## Problem
In production, searching for a bank like **Wise** in the *Connect Bank
Account* picker showed it many times, and **the count grew every time
the search box changed** (4 → 6 → …). Only one entry — the real native
integration — should appear.
## Root cause
Two bugs stacked on top of each other:
1. **Non-unique React key.** The list rendered each institution with
`key={institution.name}`. Wise is offered both natively (our own
API-token integration) and by the Enable Banking aggregator, so two rows
shared the key `"Wise"`. On every re-render of the filtered list, React
couldn't reconcile the duplicate keys and **leaked orphaned DOM nodes**
instead of replacing them — so the entry multiplied with each keystroke
(and rendered out of alphabetical order). React even warned: *"two
children with the same key, Wise … may cause children to be
duplicated"*.
2. **No dedup against native integrations.** Even without the growth,
Wise showed twice (aggregator + native). It should only surface through
our own integration.
The bank list is built from the Enable Banking API merged with our
native providers — it does **not** read from the `banks` table, which
was a red herring (only 2 non-duplicated Wise rows there).
## Changes
- Unique key (`name-country-index`) in both the dialog and inline
pickers.
- Drop aggregator institutions we already integrate natively, so Wise
only surfaces through its own integration (general — also covers
Binance, Coinbase, etc.).
- Point the native Wise logo at the official brand mark; remove the
now-unused local asset.
## Tests
Added regression tests covering dedup and repeated filtering. Reproduced
the bug first (counts grew `[3,4,5,6,7]`), then confirmed the fix holds
it at `1`. Full JS suite green (242 tests).
ed5aac0c4a