feat(infra): Meet integration, La Suite theming, Pingora SSH + meet routes

Meet: add backend/frontend/celery deployments and services, meet-config
ConfigMap, nginx SPA config, VSO secrets (meet-db-credentials VDS,
meet-django-secret and meet-livekit VSS). Wire oidc-meet OAuth2Client.

La Suite overlay discipline: move people/docs frontend nginx ConfigMaps
and patches from overlays/local to base so both environments share them.
Remove values-ory.yaml (folded into base). Add docs-frontend nginx config
with sub_filter theming. Add local gitea mkcert CA patch.

Pingora: add [ssh] TCP passthrough block (port 22 → Gitea SSH pod) and
split meet route into frontend default + backend paths for /api/, /admin/,
/oidc/, /static/, /__. Remove now-unused values-pingora.yaml from production
overlay (host ports moved to patch-pingora-hostport.yaml).

Update both overlay kustomizations to reference all new resources and
add meet-backend/meet-frontend image entries.

base/lasuite/docs-frontend-nginx-configmap.yaml

@@ -0,0 +1,38 @@
+# nginx config for docs-frontend that injects the brand theme CSS at serve time.
+# sub_filter injects the theme.css link before </head> so Cunningham CSS variables
+# are overridden at runtime without rebuilding the app.
+# gzip must be off for sub_filter to work on HTML responses.
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: docs-frontend-nginx-conf
+  namespace: lasuite
+data:
+  default.conf: |
+    server {
+      listen 8080;
+      listen 3000;
+      server_name localhost;
+
+      root /app;
+
+      gzip off;
+      sub_filter '</head>' '<link rel="preconnect" href="https://fonts.googleapis.com"><link rel="preconnect" href="https://fonts.gstatic.com" crossorigin><link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Ysabeau+Variable:ital,wght@0,100..900;1,100..900&display=swap"><link rel="stylesheet" href="https://integration.DOMAIN_SUFFIX/api/v2/theme.css"></head>';
+      sub_filter_once off;
+      sub_filter_types text/html;
+
+      location / {
+          try_files $uri index.html $uri/index.html =404;
+          add_header X-Frame-Options DENY always;
+      }
+
+      location ~ "^/docs/[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}/?$" {
+          try_files $uri /docs/[id]/index.html;
+          add_header X-Frame-Options DENY always;
+      }
+
+      error_page 404 /404.html;
+      location = /404.html {
+          internal;
+      }
+    }