Fix: refuse inert exact ignore-value entries (#662)

ignore-value stored exact values for rules that cannot extract one, so the entries never matched. Refuse them and point at "*" --file.

AI assistance: implemented with Cursor Grok 4.6.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/cli-ignores.test.js

@@ -115,6 +115,13 @@ describe('impeccable ignores CLI', () => {
     expect(existsSync(join(root, '.impeccable', 'config.json'))).toBe(false);
   });
 
+  test('rejects exact values for rules that cannot extract one', () => {
+    const result = run(['add-value', 'side-tab', 'Inter']);
+    expect(result.status).not.toBe(0);
+    expect(result.stderr).toMatch(/side-tab has no extractable ignore value.*add-value side-tab "\*" --file <glob>/);
+    expect(existsSync(join(root, '.impeccable', 'config.json'))).toBe(false);
+  });
+
   test('removes an existing broad wildcard value ignore', () => {
     mkdirSync(join(root, '.impeccable'), { recursive: true });
     writeFileSync(join(root, '.impeccable', 'config.json'), JSON.stringify({

tests/hook.test.mjs

@@ -819,6 +819,28 @@ describe('hook-admin.mjs', () => {
     assert.equal(fs.existsSync(getConfigPath(cwd)), false, 'a refused ignore must not write config');
   });
 
+  it('ignore-value refuses exact values for rules that cannot extract one', () => {
+    assert.throws(
+      () => runAdmin(['ignore-value', 'cramped-padding', 'padding: 4px 8px']),
+      /cramped-padding has no extractable ignore value.*ignore-value cramped-padding "\*" --file <glob>/,
+    );
+    assert.throws(
+      () => runAdmin(['ignore-value', 'side-tab', 'Inter', '--file', 'a.css']),
+      /side-tab has no extractable ignore value.*ignore-value side-tab "\*" --file <glob>/,
+    );
+    assert.equal(fs.existsSync(getConfigPath(cwd)), false, 'a refused ignore must not write config');
+
+    const out = runAdmin(['ignore-value', 'overused-font', 'Inter']);
+    assert.match(out, /Added overused-font=inter/);
+
+    runAdmin(['ignore-value', 'cramped-padding', '*', '--file', 'index.html']);
+    const shared = JSON.parse(fs.readFileSync(getConfigPath(cwd), 'utf-8')).detector;
+    assert.equal(shared.ignoreValues.filter((e) => e.rule === 'cramped-padding').length, 1);
+    const entry = shared.ignoreValues.find((e) => e.rule === 'cramped-padding');
+    assert.equal(entry.value, '*');
+    assert.deepEqual(entry.files, ['index.html']);
+  });
+
   it('ignore-value --file requires a glob', () => {
     assert.throws(
       () => runAdmin(['ignore-value', 'side-tab', '*', '--file']),