feat: vanilla docs

Author: izadoesdev

apps/docs/components/sidebar-content.tsx

@@ -67,6 +67,11 @@ export const contents: SidebarSection[] = [
 				href: '/docs/sdk',
 				icon: AtomIcon,
 			},
+			{
+				title: 'Vanilla JavaScript',
+				href: '/docs/vanilla-js',
+				icon: FileTextIcon,
+			},
 			{
 				title: 'Node SDK',
 				href: '/docs/node-sdk',

apps/docs/content/docs/meta.json

@@ -9,6 +9,7 @@
     "getting-started",
     "---Implementation---",
     "sdk",
+    "vanilla-js",
     "node-sdk",
     "api",
     "api-keys",

apps/docs/content/docs/sdk.mdx

@@ -503,6 +503,27 @@ import { clear } from "@databuddy/sdk";
 clear();
 ```
 
+### Tracking ID Helpers
+
+Get anonymous and session IDs for attribution tracking across redirects:
+
+```javascript
+import { getAnonymousId, getSessionId, getTrackingParams } from "@databuddy/sdk";
+
+// Get individual IDs
+const anonId = getAnonymousId();
+const sessionId = getSessionId();
+
+// Get as URL params string (for redirects)
+const trackingParams = getTrackingParams();
+const signupUrl = `https://app.databuddy.cc/register?${trackingParams}`;
+window.location.href = signupUrl;
+```
+
+**Priority order**: URL params → tracker instance → localStorage/sessionStorage
+
+These helpers automatically fall back through multiple sources to find the IDs, perfect for preserving user attribution across signup flows and redirects.
+
 ### `flush()`
 
 Force immediate sending of queued events: