feat: add dnsmasq DNS record admin UI

- store records in SQLite via built-in node:sqlite, no native deps
- wrap DB reads in await io() so they stay out of the static shell
- add CRUD pages backed by Server Actions with per-request data
- generate managed config and restart container via Docker socket
- add /resolve page to query dnsmasq for A and CNAME records
- add Dockerfile and compose setup with shared config volume

app/globals.css

@@ -1,26 +1,26 @@
 @import "tailwindcss";
 
 :root {
-  --background: #ffffff;
-  --foreground: #171717;
+    --background: #ffffff;
+    --foreground: #171717;
 }
 
 @theme inline {
-  --color-background: var(--background);
-  --color-foreground: var(--foreground);
-  --font-sans: var(--font-geist-sans);
-  --font-mono: var(--font-geist-mono);
+    --color-background: var(--background);
+    --color-foreground: var(--foreground);
+    --font-sans: var(--font-geist-sans);
+    --font-mono: var(--font-geist-mono);
 }
 
 @media (prefers-color-scheme: dark) {
-  :root {
-    --background: #0a0a0a;
-    --foreground: #ededed;
-  }
+    :root {
+        --background: #0a0a0a;
+        --foreground: #ededed;
+    }
 }
 
 body {
-  background: var(--background);
-  color: var(--foreground);
-  font-family: Arial, Helvetica, sans-serif;
+    background: var(--background);
+    color: var(--foreground);
+    font-family: Arial, Helvetica, sans-serif;
 }