fix: run emdash seed only on first launch via entrypoint.sh

- Remove emdash seed from Dockerfile build stage (no longer overwrites DB)
- Add entrypoint.sh that checks if data.db exists before seeding
- First launch: seed runs to populate DB
- Subsequent redeploys: DB exists, seed skipped, data preserved
- Also remove COPY data.db from runner stage (volume mount handles persistence)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Dockerfile

@@ -15,7 +15,7 @@ WORKDIR /app
 COPY --from=deps /app/node_modules ./node_modules
 COPY . .
 
-RUN pnpm build && pnpm exec emdash init && pnpm exec emdash seed && mkdir -p uploads
+RUN pnpm build && pnpm exec emdash init && mkdir -p uploads
 
 FROM deps AS runner
 
@@ -26,8 +26,11 @@ ENV HOST=0.0.0.0
 
 COPY --from=builder /app/node_modules ./node_modules
 COPY --from=builder /app/dist ./dist
-COPY --from=builder /app/data.db ./data.db
+COPY --from=builder /app/uploads ./uploads
 
 EXPOSE 4321
 
-CMD ["node", "./dist/server/entry.mjs"]
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]