Function walk

src/tools/file_tree.js:93–149

(dir, depth)

  const entries = [];

  function walk(dir, depth) {
    if (depth > maxDepth || entries.length >= maxCollect) return;
    let listing;
    try { listing = fs.readdirSync(dir, { withFileTypes: true }); }
    catch { return; }

    for (const ent of listing) {
      if (entries.length >= maxCollect) break;
      const name = ent.name;

      if (ent.isDirectory()) {
        if (SKIP_DIRS.has(name)) continue;
        // Skip most dot-dirs but allow .marrow (MarrowScript source)
        if (name.startsWith('.') && name !== '.marrow') continue;
        walk(path.join(dir, name), depth + 1);
      } else if (ent.isFile()) {
        const full = path.join(dir, name);
        const rel = path.relative(rootDir, full);
        const ext = path.extname(name).toLowerCase();
        const base = name.toLowerCase();

        let score = 0;

        // Extension scoring
        if (SOURCE_EXTS.has(ext)) score += 2;

        // Config files
        if (CONFIG_FILES.has(name)) score += 1;

        // Test files
        if (/^test_|\.test\.|\.spec\.|_test\./i.test(name)) score += 1;

        // Generated output penalty
        if (GENERATED_PATTERNS.some(p => p.test(name))) score -= 2;

        // Recent modification bonus
        let mtime = 0;
        try {
          const stat = fs.statSync(full);
          mtime = stat.mtimeMs;
          const ageMs = now - mtime;
          if (ageMs < 86400000) score += 3;       // < 24h
          else if (ageMs < 604800000) score += 2;  // < 7d
          else if (ageMs < 2592000000) score += 1; // < 30d
        } catch {}

        // Task keyword bonus
        if (taskTokens.length > 0) {
          const relLower = rel.toLowerCase();
          const hits = taskTokens.filter(t => relLower.includes(t)).length;
          score += Math.min(hits * 2, 4); // cap at +4
        }

        entries.push({ rel, full, name, ext, score, mtime });
      }
    }
  }