Show embedding notice only once at end of qmd update

Previously, the "Run 'qmd embed' to update embeddings" message was
printed after each collection was indexed, repeating the same global
count multiple times. Now it's shown once at the end of the update.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/qmd.ts

@@ -422,11 +422,19 @@ async function updateCollections(): Promise<void> {
       }
     }
 
-    await indexFiles(col.pwd, col.glob_pattern, col.name);
+    await indexFiles(col.pwd, col.glob_pattern, col.name, true);
     console.log("");
   }
 
+  // Check if any documents need embedding (show once at end)
+  const finalDb = getDb();
+  const needsEmbedding = getHashesNeedingEmbedding(finalDb);
+  closeDb();
+
   console.log(`${c.green}✓ All collections updated.${c.reset}`);
+  if (needsEmbedding > 0) {
+    console.log(`\nRun 'qmd embed' to update embeddings (${needsEmbedding} unique hashes need vectors)`);
+  }
 }
 
 /**
@@ -1329,7 +1337,7 @@ function collectionRename(oldName: string, newName: string): void {
   console.log(`  Virtual paths updated: ${c.cyan}qmd://${oldName}/${c.reset} → ${c.cyan}qmd://${newName}/${c.reset}`);
 }
 
-async function indexFiles(pwd?: string, globPattern: string = DEFAULT_GLOB, collectionName?: string): Promise<void> {
+async function indexFiles(pwd?: string, globPattern: string = DEFAULT_GLOB, collectionName?: string, suppressEmbedNotice: boolean = false): Promise<void> {
   const db = getDb();
   const resolvedPwd = pwd || getPwd();
   const now = new Date().toISOString();
@@ -1450,7 +1458,7 @@ async function indexFiles(pwd?: string, globPattern: string = DEFAULT_GLOB, coll
     console.log(`Cleaned up ${orphanedContent} orphaned content hash(es)`);
   }
 
-  if (needsEmbedding > 0) {
+  if (needsEmbedding > 0 && !suppressEmbedNotice) {
     console.log(`\nRun 'qmd embed' to update embeddings (${needsEmbedding} unique hashes need vectors)`);
   }