Vercel deployment kept failing on build — had to switch to standalone output

API routes throwing fetch failed errors in production

Next.js App Router migration caused tons of import issues

TypeScript errors everywhere after adding new types

Path alias @/lib/utils not resolving properly

Missing dependencies breaking the build repeatedly

localStorage user name not persisting on refresh

Agent reasoning panel layout breaking on mobile

Telemetry stream logs not streaming in real-time

Callback simulation delays not working consistently

Message variant cards not highlighting selected state

Glassmorphism blur effects killing performance

Too many re-renders when agent was thinking

Goal suggestions dropdown overlapping other elements

Dark theme colors not consistent across phases

Launch button animation conflicting with state changes

Fake data seed not loading all 100 orders properly

Channel service simulation sometimes firing callbacks twice

Analytics numbers not updating after callbacks

Cursor Composer breaking layout when adding too many sections

Claude token limits forcing me to split prompts constantly

Trying to do everything in 3 days with no sleep

Balancing beautiful UI vs working backend logic

Over-engineering the Neural Core orb at 2 AM

Forgetting to close JSX tags multiple times

Fighting with Tailwind arbitrary values for glow effects

Deployment failed 7 times before it finally worked

Real-time telemetry looked fake until I added proper staggering

Human-in-the-loop approval flow was added last minute

Realizing I built something actually impressive in 72 hours