feat(matrix-nutriphi-bot): add Matrix bot for nutrition tracking

- NestJS bot with matrix-bot-sdk integration
- Commands: !help, !login, !analyze, !today, !week, !goals, !favorites, !tips
- Integrates with NutriPhi backend API (port 3023)
- User session management with JWT authentication
- Image analysis via Gemini AI (NutriPhi backend)
- Port 3316

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

services/matrix-nutriphi-bot/Dockerfile

@@ -0,0 +1,47 @@
+# Build stage
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+
+# Copy package files (exclude pnpm-lock.yaml to use npm)
+COPY package.json ./
+
+# Install dependencies using npm (more compatible with standard tooling)
+RUN npm install
+
+# Copy source
+COPY . .
+
+# Build using TypeScript
+RUN rm -rf dist && npx tsc -p tsconfig.build.json
+
+# Production stage
+FROM node:20-alpine AS runner
+
+WORKDIR /app
+
+# Create data directory for bot storage
+RUN mkdir -p /app/data
+
+# Copy package files
+COPY package.json ./
+
+# Install production dependencies only
+RUN npm install --omit=dev
+
+# Copy built files
+COPY --from=builder /app/dist ./dist
+
+# Create non-root user
+RUN addgroup --system --gid 1001 nodejs
+RUN adduser --system --uid 1001 nestjs
+RUN chown -R nestjs:nodejs /app
+USER nestjs
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
+  CMD wget --no-verbose --tries=1 --spider http://localhost:3316/health || exit 1
+
+EXPOSE 3316
+
+CMD ["node", "dist/main.js"]