Rebrand from Casera/MyCrib to honeyDue

Total rebrand across all Go API source files:
- Go module path: casera-api -> honeydue-api
- All imports updated (130+ files)
- Docker: containers, images, networks renamed
- Email templates: support email, noreply, icon URL
- Domains: casera.app/mycrib.treytartt.com -> honeyDue.treytartt.com
- Bundle IDs: com.tt.casera -> com.tt.honeyDue
- IAP product IDs updated
- Landing page, admin panel, config defaults
- Seeds, CI workflows, Makefile, docs
- Database table names preserved (no migration needed)

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

docs/openapi.yaml

@@ -1,8 +1,8 @@
 openapi: 3.0.3
 info:
-  title: Casera (MyCrib) API
+  title: honeyDue API
   description: |
-    REST API for the Casera property management platform.
+    REST API for the honeyDue property management platform.
     Consumed by iOS (SwiftUI) and Android (Compose) mobile clients via Kotlin Multiplatform.
 
     ## Authentication
@@ -24,10 +24,10 @@ info:
     All errors follow a consistent JSON shape. Validation errors include a `details` map.
   version: 2.0.0
   contact:
-    name: Casera Team
+    name: honeyDue Team
 
 servers:
-  - url: https://mycrib.treytartt.com/api
+  - url: https://honeyDue.treytartt.com/api
     description: Production
   - url: http://127.0.0.1:8000/api
     description: Local development (iOS simulator)
@@ -813,7 +813,7 @@ paths:
     post:
       tags: [Residences]
       operationId: generateSharePackage
-      summary: Generate a share package (.casera file metadata)
+      summary: Generate a share package (.honeydue file metadata)
       security:
         - tokenAuth: []
       parameters: