Placeholder, docs for fir-oss

docs/angular/.opensource/project.json

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+{
+    "name": "Angular adapter",
+    "platforms": [
+      "app_hosting"
+    ],
+    "description": "Official Angular adapter for Firebase App Hosting",
+    "content": "README.md"
+}

docs/angular/README.md

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+# App Hosting Angular Adapter
+
+Official Angular support for Firebase App Hosting.
+
+### Versions supported
+
+| Version | Status | Deprecation           |
+|---------|--------|-----------------------|
+| 18.2.x  | lts    | 2026-10-9             |
+| 19.0.x  | active | not before 2025-10-9  |
+| 19.1.x  | active | not before 2025-10-9  |
+| 19.2.x  | active | -                     |
+
+[See Firebase App Hosting's runtime support policy](https://firebase.google.com/docs/app-hosting/frameworks-tooling#runtimes-for-app-hosting) for more information.
+
+## Known limitations
+
+* **I18n:** While core I18n functionality works, direct navigation to SSR pages can result in errors.
+* **Localization:** Building versions for different locales isn't supported.
+* **Builders:** Only the Application builder is currently supported.
+* **Environments and Monorepo Tooling:** Angular projects that have more than a single application target will fail. For more complete monorepo support, use Nx.
+
+[See Firebase App Hosting's FAQ and troubleshooting documentation](https://firebase.google.com/docs/app-hosting/troubleshooting) for up-to-date information on the current limitations of the platform.

docs/astro/.opensource/project.json

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+{
+    "name": "Astro adapter",
+    "platforms": [
+      "app_hosting"
+    ],
+    "description": "Experimental Astro adapter for Firebase App Hosting",
+    "content": "README.md"
+}

docs/astro/README.md

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+# App Hosting Astro Adapter
+
+Experimental support for Astro on Firebase App Hosting, [see the work-in-progress here](https://github.com/FirebaseExtended/firebase-framework-tools/pull/297).
+
+## Instructions for use
+
+To use follow these instructions:
+
+1. Install the `@apphosting/astro-adapter` Astro adapter with the following command in your terminal:
+`npx astro add @apphosting/astro-adapter`
+1. Add the adapter with the standalone rendering mode to your astro.config.* file:
+```js
+import { defineConfig } from 'astro/config';
+import node from '@apphosting/astro-adapter';
+
+export default defineConfig({
+  output: 'server',
+  adapter: node({
+    mode: 'standalone',
+  }),
+});
+```
+1. Push the changes to github and kickoff a new rollout
+
+> **Experimental:** While this adapter was built by Google employees, it is not currently an official Google Cloud product. Support is best-effort only.

docs/nextjs/.opensource/project.json

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+{
+    "name": "Next.js adapter",
+    "platforms": [
+      "app_hosting"
+    ],
+    "description": "Official Next.js adapter for Firebase App Hosting",
+    "content": "README.md"
+}

docs/nextjs/README.md

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+# App Hosting Next.js Adapter
+
+Official Next.js support for Firebase App Hosting.
+
+## Versions supported
+
+| Version | Status | Deprecation           |
+|---------|--------|-----------------------|
+| 13.5.x  | lts    | 2026-10-9             |
+| 14.2.x  | lts    | 2026-10-9             |
+| 15.0.x  | active | not before 2025-10-9  |
+| 15.1.x  | active | not before 2025-10-9  |
+| 15.2.x  | active | -                     |
+
+[See Firebase App Hosting's runtime support policy](https://firebase.google.com/docs/app-hosting/frameworks-tooling#runtimes-for-app-hosting) for more information.
+
+## Known limitations
+
+* By default, the [built-in NextJS image optimization](https://nextjs.org/.docs/app/building-your-application/optimizing/images) is disabled on App Hosting unless you explicitly set [`images.unoptimized`](https://nextjs.org/docs/pages/api-reference/components/image#unoptimized) to false or use a custom [Image Loader.](https://nextjs.org/docs/app/api-reference/config/next-config-js/images#example-loader-configuration) See [Optimize image loading on Next.js](/docs/app-hosting/optimize-image-loading).
+* URL paths containing percent-encoded characters are decoded by Cloud Run. This may cause issues with features that expect only encoded URL paths, such as Next.js parallel routing.
+* Currently, App Hosting limits the caching for NextJS apps using [middleware](https://nextjs.org/docs/app/building-your-application/routing/middleware). Over time, cache hit rates should improve.
+* URL paths containing percent-encoded characters are decoded by Cloud Run. This may cause issues with features that expect only encoded URL paths, such as [Next.js parallel routing](https://nextjs.org/docs/app/building-your-application/routing/parallel-routes)
+
+[See Firebase App Hosting's FAQ and troubleshooting documentation](https://firebase.google.com/docs/app-hosting/troubleshooting) for up-to-date information on the current limitations of the platform.

docs/nitro/.opensource/project.json

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+{
+    "name": "Nitro preset",
+    "platforms": [
+      "app_hosting"
+    ],
+    "related": [
+      "FirebaseExtended/firebase-framework-tools::docs::nuxt"
+    ],
+    "description": "Community-supported Nitro preset for Firebase App Hosting",
+    "content": "README.md"
+}

docs/nitro/README.md

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+# App Hosting Nitro Adapter
+
+
+Applications powered by Nitro have zero-configuration support for Firebase App Hosting, using the Firebase App Hosting preset. [Learn more in the Nitro documentation](https://nitro.build/deploy/providers/firebase).
+
+> **Community-supported:** While built in collaboration with Firebase App Hosting, the Nitro preset is not currently an official Google Cloud product. Support is best-effort only.

docs/nuxt/.opensource/project.json

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+{
+    "name": "Nuxt adapter",
+    "platforms": [
+      "app_hosting"
+    ],
+    "related": [
+      "FirebaseExtended/firebase-framework-tools::docs::nitro"
+    ],
+    "description": "Deploy Nuxt applications to Firebase App Hosting using the community-supported Nitro adapter",
+    "content": "README.md"
+}

docs/nuxt/README.md

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+# Nuxt on Firebase App Hosting
+
+Nuxt support on Firebase App Hosting is powered by the [community-supported Nitro preset](https://firebaseopensource.com/projects/FirebaseExtended/firebase-framework-tools::docs::nuxt).
+
+> **Community-supported:** While built in collaboration with Firebase App Hosting, the Nitro preset is not currently an official Google Cloud product. Support is best-effort only.