fix(workshopper): fix docker dns collisions for proxy and database

[yinggez]

Infrastructure & Deployment Fixes
-Fixed NGINX Docker DNS Collision
-Hardened Database Connection
-Documentation Updates (AUTH.md)

Frontend Code Refactoring
-Extracted Shared Utilities (lib/utils.ts & lib/constants.ts)
-Component Modularization:
-Extracted InlineEditText into a dedicated, reusable component to clean up the timetable views.
-Extracted SortableBlockRow to isolate the complex drag-and-drop row rendering logic.
-Cleaned Up Dashboards

[florivn]

Copilot:
✅ Infrastructure fixes are solid:

• Docker DNS collision fix is correctly applied across all three locations (nginx.conf routes, compose.prod.yaml, and documented in AUTH.md)
• The hardened POSTGRES_HOST change prevents future DNS issues

✅ Refactoring is safe & well-executed:

• Type exports are properly defined: EditTarget and DndActivityBlock exported from WorkshopGeneratedTimetable.tsx (lines 37, 47)
• All imports are correct and match the exports
• Zero behavioral changes—pure code organization
• The extracted components (SortableBlockRow, InlineEditText) have all their handlers wired correctly with proper prop drilling

✅ Centralized utilities work correctly:

• parseStepDuration() correctly extracts duration from step strings and is used in three places (lines 164, 196 in main component)
• getSessionStatus() consolidates redundant status logic cleanly
• Constants (phaseEmojis, phaseRowColors, etc.) are properly accessed in both new component files