feat: portfolio redesign with i18n, RBC project showcase, CI/CD

- Add i18n support (EN/ZH) with language toggle
- Redesign header with education dropdown, contact copy buttons
- Add RBC project showcase with bullet points, skills highlighting
- Create terraform-drift placeholder page
- Add ProjectShowcase component with media toggle (image/video)
- Update experience timeline with action-driven descriptions
- Add Docker + Forgejo CI workflow for image builds
- Update K8s manifests for riotpiao.com ingress
- Add DESIGN.md documenting design system patterns

infra/argocd-apps.yaml

@@ -6,7 +6,7 @@ metadata:
 spec:
   project: default
   source:
-    repoURL: https://forgejo.riotpiao.homelab.com/rock/riotpiao.git
+    repoURL: https://forgejo.riotpiao.com/rock/riotpiao.git
     targetRevision: main
     path: infra/portfolio/base
   destination:
@@ -27,7 +27,7 @@ metadata:
 spec:
   project: default
   source:
-    repoURL: https://forgejo.riotpiao.homelab.com/rock/riotpiao.git
+    repoURL: https://forgejo.riotpiao.com/rock/riotpiao.git
     targetRevision: main
     path: infra/homarr/base
   destination:
@@ -48,7 +48,7 @@ metadata:
 spec:
   project: default
   source:
-    repoURL: https://forgejo.riotpiao.homelab.com/rock/riotpiao.git
+    repoURL: https://forgejo.riotpiao.com/rock/riotpiao.git
     targetRevision: main
     path: infra/auth-infra/base
   destination: