docs(03): complete Phase 3 Images

- All 4 plans executed successfully
- 5/5 success criteria verified
- CameraCapture replaced with native file input for HTTP compatibility

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

Dockerfile.dev

@@ -0,0 +1,21 @@
+FROM node:22-alpine
+
+WORKDIR /app
+
+# Install better-sqlite3 build dependencies
+RUN apk add --no-cache python3 make g++
+
+# Copy package files
+COPY package*.json ./
+
+# Install dependencies
+RUN npm install
+
+# Copy source
+COPY . .
+
+# Expose dev server port
+EXPOSE 5173
+
+# Run dev server bound to all interfaces
+CMD ["npm", "run", "dev", "--", "--host", "0.0.0.0"]