feat: explicit wallet connect button with no autoconnect lifecycle (#228)

* fix: private note fallback flow when wallet connection is denied

- Gate wallet import on connectWallet() return value to avoid stale
  address causing a 60s hang before falling through to transport layer
- Wire up download handler in showOptionalDownload so the button is
  functional when transport succeeds but note doesn't arrive
- Fix missing .style on nextStepsList.display in showNextSteps

* feat: replace wallet icon with explicit Connect Wallet button

* feat: add wallet button styles and fix modal border rendering

* feat: wallet connect/disconnect lifecycle, remove auto-connect from mint flow

* feat: add wallet button state management methods to UIController

* chore: bump version to 0.13.1

* feat: square wallet icon button, remove disconnect option

Author: WiktorStarczewski

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## 0.13.1 (TBD)
+
+- Replaced hidden wallet icon with explicit "Connect Wallet" / "Disconnect" button next to recipient address input ([#228](https://github.com/0xMiden/miden-faucet/pull/228)).
+- Removed automatic wallet connection popup during private note minting ([#228](https://github.com/0xMiden/miden-faucet/pull/228)).
+- Fixed modal content border rendering inconsistency caused by subpixel border ([#228](https://github.com/0xMiden/miden-faucet/pull/228)).
+
 ## 0.13.0 (2026-01-28)
 
 - Added web-client to wait for note commitment on the node ([#174](https://github.com/0xMiden/miden-faucet/pull/174)).