fix(token-aggregation): resolve TypeScript build errors

- token-mapping: use createRequire(proxmox package.json) and process.cwd(), drop import.meta to allow commonjs build
- Add routes/bridge.ts stub (status + metrics) so server.ts import resolves
- Add config/cross-chain-bridges.ts with BridgeConfig/BridgeLane and CHAIN_138_BRIDGES from env
- cross-chain-indexer: import BridgeLane, add explicit types for .find/.map callbacks, bridgeType fallback to b.type

Made-with: Cursor

services/token-aggregation/src/api/routes/bridge.ts

@@ -0,0 +1,26 @@
+/**
+ * Bridge API: cross-chain bridge status and metrics.
+ * GET /api/v1/bridge/status, /api/v1/bridge/metrics — stubbed or delegated to cross-chain report.
+ */
+
+import { Router, Request, Response } from 'express';
+
+const router: Router = Router();
+
+router.get('/status', (_req: Request, res: Response) => {
+  res.json({
+    ok: true,
+    bridges: [],
+    message: 'Bridge status: use /api/v1/report/cross-chain for volume/lanes.',
+  });
+});
+
+router.get('/metrics', (_req: Request, res: Response) => {
+  res.json({
+    ok: true,
+    lanes: [],
+    message: 'Bridge metrics: use /api/v1/report/cross-chain for aggregated data.',
+  });
+});
+
+export default router;