
 }
 
 function analyzeProvenance(input) {

test/evaluator.test.mjs

@@ -31,6 +31,55 @@ test("ready pull request passes as reviewable", async () => {
   assert.doesNotMatch(result.comment, /- undefined:/);
 });
 
+test("generated artifact wording is not treated as AI disclosure", () => {
+  const result = evaluateContribution({
+    kind: "pull_request",
+    title: "docs: update checked-in reference README",
+    body: [
+      "Closes #42.",
+      "",
+      "The generated README is checked in because repository policy requires the reference output to remain synchronized with its source."
+    ].join("\n"),
+    authorAssociation: "MEMBER",
+    draft: false,
+    changedFiles: 1,
+    additions: 4,
+    deletions: 2,
+    files: [
+      { filename: "docs/reference/README.md", additions: 4, deletions: 2 }
+    ],
+    checks: [
+      { name: "readme-consistency", conclusion: "success" }
+    ]
+  });
+
+  assert.ok(result.checks.some((check) => check.id === "accountability" && check.status === "pass"));
+  assert.equal(result.provenance.toolGenerated, false);
+});
+
+test("explicit tool generation without human verification still fails accountability", () => {
+  const result = evaluateContribution({
+    kind: "pull_request",
+    title: "fix: handle empty parser input",
+    body: "Closes #42.\n\nChatGPT generated this patch. It should work.",
+    authorAssociation: "CONTRIBUTOR",
+    draft: false,
+    changedFiles: 2,
+    additions: 12,
+    deletions: 3,
+    files: [
+      { filename: "src/parser.mjs", additions: 8, deletions: 3 },
+      { filename: "test/parser.test.mjs", additions: 4, deletions: 0 }
+    ],
+    checks: [
+      { name: "test", conclusion: "success" }
+    ]
+  });
+
+  assert.ok(result.labels.includes("needs-human-verification"));
+  assert.ok(result.checks.some((check) => check.id === "accountability" && check.status === "fail"));
+});
+
 test("unready issue requires reproducer and real evidence", async () => {
   const result = evaluateContribution(await fixture("issue-unready"));
   assert.equal(result.kind, "issue");