Add repository consistency checker

Author: CodeSigils

scripts/check-consistency.js

@@ -0,0 +1,56 @@
+#!/usr/bin/env node
+
+/**
+ * Repository consistency checker.
+ *
+ * Verifies:
+ * - markdownlint config exists
+ * - AGENTS.md references canonical MD060 style
+ * - SKILL.md references canonical MD060 style
+ * - README.md references canonical MD060 style
+ */
+
+const fs = require('fs');
+const path = require('path');
+
+const ROOT = path.join(__dirname, '..');
+const CONFIG = path.join(ROOT, 'skills', 'markdown-lint', 'references', '.markdownlint.json');
+const AGENTS = path.join(ROOT, 'AGENTS.md');
+const README = path.join(ROOT, 'README.md');
+const SKILL = path.join(ROOT, 'skills', 'markdown-lint', 'SKILL.md');
+
+function fail(message) {
+    console.error(`CONSISTENCY ERROR: ${message}`);
+    process.exit(1);
+}
+
+function read(file) {
+    if (!fs.existsSync(file)) {
+        fail(`Missing file: ${file}`);
+    }
+    return fs.readFileSync(file, 'utf8');
+}
+
+const config = JSON.parse(read(CONFIG));
+const md060 = config.MD060?.style;
+
+if (md060 !== 'aligned') {
+    fail(`Expected MD060 style 'aligned', found '${md060}'`);
+}
+
+const checks = [
+    [AGENTS, 'MD060', '`aligned`'],
+    [README, 'aligned separators'],
+    [SKILL, 'table-column-style', '`aligned`'],
+];
+
+for (const [file, ...needles] of checks) {
+    const content = read(file);
+    for (const needle of needles) {
+        if (!content.includes(needle)) {
+            fail(`${path.basename(file)} missing expected text: ${needle}`);
+        }
+    }
+}
+
+console.log('Repository consistency checks passed.');