Update demo booking URLs to lemcal.com

[devin-ai-integration]

Update demo booking URLs to lemcal.com

Summary

Updates the default booking URLs in the demo form from Cal.com to lemcal.com:

• Small companies (< 10 employees): https://app.lemcal.com/@jhtevis/30-minutes?back=1
• Enterprise companies (10+ employees): https://app.lemcal.com/@alek/reflex-demo?back=1

The existing routing logic based on company size is preserved - only the default URL values are updated.

Review & Testing Checklist for Human

• Test end-to-end booking flow for small companies - Fill out demo form with 1-10 employees and verify it redirects to @jhtevis/30-minutes URL
• Test end-to-end booking flow for enterprise companies - Fill out demo form with 11+ employees and verify it redirects to @alek/reflex-demo URL
• Verify query parameter handling - Confirm that form data (name, email, company, etc.) is properly appended to the lemcal.com URLs
• Validate new URLs are accessible - Manually visit both lemcal.com URLs to ensure they load correctly

Notes

• Changes only affect environment variable default values; can still be overridden via env vars if needed
• Unable to test locally due to reflex environment setup issues, so manual testing is critical
• Link to Devin run: https://app.devin.ai/sessions/201dca17080d42e790ab24fc266bcf42
• Requested by: @Alek99

[devin-ai-integration]

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