diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0458ddd856..1d2a0cb60e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -5,6 +5,7 @@ on:
   push:
     branches:
       - main
+      - next
   merge_group:
   pull_request:
     paths-ignore:
@@ -209,6 +210,11 @@ jobs:
           repository: withastro/docs
           ref: 5.0.0-beta
           path: smoke/docs
+          # For a commit event on the `next` branch (`ref_name`), use the `5.0.0-beta` branch.
+          # For a pull_request event merging into the `next` branch (`base_ref`), use the `5.0.0-beta` branch.
+          # NOTE: For a pull_request event, the `ref_name` is something like `<pr-number>/merge` than the branch name.
+          # NOTE: Perhaps docs repo should use a consistent `next` branch in the future.
+          ref: ${{ (github.ref_name == 'next' || github.base_ref == 'next') && '5.0.0-beta' || 'main' }}
 
       - name: Install dependencies
         run: pnpm install --no-frozen-lockfile
diff --git a/examples/component/package.json b/examples/component/package.json
index 938105fe4d..9bedcb8d76 100644
--- a/examples/component/package.json
+++ b/examples/component/package.json
@@ -15,7 +15,7 @@
   ],
   "scripts": {},
   "devDependencies": {
-    "astro": "^5.0.0-beta.5"
+    "astro": "^5.0.0-beta.6"
   },
   "peerDependencies": {
     "astro": "^4.0.0 || ^5.0.0"
diff --git a/package.json b/package.json
index d4ca4a1f06..d6d9bac89a 100644
--- a/package.json
+++ b/package.json
@@ -25,12 +25,11 @@
     "test:match": "cd packages/astro && pnpm run test:match",
     "test:unit": "cd packages/astro && pnpm run test:unit",
     "test:types": "cd packages/astro && pnpm run test:types",
-    "test:unit:match": "cd packages/astro && pnpm run test:unit:match",
     "test:smoke": "pnpm test:smoke:example && pnpm test:smoke:docs",
     "test:smoke:example": "turbo run build --concurrency=100% --filter=\"@example/*\"",
     "test:smoke:docs": "turbo run build --filter=docs",
     "test:check-examples": "node ./scripts/smoke/check.js",
-    "test:vite-ci": "cd packages/astro && pnpm run test:node",
+    "test:vite-ci": "cd packages/astro && pnpm run test:unit && pnpm run test:integration",
     "test:e2e": "cd packages/astro && pnpm playwright install chromium firefox && pnpm run test:e2e",
     "test:e2e:match": "cd packages/astro && pnpm playwright install chromium firefox && pnpm run test:e2e:match",
     "test:e2e:hosts": "turbo run test:hosted",
@@ -80,9 +79,6 @@
         "astro",
         "vite"
       ]
-    },
-    "patchedDependencies": {
-      "fs-fixture@2.4.0": "patches/fs-fixture@2.4.0.patch"
     }
   }
 }
diff --git a/packages/astro/CHANGELOG.md b/packages/astro/CHANGELOG.md
index c8c5970c50..cb56b64ae7 100644
--- a/packages/astro/CHANGELOG.md
+++ b/packages/astro/CHANGELOG.md
@@ -1,5 +1,6 @@
 # astro
 
+
 ## 5.0.0-beta.5
 
 ### Minor Changes
@@ -474,275 +475,6 @@
 
 - [#11974](https://github.com/withastro/astro/pull/11974) [`60211de`](https://github.com/withastro/astro/commit/60211defbfb2992ba17d1369e71c146d8928b09a) Thanks [@ascorbic](https://github.com/ascorbic)! - Exports the `RenderResult` type
 
-## 4.16.4
-
-### Patch Changes
-
-- [#12223](https://github.com/withastro/astro/pull/12223) [`79ffa5d`](https://github.com/withastro/astro/commit/79ffa5d9f75c16465134aa4ed4a3d1d59908ba8b) Thanks [@ArmandPhilippot](https://github.com/ArmandPhilippot)! - Fixes a false positive reported by the dev toolbar Audit app where a label was considered missing when associated with a button
-
-  The `button` element can be [used with a label](https://www.w3.org/TR/2011/WD-html5-author-20110809/forms.html#category-label) (e.g. to create a switch) and should not be reported as an accessibility issue when used as a child of a `label`.
-
-- [#12199](https://github.com/withastro/astro/pull/12199) [`c351352`](https://github.com/withastro/astro/commit/c3513523608f319b43c050e391be08e68b801329) Thanks [@ematipico](https://github.com/ematipico)! - Fixes a regression in the computation of `Astro.currentLocale`
-
-- [#12222](https://github.com/withastro/astro/pull/12222) [`fb55695`](https://github.com/withastro/astro/commit/fb5569583b11ef585cd0a79e97e7e9dc653f6afa) Thanks [@ematipico](https://github.com/ematipico)! - Fixes an issue where the edge middleware couldn't correctly compute the client IP address when calling `ctx.clientAddress()`
-
-## 4.16.3
-
-### Patch Changes
-
-- [#12220](https://github.com/withastro/astro/pull/12220) [`b049359`](https://github.com/withastro/astro/commit/b0493596dc338377198d0a39efc813dad515b624) Thanks [@bluwy](https://github.com/bluwy)! - Fixes accidental internal `setOnSetGetEnv` parameter rename that caused runtime errors
-
-- [#12197](https://github.com/withastro/astro/pull/12197) [`2aa2dfd`](https://github.com/withastro/astro/commit/2aa2dfd05dc7b7e6ad13451e6cc2afa9b1c92a32) Thanks [@ematipico](https://github.com/ematipico)! - Fix a regression where a port was incorrectly added to the `Astro.url`
-
-## 4.16.2
-
-### Patch Changes
-
-- [#12206](https://github.com/withastro/astro/pull/12206) [`12b0022`](https://github.com/withastro/astro/commit/12b00225067445629e5ae451d763d03f70065f88) Thanks [@bluwy](https://github.com/bluwy)! - Reverts https://github.com/withastro/astro/pull/12173 which caused `Can't modify immutable headers` warnings and 500 errors on Cloudflare Pages
-
-## 4.16.1
-
-### Patch Changes
-
-- [#12177](https://github.com/withastro/astro/pull/12177) [`a4ffbfa`](https://github.com/withastro/astro/commit/a4ffbfaa5cb460c12bd486fd75e36147f51d3e5e) Thanks [@matthewp](https://github.com/matthewp)! - Ensure we target scripts for execution in the router
-
-  Using `document.scripts` is unsafe because if the application has a `name="scripts"` this will shadow the built-in `document.scripts`. Fix is to use `getElementsByTagName` to ensure we're only grabbing real scripts.
-
-- [#12173](https://github.com/withastro/astro/pull/12173) [`2d10de5`](https://github.com/withastro/astro/commit/2d10de5f212323e6e19c7ea379826dcc18fe739c) Thanks [@ematipico](https://github.com/ematipico)! - Fixes a bug where Astro Actions couldn't redirect to the correct pathname when there was a rewrite involved.
-
-## 4.16.0
-
-### Minor Changes
-
-- [#12039](https://github.com/withastro/astro/pull/12039) [`710a1a1`](https://github.com/withastro/astro/commit/710a1a11f488ff6ed3da6d3e0723b2322ccfe27b) Thanks [@ematipico](https://github.com/ematipico)! - Adds a `markdown.shikiConfig.langAlias` option that allows [aliasing a non-supported code language to a known language](https://shiki.style/guide/load-lang#custom-language-aliases). This is useful when the language of your code samples is not [a built-in Shiki language](https://shiki.style/languages), but you want your Markdown source to contain an accurate language while also displaying syntax highlighting.
-
-  The following example configures Shiki to highlight `cjs` code blocks using the `javascript` syntax highlighter:
-
-  ```js
-  import { defineConfig } from 'astro/config';
-
-  export default defineConfig({
-    markdown: {
-      shikiConfig: {
-        langAlias: {
-          cjs: 'javascript',
-        },
-      },
-    },
-  });
-  ```
-
-  Then in your Markdown, you can use the alias as the language for a code block for syntax highlighting:
-
-  ````md
-  ```cjs
-  'use strict';
-
-  function commonJs() {
-    return 'I am a commonjs file';
-  }
-  ```
-  ````
-
-- [#11984](https://github.com/withastro/astro/pull/11984) [`3ac2263`](https://github.com/withastro/astro/commit/3ac2263ff6070136bec9cffb863c38bcc31ccdfe) Thanks [@chaegumi](https://github.com/chaegumi)! - Adds a new `build.concurreny` configuration option to specify the number of pages to build in parallel
-
-  **In most cases, you should not change the default value of `1`.**
-
-  Use this option only when other attempts to reduce the overall rendering time (e.g. batch or cache long running tasks like fetch calls or data access) are not possible or are insufficient.
-
-  Use this option only if the refactors are not possible. If the number is set too high, the page rendering may slow down due to insufficient memory resources and because JS is single-threaded.
-
-  > [!WARNING]
-  > This feature is stable and is not considered experimental. However, this feature is only intended to address difficult performance issues, and breaking changes may occur in a [minor release](https://docs.astro.build/en/upgrade-astro/#semantic-versioning) to keep this option as performant as possible.
-
-  ```js
-  // astro.config.mjs
-  import { defineConfig } from 'astro';
-
-  export default defineConfig({
-    build: {
-      concurrency: 2,
-    },
-  });
-  ```
-
-### Patch Changes
-
-- [#12160](https://github.com/withastro/astro/pull/12160) [`c6fd1df`](https://github.com/withastro/astro/commit/c6fd1df695d0f2a24bb49e6954064f92664ccf67) Thanks [@louisescher](https://github.com/louisescher)! - Fixes a bug where `astro.config.mts` and `astro.config.cts` weren't reloading the dev server upon modifications.
-
-- [#12130](https://github.com/withastro/astro/pull/12130) [`e96bcae`](https://github.com/withastro/astro/commit/e96bcae535ef2f0661f539c1d49690c531df2d4e) Thanks [@thehansys](https://github.com/thehansys)! - Fixes a bug in the parsing of `x-forwarded-\*` `Request` headers, where multiple values assigned to those headers were not correctly parsed.
-
-  Now, headers like `x-forwarded-proto: https,http` are correctly parsed.
-
-- [#12147](https://github.com/withastro/astro/pull/12147) [`9db755a`](https://github.com/withastro/astro/commit/9db755ab7cfe658ec426387e297bdcd32c4bc8de) Thanks [@ascorbic](https://github.com/ascorbic)! - Skips setting statusMessage header for HTTP/2 response
-
-  HTTP/2 doesn't support status message, so setting this was logging a warning.
-
-- [#12151](https://github.com/withastro/astro/pull/12151) [`bb6d37f`](https://github.com/withastro/astro/commit/bb6d37f94a283433994f9243189cb4386df0e11a) Thanks [@ematipico](https://github.com/ematipico)! - Fixes an issue where `Astro.currentLocale` wasn't incorrectly computed when the `defaultLocale` belonged to a custom locale path.
-
-- Updated dependencies [[`710a1a1`](https://github.com/withastro/astro/commit/710a1a11f488ff6ed3da6d3e0723b2322ccfe27b)]:
-  - @astrojs/markdown-remark@5.3.0
-
-## 4.15.12
-
-### Patch Changes
-
-- [#12121](https://github.com/withastro/astro/pull/12121) [`2490ceb`](https://github.com/withastro/astro/commit/2490cebdb93f13ee552cffa72b2e274d64e6b4a7) Thanks [@ascorbic](https://github.com/ascorbic)! - Support passing the values `Infinity` and `-Infinity` as island props.
-
-- [#12118](https://github.com/withastro/astro/pull/12118) [`f47b347`](https://github.com/withastro/astro/commit/f47b347da899c6e1dcd0b2e7887f7fce6ec8e270) Thanks [@Namchee](https://github.com/Namchee)! - Removes the `strip-ansi` dependency in favor of the native Node API
-
-- [#12126](https://github.com/withastro/astro/pull/12126) [`6e1dfeb`](https://github.com/withastro/astro/commit/6e1dfeb76bec09d24928bab798c6ad3280f42e84) Thanks [@ascorbic](https://github.com/ascorbic)! - Clear content layer cache when astro version changes
-
-- [#12117](https://github.com/withastro/astro/pull/12117) [`a46839a`](https://github.com/withastro/astro/commit/a46839a5c818b7de63c36d0c7e27f1a8f3b773dc) Thanks [@ArmandPhilippot](https://github.com/ArmandPhilippot)! - Updates Vite links to use their new domain
-
-- [#12124](https://github.com/withastro/astro/pull/12124) [`499fbc9`](https://github.com/withastro/astro/commit/499fbc91a6bdad8c86ff13a8caf1fa09433796b9) Thanks [@ascorbic](https://github.com/ascorbic)! - Allows special characters in Action names
-
-- [#12123](https://github.com/withastro/astro/pull/12123) [`b8673df`](https://github.com/withastro/astro/commit/b8673df51c6cc4ce6a288f8eb609b7a438a07d82) Thanks [@Princesseuh](https://github.com/Princesseuh)! - Fixes missing `body` property on CollectionEntry types for content layer entries
-
-- [#12132](https://github.com/withastro/astro/pull/12132) [`de35daa`](https://github.com/withastro/astro/commit/de35daa8517555c1b9c72bc7fe9cc955c4997a83) Thanks [@jcayzac](https://github.com/jcayzac)! - Updates the [`cookie`](https://npmjs.com/package/cookie) dependency to avoid the [CVE 2024-47764](https://nvd.nist.gov/vuln/detail/CVE-2024-47764) vulnerability.
-
-- [#12113](https://github.com/withastro/astro/pull/12113) [`a54e520`](https://github.com/withastro/astro/commit/a54e520d3c139fa123e7029c5933951b5c7f5a39) Thanks [@ascorbic](https://github.com/ascorbic)! - Adds a helpful error when attempting to render an undefined collection entry
-
-## 4.15.11
-
-### Patch Changes
-
-- [#12097](https://github.com/withastro/astro/pull/12097) [`11d447f`](https://github.com/withastro/astro/commit/11d447f66b1a0f39489c2600139ebfb565336ce7) Thanks [@ascorbic](https://github.com/ascorbic)! - Fixes error where references in content layer schemas sometimes incorrectly report as missing
-
-- [#12108](https://github.com/withastro/astro/pull/12108) [`918953b`](https://github.com/withastro/astro/commit/918953bd09f057131dfe029e810019c0909345cf) Thanks [@lameuler](https://github.com/lameuler)! - Fixes a bug where [data URL images](https://developer.mozilla.org/en-US/docs/Web/URI/Schemes/data) were not correctly handled. The bug resulted in an `ENAMETOOLONG` error.
-
-- [#12105](https://github.com/withastro/astro/pull/12105) [`42037f3`](https://github.com/withastro/astro/commit/42037f33e644d5a2bfba71377697fc7336ecb15b) Thanks [@ascorbic](https://github.com/ascorbic)! - Returns custom statusText that has been set in a Response
-
-- [#12109](https://github.com/withastro/astro/pull/12109) [`ea22558`](https://github.com/withastro/astro/commit/ea225585fd12d27006434266163512ca66ad572b) Thanks [@ematipico](https://github.com/ematipico)! - Fixes a regression that was introduced by an internal refactor of how the middleware is loaded by the Astro application. The regression was introduced by [#11550](https://github.com/withastro/astro/pull/11550).
-
-  When the edge middleware feature is opted in, Astro removes the middleware function from the SSR manifest, and this wasn't taken into account during the refactor.
-
-- [#12106](https://github.com/withastro/astro/pull/12106) [`d3a74da`](https://github.com/withastro/astro/commit/d3a74da19644477ffc81acf2a3efb26ad3335a5e) Thanks [@ascorbic](https://github.com/ascorbic)! - Handles case where an immutable Response object is returned from an endpoint
-
-- [#12090](https://github.com/withastro/astro/pull/12090) [`d49a537`](https://github.com/withastro/astro/commit/d49a537f2aaccd132154a15f1da4db471272ee90) Thanks [@markjaquith](https://github.com/markjaquith)! - Server islands: changes the server island HTML placeholder comment so that it is much less likely to get removed by HTML minifiers.
-
-## 4.15.10
-
-### Patch Changes
-
-- [#12084](https://github.com/withastro/astro/pull/12084) [`12dae50`](https://github.com/withastro/astro/commit/12dae50c776474748a80cb65c8bf1c67f0825cb0) Thanks [@Princesseuh](https://github.com/Princesseuh)! - Adds missing filePath property on content layer entries
-
-- [#12046](https://github.com/withastro/astro/pull/12046) [`d7779df`](https://github.com/withastro/astro/commit/d7779dfae7bc00ff94b1e4596ff5b4897f65aabe) Thanks [@martrapp](https://github.com/martrapp)! - View transitions: Fixes Astro's fade animation to prevent flashing during morph transitions.
-
-- [#12043](https://github.com/withastro/astro/pull/12043) [`1720c5b`](https://github.com/withastro/astro/commit/1720c5b1d2bfd106ad065833823aed622bee09bc) Thanks [@bluwy](https://github.com/bluwy)! - Fixes injected endpoint `prerender` option detection
-
-- [#12095](https://github.com/withastro/astro/pull/12095) [`76c5fbd`](https://github.com/withastro/astro/commit/76c5fbd6f3a8d41367f1d7033278d133d518213b) Thanks [@TheOtterlord](https://github.com/TheOtterlord)! - Fix installing non-stable versions of integrations with `astro add`
-
-## 4.15.9
-
-### Patch Changes
-
-- [#12034](https://github.com/withastro/astro/pull/12034) [`5b3ddfa`](https://github.com/withastro/astro/commit/5b3ddfadcb2d09b6cbd9cd42641f30ca565d0f58) Thanks [@ematipico](https://github.com/ematipico)! - Fixes an issue where the middleware wasn't called when a project uses `404.astro`.
-
-- [#12042](https://github.com/withastro/astro/pull/12042) [`243ecb6`](https://github.com/withastro/astro/commit/243ecb6d6146dc483b4726d0e76142fb25e56243) Thanks [@ematipico](https://github.com/ematipico)! - Fixes a problem in the Container API, where a polyfill wasn't correctly applied. This caused an issue in some environments where `crypto` isn't supported.
-
-- [#12038](https://github.com/withastro/astro/pull/12038) [`26ea5e8`](https://github.com/withastro/astro/commit/26ea5e814ab8c973e683fff62389fda28c180940) Thanks [@ascorbic](https://github.com/ascorbic)! - Resolves image paths in content layer with initial slash as project-relative
-
-  When using the `image()` schema helper, previously paths with an initial slash were treated as public URLs. This was to match the behavior of markdown images. However this is a change from before, where paths with an initial slash were treated as project-relative. This change restores the previous behavior, so that paths with an initial slash are treated as project-relative.
-
-## 4.15.8
-
-### Patch Changes
-
-- [#12014](https://github.com/withastro/astro/pull/12014) [`53cb41e`](https://github.com/withastro/astro/commit/53cb41e30ea5768bf33d9f6be608fb57d31b7b9e) Thanks [@ascorbic](https://github.com/ascorbic)! - Fixes an issue where component styles were not correctly included in rendered MDX
-
-- [#12031](https://github.com/withastro/astro/pull/12031) [`8c0cae6`](https://github.com/withastro/astro/commit/8c0cae6d1bd70b332286d83d0f01cfce5272fbbe) Thanks [@ematipico](https://github.com/ematipico)! - Fixes a bug where the rewrite via `next(/*..*/)` inside a middleware didn't compute the new `APIContext.params`
-
-- [#12026](https://github.com/withastro/astro/pull/12026) [`40e7a1b`](https://github.com/withastro/astro/commit/40e7a1b05d9e5ea3fcda176c9663bbcff86edb63) Thanks [@bluwy](https://github.com/bluwy)! - Initializes the Markdown processor only when there's `.md` files
-
-- [#12028](https://github.com/withastro/astro/pull/12028) [`d3bd673`](https://github.com/withastro/astro/commit/d3bd673392e63720e241d6a002a131a3564c169c) Thanks [@bluwy](https://github.com/bluwy)! - Handles route collision detection only if it matches `getStaticPaths`
-
-- [#12027](https://github.com/withastro/astro/pull/12027) [`dd3b753`](https://github.com/withastro/astro/commit/dd3b753aba6400558671d85214e27b8e4fb1654b) Thanks [@fviolette](https://github.com/fviolette)! - Add `selected` to the list of boolean attributes
-
-- [#12001](https://github.com/withastro/astro/pull/12001) [`9be3e1b`](https://github.com/withastro/astro/commit/9be3e1bba789af96d8b21d9c8eca8542cfb4ff77) Thanks [@uwej711](https://github.com/uwej711)! - Remove dependency on path-to-regexp
-
-## 4.15.7
-
-### Patch Changes
-
-- [#12000](https://github.com/withastro/astro/pull/12000) [`a2f8c5d`](https://github.com/withastro/astro/commit/a2f8c5d85ff15803f5cedf9148cd70ffc138ddef) Thanks [@ArmandPhilippot](https://github.com/ArmandPhilippot)! - Fixes an outdated link used to document Content Layer API
-
-- [#11915](https://github.com/withastro/astro/pull/11915) [`0b59fe7`](https://github.com/withastro/astro/commit/0b59fe74d5922c572007572ddca8d11482e2fb5c) Thanks [@azhirov](https://github.com/azhirov)! - Fix: prevent island from re-rendering when using transition:persist (#11854)
-
-## 4.15.6
-
-### Patch Changes
-
-- [#11993](https://github.com/withastro/astro/pull/11993) [`ffba5d7`](https://github.com/withastro/astro/commit/ffba5d716edcdfc42899afaa4188b7a4cd0c91eb) Thanks [@matthewp](https://github.com/matthewp)! - Fix getStaticPaths regression
-
-  This reverts a previous change meant to remove a dependency, to fix a regression with multiple nested spread routes.
-
-- [#11964](https://github.com/withastro/astro/pull/11964) [`06eff60`](https://github.com/withastro/astro/commit/06eff60cabb55d91fe4075421b1693b1ab33225c) Thanks [@TheOtterlord](https://github.com/TheOtterlord)! - Add wayland (wl-copy) support to `astro info`
-
-## 4.15.5
-
-### Patch Changes
-
-- [#11939](https://github.com/withastro/astro/pull/11939) [`7b09c62`](https://github.com/withastro/astro/commit/7b09c62b565cd7b50c35fb68d390729f936a43fb) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Adds support for Zod discriminated unions on Action form inputs. This allows forms with different inputs to be submitted to the same action, using a given input to decide which object should be used for validation.
-
-  This example accepts either a `create` or `update` form submission, and uses the `type` field to determine which object to validate against.
-
-  ```ts
-  import { defineAction } from 'astro:actions';
-  import { z } from 'astro:schema';
-
-  export const server = {
-    changeUser: defineAction({
-      accept: 'form',
-      input: z.discriminatedUnion('type', [
-        z.object({
-          type: z.literal('create'),
-          name: z.string(),
-          email: z.string().email(),
-        }),
-        z.object({
-          type: z.literal('update'),
-          id: z.number(),
-          name: z.string(),
-          email: z.string().email(),
-        }),
-      ]),
-      async handler(input) {
-        if (input.type === 'create') {
-          // input is { type: 'create', name: string, email: string }
-        } else {
-          // input is { type: 'update', id: number, name: string, email: string }
-        }
-      },
-    }),
-  };
-  ```
-
-  The corresponding `create` and `update` forms may look like this:
-
-  ```astro
-  ---
-  import { actions } from 'astro:actions';
-  ---
-
-  <!--Create-->
-  <form action={actions.changeUser} method="POST">
-    <input type="hidden" name="type" value="create" />
-    <input type="text" name="name" required />
-    <input type="email" name="email" required />
-    <button type="submit">Create User</button>
-  </form>
-
-  <!--Update-->
-  <form action={actions.changeUser} method="POST">
-    <input type="hidden" name="type" value="update" />
-    <input type="hidden" name="id" value="user-123" />
-    <input type="text" name="name" required />
-    <input type="email" name="email" required />
-    <button type="submit">Update User</button>
-  </form>
-  ```
-
 ## 5.0.0-alpha.6
 
 ### Major Changes
@@ -816,42 +548,6 @@
 
 - [#11983](https://github.com/withastro/astro/pull/11983) [`633eeaa`](https://github.com/withastro/astro/commit/633eeaa9d8a8a35bba638fde06fd8f52cc1c2ce3) Thanks [@uwej711](https://github.com/uwej711)! - Remove dependency on path-to-regexp
 
-## 4.15.4
-
-### Patch Changes
-
-- [#11879](https://github.com/withastro/astro/pull/11879) [`bd1d4aa`](https://github.com/withastro/astro/commit/bd1d4aaf8262187b4f132d7fe0365902131ddf1a) Thanks [@matthewp](https://github.com/matthewp)! - Allow passing a cryptography key via ASTRO_KEY
-
-  For Server islands Astro creates a cryptography key in order to hash props for the islands, preventing accidental leakage of secrets.
-
-  If you deploy to an environment with rolling updates then there could be multiple instances of your app with different keys, causing potential key mismatches.
-
-  To fix this you can now pass the `ASTRO_KEY` environment variable to your build in order to reuse the same key.
-
-  To generate a key use:
-
-  ```
-  astro create-key
-  ```
-
-  This will print out an environment variable to set like:
-
-  ```
-  ASTRO_KEY=PIAuyPNn2aKU/bviapEuc/nVzdzZPizKNo3OqF/5PmQ=
-  ```
-
-- [#11935](https://github.com/withastro/astro/pull/11935) [`c58193a`](https://github.com/withastro/astro/commit/c58193a691775af5c568e461c63040a42e2471f7) Thanks [@Princesseuh](https://github.com/Princesseuh)! - Fixes `astro add` not using the proper export point when adding certain adapters
-
-## 4.15.3
-
-### Patch Changes
-
-- [#11902](https://github.com/withastro/astro/pull/11902) [`d63bc50`](https://github.com/withastro/astro/commit/d63bc50d9940c1107e0fee7687e5c332549a0eff) Thanks [@ascorbic](https://github.com/ascorbic)! - Fixes case where content layer did not update during clean dev builds on Linux and Windows
-
-- [#11886](https://github.com/withastro/astro/pull/11886) [`7ff7134`](https://github.com/withastro/astro/commit/7ff7134b8038a3b798293b2218bbf6dd02d2ac32) Thanks [@matthewp](https://github.com/matthewp)! - Fixes a missing error message when actions throws during `astro sync`
-
-- [#11904](https://github.com/withastro/astro/pull/11904) [`ca54e3f`](https://github.com/withastro/astro/commit/ca54e3f819fad009ac3c3c8b57a26014a2652a73) Thanks [@wtchnm](https://github.com/wtchnm)! - perf(assets): avoid downloading original image when using cache
-
 ## 5.0.0-alpha.5
 
 ### Major Changes
@@ -1184,6 +880,532 @@
 
   As this is a potentially breaking change to your script behavior, please review your `<script>` tags and ensure that they behave as expected.
 
+## 5.0.0-alpha.1
+
+### Major Changes
+
+- [#11798](https://github.com/withastro/astro/pull/11798) [`e9e2139`](https://github.com/withastro/astro/commit/e9e2139bf788893566f5a3fe58daf1d24076f018) Thanks [@matthewp](https://github.com/matthewp)! - Unflag globalRoutePriority
+
+  The previously [experimental feature `globalRoutePriority`](https://docs.astro.build/en/reference/configuration-reference/#experimentalglobalroutepriority) is now the default in Astro 5.
+
+  This was a refactoring of route prioritization in Astro, making it so that injected routes, file-based routes, and redirects are all prioritized using the same logic. This feature has been enabled for all Starlight projects since it was added and should not affect most users.
+
+- [#11679](https://github.com/withastro/astro/pull/11679) [`ea71b90`](https://github.com/withastro/astro/commit/ea71b90c9c08ddd1d3397c78e2e273fb799f7dbd) Thanks [@florian-lefebvre](https://github.com/florian-lefebvre)! - The [`astro:env` feature introduced behind a flag](https://docs.astro.build/en/reference/configuration-reference/#experimentalglobalroutepriority) in [v4.10.0](https://github.com/withastro/astro/blob/main/packages/astro/CHANGELOG.md#x4100) is no longer experimental and is available for general use. If you have been waiting for stabilization before using `astro:env`, you can now do so.
+
+  This feature lets you configure a type-safe schema for your environment variables, and indicate whether they should be available on the server or the client.
+
+  To configure a schema, add the `env` option to your Astro config and define your client and server variables. If you were previously using this feature, please remove the experimental flag from your Astro config and move your entire `env` configuration unchanged to a top-level option.
+
+  ```js
+  import { defineConfig, envField } from 'astro/config';
+
+  export default defineConfig({
+    env: {
+      schema: {
+        API_URL: envField.string({ context: 'client', access: 'public', optional: true }),
+        PORT: envField.number({ context: 'server', access: 'public', default: 4321 }),
+        API_SECRET: envField.string({ context: 'server', access: 'secret' }),
+      },
+    },
+  });
+  ```
+
+  You can import and use your defined variables from the appropriate `/client` or `/server` module:
+
+  ```astro
+  ---
+  import { API_URL } from 'astro:env/client';
+  import { API_SECRET_TOKEN } from 'astro:env/server';
+
+  const data = await fetch(`${API_URL}/users`, {
+    method: 'GET',
+    headers: {
+      'Content-Type': 'application/json',
+      Authorization: `Bearer ${API_SECRET_TOKEN}`,
+    },
+  });
+  ---
+
+  <script>
+    import { API_URL } from 'astro:env/client';
+
+    fetch(`${API_URL}/ping`);
+  </script>
+  ```
+
+- [#11788](https://github.com/withastro/astro/pull/11788) [`7c0ccfc`](https://github.com/withastro/astro/commit/7c0ccfc26947b178584e3476584bcaa490c6ba86) Thanks [@ematipico](https://github.com/ematipico)! - Updates the default value of `security.checkOrigin` to `true`, which enables Cross-Site Request Forgery (CSRF) protection by default for pages rendered on demand.
+
+  If you had previously configured `security.checkOrigin: true`, you no longer need this set in your Astro config. This is now the default and it is safe to remove.
+
+  To disable this behavior and opt out of automatically checking that the “origin” header matches the URL sent by each request, you must explicitly set `security.checkOrigin: false`:
+
+  ```diff
+  export default defineConfig({
+  +  security: {
+  +    checkOrigin: false
+  +  }
+  })
+  ```
+
+- [#11741](https://github.com/withastro/astro/pull/11741) [`6617491`](https://github.com/withastro/astro/commit/6617491c3bc2bde87f7867d7dec2580781852cfc) Thanks [@bluwy](https://github.com/bluwy)! - Removes internal JSX handling and moves the responsibility to the `@astrojs/mdx` package directly. The following exports are also now removed:
+
+  - `astro/jsx/babel.js`
+  - `astro/jsx/component.js`
+  - `astro/jsx/index.js`
+  - `astro/jsx/renderer.js`
+  - `astro/jsx/server.js`
+  - `astro/jsx/transform-options.js`
+
+  If your project includes `.mdx` files, you must upgrade `@astrojs/mdx` to the latest version so that it doesn't rely on these entrypoints to handle your JSX.
+
+- [#11782](https://github.com/withastro/astro/pull/11782) [`9a2aaa0`](https://github.com/withastro/astro/commit/9a2aaa01ea427df3844bce8595207809a8d2cb94) Thanks [@Princesseuh](https://github.com/Princesseuh)! - Makes the `compiledContent` property of Markdown content an async function, this change should fix underlying issues where sometimes when using a custom image service and images inside Markdown, Node would exit suddenly without any error message.
+
+  ```diff
+  ---
+  import * as myPost from "../post.md";
+
+  - const content = myPost.compiledContent();
+  + const content = await myPost.compiledContent();
+  ---
+
+  <Fragment set:html={content} />
+  ```
+
+- [#11770](https://github.com/withastro/astro/pull/11770) [`cfa6a47`](https://github.com/withastro/astro/commit/cfa6a47ac7a541f99fdad46a68d0cca6e5816cd5) Thanks [@Princesseuh](https://github.com/Princesseuh)! - Removed support for the Squoosh image service. As the underlying library `libsquoosh` is no longer maintained, and the image service sees very little usage we have decided to remove it from Astro.
+
+  Our recommendation is to use the base Sharp image service, which is more powerful, faster, and more actively maintained.
+
+  ```diff
+  - import { squooshImageService } from "astro/config";
+  import { defineConfig } from "astro/config";
+
+  export default defineConfig({
+  -  image: {
+  -    service: squooshImageService()
+  -  }
+  });
+  ```
+
+  If you are using this service, and cannot migrate to the base Sharp image service, a third-party extraction of the previous service is available here: https://github.com/Princesseuh/astro-image-service-squoosh
+
+
+## 5.0.0-alpha.0
+
+### Major Changes
+
+- [#10742](https://github.com/withastro/astro/pull/10742) [`b6fbdaa`](https://github.com/withastro/astro/commit/b6fbdaa94a9ecec706a99e1938fbf5cd028c72e0) Thanks [@ematipico](https://github.com/ematipico)! - The lowest version of Node supported by Astro is now Node v18.17.1 and higher.
+
+- [#11715](https://github.com/withastro/astro/pull/11715) [`d74617c`](https://github.com/withastro/astro/commit/d74617cbd3278feba05909ec83db2d73d57a153e) Thanks [@Princesseuh](https://github.com/Princesseuh)! - Refactor the exported types from the `astro` module. There should normally be no breaking changes, but if you relied on some previously deprecated types, these might now have been fully removed.
+
+  In most cases, updating your code to move away from previously deprecated APIs in previous versions of Astro should be enough to fix any issues.
+
+- [#11660](https://github.com/withastro/astro/pull/11660) [`e90f559`](https://github.com/withastro/astro/commit/e90f5593d23043579611452a84b9e18ad2407ef9) Thanks [@bluwy](https://github.com/bluwy)! - Fixes attribute rendering for non-[boolean HTML attributes](https://developer.mozilla.org/en-US/docs/Glossary/Boolean/HTML) with boolean values to match proper attribute handling in browsers.
+
+  Previously, non-boolean attributes may not have included their values when rendered to HTML. In Astro v5.0, the values are now explicitly rendered as `="true"` or `="false"`
+
+  In the following `.astro` examples, only `allowfullscreen` is a boolean attribute:
+
+  ```astro
+  <!-- src/pages/index.astro --><!-- `allowfullscreen` is a boolean attribute -->
+  <p allowfullscreen={true}></p>
+  <p allowfullscreen={false}></p>
+
+  <!-- `inherit` is *not* a boolean attribute -->
+  <p inherit={true}></p>
+  <p inherit={false}></p>
+
+  <!-- `data-*` attributes are not boolean attributes -->
+  <p data-light={true}></p>
+  <p data-light={false}></p>
+  ```
+
+  Astro v5.0 now preserves the full data attribute with its value when rendering the HTML of non-boolean attributes:
+
+  ```diff
+    <p allowfullscreen></p>
+    <p></p>
+
+    <p inherit="true"></p>
+  - <p inherit></p>
+  + <p inherit="false"></p>
+
+  - <p data-light></p>
+  + <p data-light="true"></p>
+  - <p></p>
+  + <p data-light="false"></p>
+  ```
+
+  If you rely on attribute values, for example to locate elements or to conditionally render, update your code to match the new non-boolean attribute values:
+
+  ```diff
+  - el.getAttribute('inherit') === ''
+  + el.getAttribute('inherit') === 'false'
+
+  - el.hasAttribute('data-light')
+  + el.dataset.light === 'true'
+  ```
+
+- [#11714](https://github.com/withastro/astro/pull/11714) [`8a53517`](https://github.com/withastro/astro/commit/8a5351737d6a14fc55f1dafad8f3b04079e81af6) Thanks [@matthewp](https://github.com/matthewp)! - Remove support for functionPerRoute
+
+  This change removes support for the `functionPerRoute` option both in Astro and `@astrojs/vercel`.
+
+  This option made it so that each route got built as separate entrypoints so that they could be loaded as separate functions. The hope was that by doing this it would decrease the size of each function. However in practice routes use most of the same code, and increases in function size limitations made the potential upsides less important.
+
+  Additionally there are downsides to functionPerRoute, such as hitting limits on the number of functions per project. The feature also never worked with some Astro features like i18n domains and request rewriting.
+
+  Given this, the feature has been removed from Astro.
+
+### Patch Changes
+
+- [#11745](https://github.com/withastro/astro/pull/11745) [`89bab1e`](https://github.com/withastro/astro/commit/89bab1e70786123fbe933a9d7a1b80c9334dcc5f) Thanks [@bluwy](https://github.com/bluwy)! - Prints prerender dynamic value usage warning only if it's used
+
+- [#11730](https://github.com/withastro/astro/pull/11730) [`2df49a6`](https://github.com/withastro/astro/commit/2df49a6fb4f6d92fe45f7429430abe63defeacd6) Thanks [@florian-lefebvre](https://github.com/florian-lefebvre)! - Simplifies path operations of `astro sync`
+
+- Updated dependencies [[`83a2a64`](https://github.com/withastro/astro/commit/83a2a648418ad30f4eb781d1c1b5f2d8a8ac846e)]:
+  - @astrojs/markdown-remark@6.0.0-alpha.0
+
+
+## 4.16.6
+
+### Patch Changes
+
+- [#11823](https://github.com/withastro/astro/pull/11823) [`a3d30a6`](https://github.com/withastro/astro/commit/a3d30a602aaa1755197c73f0b51cace61f9088b3) Thanks [@DerTimonius](https://github.com/DerTimonius)! - fix: improve error message when inferSize is used in local images with the Image component
+
+- [#12227](https://github.com/withastro/astro/pull/12227) [`8b1a641`](https://github.com/withastro/astro/commit/8b1a641be9de4baa9ae48dd0d045915fbbeffa8c) Thanks [@florian-lefebvre](https://github.com/florian-lefebvre)! - Fixes a case where environment variables would not be refreshed when using `astro:env`
+
+- [#12239](https://github.com/withastro/astro/pull/12239) [`2b6daa5`](https://github.com/withastro/astro/commit/2b6daa5840c18729c41f6cd8b4571b88d0cba119) Thanks [@ematipico](https://github.com/ematipico)! - **BREAKING CHANGE to the experimental Container API only**
+
+  Changes the default page rendering behavior of Astro components in containers, and adds a new option `partial: false` to render full Astro pages as before.
+
+  Previously, the Container API was rendering all Astro components as if they were full Astro pages containing `<!DOCTYPE html>` by default. This was not intended, and now by default, all components will render as [page partials](https://docs.astro.build/en/basics/astro-pages/#page-partials): only the contents of the components without a page shell.
+
+  To render the component as a full-fledged Astro page, pass a new option called `partial: false` to `renderToString()` and `renderToResponse()`:
+
+  ```js
+  import { experimental_AstroContainer as AstroContainer } from 'astro/container';
+  import Card from '../src/components/Card.astro';
+
+  const container = AstroContainer.create();
+
+  await container.renderToString(Card); // the string will not contain `<!DOCTYPE html>`
+  await container.renderToString(Card, { partial: false }); // the string will contain `<!DOCTYPE html>`
+  ```
+
+## 4.16.5
+
+### Patch Changes
+
+- [#12232](https://github.com/withastro/astro/pull/12232) [`ff68ba5`](https://github.com/withastro/astro/commit/ff68ba5e1ca00f06d1afd5fbf89acea3092bb660) Thanks [@martrapp](https://github.com/martrapp)! - Fixes an issue with cssesc in dev mode when setting `vite.ssr.noExternal: true`
+
+## 4.16.4
+
+### Patch Changes
+
+- [#12223](https://github.com/withastro/astro/pull/12223) [`79ffa5d`](https://github.com/withastro/astro/commit/79ffa5d9f75c16465134aa4ed4a3d1d59908ba8b) Thanks [@ArmandPhilippot](https://github.com/ArmandPhilippot)! - Fixes a false positive reported by the dev toolbar Audit app where a label was considered missing when associated with a button
+
+  The `button` element can be [used with a label](https://www.w3.org/TR/2011/WD-html5-author-20110809/forms.html#category-label) (e.g. to create a switch) and should not be reported as an accessibility issue when used as a child of a `label`.
+
+- [#12199](https://github.com/withastro/astro/pull/12199) [`c351352`](https://github.com/withastro/astro/commit/c3513523608f319b43c050e391be08e68b801329) Thanks [@ematipico](https://github.com/ematipico)! - Fixes a regression in the computation of `Astro.currentLocale`
+
+- [#12222](https://github.com/withastro/astro/pull/12222) [`fb55695`](https://github.com/withastro/astro/commit/fb5569583b11ef585cd0a79e97e7e9dc653f6afa) Thanks [@ematipico](https://github.com/ematipico)! - Fixes an issue where the edge middleware couldn't correctly compute the client IP address when calling `ctx.clientAddress()`
+
+## 4.16.3
+
+### Patch Changes
+
+- [#12220](https://github.com/withastro/astro/pull/12220) [`b049359`](https://github.com/withastro/astro/commit/b0493596dc338377198d0a39efc813dad515b624) Thanks [@bluwy](https://github.com/bluwy)! - Fixes accidental internal `setOnSetGetEnv` parameter rename that caused runtime errors
+
+- [#12197](https://github.com/withastro/astro/pull/12197) [`2aa2dfd`](https://github.com/withastro/astro/commit/2aa2dfd05dc7b7e6ad13451e6cc2afa9b1c92a32) Thanks [@ematipico](https://github.com/ematipico)! - Fix a regression where a port was incorrectly added to the `Astro.url`
+
+## 4.16.2
+
+### Patch Changes
+
+- [#12206](https://github.com/withastro/astro/pull/12206) [`12b0022`](https://github.com/withastro/astro/commit/12b00225067445629e5ae451d763d03f70065f88) Thanks [@bluwy](https://github.com/bluwy)! - Reverts https://github.com/withastro/astro/pull/12173 which caused `Can't modify immutable headers` warnings and 500 errors on Cloudflare Pages
+
+## 4.16.1
+
+### Patch Changes
+
+- [#12177](https://github.com/withastro/astro/pull/12177) [`a4ffbfa`](https://github.com/withastro/astro/commit/a4ffbfaa5cb460c12bd486fd75e36147f51d3e5e) Thanks [@matthewp](https://github.com/matthewp)! - Ensure we target scripts for execution in the router
+
+  Using `document.scripts` is unsafe because if the application has a `name="scripts"` this will shadow the built-in `document.scripts`. Fix is to use `getElementsByTagName` to ensure we're only grabbing real scripts.
+
+- [#12173](https://github.com/withastro/astro/pull/12173) [`2d10de5`](https://github.com/withastro/astro/commit/2d10de5f212323e6e19c7ea379826dcc18fe739c) Thanks [@ematipico](https://github.com/ematipico)! - Fixes a bug where Astro Actions couldn't redirect to the correct pathname when there was a rewrite involved.
+
+## 4.16.0
+
+### Minor Changes
+
+- [#12039](https://github.com/withastro/astro/pull/12039) [`710a1a1`](https://github.com/withastro/astro/commit/710a1a11f488ff6ed3da6d3e0723b2322ccfe27b) Thanks [@ematipico](https://github.com/ematipico)! - Adds a `markdown.shikiConfig.langAlias` option that allows [aliasing a non-supported code language to a known language](https://shiki.style/guide/load-lang#custom-language-aliases). This is useful when the language of your code samples is not [a built-in Shiki language](https://shiki.style/languages), but you want your Markdown source to contain an accurate language while also displaying syntax highlighting.
+
+  The following example configures Shiki to highlight `cjs` code blocks using the `javascript` syntax highlighter:
+
+  ```js
+  import { defineConfig } from 'astro/config';
+
+  export default defineConfig({
+    markdown: {
+      shikiConfig: {
+        langAlias: {
+          cjs: 'javascript',
+        },
+      },
+    },
+  });
+  ```
+
+  Then in your Markdown, you can use the alias as the language for a code block for syntax highlighting:
+
+  ````md
+  ```cjs
+  'use strict';
+
+  function commonJs() {
+    return 'I am a commonjs file';
+  }
+  ```
+  ````
+
+- [#11984](https://github.com/withastro/astro/pull/11984) [`3ac2263`](https://github.com/withastro/astro/commit/3ac2263ff6070136bec9cffb863c38bcc31ccdfe) Thanks [@chaegumi](https://github.com/chaegumi)! - Adds a new `build.concurreny` configuration option to specify the number of pages to build in parallel
+
+  **In most cases, you should not change the default value of `1`.**
+
+  Use this option only when other attempts to reduce the overall rendering time (e.g. batch or cache long running tasks like fetch calls or data access) are not possible or are insufficient.
+
+  Use this option only if the refactors are not possible. If the number is set too high, the page rendering may slow down due to insufficient memory resources and because JS is single-threaded.
+
+  > [!WARNING]
+  > This feature is stable and is not considered experimental. However, this feature is only intended to address difficult performance issues, and breaking changes may occur in a [minor release](https://docs.astro.build/en/upgrade-astro/#semantic-versioning) to keep this option as performant as possible.
+
+  ```js
+  // astro.config.mjs
+  import { defineConfig } from 'astro';
+
+  export default defineConfig({
+    build: {
+      concurrency: 2,
+    },
+  });
+  ```
+
+### Patch Changes
+
+- [#12160](https://github.com/withastro/astro/pull/12160) [`c6fd1df`](https://github.com/withastro/astro/commit/c6fd1df695d0f2a24bb49e6954064f92664ccf67) Thanks [@louisescher](https://github.com/louisescher)! - Fixes a bug where `astro.config.mts` and `astro.config.cts` weren't reloading the dev server upon modifications.
+
+- [#12130](https://github.com/withastro/astro/pull/12130) [`e96bcae`](https://github.com/withastro/astro/commit/e96bcae535ef2f0661f539c1d49690c531df2d4e) Thanks [@thehansys](https://github.com/thehansys)! - Fixes a bug in the parsing of `x-forwarded-\*` `Request` headers, where multiple values assigned to those headers were not correctly parsed.
+
+  Now, headers like `x-forwarded-proto: https,http` are correctly parsed.
+
+- [#12147](https://github.com/withastro/astro/pull/12147) [`9db755a`](https://github.com/withastro/astro/commit/9db755ab7cfe658ec426387e297bdcd32c4bc8de) Thanks [@ascorbic](https://github.com/ascorbic)! - Skips setting statusMessage header for HTTP/2 response
+
+  HTTP/2 doesn't support status message, so setting this was logging a warning.
+
+- [#12151](https://github.com/withastro/astro/pull/12151) [`bb6d37f`](https://github.com/withastro/astro/commit/bb6d37f94a283433994f9243189cb4386df0e11a) Thanks [@ematipico](https://github.com/ematipico)! - Fixes an issue where `Astro.currentLocale` wasn't incorrectly computed when the `defaultLocale` belonged to a custom locale path.
+
+- Updated dependencies [[`710a1a1`](https://github.com/withastro/astro/commit/710a1a11f488ff6ed3da6d3e0723b2322ccfe27b)]:
+  - @astrojs/markdown-remark@5.3.0
+
+## 4.15.12
+
+### Patch Changes
+
+- [#12121](https://github.com/withastro/astro/pull/12121) [`2490ceb`](https://github.com/withastro/astro/commit/2490cebdb93f13ee552cffa72b2e274d64e6b4a7) Thanks [@ascorbic](https://github.com/ascorbic)! - Support passing the values `Infinity` and `-Infinity` as island props.
+
+- [#12118](https://github.com/withastro/astro/pull/12118) [`f47b347`](https://github.com/withastro/astro/commit/f47b347da899c6e1dcd0b2e7887f7fce6ec8e270) Thanks [@Namchee](https://github.com/Namchee)! - Removes the `strip-ansi` dependency in favor of the native Node API
+
+- [#12126](https://github.com/withastro/astro/pull/12126) [`6e1dfeb`](https://github.com/withastro/astro/commit/6e1dfeb76bec09d24928bab798c6ad3280f42e84) Thanks [@ascorbic](https://github.com/ascorbic)! - Clear content layer cache when astro version changes
+
+- [#12117](https://github.com/withastro/astro/pull/12117) [`a46839a`](https://github.com/withastro/astro/commit/a46839a5c818b7de63c36d0c7e27f1a8f3b773dc) Thanks [@ArmandPhilippot](https://github.com/ArmandPhilippot)! - Updates Vite links to use their new domain
+
+- [#12124](https://github.com/withastro/astro/pull/12124) [`499fbc9`](https://github.com/withastro/astro/commit/499fbc91a6bdad8c86ff13a8caf1fa09433796b9) Thanks [@ascorbic](https://github.com/ascorbic)! - Allows special characters in Action names
+
+- [#12123](https://github.com/withastro/astro/pull/12123) [`b8673df`](https://github.com/withastro/astro/commit/b8673df51c6cc4ce6a288f8eb609b7a438a07d82) Thanks [@Princesseuh](https://github.com/Princesseuh)! - Fixes missing `body` property on CollectionEntry types for content layer entries
+
+- [#12132](https://github.com/withastro/astro/pull/12132) [`de35daa`](https://github.com/withastro/astro/commit/de35daa8517555c1b9c72bc7fe9cc955c4997a83) Thanks [@jcayzac](https://github.com/jcayzac)! - Updates the [`cookie`](https://npmjs.com/package/cookie) dependency to avoid the [CVE 2024-47764](https://nvd.nist.gov/vuln/detail/CVE-2024-47764) vulnerability.
+
+- [#12113](https://github.com/withastro/astro/pull/12113) [`a54e520`](https://github.com/withastro/astro/commit/a54e520d3c139fa123e7029c5933951b5c7f5a39) Thanks [@ascorbic](https://github.com/ascorbic)! - Adds a helpful error when attempting to render an undefined collection entry
+
+## 4.15.11
+
+### Patch Changes
+
+- [#12097](https://github.com/withastro/astro/pull/12097) [`11d447f`](https://github.com/withastro/astro/commit/11d447f66b1a0f39489c2600139ebfb565336ce7) Thanks [@ascorbic](https://github.com/ascorbic)! - Fixes error where references in content layer schemas sometimes incorrectly report as missing
+
+- [#12108](https://github.com/withastro/astro/pull/12108) [`918953b`](https://github.com/withastro/astro/commit/918953bd09f057131dfe029e810019c0909345cf) Thanks [@lameuler](https://github.com/lameuler)! - Fixes a bug where [data URL images](https://developer.mozilla.org/en-US/docs/Web/URI/Schemes/data) were not correctly handled. The bug resulted in an `ENAMETOOLONG` error.
+
+- [#12105](https://github.com/withastro/astro/pull/12105) [`42037f3`](https://github.com/withastro/astro/commit/42037f33e644d5a2bfba71377697fc7336ecb15b) Thanks [@ascorbic](https://github.com/ascorbic)! - Returns custom statusText that has been set in a Response
+
+- [#12109](https://github.com/withastro/astro/pull/12109) [`ea22558`](https://github.com/withastro/astro/commit/ea225585fd12d27006434266163512ca66ad572b) Thanks [@ematipico](https://github.com/ematipico)! - Fixes a regression that was introduced by an internal refactor of how the middleware is loaded by the Astro application. The regression was introduced by [#11550](https://github.com/withastro/astro/pull/11550).
+
+  When the edge middleware feature is opted in, Astro removes the middleware function from the SSR manifest, and this wasn't taken into account during the refactor.
+
+- [#12106](https://github.com/withastro/astro/pull/12106) [`d3a74da`](https://github.com/withastro/astro/commit/d3a74da19644477ffc81acf2a3efb26ad3335a5e) Thanks [@ascorbic](https://github.com/ascorbic)! - Handles case where an immutable Response object is returned from an endpoint
+
+- [#12090](https://github.com/withastro/astro/pull/12090) [`d49a537`](https://github.com/withastro/astro/commit/d49a537f2aaccd132154a15f1da4db471272ee90) Thanks [@markjaquith](https://github.com/markjaquith)! - Server islands: changes the server island HTML placeholder comment so that it is much less likely to get removed by HTML minifiers.
+
+## 4.15.10
+
+### Patch Changes
+
+- [#12084](https://github.com/withastro/astro/pull/12084) [`12dae50`](https://github.com/withastro/astro/commit/12dae50c776474748a80cb65c8bf1c67f0825cb0) Thanks [@Princesseuh](https://github.com/Princesseuh)! - Adds missing filePath property on content layer entries
+
+- [#12046](https://github.com/withastro/astro/pull/12046) [`d7779df`](https://github.com/withastro/astro/commit/d7779dfae7bc00ff94b1e4596ff5b4897f65aabe) Thanks [@martrapp](https://github.com/martrapp)! - View transitions: Fixes Astro's fade animation to prevent flashing during morph transitions.
+
+- [#12043](https://github.com/withastro/astro/pull/12043) [`1720c5b`](https://github.com/withastro/astro/commit/1720c5b1d2bfd106ad065833823aed622bee09bc) Thanks [@bluwy](https://github.com/bluwy)! - Fixes injected endpoint `prerender` option detection
+
+- [#12095](https://github.com/withastro/astro/pull/12095) [`76c5fbd`](https://github.com/withastro/astro/commit/76c5fbd6f3a8d41367f1d7033278d133d518213b) Thanks [@TheOtterlord](https://github.com/TheOtterlord)! - Fix installing non-stable versions of integrations with `astro add`
+
+## 4.15.9
+
+### Patch Changes
+
+- [#12034](https://github.com/withastro/astro/pull/12034) [`5b3ddfa`](https://github.com/withastro/astro/commit/5b3ddfadcb2d09b6cbd9cd42641f30ca565d0f58) Thanks [@ematipico](https://github.com/ematipico)! - Fixes an issue where the middleware wasn't called when a project uses `404.astro`.
+
+- [#12042](https://github.com/withastro/astro/pull/12042) [`243ecb6`](https://github.com/withastro/astro/commit/243ecb6d6146dc483b4726d0e76142fb25e56243) Thanks [@ematipico](https://github.com/ematipico)! - Fixes a problem in the Container API, where a polyfill wasn't correctly applied. This caused an issue in some environments where `crypto` isn't supported.
+
+- [#12038](https://github.com/withastro/astro/pull/12038) [`26ea5e8`](https://github.com/withastro/astro/commit/26ea5e814ab8c973e683fff62389fda28c180940) Thanks [@ascorbic](https://github.com/ascorbic)! - Resolves image paths in content layer with initial slash as project-relative
+
+  When using the `image()` schema helper, previously paths with an initial slash were treated as public URLs. This was to match the behavior of markdown images. However this is a change from before, where paths with an initial slash were treated as project-relative. This change restores the previous behavior, so that paths with an initial slash are treated as project-relative.
+
+## 4.15.8
+
+### Patch Changes
+
+- [#12014](https://github.com/withastro/astro/pull/12014) [`53cb41e`](https://github.com/withastro/astro/commit/53cb41e30ea5768bf33d9f6be608fb57d31b7b9e) Thanks [@ascorbic](https://github.com/ascorbic)! - Fixes an issue where component styles were not correctly included in rendered MDX
+
+- [#12031](https://github.com/withastro/astro/pull/12031) [`8c0cae6`](https://github.com/withastro/astro/commit/8c0cae6d1bd70b332286d83d0f01cfce5272fbbe) Thanks [@ematipico](https://github.com/ematipico)! - Fixes a bug where the rewrite via `next(/*..*/)` inside a middleware didn't compute the new `APIContext.params`
+
+- [#12026](https://github.com/withastro/astro/pull/12026) [`40e7a1b`](https://github.com/withastro/astro/commit/40e7a1b05d9e5ea3fcda176c9663bbcff86edb63) Thanks [@bluwy](https://github.com/bluwy)! - Initializes the Markdown processor only when there's `.md` files
+
+- [#12028](https://github.com/withastro/astro/pull/12028) [`d3bd673`](https://github.com/withastro/astro/commit/d3bd673392e63720e241d6a002a131a3564c169c) Thanks [@bluwy](https://github.com/bluwy)! - Handles route collision detection only if it matches `getStaticPaths`
+
+- [#12027](https://github.com/withastro/astro/pull/12027) [`dd3b753`](https://github.com/withastro/astro/commit/dd3b753aba6400558671d85214e27b8e4fb1654b) Thanks [@fviolette](https://github.com/fviolette)! - Add `selected` to the list of boolean attributes
+
+- [#12001](https://github.com/withastro/astro/pull/12001) [`9be3e1b`](https://github.com/withastro/astro/commit/9be3e1bba789af96d8b21d9c8eca8542cfb4ff77) Thanks [@uwej711](https://github.com/uwej711)! - Remove dependency on path-to-regexp
+
+## 4.15.7
+
+### Patch Changes
+
+- [#12000](https://github.com/withastro/astro/pull/12000) [`a2f8c5d`](https://github.com/withastro/astro/commit/a2f8c5d85ff15803f5cedf9148cd70ffc138ddef) Thanks [@ArmandPhilippot](https://github.com/ArmandPhilippot)! - Fixes an outdated link used to document Content Layer API
+
+- [#11915](https://github.com/withastro/astro/pull/11915) [`0b59fe7`](https://github.com/withastro/astro/commit/0b59fe74d5922c572007572ddca8d11482e2fb5c) Thanks [@azhirov](https://github.com/azhirov)! - Fix: prevent island from re-rendering when using transition:persist (#11854)
+
+## 4.15.6
+
+### Patch Changes
+
+- [#11993](https://github.com/withastro/astro/pull/11993) [`ffba5d7`](https://github.com/withastro/astro/commit/ffba5d716edcdfc42899afaa4188b7a4cd0c91eb) Thanks [@matthewp](https://github.com/matthewp)! - Fix getStaticPaths regression
+
+  This reverts a previous change meant to remove a dependency, to fix a regression with multiple nested spread routes.
+
+- [#11964](https://github.com/withastro/astro/pull/11964) [`06eff60`](https://github.com/withastro/astro/commit/06eff60cabb55d91fe4075421b1693b1ab33225c) Thanks [@TheOtterlord](https://github.com/TheOtterlord)! - Add wayland (wl-copy) support to `astro info`
+
+## 4.15.5
+
+### Patch Changes
+
+- [#11939](https://github.com/withastro/astro/pull/11939) [`7b09c62`](https://github.com/withastro/astro/commit/7b09c62b565cd7b50c35fb68d390729f936a43fb) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Adds support for Zod discriminated unions on Action form inputs. This allows forms with different inputs to be submitted to the same action, using a given input to decide which object should be used for validation.
+
+  This example accepts either a `create` or `update` form submission, and uses the `type` field to determine which object to validate against.
+
+  ```ts
+  import { defineAction } from 'astro:actions';
+  import { z } from 'astro:schema';
+
+  export const server = {
+    changeUser: defineAction({
+      accept: 'form',
+      input: z.discriminatedUnion('type', [
+        z.object({
+          type: z.literal('create'),
+          name: z.string(),
+          email: z.string().email(),
+        }),
+        z.object({
+          type: z.literal('update'),
+          id: z.number(),
+          name: z.string(),
+          email: z.string().email(),
+        }),
+      ]),
+      async handler(input) {
+        if (input.type === 'create') {
+          // input is { type: 'create', name: string, email: string }
+        } else {
+          // input is { type: 'update', id: number, name: string, email: string }
+        }
+      },
+    }),
+  };
+  ```
+
+  The corresponding `create` and `update` forms may look like this:
+
+  ```astro
+  ---
+  import { actions } from 'astro:actions';
+  ---
+
+  <!--Create-->
+  <form action={actions.changeUser} method="POST">
+    <input type="hidden" name="type" value="create" />
+    <input type="text" name="name" required />
+    <input type="email" name="email" required />
+    <button type="submit">Create User</button>
+  </form>
+
+  <!--Update-->
+  <form action={actions.changeUser} method="POST">
+    <input type="hidden" name="type" value="update" />
+    <input type="hidden" name="id" value="user-123" />
+    <input type="text" name="name" required />
+    <input type="email" name="email" required />
+    <button type="submit">Update User</button>
+  </form>
+  ```
+
+- [#11968](https://github.com/withastro/astro/pull/11968) [`86ad1fd`](https://github.com/withastro/astro/commit/86ad1fd223e2d2c448372caa159090efbee69237) Thanks [@NikolaRHristov](https://github.com/NikolaRHristov)! - Fixes a typo in the server island JSDoc
+
+- [#11983](https://github.com/withastro/astro/pull/11983) [`633eeaa`](https://github.com/withastro/astro/commit/633eeaa9d8a8a35bba638fde06fd8f52cc1c2ce3) Thanks [@uwej711](https://github.com/uwej711)! - Remove dependency on path-to-regexp
+
+## 4.15.4
+
+### Patch Changes
+
+- [#11879](https://github.com/withastro/astro/pull/11879) [`bd1d4aa`](https://github.com/withastro/astro/commit/bd1d4aaf8262187b4f132d7fe0365902131ddf1a) Thanks [@matthewp](https://github.com/matthewp)! - Allow passing a cryptography key via ASTRO_KEY
+
+  For Server islands Astro creates a cryptography key in order to hash props for the islands, preventing accidental leakage of secrets.
+
+  If you deploy to an environment with rolling updates then there could be multiple instances of your app with different keys, causing potential key mismatches.
+
+  To fix this you can now pass the `ASTRO_KEY` environment variable to your build in order to reuse the same key.
+
+  To generate a key use:
+
+  ```
+  astro create-key
+  ```
+
+  This will print out an environment variable to set like:
+
+  ```
+  ASTRO_KEY=PIAuyPNn2aKU/bviapEuc/nVzdzZPizKNo3OqF/5PmQ=
+  ```
+
+- [#11935](https://github.com/withastro/astro/pull/11935) [`c58193a`](https://github.com/withastro/astro/commit/c58193a691775af5c568e461c63040a42e2471f7) Thanks [@Princesseuh](https://github.com/Princesseuh)! - Fixes `astro add` not using the proper export point when adding certain adapters
+
+## 4.15.3
+
+### Patch Changes
+
+- [#11902](https://github.com/withastro/astro/pull/11902) [`d63bc50`](https://github.com/withastro/astro/commit/d63bc50d9940c1107e0fee7687e5c332549a0eff) Thanks [@ascorbic](https://github.com/ascorbic)! - Fixes case where content layer did not update during clean dev builds on Linux and Windows
+
+- [#11886](https://github.com/withastro/astro/pull/11886) [`7ff7134`](https://github.com/withastro/astro/commit/7ff7134b8038a3b798293b2218bbf6dd02d2ac32) Thanks [@matthewp](https://github.com/matthewp)! - Fixes a missing error message when actions throws during `astro sync`
+
+- [#11904](https://github.com/withastro/astro/pull/11904) [`ca54e3f`](https://github.com/withastro/astro/commit/ca54e3f819fad009ac3c3c8b57a26014a2652a73) Thanks [@wtchnm](https://github.com/wtchnm)! - perf(assets): avoid downloading original image when using cache
+
 ## 4.15.2
 
 ### Patch Changes
@@ -1390,114 +1612,6 @@
 
 - [#11828](https://github.com/withastro/astro/pull/11828) [`20d47aa`](https://github.com/withastro/astro/commit/20d47aa85a3a0d7ac3390f749715d92de830cf3e) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Improves error message when invalid data is returned by an Action.
 
-## 5.0.0-alpha.1
-
-### Major Changes
-
-- [#11798](https://github.com/withastro/astro/pull/11798) [`e9e2139`](https://github.com/withastro/astro/commit/e9e2139bf788893566f5a3fe58daf1d24076f018) Thanks [@matthewp](https://github.com/matthewp)! - Unflag globalRoutePriority
-
-  The previously [experimental feature `globalRoutePriority`](https://docs.astro.build/en/reference/configuration-reference/#experimentalglobalroutepriority) is now the default in Astro 5.
-
-  This was a refactoring of route prioritization in Astro, making it so that injected routes, file-based routes, and redirects are all prioritized using the same logic. This feature has been enabled for all Starlight projects since it was added and should not affect most users.
-
-- [#11679](https://github.com/withastro/astro/pull/11679) [`ea71b90`](https://github.com/withastro/astro/commit/ea71b90c9c08ddd1d3397c78e2e273fb799f7dbd) Thanks [@florian-lefebvre](https://github.com/florian-lefebvre)! - The [`astro:env` feature introduced behind a flag](https://docs.astro.build/en/reference/configuration-reference/#experimentalglobalroutepriority) in [v4.10.0](https://github.com/withastro/astro/blob/main/packages/astro/CHANGELOG.md#x4100) is no longer experimental and is available for general use. If you have been waiting for stabilization before using `astro:env`, you can now do so.
-
-  This feature lets you configure a type-safe schema for your environment variables, and indicate whether they should be available on the server or the client.
-
-  To configure a schema, add the `env` option to your Astro config and define your client and server variables. If you were previously using this feature, please remove the experimental flag from your Astro config and move your entire `env` configuration unchanged to a top-level option.
-
-  ```js
-  import { defineConfig, envField } from 'astro/config';
-
-  export default defineConfig({
-    env: {
-      schema: {
-        API_URL: envField.string({ context: 'client', access: 'public', optional: true }),
-        PORT: envField.number({ context: 'server', access: 'public', default: 4321 }),
-        API_SECRET: envField.string({ context: 'server', access: 'secret' }),
-      },
-    },
-  });
-  ```
-
-  You can import and use your defined variables from the appropriate `/client` or `/server` module:
-
-  ```astro
-  ---
-  import { API_URL } from 'astro:env/client';
-  import { API_SECRET_TOKEN } from 'astro:env/server';
-
-  const data = await fetch(`${API_URL}/users`, {
-    method: 'GET',
-    headers: {
-      'Content-Type': 'application/json',
-      Authorization: `Bearer ${API_SECRET_TOKEN}`,
-    },
-  });
-  ---
-
-  <script>
-    import { API_URL } from 'astro:env/client';
-
-    fetch(`${API_URL}/ping`);
-  </script>
-  ```
-
-- [#11788](https://github.com/withastro/astro/pull/11788) [`7c0ccfc`](https://github.com/withastro/astro/commit/7c0ccfc26947b178584e3476584bcaa490c6ba86) Thanks [@ematipico](https://github.com/ematipico)! - Updates the default value of `security.checkOrigin` to `true`, which enables Cross-Site Request Forgery (CSRF) protection by default for pages rendered on demand.
-
-  If you had previously configured `security.checkOrigin: true`, you no longer need this set in your Astro config. This is now the default and it is safe to remove.
-
-  To disable this behavior and opt out of automatically checking that the “origin” header matches the URL sent by each request, you must explicitly set `security.checkOrigin: false`:
-
-  ```diff
-  export default defineConfig({
-  +  security: {
-  +    checkOrigin: false
-  +  }
-  })
-  ```
-
-- [#11741](https://github.com/withastro/astro/pull/11741) [`6617491`](https://github.com/withastro/astro/commit/6617491c3bc2bde87f7867d7dec2580781852cfc) Thanks [@bluwy](https://github.com/bluwy)! - Removes internal JSX handling and moves the responsibility to the `@astrojs/mdx` package directly. The following exports are also now removed:
-
-  - `astro/jsx/babel.js`
-  - `astro/jsx/component.js`
-  - `astro/jsx/index.js`
-  - `astro/jsx/renderer.js`
-  - `astro/jsx/server.js`
-  - `astro/jsx/transform-options.js`
-
-  If your project includes `.mdx` files, you must upgrade `@astrojs/mdx` to the latest version so that it doesn't rely on these entrypoints to handle your JSX.
-
-- [#11782](https://github.com/withastro/astro/pull/11782) [`9a2aaa0`](https://github.com/withastro/astro/commit/9a2aaa01ea427df3844bce8595207809a8d2cb94) Thanks [@Princesseuh](https://github.com/Princesseuh)! - Makes the `compiledContent` property of Markdown content an async function, this change should fix underlying issues where sometimes when using a custom image service and images inside Markdown, Node would exit suddenly without any error message.
-
-  ```diff
-  ---
-  import * as myPost from "../post.md";
-
-  - const content = myPost.compiledContent();
-  + const content = await myPost.compiledContent();
-  ---
-
-  <Fragment set:html={content} />
-  ```
-
-- [#11770](https://github.com/withastro/astro/pull/11770) [`cfa6a47`](https://github.com/withastro/astro/commit/cfa6a47ac7a541f99fdad46a68d0cca6e5816cd5) Thanks [@Princesseuh](https://github.com/Princesseuh)! - Removed support for the Squoosh image service. As the underlying library `libsquoosh` is no longer maintained, and the image service sees very little usage we have decided to remove it from Astro.
-
-  Our recommendation is to use the base Sharp image service, which is more powerful, faster, and more actively maintained.
-
-  ```diff
-  - import { squooshImageService } from "astro/config";
-  import { defineConfig } from "astro/config";
-
-  export default defineConfig({
-  -  image: {
-  -    service: squooshImageService()
-  -  }
-  });
-  ```
-
-  If you are using this service, and cannot migrate to the base Sharp image service, a third-party extraction of the previous service is available here: https://github.com/Princesseuh/astro-image-service-squoosh
-
 ## 4.14.5
 
 ### Patch Changes
@@ -1522,20 +1636,6 @@
 
 - [#11780](https://github.com/withastro/astro/pull/11780) [`c6622ad`](https://github.com/withastro/astro/commit/c6622adaeb405e961b12c91f0e5d02c7333d01cf) Thanks [@Princesseuh](https://github.com/Princesseuh)! - Deprecates the Squoosh image service, to be removed in Astro 5.0. We recommend migrating to the default Sharp service.
 
-- [#11732](https://github.com/withastro/astro/pull/11732) [`4cd6c43`](https://github.com/withastro/astro/commit/4cd6c43e221e40345dfb433f9c63395f886091fd) Thanks [@matthewp](https://github.com/matthewp)! - Use GET requests with preloading for Server Islands
-
-  Server Island requests include the props used to render the island as well as any slots passed in (excluding the fallback slot). Since browsers have a max 4mb URL length we default to using a POST request to avoid overflowing this length.
-
-  However in reality most usage of Server Islands are fairly isolated and won't exceed this limit, so a GET request is possible by passing this same information via search parameters.
-
-  Using GET means we can also include a `<link rel="preload">` tag to speed up the request.
-
-  This change implements this, with safe fallback to POST.
-
-- [#11773](https://github.com/withastro/astro/pull/11773) [`86a3391`](https://github.com/withastro/astro/commit/86a33915ff41b23ff6b35bcfb1805fefc0760ca7) Thanks [@ematipico](https://github.com/ematipico)! - Changes messages logged when using unsupported, deprecated, or experimental adapter features for clarity
-
-- [#11774](https://github.com/withastro/astro/pull/11774) [`c6400ab`](https://github.com/withastro/astro/commit/c6400ab99c5e5f4477bc6ef7e801b7869b0aa9ab) Thanks [@florian-lefebvre](https://github.com/florian-lefebvre)! - Fixes the path returned by `injectTypes`
-
 - [#11790](https://github.com/withastro/astro/pull/11790) [`41c3fcb`](https://github.com/withastro/astro/commit/41c3fcb6189709450a67ea8f726071d5f3cdc80e) Thanks [@sarah11918](https://github.com/sarah11918)! - Updates the documentation for experimental `astro:env` with a corrected link to the RFC proposal
 
 - [#11773](https://github.com/withastro/astro/pull/11773) [`86a3391`](https://github.com/withastro/astro/commit/86a33915ff41b23ff6b35bcfb1805fefc0760ca7) Thanks [@ematipico](https://github.com/ematipico)! - Changes messages logged when using unsupported, deprecated, or experimental adapter features for clarity
@@ -1550,81 +1650,6 @@
 
 - [#11744](https://github.com/withastro/astro/pull/11744) [`b677429`](https://github.com/withastro/astro/commit/b67742961a384c10e5cd04cf5b02d0f014ea7362) Thanks [@bluwy](https://github.com/bluwy)! - Disables the WebSocket server when creating a Vite server for loading config files
 
-## 5.0.0-alpha.0
-
-### Major Changes
-
-- [#10742](https://github.com/withastro/astro/pull/10742) [`b6fbdaa`](https://github.com/withastro/astro/commit/b6fbdaa94a9ecec706a99e1938fbf5cd028c72e0) Thanks [@ematipico](https://github.com/ematipico)! - The lowest version of Node supported by Astro is now Node v18.17.1 and higher.
-
-- [#11715](https://github.com/withastro/astro/pull/11715) [`d74617c`](https://github.com/withastro/astro/commit/d74617cbd3278feba05909ec83db2d73d57a153e) Thanks [@Princesseuh](https://github.com/Princesseuh)! - Refactor the exported types from the `astro` module. There should normally be no breaking changes, but if you relied on some previously deprecated types, these might now have been fully removed.
-
-  In most cases, updating your code to move away from previously deprecated APIs in previous versions of Astro should be enough to fix any issues.
-
-- [#11660](https://github.com/withastro/astro/pull/11660) [`e90f559`](https://github.com/withastro/astro/commit/e90f5593d23043579611452a84b9e18ad2407ef9) Thanks [@bluwy](https://github.com/bluwy)! - Fixes attribute rendering for non-[boolean HTML attributes](https://developer.mozilla.org/en-US/docs/Glossary/Boolean/HTML) with boolean values to match proper attribute handling in browsers.
-
-  Previously, non-boolean attributes may not have included their values when rendered to HTML. In Astro v5.0, the values are now explicitly rendered as `="true"` or `="false"`
-
-  In the following `.astro` examples, only `allowfullscreen` is a boolean attribute:
-
-  ```astro
-  <!-- src/pages/index.astro --><!-- `allowfullscreen` is a boolean attribute -->
-  <p allowfullscreen={true}></p>
-  <p allowfullscreen={false}></p>
-
-  <!-- `inherit` is *not* a boolean attribute -->
-  <p inherit={true}></p>
-  <p inherit={false}></p>
-
-  <!-- `data-*` attributes are not boolean attributes -->
-  <p data-light={true}></p>
-  <p data-light={false}></p>
-  ```
-
-  Astro v5.0 now preserves the full data attribute with its value when rendering the HTML of non-boolean attributes:
-
-  ```diff
-    <p allowfullscreen></p>
-    <p></p>
-
-    <p inherit="true"></p>
-  - <p inherit></p>
-  + <p inherit="false"></p>
-
-  - <p data-light></p>
-  + <p data-light="true"></p>
-  - <p></p>
-  + <p data-light="false"></p>
-  ```
-
-  If you rely on attribute values, for example to locate elements or to conditionally render, update your code to match the new non-boolean attribute values:
-
-  ```diff
-  - el.getAttribute('inherit') === ''
-  + el.getAttribute('inherit') === 'false'
-
-  - el.hasAttribute('data-light')
-  + el.dataset.light === 'true'
-  ```
-
-- [#11714](https://github.com/withastro/astro/pull/11714) [`8a53517`](https://github.com/withastro/astro/commit/8a5351737d6a14fc55f1dafad8f3b04079e81af6) Thanks [@matthewp](https://github.com/matthewp)! - Remove support for functionPerRoute
-
-  This change removes support for the `functionPerRoute` option both in Astro and `@astrojs/vercel`.
-
-  This option made it so that each route got built as separate entrypoints so that they could be loaded as separate functions. The hope was that by doing this it would decrease the size of each function. However in practice routes use most of the same code, and increases in function size limitations made the potential upsides less important.
-
-  Additionally there are downsides to functionPerRoute, such as hitting limits on the number of functions per project. The feature also never worked with some Astro features like i18n domains and request rewriting.
-
-  Given this, the feature has been removed from Astro.
-
-### Patch Changes
-
-- [#11745](https://github.com/withastro/astro/pull/11745) [`89bab1e`](https://github.com/withastro/astro/commit/89bab1e70786123fbe933a9d7a1b80c9334dcc5f) Thanks [@bluwy](https://github.com/bluwy)! - Prints prerender dynamic value usage warning only if it's used
-
-- [#11730](https://github.com/withastro/astro/pull/11730) [`2df49a6`](https://github.com/withastro/astro/commit/2df49a6fb4f6d92fe45f7429430abe63defeacd6) Thanks [@florian-lefebvre](https://github.com/florian-lefebvre)! - Simplifies path operations of `astro sync`
-
-- Updated dependencies [[`83a2a64`](https://github.com/withastro/astro/commit/83a2a648418ad30f4eb781d1c1b5f2d8a8ac846e)]:
-  - @astrojs/markdown-remark@6.0.0-alpha.0
-
 ## 4.14.2
 
 ### Patch Changes
diff --git a/packages/astro/src/assets/internal.ts b/packages/astro/src/assets/internal.ts
index a984ff0254..64e0d6553a 100644
--- a/packages/astro/src/assets/internal.ts
+++ b/packages/astro/src/assets/internal.ts
@@ -11,6 +11,7 @@ import {
 } from './types.js';
 import { isESMImportedImage, isRemoteImage, resolveSrc } from './utils/imageKind.js';
 import { inferRemoteSize } from './utils/remoteProbe.js';
+import {isRemotePath} from "@astrojs/internal-helpers/path";
 
 export async function getConfiguredImageService(): Promise<ImageService> {
 	if (!globalThis?.astroAsset?.imageService) {
@@ -65,7 +66,11 @@ export async function getImage(
 	};
 
 	// Infer size for remote images if inferSize is true
-	if (options.inferSize && isRemoteImage(resolvedOptions.src)) {
+	if (
+		options.inferSize &&
+		isRemoteImage(resolvedOptions.src) &&
+		isRemotePath(resolvedOptions.src)
+	) {
 		const result = await inferRemoteSize(resolvedOptions.src); // Directly probe the image URL
 		resolvedOptions.width ??= result.width;
 		resolvedOptions.height ??= result.height;
diff --git a/packages/astro/src/container/index.ts b/packages/astro/src/container/index.ts
index 43b1c119b6..7694f3afa2 100644
--- a/packages/astro/src/container/index.ts
+++ b/packages/astro/src/container/index.ts
@@ -97,6 +97,14 @@ export type ContainerRenderOptions = {
 	 * ```
 	 */
 	props?: Props;
+
+	/**
+	 * When `false`, it forces to render the component as it was a full-fledged page.
+	 *
+	 * By default, the container API render components as [partials](https://docs.astro.build/en/basics/astro-pages/#page-partials).
+	 *
+	 */
+	partial?: boolean;
 };
 
 export type AddServerRenderer =
@@ -499,6 +507,7 @@ export class experimental_AstroContainer {
 			request,
 			pathname: url.pathname,
 			locals: options?.locals ?? {},
+			partial: options?.partial ?? true,
 		});
 		if (options.params) {
 			renderContext.params = options.params;
diff --git a/packages/astro/src/core/render-context.ts b/packages/astro/src/core/render-context.ts
index d5211d3d79..387028c482 100644
--- a/packages/astro/src/core/render-context.ts
+++ b/packages/astro/src/core/render-context.ts
@@ -48,6 +48,7 @@ export class RenderContext {
 		public params = getParams(routeData, pathname),
 		protected url = new URL(request.url),
 		public props: Props = {},
+		public partial: undefined | boolean = undefined,
 	) {}
 
 	/**
@@ -68,9 +69,10 @@ export class RenderContext {
 		routeData,
 		status = 200,
 		props,
+		partial = undefined,
 	}: Pick<RenderContext, 'pathname' | 'pipeline' | 'request' | 'routeData'> &
 		Partial<
-			Pick<RenderContext, 'locals' | 'middleware' | 'status' | 'props'>
+			Pick<RenderContext, 'locals' | 'middleware' | 'status' | 'props' | 'partial'>
 		>): Promise<RenderContext> {
 		const pipelineMiddleware = await pipeline.getMiddleware();
 		return new RenderContext(
@@ -85,6 +87,7 @@ export class RenderContext {
 			undefined,
 			undefined,
 			props,
+			partial,
 		);
 	}
 
@@ -304,7 +307,7 @@ export class RenderContext {
 		const componentMetadata =
 			(await pipeline.componentMetadata(routeData)) ?? manifest.componentMetadata;
 		const headers = new Headers({ 'Content-Type': 'text/html' });
-		const partial = Boolean(mod.partial);
+		const partial = typeof this.partial === 'boolean' ? this.partial : Boolean(mod.partial);
 		const response = {
 			status,
 			statusText: 'OK',
diff --git a/packages/astro/src/env/runtime-constants.ts b/packages/astro/src/env/runtime-constants.ts
new file mode 100644
index 0000000000..27b5d72113
--- /dev/null
+++ b/packages/astro/src/env/runtime-constants.ts
@@ -0,0 +1 @@
+export const ENV_SYMBOL = Symbol.for('astro:env/dev');
diff --git a/packages/astro/src/env/runtime.ts b/packages/astro/src/env/runtime.ts
index a2017b617f..50684f63ef 100644
--- a/packages/astro/src/env/runtime.ts
+++ b/packages/astro/src/env/runtime.ts
@@ -1,12 +1,16 @@
 import { AstroError, AstroErrorData } from '../core/errors/index.js';
 import { invalidVariablesToError } from './errors.js';
+import { ENV_SYMBOL } from './runtime-constants.js';
 import type { ValidationResultInvalid } from './validators.js';
 export { validateEnvVariable, getEnvFieldType } from './validators.js';
 
 export type GetEnv = (key: string) => string | undefined;
 type OnSetGetEnv = (reset: boolean) => void;
 
-let _getEnv: GetEnv = (key) => process.env[key];
+let _getEnv: GetEnv = (key) => {
+	const env = (globalThis as any)[ENV_SYMBOL] ?? {};
+	return env[key];
+};
 
 export function setGetEnv(fn: GetEnv, reset = false) {
 	_getEnv = fn;
diff --git a/packages/astro/src/env/vite-plugin-env.ts b/packages/astro/src/env/vite-plugin-env.ts
index fffc37c5e1..97696da7bd 100644
--- a/packages/astro/src/env/vite-plugin-env.ts
+++ b/packages/astro/src/env/vite-plugin-env.ts
@@ -9,6 +9,7 @@ import {
 	VIRTUAL_MODULES_IDS_VALUES,
 } from './constants.js';
 import { type InvalidVariable, invalidVariablesToError } from './errors.js';
+import { ENV_SYMBOL } from './runtime-constants.js';
 import type { EnvSchema } from './schema.js';
 import { getEnvFieldType, validateEnvVariable } from './validators.js';
 
@@ -32,11 +33,7 @@ export function astroEnv({ settings, mode, sync }: AstroEnvPluginParams): Plugin
 				fileURLToPath(settings.config.root),
 				'',
 			);
-			for (const [key, value] of Object.entries(loadedEnv)) {
-				if (value !== undefined) {
-					process.env[key] = value;
-				}
-			}
+			(globalThis as any)[ENV_SYMBOL] = loadedEnv;
 
 			const validatedVariables = validatePublicVariables({
 				schema,
diff --git a/packages/astro/test/container.test.js b/packages/astro/test/container.test.js
index 7d8b61d9c6..13138ef951 100644
--- a/packages/astro/test/container.test.js
+++ b/packages/astro/test/container.test.js
@@ -252,6 +252,16 @@ describe('Container with renderers', () => {
 		const html = await response.text();
 
 		assert.match(html, /I am a react button/);
+		assert.doesNotMatch(html, /<!DOCTYPE html>/);
+	});
+
+	it('the endpoint should return the HTML of the React component, with DOCTYPE when rendered when partial is off', async () => {
+		const request = new Request('https://example.com/react-as-page');
+		const response = await app.render(request);
+		const html = await response.text();
+
+		assert.match(html, /I am a react button/);
+		assert.match(html, /<!DOCTYPE html>/);
 	});
 
 	it('the endpoint should return the HTML of the Vue component', async () => {
@@ -260,6 +270,7 @@ describe('Container with renderers', () => {
 		const html = await response.text();
 
 		assert.match(html, /I am a vue button/);
+		assert.doesNotMatch(html, /<!DOCTYPE html>/);
 	});
 
 	it('Should render a component with directives', async () => {
@@ -269,5 +280,6 @@ describe('Container with renderers', () => {
 
 		assert.match(html, /Button not rendered/);
 		assert.match(html, /I am a react button/);
+		assert.doesNotMatch(html, /<!DOCTYPE html>/);
 	});
 });
diff --git a/packages/astro/test/fixtures/container-custom-renderers/src/pages/react-as-page.ts b/packages/astro/test/fixtures/container-custom-renderers/src/pages/react-as-page.ts
new file mode 100644
index 0000000000..5ddddadac3
--- /dev/null
+++ b/packages/astro/test/fixtures/container-custom-renderers/src/pages/react-as-page.ts
@@ -0,0 +1,12 @@
+import type {APIRoute} from "astro";
+import { experimental_AstroContainer } from "astro/container";
+import renderer from '@astrojs/react/server.js';
+import Component from "../components/button.jsx"
+
+export const GET: APIRoute = async (ctx) => {
+		const container = await experimental_AstroContainer.create();
+		container.addServerRenderer({ renderer });
+		return await container.renderToResponse(Component, {
+			partial: false
+	});
+}
diff --git a/patches/fs-fixture@2.4.0.patch b/patches/fs-fixture@2.4.0.patch
deleted file mode 100644
index 1ec3a3c4db..0000000000
--- a/patches/fs-fixture@2.4.0.patch
+++ /dev/null
@@ -1,24 +0,0 @@
-diff --git a/dist/index.d.mts b/dist/index.d.mts
-index be5b88e034211892ba079c3c5c5c6f5d5f767cd4..55dcc0e99c66719d5fa68d4713b02c1919deae19 100644
---- a/dist/index.d.mts
-+++ b/dist/index.d.mts
-@@ -61,6 +61,10 @@ type Api = ApiBase & {
- type FileTree = {
-     [path: string]: string | FileTree | ((api: Api) => string | Symlink);
- };
--declare const createFixture: (source?: string | FileTree) => Promise<FsFixture>;
-+type CreateFixtureOptions = {
-+    // An absolute path to a different directory than `os.tmpdir()`
-+    tempDir?: string
-+}
-+declare const createFixture: (source?: string | FileTree, opts?: CreateFixtureOptions) => Promise<FsFixture>;
- 
--export { type FileTree, FsFixture, createFixture };
-+export { type FileTree, FsFixture, CreateFixtureOptions, createFixture };
-diff --git a/dist/index.mjs b/dist/index.mjs
-index cd6cab3beebf3f38fe4f1e2a9c58aff2b87258f7..ad24d852a357fd582f9e83ac20cb73bfbcb9bfc0 100755
---- a/dist/index.mjs
-+++ b/dist/index.mjs
-@@ -1 +1 @@
--import s from"fs/promises";import o from"path";import y from"fs";import m from"os";typeof Symbol.asyncDispose!="symbol"&&Object.defineProperty(Symbol,"asyncDispose",{configurable:!1,enumerable:!1,writable:!1,value:Symbol.for("asyncDispose")});class w{path;constructor(t){this.path=t}getPath(...t){return o.join(this.path,...t)}exists(t=""){return s.access(this.getPath(t)).then(()=>!0,()=>!1)}rm(t=""){return s.rm(this.getPath(t),{recursive:!0,force:!0})}writeFile(t,r){return s.writeFile(this.getPath(t),r)}writeJson(t,r){return this.writeFile(t,JSON.stringify(r,null,2))}readFile(t,r){return s.readFile(this.getPath(t),r)}async[Symbol.asyncDispose](){await this.rm()}}const g=y.realpathSync(m.tmpdir()),b=`fs-fixture-${Date.now()}`;let l=0;const P=()=>(l+=1,l);class h{target;type;path;constructor(t,r){this.target=t,this.type=r}}const u=(i,t,r)=>{const e=[];for(const n in i){if(!Object.hasOwn(i,n))continue;const c=o.join(t,n);let a=i[n];if(typeof a=="function"){const f=Object.assign(Object.create(r),{filePath:c}),p=a(f);if(p instanceof h){p.path=c,e.push(p);continue}else a=p}typeof a=="string"?e.push({path:c,content:a}):e.push(...u(a,c,r))}return e},d=async i=>{const t=o.join(g,`${b}-${P()}/`);if(await s.mkdir(t,{recursive:!0}),i){if(typeof i=="string")await s.cp(i,t,{recursive:!0});else if(typeof i=="object"){const r={fixturePath:t,getPath:(...e)=>o.join(t,...e),symlink:(e,n)=>new h(e,n)};await Promise.all(u(i,t,r).map(async e=>{await s.mkdir(o.dirname(e.path),{recursive:!0}),e instanceof h?await s.symlink(e.target,e.path,e.type):await s.writeFile(e.path,e.content)}))}}return new w(t)};export{d as createFixture};
-+import s from"fs/promises";import o from"path";import y from"fs";import m from"os";typeof Symbol.asyncDispose!="symbol"&&Object.defineProperty(Symbol,"asyncDispose",{configurable:!1,enumerable:!1,writable:!1,value:Symbol.for("asyncDispose")});class w{path;constructor(t){this.path=t}getPath(...t){return o.join(this.path,...t)}exists(t=""){return s.access(this.getPath(t)).then(()=>!0,()=>!1)}rm(t=""){return s.rm(this.getPath(t),{recursive:!0,force:!0})}writeFile(t,r){return s.writeFile(this.getPath(t),r)}writeJson(t,r){return this.writeFile(t,JSON.stringify(r,null,2))}readFile(t,r){return s.readFile(this.getPath(t),r)}async[Symbol.asyncDispose](){await this.rm()}}const g=y.realpathSync(m.tmpdir()),b=`fs-fixture-${Date.now()}`;let l=0;const P=()=>(l+=1,l);class h{target;type;path;constructor(t,r){this.target=t,this.type=r}}const u=(i,t,r)=>{const e=[];for(const n in i){if(!Object.hasOwn(i,n))continue;const c=o.join(t,n);let a=i[n];if(typeof a=="function"){const f=Object.assign(Object.create(r),{filePath:c}),p=a(f);if(p instanceof h){p.path=c,e.push(p);continue}else a=p}typeof a=="string"?e.push({path:c,content:a}):e.push(...u(a,c,r))}return e},d=async (i, opts)=>{const t=o.join(opts?.tempDir ?? g,`${b}-${P()}/`);if(await s.mkdir(t,{recursive:!0}),i){if(typeof i=="string")await s.cp(i,t,{recursive:!0});else if(typeof i=="object"){const r={fixturePath:t,getPath:(...e)=>o.join(t,...e),symlink:(e,n)=>new h(e,n)};await Promise.all(u(i,t,r).map(async e=>{await s.mkdir(o.dirname(e.path),{recursive:!0}),e instanceof h?await s.symlink(e.target,e.path,e.type):await s.writeFile(e.path,e.content)}))}}return new w(t)};export{d as createFixture};