show live email count during gmail sync instead of mbsync log lines

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/servers/queue/handlers/gmail-sync.ts

@@ -246,8 +246,23 @@ const gmailSyncHandler: JobHandler = {
             throw new PermanentError(`Failed to start mbsync: ${msg}`);
           }
 
-          // Stream stderr for live progress
-          let lastLine = '';
+          // Periodically count downloaded emails and update progress
+          let emailCount = 0;
+          let counting = true;
+          const countLoop = (async () => {
+            while (counting) {
+              await new Promise((r) => setTimeout(r, 3000));
+              if (!counting) break;
+              emailCount = await countMaildirFiles(maildirPath);
+              ctx.updateProgress({
+                current: emailCount,
+                total: 0,
+                label: `Downloading — ${emailCount.toLocaleString()} emails`,
+              });
+            }
+          })();
+
+          // Stream stderr for logging
           let stderrBuf = '';
           const reader = (proc.stderr as ReadableStream<Uint8Array>).getReader();
           const decoder = new TextDecoder();
@@ -260,18 +275,15 @@ const gmailSyncHandler: JobHandler = {
               const lines = chunk.split('\n');
               for (const line of lines) {
                 const trimmed = line.trim();
-                if (!trimmed) continue;
-                lastLine = trimmed;
-                console.log(`[gmail-sync] mbsync: ${trimmed}`);
-              }
-              if (lastLine) {
-                ctx.updateProgress({ current: 0, total: 0, label: `mbsync: ${lastLine.slice(0, 80)}` });
+                if (trimmed) console.log(`[gmail-sync] mbsync: ${trimmed}`);
               }
             }
           })();
 
           const exitCode = await proc.exited;
+          counting = false;
           await readLoop;
+          await countLoop;
 
           if (exitCode !== 0) {
             const isOverquota = stderrBuf.includes('OVERQUOTA');
@@ -296,7 +308,13 @@ const gmailSyncHandler: JobHandler = {
               throw new Error(`mbsync exited with code ${exitCode}: ${stderrBuf.slice(-500)}`);
             }
           } else {
-            console.log('[gmail-sync] mbsync completed successfully');
+            emailCount = await countMaildirFiles(maildirPath);
+            console.log(`[gmail-sync] mbsync completed successfully — ${emailCount} emails`);
+            await ctx.updateProgress({
+              current: emailCount,
+              total: emailCount,
+              label: `Download complete — ${emailCount.toLocaleString()} emails`,
+            });
           }
         } finally {
           // Always clean up config (contains password)