fix(test): create Alice twin in single-validator bridge setup

bridge_setup.js was verification-only and didn't create Alice's twin,
causing test5_deposit to fail with "Alice has no twin on TFChain".

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

Author: sameh-farouk

scripts/bridge_setup.js

@@ -9,9 +9,8 @@
  *   - Deposit fee: 10,000,000 base units (1 TFT)
  *   - Withdraw fee: 10,000,000 base units (1 TFT)
  *
- * No pallet calls are made — there is no sudo pallet on TFChain and all bridge
- * admin calls require root or council approval. The genesis configuration is
- * sufficient for single-validator local development.
+ * The dev chain genesis is sufficient for bridge configuration (no sudo needed).
+ * This script additionally creates Alice's twin (needed for deposit tests).
  *
  * Usage:
  *   node scripts/bridge_setup.js
@@ -27,13 +26,38 @@ function log (msg) { console.log(`[setup] ${msg}`) }
 function warn (msg) { console.warn(`[setup] WARN: ${msg}`) }
 function die (msg) { console.error(`[setup] ERROR: ${msg}`); process.exit(1) }
 
+/** Sign a tx, wait for InBlock, and throw on dispatch error */
+function signAndWait (api, tx, signer) {
+  return new Promise((resolve, reject) => {
+    let unsub
+    tx.signAndSend(signer, ({ status, dispatchError, events }) => {
+      if (!status.isInBlock && !status.isFinalized) return
+      if (dispatchError) {
+        let msg = dispatchError.toString()
+        if (dispatchError.isModule) {
+          try {
+            const decoded = api.registry.findMetaError(dispatchError.asModule)
+            msg = `${decoded.section}.${decoded.name}: ${decoded.docs}`
+          } catch {}
+        }
+        if (unsub) unsub()
+        reject(new Error(msg))
+        return
+      }
+      if (unsub) unsub()
+      resolve({ status, events })
+    }).then(u => { unsub = u }).catch(reject)
+  })
+}
+
 async function main () {
   log(`Connecting to TFChain at ${TFCHAIN_URL}...`)
   const api = await ApiPromise.create({ provider: new WsProvider(TFCHAIN_URL) })
 
   try {
     const keyring = new Keyring({ type: 'sr25519' })
 
+    const alice = keyring.addFromUri('//Alice')
     const bob = keyring.addFromUri('//Bob')
     const charlie = keyring.addFromUri('//Charlie')
     const ferdie = keyring.addFromUri('//Ferdie')
@@ -73,6 +97,20 @@ async function main () {
       warn('Deposit fee is 0 — bridge may not charge fees')
     }
 
+    // Create Alice's twin (needed for test5_deposit)
+    // Alice must accept T&C before creating a twin
+    const aliceTwinOpt = await api.query.tfgridModule.twinIdByAccountID(alice.address)
+    const aliceTwinId = aliceTwinOpt.toJSON()
+    if (!aliceTwinId) {
+      log('Accepting T&C and creating Alice twin for deposit tests...')
+      await signAndWait(api, api.tx.tfgridModule.userAcceptTc('https://localhost/tc', 'deadbeef'), alice)
+      await signAndWait(api, api.tx.tfgridModule.createTwin(null, null), alice)
+      const newTwin = await api.query.tfgridModule.twinIdByAccountID(alice.address)
+      log(`Alice twin created (ID: ${newTwin.toJSON()})`)
+    } else {
+      log(`Alice twin already exists (ID: ${aliceTwinId})`)
+    }
+
     log('Setup verification complete.')
   } finally {
     await api.disconnect()