Drag canvas cards from their whole surface outside explicit edit mode

apps/studio/src/styles/infinite-canvas.module.css

@@ -7,3 +7,5 @@
 /* Dock and contextual actions leave both sides of the canvas clear. */
 .rail{left:50%;top:auto;bottom:18px;transform:translateX(-50%);width:auto;height:58px;flex-direction:row;padding:7px 10px;gap:8px;border-radius:19px}.rail hr{width:1px;height:27px;border:0;background:#465059}.rail button{width:40px;height:40px;border-radius:11px;transition:transform .16s,background .16s}.rail button:hover{transform:translateY(-5px) scale(1.08)}.canvasBottom{top:16px;bottom:auto;left:auto;right:16px;flex-direction:column;align-items:flex-end}.canvasBottom>span{display:none}.contextMenu{position:absolute;z-index:10;width:240px;max-height:min(420px,calc(100dvh - 24px));overflow:auto;padding:8px;background:#252b30f5;border:1px solid #47525b;border-radius:14px;box-shadow:0 16px 50px #0005;backdrop-filter:blur(18px)}.contextMenu>button{display:flex;width:100%;justify-content:flex-start;border:0;background:transparent}.menuTitle{display:flex;align-items:center;justify-content:space-between;padding:3px 6px 8px;font-size:11px;color:#aebac4}.menuTitle button{padding:3px 8px}.contextMenu label{display:block;padding:8px;font-size:11px}.contextMenu select{display:block;width:100%;padding:8px;margin-top:6px;background:#171c20;color:inherit;border:1px solid #46515a;border-radius:6px}.card footer{display:flex;align-items:center;justify-content:space-between;padding:7px 12px}.card footer button{padding:2px 8px;border:0;background:transparent}.app[data-theme=light]{color-scheme:light;color:#25323b;background:#f5f6f8}.app[data-theme=dark]{color-scheme:dark}.app[data-theme=light] .viewport{background-color:#f5f6f8;background-image:radial-gradient(circle,#b8c3cc 1px,transparent 1px)}.app[data-theme=light] .header,.app[data-theme=light] .rail,.app[data-theme=light] .controls,.app[data-theme=light] .contextMenu{background:#ffffffed;border-color:#d3dce3;box-shadow:0 8px 28px #3c52601a}.app[data-theme=light] button{background:#edf1f4;border-color:#d5dfe5;color:#344650}.app[data-theme=light] button:hover{background:#dde6eb}.app[data-theme=light] .card{background:#fff;border-color:#b8c8d2;box-shadow:0 10px 30px #31465918}.app[data-theme=light] .cardHead{background:#eef3f6;color:#405663}.app[data-theme=light] .cardBody input,.app[data-theme=light] .cardBody textarea,.app[data-theme=light] .contextMenu select{background:#f7f9fa;color:#243641;border-color:#d6e0e6}.app[data-theme=light] .nodeType,.app[data-theme=light] .disconnected,.app[data-theme=light] .menuTitle{color:#567047}.app[data-theme=light] .selected{border-color:#60863b}.app[data-theme=light] .card footer{border-color:#e1e7eb;color:#526878}.app[data-theme=light] .wires path{stroke:#628e3e;opacity:.9}.app[data-theme=light] .brand span{color:#60863b}.app[data-theme=light] .rail button[aria-pressed=true]{background:#d8e9c4;color:#34501d}@media(max-width:700px){.rail{left:50%;bottom:12px;gap:4px;height:54px;padding:5px 8px}.rail button{width:36px;height:36px}.canvasBottom{top:70px;right:10px;bottom:auto}.controls{gap:0}.controls button{padding:5px}}
 .rail button{background:transparent;color:#bfcbd3}.rail button[aria-pressed=true]{background:#d9ef9b;color:#24301d}.app[data-theme=light] .rail button{background:transparent;color:#405663}.app[data-theme=light] .rail button[aria-pressed=true]{background:#d8e9c4;color:#34501d}
+/* Preview cards drag from any content area; editing is an explicit mode. */
+.preview{cursor:grab;user-select:none;touch-action:none}.preview:active{cursor:grabbing}.preview input,.preview textarea{pointer-events:none;user-select:none}.preview .image{cursor:grab}.preview img{-webkit-user-drag:none;pointer-events:none}.editing{cursor:default}.editing .cardBody{user-select:text}.editing .image{cursor:pointer}.editing{outline:2px solid #93b569;outline-offset:3px}.card footer{gap:6px}.card footer>button:first-of-type{margin-left:auto}