feat(ops): Caddy fragment for mechanic.pptaxi.ru

ops/Caddyfile.fragment

@@ -0,0 +1,39 @@
+# Caddy fragment for Premium Mechanic PWA on mechanic.pptaxi.ru.
+# Apply on VDS 100.64.0.12 by copying/including into /etc/caddy/Caddyfile
+# (or /etc/caddy/sites-enabled/ if the main Caddyfile uses imports).
+#
+# Assumes:
+# - TaxiDashboard backend listens on 127.0.0.1:8000
+# - Frontend PWA build is rsynced to /opt/sites/mechanic-pwa/dist/
+
+mechanic.pptaxi.ru {
+    encode gzip zstd
+
+    # PWA: pass /api/* to the backend so the frontend can use relative URLs.
+    handle /api/* {
+        reverse_proxy 127.0.0.1:8000
+    }
+
+    # PWA static files with SPA fallback to index.html.
+    handle {
+        root * /opt/sites/mechanic-pwa/dist
+        try_files {path} /index.html
+        file_server
+    }
+
+    log {
+        output file /var/log/caddy/mechanic.pptaxi.ru.log {
+            roll_size 50mb
+            roll_keep 5
+        }
+    }
+
+    header {
+        # Basic security headers for a PWA
+        Referrer-Policy strict-origin-when-cross-origin
+        X-Content-Type-Options nosniff
+        X-Frame-Options DENY
+        # Camera permission for our origin only
+        Permissions-Policy "camera=(self), microphone=(self), geolocation=()"
+    }
+}