Stitch redesign, Energieversorger-Kampagne, UI improvements

- Apply Stitch design system to leadspeicher, suche, TopBar, globals.css
- Add Energieversorger queue campaign (Netzbetreiber, Fernwärme, Industriepark)
  with BW + Bayern priority, tracks usage per term+location combo
- Remove TopBar right-side actions (Leads finden, bell, settings)
- Remove mode tabs from manual search, rename KI button
- Fix Google Fonts @import order (move to <link> in layout.tsx)
- Add cursor-pointer globally via globals.css
- Responsive fixes for campaign buttons and KI button
- Fix .dockerignore to exclude .env from image build
- Add stadtwerke-cities API + city data (50 cities per Bundesland)

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

app/globals.css

@@ -1,21 +1,80 @@
 @import "tailwindcss";
 
+@theme {
+  /* Stitch Solar Design System Colors */
+  --color-background: #0d1419;
+  --color-surface: #0d1419;
+  --color-surface-dim: #0d1419;
+  --color-surface-container-lowest: #080f13;
+  --color-surface-container-low: #161c21;
+  --color-surface-container: #1a2025;
+  --color-surface-container-high: #242b30;
+  --color-surface-container-highest: #2f363b;
+  --color-surface-bright: #333a3f;
+  --color-surface-variant: #2f363b;
+  --color-surface-tint: #adc7ff;
+  --color-primary: #adc7ff;
+  --color-primary-container: #1a73e8;
+  --color-primary-fixed: #d8e2ff;
+  --color-primary-fixed-dim: #adc7ff;
+  --color-on-primary: #002e68;
+  --color-on-primary-container: #ffffff;
+  --color-on-primary-fixed: #001a41;
+  --color-on-primary-fixed-variant: #004493;
+  --color-secondary: #ffb77b;
+  --color-secondary-container: #fb8c00;
+  --color-secondary-fixed: #ffdcc2;
+  --color-secondary-fixed-dim: #ffb77b;
+  --color-on-secondary: #4c2700;
+  --color-on-secondary-container: #5f3200;
+  --color-on-secondary-fixed: #2e1500;
+  --color-on-secondary-fixed-variant: #6d3a00;
+  --color-tertiary: #a0d82c;
+  --color-tertiary-container: #5c8200;
+  --color-tertiary-fixed: #baf549;
+  --color-tertiary-fixed-dim: #a0d82c;
+  --color-on-tertiary: #243600;
+  --color-on-tertiary-container: #ffffff;
+  --color-on-tertiary-fixed: #131f00;
+  --color-on-tertiary-fixed-variant: #364e00;
+  --color-on-surface: #dce3ea;
+  --color-on-surface-variant: #c1c6d6;
+  --color-on-background: #dce3ea;
+  --color-outline: #8b909f;
+  --color-outline-variant: #414754;
+  --color-error: #ffb4ab;
+  --color-error-container: #93000a;
+  --color-on-error: #690005;
+  --color-on-error-container: #ffdad6;
+  --color-inverse-surface: #dce3ea;
+  --color-inverse-on-surface: #2a3136;
+  --color-inverse-primary: #005bc0;
+
+  /* Font families */
+  --font-headline: 'Manrope', sans-serif;
+  --font-body: 'Inter', sans-serif;
+  --font-label: 'Inter', sans-serif;
+}
+
+button { cursor: pointer; }
+button:disabled { cursor: not-allowed; }
+
 @keyframes shimmer {
   0%   { transform: translateX(-100%); }
   100% { transform: translateX(400%); }
 }
 
 :root {
-  --background: #0a0a0f;
-  --card: #111118;
-  --border: #1e1e2e;
-  --primary: #3b82f6;
-  --secondary: #8b5cf6;
-  --success: #22c55e;
-  --warning: #f59e0b;
-  --error: #ef4444;
-  --foreground: #f0f0f5;
-  --muted: #6b7280;
+  --background: #0d1419;
+  --card: #161c21;
+  --border: #414754;
+  --primary: #adc7ff;
+  --secondary: #fb8c00;
+  --success: #a0d82c;
+  --warning: #ffb77b;
+  --error: #ffb4ab;
+  --foreground: #dce3ea;
+  --muted: #c1c6d6;
 }
 
 * {
@@ -23,13 +82,35 @@
 }
 
 body {
-  background-color: var(--background);
-  color: var(--foreground);
-  font-family: var(--font-inter), Inter, system-ui, -apple-system, sans-serif;
+  background-color: #0d1419;
+  color: #dce3ea;
+  font-family: 'Inter', system-ui, -apple-system, sans-serif;
+}
+
+h1, h2, h3, h4, h5, h6 {
+  font-family: 'Manrope', sans-serif;
+}
+
+.material-symbols-outlined {
+  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
+  font-family: 'Material Symbols Outlined';
+  font-style: normal;
+  line-height: 1;
+  letter-spacing: normal;
+  text-transform: none;
+  display: inline-block;
+  white-space: nowrap;
+  word-wrap: normal;
+  direction: ltr;
+  -webkit-font-feature-settings: 'liga';
+  -webkit-font-smoothing: antialiased;
 }
 
 /* Scrollbar */
 ::-webkit-scrollbar { width: 6px; height: 6px; }
-::-webkit-scrollbar-track { background: #0a0a0f; }
-::-webkit-scrollbar-thumb { background: #1e1e2e; border-radius: 3px; }
-::-webkit-scrollbar-thumb:hover { background: #3b82f6; }
+::-webkit-scrollbar-track { background: #0d1419; }
+::-webkit-scrollbar-thumb { background: #414754; border-radius: 3px; }
+::-webkit-scrollbar-thumb:hover { background: #adc7ff; }
+
+.no-scrollbar::-webkit-scrollbar { display: none; }
+.no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }