feat(app): show attempt count column on the Skipped Packages tab

attemptCount goes through SkippedPackageItem and SkippedRow into a new
column on the data table. Badge color cues:
  - outline (1)        first failure, will auto-retry next cycle
  - secondary (2-4)    has retried but still below cap
  - destructive (>=5)  hit the cap; will not auto-retry until reset

The "Skipped" column is renamed to "Last Skipped" since the timestamp
now reflects the most recent attempt, not the first.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/lib/telegram/queries.ts

@@ -589,6 +589,7 @@ export async function listSkippedPackages(options: {
     sourceMessageId: s.sourceMessageId.toString(),
     isMultipart: s.isMultipart,
     partCount: s.partCount,
+    attemptCount: s.attemptCount,
     createdAt: s.createdAt.toISOString(),
   }));