feat: micro-learning module with seed data

- Add Course and Module models to Prisma schema
- Create seed-learn.json with Daily Fiqh for Beginners (5 modules)
- Create seed-learn.js with Hermes patch (strip id/courseId from create)
- Add /learn page with course listing
- Add /learn/[courseSlug]/[moduleId] page with content + quiz
- Quiz data stored as JSON string per module
- Content rendered as markdown with Key Concept, Details, Reflection, Action Step sections

TODO:
- Add audio player component for listen toggle
- Add progress tracking per user
- Add actual quiz scoring/validation
- Connect to TTS pipeline for audio generation

Dockerfile

@@ -0,0 +1,30 @@
+FROM node:20-slim AS base
+
+FROM base AS deps
+RUN apt-get update && apt-get install -y --no-install-recommends openssl && rm -rf /var/lib/apt/lists/*
+WORKDIR /app
+COPY package.json package-lock.json* ./
+RUN npm ci
+
+FROM base AS builder
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+RUN npx prisma generate && npm run build
+
+FROM base AS runner
+WORKDIR /app
+ENV NODE_ENV=production
+RUN apt-get update && apt-get install -y --no-install-recommends openssl ca-certificates && rm -rf /var/lib/apt/lists/*
+RUN addgroup --system --gid 1001 nodejs
+RUN adduser --system --uid 1001 nextjs
+RUN mkdir -p /app/data
+COPY --from=builder /app/.next/standalone ./
+COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
+COPY --from=builder /app/prisma ./prisma
+RUN npx prisma generate
+RUN mkdir -p /app/public
+USER nextjs
+EXPOSE 3000
+ENV PORT=3000
+CMD ["node", "server.js"]