Sync kit docs (#972)

sync kit docs

Co-authored-by: Rich-Harris <[email protected]>

Author: github-actions[bot]

apps/svelte.dev/content/docs/kit/30-advanced/20-hooks.md

@@ -237,6 +237,25 @@ During development, if an error occurs because of a syntax error in your Svelte
 
 > [!NOTE] Make sure that `handleError` _never_ throws an error
 
+### init
+
+This function runs once, when the server is created or the app starts in the browser, and is a useful place to do asynchronous work such as initializing a database connection.
+
+> [!NOTE] If your environment supports top-level await, the `init` function is really no different from writing your initialisation logic at the top level of the module, but some environments — most notably, Safari — don't.
+
+```js
+/// file: src/hooks.server.js
+import * as db from '$lib/server/database';
+
+/** @type {import('@sveltejs/kit').ServerInit} */
+export async function init() {
+	await db.connect();
+}
+```
+
+> [!NOTE]
+> In the browser, asynchronous work in `init` will delay hydration, so be mindful of what you put in there.
+
 ## Universal hooks
 
 The following can be added to `src/hooks.js`. Universal hooks run on both server and client (not to be confused with shared hooks, which are environment-specific).

apps/svelte.dev/content/docs/kit/98-reference/[email protected]

@@ -851,6 +851,24 @@ Compress files in `directory` with gzip and brotli, where appropriate. Generates
 </div>
 </div></div>
 
+## ClientInit
+
+<blockquote class="since note">
+
+Available since 2.10.0
+
+</blockquote>
+
+The [`init`](/docs/kit/hooks#Shared-hooks-init) will be invoked once the app starts in the browser
+
+<div class="ts-block">
+
+```dts
+type ClientInit = () => MaybePromise<void>;
+```
+
+</div>
+
 ## Config
 
 See the [configuration reference](/docs/kit/configuration) for details.
@@ -2347,6 +2365,24 @@ A `[file]: size` map of all assets imported by server code
 </div>
 </div></div>
 
+## ServerInit
+
+<blockquote class="since note">
+
+Available since 2.10.0
+
+</blockquote>
+
+The [`init`](/docs/kit/hooks#Shared-hooks-init) will be invoked before the server responds to its first request
+
+<div class="ts-block">
+
+```dts
+type ServerInit = () => MaybePromise<void>;
+```
+
+</div>
+
 ## ServerInitOptions
 
 <div class="ts-block">

apps/svelte.dev/content/docs/kit/98-reference/20-$app-navigation.md

@@ -43,7 +43,7 @@ function afterNavigate(
 
 ## beforeNavigate
 
-A navigation interceptor that triggers before we navigate to a new URL, whether by clicking a link, calling `goto(...)`, or using the browser back/forward controls.
+A navigation interceptor that triggers before we navigate to a URL, whether by clicking a link, calling `goto(...)`, or using the browser back/forward controls.
 
 Calling `cancel()` will prevent the navigation from completing. If `navigation.type === 'leave'` — meaning the user is navigating away from the app (or closing the tab) — calling `cancel` will trigger the native browser unload confirmation dialog. In this case, the navigation may or may not be cancelled depending on the user's response.