Rebrand from MyCrib to Casera

- Update Go module from mycrib-api to casera-api
- Update all import statements across 69 Go files
- Update admin panel branding (title, sidebar, login form)
- Update email templates (subjects, bodies, signatures)
- Update PDF report generation branding
- Update Docker container names and network
- Update config defaults (database name, email sender, APNS topic)
- Update README and documentation

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

docker/docker-compose.yml

@@ -11,7 +11,7 @@ services:
       - PORT=8000
       - DEBUG=true
       - SECRET_KEY=${SECRET_KEY:-development-secret-key}
-      - POSTGRES_DB=${POSTGRES_DB:-mycrib}
+      - POSTGRES_DB=${POSTGRES_DB:-casera}
       - POSTGRES_USER=${POSTGRES_USER:-postgres}
       - POSTGRES_PASSWORD=${POSTGRES_PASSWORD:-postgres}
       - DB_HOST=db
@@ -28,17 +28,17 @@ services:
         condition: service_healthy
     restart: unless-stopped
     networks:
-      - mycrib-network
+      - casera-network
 
   worker:
     build:
       context: ..
       dockerfile: docker/Dockerfile
-    command: ["./mycrib-worker"]
+    command: ["./casera-worker"]
     environment:
       - DEBUG=true
       - SECRET_KEY=${SECRET_KEY:-development-secret-key}
-      - POSTGRES_DB=${POSTGRES_DB:-mycrib}
+      - POSTGRES_DB=${POSTGRES_DB:-casera}
       - POSTGRES_USER=${POSTGRES_USER:-postgres}
       - POSTGRES_PASSWORD=${POSTGRES_PASSWORD:-postgres}
       - DB_HOST=db
@@ -51,12 +51,12 @@ services:
         condition: service_healthy
     restart: unless-stopped
     networks:
-      - mycrib-network
+      - casera-network
 
   db:
     image: postgres:15-alpine
     environment:
-      - POSTGRES_DB=${POSTGRES_DB:-mycrib}
+      - POSTGRES_DB=${POSTGRES_DB:-casera}
       - POSTGRES_USER=${POSTGRES_USER:-postgres}
       - POSTGRES_PASSWORD=${POSTGRES_PASSWORD:-postgres}
     volumes:
@@ -64,13 +64,13 @@ services:
     ports:
       - "5432:5432"
     healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-postgres} -d ${POSTGRES_DB:-mycrib}"]
+      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-postgres} -d ${POSTGRES_DB:-casera}"]
       interval: 5s
       timeout: 5s
       retries: 5
     restart: unless-stopped
     networks:
-      - mycrib-network
+      - casera-network
 
   redis:
     image: redis:7-alpine
@@ -85,12 +85,12 @@ services:
       retries: 5
     restart: unless-stopped
     networks:
-      - mycrib-network
+      - casera-network
 
 volumes:
   postgres_data:
   redis_data:
 
 networks:
-  mycrib-network:
+  casera-network:
     driver: bridge