Fix Gitea Issue #1: Text-Generator Verbesserungen

- Rahmenform Standard auf 'Rechteck' gesetzt (statt 'Keiner')
- Pfeile werden nun korrekt im SVG-Bereich dargestellt (viewBox + Padding)
- Numerische Eingabefelder neben allen Slidern hinzugefügt
- Text-Positionierung im Rahmen ermöglicht (horizontal + vertikal)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

symbols/css/text-generator.css

@@ -245,6 +245,34 @@
     color: var(--gray-600);
 }
 
+/* ========== ALIGN OPTIONS ========== */
+.align-options {
+    display: flex;
+    gap: 0.35rem;
+}
+
+.align-btn {
+    padding: 0.4rem 0.65rem;
+    border: 1px solid var(--gray-300);
+    background: white;
+    border-radius: 6px;
+    cursor: pointer;
+    font-size: 0.8rem;
+    transition: all 0.2s;
+    color: var(--gray-600);
+}
+
+.align-btn:hover {
+    border-color: var(--primary);
+    color: var(--primary);
+}
+
+.align-btn.active {
+    background: var(--primary);
+    color: white;
+    border-color: var(--primary);
+}
+
 /* ========== ARROW OPTIONS ========== */
 .arrow-options {
     display: flex;
@@ -320,6 +348,34 @@ input[type="range"]::-moz-range-thumb {
     border: none;
 }
 
+/* ========== NUMBER INPUTS ========== */
+.num-input {
+    width: 55px;
+    padding: 0.25rem 0.4rem;
+    border: 1px solid var(--gray-300);
+    border-radius: 4px;
+    font-size: 0.8rem;
+    text-align: center;
+    transition: border-color 0.2s, box-shadow 0.2s;
+}
+
+.num-input:focus {
+    outline: none;
+    border-color: var(--primary);
+    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
+}
+
+.num-input::-webkit-inner-spin-button,
+.num-input::-webkit-outer-spin-button {
+    opacity: 1;
+}
+
+.num-unit {
+    font-size: 0.75rem;
+    color: var(--gray-500);
+    min-width: 20px;
+}
+
 /* ========== RESET BUTTON ========== */
 .btn-reset {
     background: #ef4444;