Rebrand from Casera/MyCrib to honeyDue

Total rebrand across Web project:
- Package name: casera-web -> honeydue-web
- Cookie: casera-token -> honeydue-token
- Theme store: casera-theme -> honeydue-theme
- File sharing: .casera -> .honeydue, component/function renames
- casera-file-handler.tsx -> honeydue-file-handler.tsx
- All UI text, metadata, OG tags updated
- Domains: casera.treytartt.com -> honeyDue.treytartt.com
- Demo data emails updated
- All documentation updated

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

docs/04-demo-mode.md

@@ -261,7 +261,7 @@ Persistent banner at the top of the demo app:
 
 ```
 ┌─────────────────────────────────────────────────────────────────┐
-│ 🎯 You're exploring Casera in demo mode.  [Sign Up Free]      │
+│ 🎯 You're exploring honeyDue in demo mode.  [Sign Up Free]      │
 │    Changes aren't saved. Create an account to get started!     │
 └─────────────────────────────────────────────────────────────────┘
 ```
@@ -282,7 +282,7 @@ Before entering the demo, show a brief preview page:
 ```
 ┌─────────────────────────────────────────────────────┐
 │                                                     │
-│        🏠 Try Casera — No Account Needed            │
+│        🏠 Try honeyDue — No Account Needed            │
 │                                                     │
 │   Manage your home maintenance, track tasks,        │
 │   organize contractors, and store documents.         │