Implement settings service and routes for file-based settings management

- Add SettingsService to handle reading/writing global and project settings.
- Introduce API routes for managing settings, including global settings, credentials, and project-specific settings.
- Implement migration functionality to transfer settings from localStorage to file-based storage.
- Create common utilities for settings routes and integrate logging for error handling.
- Update server entry point to include new settings routes.

apps/ui/src/styles/themes/nord.css

@@ -0,0 +1,144 @@
+/* Nord Theme */
+
+.nord {
+  --background: oklch(0.23 0.02 240); /* #2e3440 */
+  --background-50: oklch(0.23 0.02 240 / 0.5);
+  --background-80: oklch(0.23 0.02 240 / 0.8);
+
+  --foreground: oklch(0.9 0.01 230); /* #eceff4 */
+  --foreground-secondary: oklch(0.75 0.02 230); /* #d8dee9 */
+  --foreground-muted: oklch(0.6 0.03 230); /* #4c566a */
+
+  --card: oklch(0.27 0.02 240); /* #3b4252 */
+  --card-foreground: oklch(0.9 0.01 230);
+  --popover: oklch(0.25 0.02 240);
+  --popover-foreground: oklch(0.9 0.01 230);
+
+  --primary: oklch(0.7 0.12 220); /* #88c0d0 frost */
+  --primary-foreground: oklch(0.23 0.02 240);
+
+  --brand-400: oklch(0.75 0.12 220);
+  --brand-500: oklch(0.7 0.12 220); /* #88c0d0 */
+  --brand-600: oklch(0.65 0.14 220); /* #81a1c1 */
+
+  --secondary: oklch(0.31 0.02 240); /* #434c5e */
+  --secondary-foreground: oklch(0.9 0.01 230);
+
+  --muted: oklch(0.31 0.02 240);
+  --muted-foreground: oklch(0.55 0.03 230);
+
+  --accent: oklch(0.35 0.03 240); /* #4c566a */
+  --accent-foreground: oklch(0.9 0.01 230);
+
+  --destructive: oklch(0.65 0.2 15); /* #bf616a */
+
+  --border: oklch(0.35 0.03 240);
+  --border-glass: oklch(0.7 0.12 220 / 0.3);
+
+  --input: oklch(0.27 0.02 240);
+  --ring: oklch(0.7 0.12 220);
+
+  --chart-1: oklch(0.7 0.12 220); /* Frost blue */
+  --chart-2: oklch(0.65 0.14 220); /* #81a1c1 */
+  --chart-3: oklch(0.7 0.15 140); /* #a3be8c green */
+  --chart-4: oklch(0.7 0.2 320); /* #b48ead purple */
+  --chart-5: oklch(0.75 0.15 70); /* #ebcb8b yellow */
+
+  --sidebar: oklch(0.21 0.02 240);
+  --sidebar-foreground: oklch(0.9 0.01 230);
+  --sidebar-primary: oklch(0.7 0.12 220);
+  --sidebar-primary-foreground: oklch(0.23 0.02 240);
+  --sidebar-accent: oklch(0.31 0.02 240);
+  --sidebar-accent-foreground: oklch(0.9 0.01 230);
+  --sidebar-border: oklch(0.35 0.03 240);
+  --sidebar-ring: oklch(0.7 0.12 220);
+
+  /* Action button colors - Nord frost blue theme */
+  --action-view: oklch(0.7 0.12 220); /* Frost blue */
+  --action-view-hover: oklch(0.65 0.14 220);
+  --action-followup: oklch(0.65 0.14 220); /* Darker frost */
+  --action-followup-hover: oklch(0.6 0.16 220);
+  --action-commit: oklch(0.7 0.15 140); /* Green */
+  --action-commit-hover: oklch(0.65 0.17 140);
+  --action-verify: oklch(0.7 0.15 140); /* Green */
+  --action-verify-hover: oklch(0.65 0.17 140);
+
+  /* Running indicator - Frost blue */
+  --running-indicator: oklch(0.7 0.12 220);
+  --running-indicator-text: oklch(0.75 0.1 220);
+}
+
+/* ========================================
+   MONOKAI THEME
+   The classic Monokai color scheme
+   ======================================== */
+
+/* Theme-specific overrides */
+
+.nord .animated-outline-gradient {
+    background: conic-gradient(from 90deg at 50% 50%, #88c0d0 0%, #81a1c1 50%, #88c0d0 100%);
+}
+
+.nord .animated-outline-inner {
+    background: oklch(0.23 0.02 240) !important;
+    color: #88c0d0 !important;
+}
+
+.nord [data-slot="button"][class*="animated-outline"]:hover .animated-outline-inner {
+    background: oklch(0.28 0.03 240) !important;
+    color: #8fbcbb !important;
+}
+
+.nord .slider-track {
+    background: oklch(0.31 0.02 240);
+}
+
+.nord .slider-range {
+    background: linear-gradient(to right, #88c0d0, #81a1c1);
+}
+
+.nord .slider-thumb {
+    background: oklch(0.27 0.02 240);
+    border-color: #88c0d0;
+}
+
+.nord .xml-highlight {
+  color: oklch(0.9 0.01 230); /* #eceff4 */
+}
+
+.nord .xml-tag-bracket {
+  color: oklch(0.65 0.14 220); /* #81a1c1 */
+}
+
+.nord .xml-tag-name {
+  color: oklch(0.65 0.14 220); /* Frost blue for tags */
+}
+
+.nord .xml-attribute-name {
+  color: oklch(0.7 0.12 220); /* #88c0d0 */
+}
+
+.nord .xml-attribute-equals {
+  color: oklch(0.75 0.02 230); /* Dim white */
+}
+
+.nord .xml-attribute-value {
+  color: oklch(0.7 0.15 140); /* #a3be8c green */
+}
+
+.nord .xml-comment {
+  color: oklch(0.5 0.04 230); /* Dim text */
+  font-style: italic;
+}
+
+.nord .xml-cdata {
+  color: oklch(0.7 0.12 220); /* Frost blue */
+}
+
+.nord .xml-doctype {
+  color: oklch(0.7 0.2 320); /* #b48ead purple */
+}
+
+.nord .xml-text {
+  color: oklch(0.9 0.01 230); /* Snow white */
+}