diff --git a/get-shit-done/bin/lib/roadmap.cjs b/get-shit-done/bin/lib/roadmap.cjs
index f6b3d1c28..638f24897 100644
--- a/get-shit-done/bin/lib/roadmap.cjs
+++ b/get-shit-done/bin/lib/roadmap.cjs
@@ -129,6 +129,15 @@ function cmdRoadmapAnalyze(cwd, raw) {
   const phases = [];
   let match;
 
+  // Build phase directory lookup once (O(1) readdir instead of O(N) per phase)
+  const _phaseDirNames = (() => {
+    try {
+      return fs.readdirSync(phasesDir, { withFileTypes: true })
+        .filter(e => e.isDirectory())
+        .map(e => e.name);
+    } catch { return []; }
+  })();
+
   while ((match = phasePattern.exec(content)) !== null) {
     const phaseNum = match[1];
     const phaseName = match[2].replace(/\(INSERTED\)/i, '').trim();
@@ -155,9 +164,7 @@ function cmdRoadmapAnalyze(cwd, raw) {
     let hasResearch = false;
 
     try {
-      const entries = fs.readdirSync(phasesDir, { withFileTypes: true });
-      const dirs = entries.filter(e => e.isDirectory()).map(e => e.name);
-      const dirMatch = dirs.find(d => phaseTokenMatches(d, normalized));
+      const dirMatch = _phaseDirNames.find(d => phaseTokenMatches(d, normalized));
 
       if (dirMatch) {
         const phaseFiles = fs.readdirSync(path.join(phasesDir, dirMatch));