Add bridge lane health API and config-ready lane UI for Tier A Week 3.

Probe LINK balances on CCIP bridge contracts, expose proof-transfer metadata on bridge status, and render funded/unfunded lane health on /bridge with extended smoke coverage.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/services/api/missionControl.ts

@@ -95,6 +95,32 @@ export interface MissionControlSubsystemStatus {
   completeness?: string | null
 }
 
+export interface MissionControlBridgeLaneContract {
+  bridge?: string
+  link_balance_wei?: string
+  status?: string
+  error?: string
+}
+
+export interface MissionControlBridgeLane {
+  key: string
+  chain_name?: string
+  chain_id?: number
+  config_ready?: boolean
+  link_token?: string
+  status?: string
+  proof_status?: string
+  weth9?: MissionControlBridgeLaneContract
+  weth10?: MissionControlBridgeLaneContract
+  rpc_endpoint?: string
+}
+
+export interface MissionControlBridgeLaneHealth {
+  updated_at?: string
+  min_link_wei?: string
+  lanes?: MissionControlBridgeLane[]
+}
+
 export interface MissionControlBridgeStatusResponse {
   data?: {
     status?: string
@@ -112,6 +138,8 @@ export interface MissionControlBridgeStatusResponse {
     chains?: Record<string, MissionControlChainStatus>
     ccip_relay?: MissionControlRelayPayload
     ccip_relays?: Record<string, MissionControlRelayPayload>
+    bridge_lanes?: MissionControlBridgeLaneHealth
+    proof_transfers?: Record<string, unknown>
   }
 }