feat(federation): add schema columns for upload size mismatch tracking

Adds federation_status and federation_meta to attachments table, and
remote_max_upload_size to federation_peers, with idempotent migrations.

packages/server/src/db/migrate.ts

@@ -616,6 +616,19 @@ export function runMigrations(db: Database.Database): void {
 
   migrateGeneralizeOutbox(db);
 
+  // ─── Federation upload size mismatch columns ─────────────────────────────
+  try {
+    db.exec(`ALTER TABLE attachments ADD COLUMN federation_status TEXT`);
+  } catch { /* column already exists */ }
+
+  try {
+    db.exec(`ALTER TABLE attachments ADD COLUMN federation_meta TEXT`);
+  } catch { /* column already exists */ }
+
+  try {
+    db.exec(`ALTER TABLE federation_peers ADD COLUMN remote_max_upload_size INTEGER`);
+  } catch { /* column already exists */ }
+
   console.log('Migrations complete.');
 }
 

packages/server/src/db/schema.ts

@@ -94,6 +94,8 @@ export const attachments = sqliteTable('attachments', {
   height: integer('height'),
   duration: real('duration'),
   sourceUrl: text('source_url'),
+  federationStatus: text('federation_status'),
+  federationMeta: text('federation_meta'),
   createdAt: integer('created_at').notNull(),
 });
 
@@ -315,6 +317,7 @@ export const federationPeers = sqliteTable('federation_peers', {
   lastFailureAt: integer('last_failure_at'),
   consecutiveFailures: integer('consecutive_failures').default(0),
   lastSyncedAt: integer('last_synced_at').default(0),
+  remoteMaxUploadSize: integer('remote_max_upload_size'),
   createdAt: integer('created_at').notNull(),
 });