feat: Add complete PDPA compliance pages

- Admin dashboard (/admin/consent-logs) with password auth
- Consent API (/api/consent) with SQLite + IP hashing
- Privacy Policy (Thai) - PDPA Section 36 compliant
- Terms & Conditions (Thai) - 9 standard clauses
- .env.example template with Umami placeholder

All pages preserve current design system.

dealplustech-astro/node_modules/astro-consent/dist/index.d.ts

@@ -0,0 +1,15 @@
+import type { AstroIntegration } from "astro";
+export interface AstroConsentOptions {
+    siteName?: string;
+    policyUrl?: string;
+    consent?: {
+        days?: number;
+        storageKey?: string;
+    };
+    categories?: {
+        essential?: boolean;
+        analytics?: boolean;
+        marketing?: boolean;
+    };
+}
+export default function astroConsent(options?: AstroConsentOptions): AstroIntegration;