docs(astro): Update getting started page

platform-includes/getting-started-config/javascript.astro.mdx

@@ -1,4 +1,11 @@
-Get started by adding your DSN to your Astro config file (`astro.config.mjs`):
+Configuration should happen as early as possible in your application's lifecycle.
+
+To set up the Sentry SDK, register the Sentry integration and initialize the SDK for client and server in the root directory of your project:
+
+- Client-Side: `sentry.client.config.ts` containing a `Sentry.init` call
+- Server-Side: `sentry.server.config.ts` containing a `Sentry.init` call
+
+### Astro Integration Setup
 
 
 ```javascript {filename:astro.config.mjs}
@@ -8,7 +15,6 @@ import sentry from "@sentry/astro";
 export default defineConfig({
   integrations: [
     sentry({
-      dsn: "___PUBLIC_DSN___",
       sourceMapsUploadOptions: {
         project: "___PROJECT_SLUG___",
         authToken: process.env.SENTRY_AUTH_TOKEN,
@@ -18,4 +24,57 @@ export default defineConfig({
 });
 ```
 
-Once you've added your `dsn`, the SDK will automatically capture and send errors and performance events to Sentry.
+<Alert level="warning">
+  Passing runtime-specific configuration options to the Sentry integration will be deprecated in future versions.
+  We recommend passing your configuration directly to the respective `Sentry.init()` calls in `sentry.client.config.js` and `sentry.server.config.js` instead.
+</Alert>
+
+### Client-side Setup
+
+```javascript {filename:sentry.client.config.js} {"onboardingOptions": {"performance": "7,11-13", "session-replay": "8,14-21"}}
+import * as Sentry from "@sentry/astro";
+
+Sentry.init({
+  dsn: "___PUBLIC_DSN___",
+
+  integrations: [
+    Sentry.browserTracingIntegration(),
+    Sentry.replayIntegration(),
+  ],
+
+  // Define how likely traces are sampled. Adjust this value in production,
+  // or use tracesSampler for greater control.
+  tracesSampleRate: 1.0,
+
+  // This sets the sample rate to be 10%. You may want this to be 100% while
+  // in development and sample at a lower rate in production
+  replaysSessionSampleRate: 0.1,
+
+  // If the entire session is not sampled, use the below sample rate to sample
+  // sessions when an error occurs.
+  replaysOnErrorSampleRate: 1.0,
+});
+```
+
+### Server-side Setup
+
+```javascript {filename:sentry.server.config.js} {"onboardingOptions": {"performance": "10-13", "profiling": "2,6-9,14-17"}}
+import * as Sentry from "@sentry/astro";
+import { nodeProfilingIntegration } from '@sentry/profiling-node';
+
+Sentry.init({
+  dsn: "___PUBLIC_DSN___",
+  integrations: [
+    // Add our Profiling integration
+    nodeProfilingIntegration(),
+  ],
+
+  // Define how likely traces are sampled. Adjust this value in production,
+  // or use tracesSampler for greater control.
+  tracesSampleRate: 1.0,
+
+  // Set sampling rate for profiling
+  // This is relative to tracesSampleRate
+  profilesSampleRate: 1.0
+});
+```

platform-includes/getting-started-install/javascript.astro.mdx

@@ -1,17 +1,36 @@
-Install the SDK by using the `astro` CLI:
+<OnboardingOptionButtons
+  options={["error-monitoring", "performance", "profiling", "session-replay"]}
+/>
+
+<OnboardingOption optionId="profiling" hideForThisOption>
+
+```bash {tabTitle:npm}
+npm install @sentry/astro --save
+```
+
+```bash {tabTitle:yarn}
+yarn add @sentry/astro
+```
+
+```bash {tabTitle:pnpm}
+pnpm add @sentry/astro
+```
+
+</OnboardingOption>
+
+<OnboardingOption optionId="profiling">
 
 ```bash {tabTitle:npm}
-npx astro add @sentry/astro
+npm install @sentry/astro @sentry/profiling-node --save
 ```
 
 ```bash {tabTitle:yarn}
-yarn astro add @sentry/astro
+yarn add @sentry/astro @sentry/profiling-node
 ```
 
 ```bash {tabTitle:pnpm}
-pnpm astro add @sentry/astro
+pnpm add @sentry/astro @sentry/profiling-node
 ```
 
-The `astro` CLI installs the SDK package and adds the Sentry integration to your `astro.config.mjs` file.
+</OnboardingOption>
 
-To finish the setup, configure the Sentry integration.