detail: optional bucket-switch on open from search / link

New toggle under Settings → Behavior → Interactions: "Switch to
card's bucket on open (search / link)". When enabled, openDetail
calls activateBucket(card.bucket_id) so the board and bucket bar
update to show the card's context. Skipped when already on 'all'
or the correct bucket. Default off.

Uses activateBucket() (from buckets.js) instead of raw state
assignment so the bucket-bar highlight tracks the switch.

Tests: two cases — setting on switches activeBucket + verifies the
bucket-tab.active in the bar matches; setting off leaves the
bucket unchanged. Both create/delete probe cards in try/finally
and restore the setting + activeBucket in afterEach.

Bumps to 1.9.27.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

config.php

@@ -1,7 +1,7 @@
 <?php
 
 define('APP_NAME', 'hyprcrd');
-define('APP_VERSION', '1.9.26');
+define('APP_VERSION', '1.9.27');
 
 // Database path — writable directory, outside webroot
 // DB_PATH / UPLOAD_DIR can be pre-defined by the Electron router for app isolation