feat(ui): add run/edit workflow and improve preset color editing

Made-with: Cursor

src/static/style.css

@@ -77,6 +77,11 @@ header h1 {
     background-color: #333;
 }
 
+/* Header/menu actions that should only appear in Edit mode */
+body.preset-ui-run .edit-mode-only {
+    display: none !important;
+}
+
 .btn {
     padding: 0.45rem 0.9rem;
     border: none;
@@ -596,6 +601,52 @@ header h1 {
     position: relative;
 }
 
+/* Preset tile: main button + optional edit/remove (Edit mode) */
+.preset-tile-row {
+    display: flex;
+    flex-direction: row;
+    align-items: stretch;
+    min-width: 0;
+    min-height: 0;
+}
+
+.preset-tile-row--run .preset-tile-actions {
+    display: none;
+}
+
+.preset-tile-main {
+    flex: 1;
+    min-width: 0;
+    height: 5rem;
+}
+
+.preset-tile-actions {
+    display: flex;
+    flex-direction: column;
+    gap: 0.2rem;
+    justify-content: center;
+    flex-shrink: 0;
+    padding: 0.15rem 0 0.15rem 0.25rem;
+}
+
+.preset-tile-actions .btn {
+    flex: 1 1 0;
+    min-height: 0;
+    padding: 0.15rem 0.35rem;
+    font-size: 0.68rem;
+    line-height: 1.15;
+    white-space: nowrap;
+}
+
+.ui-mode-toggle--edit {
+    background-color: #4a3f8f;
+    border: 1px solid #7b6fd6;
+}
+
+.ui-mode-toggle--edit:hover {
+    background-color: #5a4f9f;
+}
+
 /* Preset select buttons inside the tab grid */
 #presets-list-tab .pattern-button {
     display: flex;