fix(dockerfile): prevent crash loop when migration fails

Change && to ; so the bot still starts even if db:migrate exits
with a non-zero code. Migration errors are logged but don't block
the main process.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Dockerfile

@@ -14,4 +14,4 @@ COPY src/db ./src/db
 COPY drizzle.config.ts ./
 RUN bun add -d drizzle-kit
 
-CMD ["sh", "-c", "bun run db:migrate && bun run src/index.ts"]
+CMD ["sh", "-c", "bun run db:migrate; bun run src/index.ts"]