feat: add theme system, branding, and task logging

- Add light/dark/system theme toggle in settings
- Add DearDiary.io branding in navbar
- Add task logging for journal generation with request/response
- Rename project from TotalRecall to DearDiary
- Update Docker configuration

Dockerfile

@@ -0,0 +1,46 @@
+# Multi-stage build: Backend + Frontend
+FROM oven/bun:1.1-alpine AS backend-builder
+
+WORKDIR /app/backend
+COPY backend/package*.json ./
+RUN bun install
+COPY backend/prisma ./prisma
+RUN bunx prisma generate
+COPY backend/src ./src
+RUN bun build src/index.ts --outdir ./dist --target bun
+
+FROM node:20-alpine AS frontend-builder
+
+WORKDIR /app/frontend
+COPY frontend/package*.json ./
+RUN npm install
+COPY frontend ./
+RUN npm run build
+
+FROM oven/bun:1.1-alpine AS runner
+
+WORKDIR /app
+
+ENV NODE_ENV=production
+
+RUN addgroup --system --gid 1001 nodejs || true
+
+# Install nginx for serving frontend
+RUN apk add --no-cache nginx
+
+# Copy backend
+COPY --from=backend-builder /app/backend/dist ./dist
+COPY --from=backend-builder /app/backend/node_modules ./node_modules
+COPY backend/package.json .
+COPY backend/prisma ./prisma
+
+# Copy frontend build
+COPY --from=frontend-builder /app/frontend/dist ./public
+
+# Setup nginx
+COPY nginx.conf /etc/nginx/http.d/default.conf
+
+RUN mkdir -p /data /run /app/nginx_tmp /var/lib/nginx/logs && chmod 777 /var/lib/nginx/logs /var/lib/nginx/tmp && chown -R bun:nodejs /data /app
+
+# Start everything as root
+CMD sh -c "nginx -g 'daemon off;' & bunx prisma db push --accept-data-loss & bun ./dist/index.js"