feat: add Ford VP44 unlock progress dialog, K-Line fast unlock, localization, safety dialogs, and settings

Unlock progress UI:
- UnlockProgressDialog with dark-themed progress ring, phase indicator, elapsed
  time, and cancel/close buttons (non-modal, draggable borderless window)
- UnlockProgressViewModel with event-driven progress tracking via IUnlockService
- Triggers on pump selection (manual or K-Line auto-detect), not test start

UnlockService rewrite:
- Persistent CAN senders that outlive the unlock sequence (StopSenders on pump change)
- Concurrent K-Line fast unlock: awaits session Connected, sends RAM timer shortcut
  ({02 88 02 03 A8 01 00}), verifies via CAN TestUnlock before skipping wait
- Fix Type 1 verification (Value == 0 means unlocked, was inverted)

K-Line fast unlock support:
- IKwpService.TryFastUnlockAsync / KwpService implementation

Additional features:
- ILocalizationService with ES/EN resource dictionaries and runtime switching
- Safety dialogs: VoltageWarning, OilPumpConfirm, RpmSafetyWarning
- SettingsDialog for app configuration
- BenchService enhancements, ConfigurationService improvements, PDF report updates
- All UI strings localized via DynamicResource

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

Models/BenchConfiguration.cs

@@ -136,10 +136,11 @@ namespace HC_APTBS.Models
         public string ReportLogoPath { get; set; } = string.Empty;
 
         /// <summary>
-        /// Comma-separated <c>user:password</c> credential pairs for operator authentication
-        /// before report generation.
+        /// Comma-separated <c>user:salt:hash</c> credential entries for operator authentication
+        /// before report generation.  Salt is 16-byte Base64, hash is PBKDF2-HMAC-SHA256 (600 000 iterations, 32-byte output) Base64.
+        /// Legacy <c>user:password</c> entries are auto-migrated on first load.
         /// </summary>
-        public string Users { get; set; } = "admin:admin";
+        public string Users { get; set; } = string.Empty;
 
         // ── K-Line port ───────────────────────────────────────────────────────