chore: clean image names, gitignore project docs, frontend design review

- deploy: add explicit image names (netguardia, netguardia-router, netguardia-endpoint)
- gitignore: exclude CLAUDE.md, DESIGN.md, TODOS.md from tracking
- frontend: Toast system, skeleton loading, mobile sidebar, a11y, cross-nav links

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitignore

@@ -36,3 +36,8 @@ license_pub.key
 .gstack/
 interfaces.txt
 traffic_log.csv
+
+# Project docs (local only)
+CLAUDE.md
+DESIGN.md
+TODOS.md

deploy/compose/podman-compose.yml

@@ -5,6 +5,7 @@ services:
     build:
       context: ..
       dockerfile: compose/Containerfile.netguardia
+    image: netguardia:latest
     container_name: netguardia
     hostname: netguardia
     privileged: true
@@ -32,6 +33,7 @@ services:
     build:
       context: ..
       dockerfile: compose/Containerfile.router
+    image: netguardia-router:latest
     container_name: router
     hostname: router
     cap_add:
@@ -43,6 +45,7 @@ services:
     build:
       context: ..
       dockerfile: compose/Containerfile.endpoint
+    image: netguardia-endpoint:latest
     container_name: external
     hostname: external
     cap_add:
@@ -55,6 +58,7 @@ services:
     build:
       context: ..
       dockerfile: compose/Containerfile.endpoint
+    image: netguardia-endpoint:latest
     container_name: internal
     hostname: internal
     cap_add:

net-guardia-frontend

@@ -1 +1 @@
-Subproject commit 599f170385f6c36071dbb7be4664db7edfdcdf3e
+Subproject commit 87780a13110c4de044f572a1b87e366905d65ec2