feat(web): suggest all branches in Bought-a-box + Return-to-bank pickers (om-35r3)

The Do-tab bank datalists were built only from names already on a transaction, so
a branch with no txns yet wouldn't suggest. Fold in the full branch list (ADR-010)
at these two entry points — where typo forks originate — so entry reuses an
existing branch instead of minting a new one.

Author: tompscanlan

web/app/src/lib/components/workflows/BoughtABox.svelte

@@ -50,8 +50,14 @@
 
   onMount(async () => {
     try {
-      const [rolls, trips] = await Promise.all([api.rollTxns.list(), api.trips.list()])
-      banks = distinct([...rolls.map((r: RollTxn) => r.bank), ...trips.map((t: Trip) => t.bank)])
+      const [rolls, trips, branches] = await Promise.all([api.rollTxns.list(), api.trips.list(), api.branches.list()])
+      // Suggest every known branch (ADR-010) — not just names already on a txn —
+      // so entry reuses an existing branch instead of forking a new one on a typo.
+      banks = distinct([
+        ...branches.map((b) => b.name),
+        ...rolls.map((r: RollTxn) => r.bank),
+        ...trips.map((t: Trip) => t.bank),
+      ])
     } catch {
       /* suggestions optional */
     }

web/app/src/lib/components/workflows/ReturnToBank.svelte

@@ -41,8 +41,9 @@
   onMount(async () => {
     amount = outstanding // pre-fill with everything still owed back
     try {
-      const [rolls, trips] = await Promise.all([api.rollTxns.list(), api.trips.list()])
+      const [rolls, trips, branches] = await Promise.all([api.rollTxns.list(), api.trips.list(), api.branches.list()])
       banks = distinct([
+        ...branches.map((b) => b.name), // every known branch (ADR-010), reuse over fork
         ...rolls.map((r: RollTxn) => r.bank),
         ...trips.map((t: Trip) => t.bank),
       ])