feat(web): enable desktop webcam capture in WebPlatformService

- Updated WebPlatformService.takePicture() to use getUserMedia for webcam capture on desktop browsers, providing a live video preview and capture button in an overlay.
- Retained file input with capture attribute for mobile browsers and as a fallback if webcam access fails.
- Ensured interface and factory pattern compatibility; no changes required in PhotoDialog.vue or PlatformServiceFactory.
- Added a stub for writeAndShareFile to satisfy the PlatformService interface on web.

package.json

@@ -24,7 +24,7 @@
     "build:pywebview": "vite build --config vite.config.pywebview.mts",
     "build:electron": "npm run clean:electron && tsc -p tsconfig.electron.json && vite build --config vite.config.electron.mts && node scripts/build-electron.js",
     "build:capacitor": "vite build --mode capacitor --config vite.config.capacitor.mts",
-    "build:web": "vite build --config vite.config.web.mts",
+    "build:web": "VITE_GIT_HASH=`git log -1 --pretty=format:%h` vite build --config vite.config.web.mts",
     "electron:dev": "npm run build && electron .",
     "electron:start": "electron .",
     "clean:android": "adb uninstall app.timesafari.app || true",

src/services/platforms/WebPlatformService.ts

@@ -72,18 +72,18 @@ export class WebPlatformService implements PlatformService {
   }
 
   /**
-   * Opens a file input dialog configured for camera capture.
+   * Opens the device camera for photo capture on desktop browsers using getUserMedia.
-   * Creates a temporary file input element to access the device camera.
+   * On mobile browsers, uses file input with capture attribute.
+   * Falls back to file input if getUserMedia is not available or fails.
    *
    * @returns Promise resolving to the captured image data
-   * @throws Error if image capture fails or no image is selected
-   *
-   * @remarks
-   * Uses the 'capture' attribute to prefer the device camera.
-   * Falls back to file selection if camera is not available.
-   * Processes the captured image to ensure consistent format.
    */
   async takePicture(): Promise<ImageResult> {
+    const isMobile = /iPhone|iPad|iPod|Android/i.test(navigator.userAgent);
+    const hasGetUserMedia = !!(navigator.mediaDevices && navigator.mediaDevices.getUserMedia);
+
+    // If on mobile, use file input with capture attribute (existing behavior)
+    if (isMobile || !hasGetUserMedia) {
       return new Promise((resolve, reject) => {
         const input = document.createElement("input");
         input.type = "file";
@@ -112,6 +112,111 @@ export class WebPlatformService implements PlatformService {
       });
     }
 
+    // Desktop: Use getUserMedia for webcam capture
+    return new Promise(async (resolve, reject) => {
+      let stream: MediaStream | null = null;
+      let video: HTMLVideoElement | null = null;
+      let captureButton: HTMLButtonElement | null = null;
+      let overlay: HTMLDivElement | null = null;
+      let cleanup = () => {
+        if (stream) {
+          stream.getTracks().forEach((track) => track.stop());
+        }
+        if (video && video.parentNode) video.parentNode.removeChild(video);
+        if (captureButton && captureButton.parentNode) captureButton.parentNode.removeChild(captureButton);
+        if (overlay && overlay.parentNode) overlay.parentNode.removeChild(overlay);
+      };
+      try {
+        stream = await navigator.mediaDevices.getUserMedia({ video: { facingMode: "user" } });
+        // Create overlay for video and button
+        overlay = document.createElement("div");
+        overlay.style.position = "fixed";
+        overlay.style.top = "0";
+        overlay.style.left = "0";
+        overlay.style.width = "100vw";
+        overlay.style.height = "100vh";
+        overlay.style.background = "rgba(0,0,0,0.8)";
+        overlay.style.display = "flex";
+        overlay.style.flexDirection = "column";
+        overlay.style.justifyContent = "center";
+        overlay.style.alignItems = "center";
+        overlay.style.zIndex = "9999";
+
+        video = document.createElement("video");
+        video.autoplay = true;
+        video.playsInline = true;
+        video.style.maxWidth = "90vw";
+        video.style.maxHeight = "70vh";
+        video.srcObject = stream;
+        overlay.appendChild(video);
+
+        captureButton = document.createElement("button");
+        captureButton.textContent = "Capture Photo";
+        captureButton.style.marginTop = "2rem";
+        captureButton.style.padding = "1rem 2rem";
+        captureButton.style.fontSize = "1.2rem";
+        captureButton.style.background = "#2563eb";
+        captureButton.style.color = "white";
+        captureButton.style.border = "none";
+        captureButton.style.borderRadius = "0.5rem";
+        captureButton.style.cursor = "pointer";
+        overlay.appendChild(captureButton);
+
+        document.body.appendChild(overlay);
+
+        captureButton.onclick = async () => {
+          try {
+            // Create a canvas to capture the frame
+            const canvas = document.createElement("canvas");
+            canvas.width = video!.videoWidth;
+            canvas.height = video!.videoHeight;
+            const ctx = canvas.getContext("2d");
+            ctx?.drawImage(video!, 0, 0, canvas.width, canvas.height);
+            canvas.toBlob((blob) => {
+              cleanup();
+              if (blob) {
+                resolve({
+                  blob,
+                  fileName: `photo_${Date.now()}.jpg`,
+                });
+              } else {
+                reject(new Error("Failed to capture image from webcam"));
+              }
+            }, "image/jpeg", 0.95);
+          } catch (err) {
+            cleanup();
+            reject(err);
+          }
+        };
+      } catch (error) {
+        cleanup();
+        logger.error("Error accessing webcam:", error);
+        // Fallback to file input
+        const input = document.createElement("input");
+        input.type = "file";
+        input.accept = "image/*";
+        input.onchange = async (e) => {
+          const file = (e.target as HTMLInputElement).files?.[0];
+          if (file) {
+            try {
+              const blob = await this.processImageFile(file);
+              resolve({
+                blob,
+                fileName: file.name || "photo.jpg",
+              });
+            } catch (error) {
+              logger.error("Error processing fallback image:", error);
+              reject(new Error("Failed to process fallback image"));
+            }
+          } else {
+            reject(new Error("No image selected"));
+          }
+        };
+        input.click();
+      }
+    });
+  }
+
   /**
    * Opens a file input dialog for selecting an image file.
    * Creates a temporary file input element to access local files.
@@ -228,4 +333,14 @@ export class WebPlatformService implements PlatformService {
     // Web platform can handle deep links through URL parameters
     return Promise.resolve();
   }
+
+  /**
+   * Not supported in web platform.
+   * @param _fileName - Unused fileName parameter
+   * @param _content - Unused content parameter
+   * @throws Error indicating file system access is not available
+   */
+  async writeAndShareFile(_fileName: string, _content: string): Promise<void> {
+    throw new Error("File system access not available in web platform");
+  }
 }