feat(boards): ESP-EYE ad card + declarative builtInCamera on ProBoardDef

Overlay boards with a camera now declare builtInCamera on their def (bool,
or { maxFrameBytes } for drivers with tight frame buffers) and the canvas
CameraToggle keys off it - the hardcoded esp32-cam / xiao-esp32s3-sense
kinds keep working unchanged.

frontend/src/components/simulator/SimulatorCanvas.tsx

@@ -2731,15 +2731,22 @@ export const SimulatorCanvas = ({ headerSlot }: SimulatorCanvasProps = {}) => {
                     ESP32-CAM (OV2640 over I2S0 DVP) and the XIAO ESP32S3
                     Sense (OV2640-compatible over LCD_CAM). */}
                 {(activeBoard?.boardKind === 'esp32-cam' ||
-                  activeBoard?.boardKind === 'xiao-esp32s3-sense') && (
+                  activeBoard?.boardKind === 'xiao-esp32s3-sense' ||
+                  (activeBoard &&
+                    Boolean(getProBoard(activeBoard.boardKind)?.builtInCamera))) && (
                   <CameraToggle
                     boardId={activeBoard.id}
                     // The S3 esp32-camera build allocates width*height/5 bytes
                     // for a QVGA JPEG frame (15360) and stops copying at
                     // fb_size - one 1 KiB DMA half-buffer: frames must stay
                     // under ~14336 or the EOI marker is truncated (NO-EOI).
+                    // Overlay boards declare their cap on builtInCamera.
                     maxFrameBytes={
-                      activeBoard.boardKind === 'xiao-esp32s3-sense' ? 14000 : undefined
+                      activeBoard.boardKind === 'xiao-esp32s3-sense'
+                        ? 14000
+                        : ((cam) => (typeof cam === 'object' ? cam.maxFrameBytes : undefined))(
+                            getProBoard(activeBoard.boardKind)?.builtInCamera,
+                          )
                     }
                   />
                 )}

frontend/src/lib/onlineOnlyBoards.ts

@@ -47,6 +47,22 @@ export function isOnlineOnlyAdSuppressed(id: string): boolean {
 }
 
 export const ONLINE_ONLY_BOARD_ADS: OnlineOnlyBoardAd[] = [
+  {
+    id: 'esp-eye',
+    label: 'ESP-EYE',
+    description: 'Espressif AI vision devkit: ESP32 + OV2640 camera, I2S mic, face-recognition heritage — in-browser emulation',
+    thumbnailSvg:
+      '<svg width="72" height="72" viewBox="0 0 72 72" xmlns="http://www.w3.org/2000/svg">' +
+      '<rect x="20" y="4" width="32" height="64" rx="5" fill="#131316"/>' +
+      '<circle cx="36" cy="26" r="12" fill="#1c1c20" stroke="#33343a"/>' +
+      '<circle cx="36" cy="26" r="8" fill="#060608" stroke="#2f2f34"/>' +
+      '<circle cx="36" cy="26" r="3" fill="#101722"/>' +
+      '<rect x="30" y="42" width="12" height="10" fill="#d8b44a"/>' +
+      '<rect x="26" y="56" width="20" height="6" rx="1.5" fill="#b8bec6"/>' +
+      '<circle cx="47" cy="46" r="2.2" fill="#ff4030"/>' +
+      '<circle cx="25" cy="46" r="2.2" fill="#e8e8ea"/>' +
+      '</svg>',
+  },
   {
     id: 'esp32-c3-lcdkit',
     label: 'ESP32-C3-LCDkit',

frontend/src/lib/proBoardRegistry.ts

@@ -105,6 +105,10 @@ export interface ProBoardDef {
    *  setMicrophoneSource (I2S RX sample injection): shows the canvas-header
    *  Mic toggle that streams the computer's microphone into it. */
   builtInMicrophone?: boolean;
+  /** The board carries a camera fed from the host webcam (CameraToggle in the
+   *  canvas header; the bridge implements pushCameraFrame). An object form
+   *  caps the injected JPEG size for drivers with tight frame buffers. */
+  builtInCamera?: boolean | { maxFrameBytes?: number };
   /** Display-controller identity for panel autodetect probes. Vendor
    *  libraries (M5GFX and friends) identify a board by reading the panel's
    *  RDDID over SPI with the display's own chip-select — and reject the