Firebase AI Logic onboarding experience fixes for Flutter and Android. (#9258)

* adding a firebase-tools install step for Flutter project inits specifically

* Android onboarding improvements

* Firebase CLI typo fix

* Another typo fix

* consistency change

* Update src/mcp/resources/guides/init_ai.ts

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

---------

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: apeynado

src/mcp/prompts/core/init.ts

@@ -63,6 +63,8 @@ Follow the steps below taking note of any user instructions provided above.
      - Run the \`firebase_list_apps\` tool to list their apps, and find an app that matches their "Workspace platform"
      - If there is no app that matches that criteria, use the \`firebase_create_app\` tool to create the app with the appropriate platform
    - Do the following only for Flutter apps
+     - Execute \`firebase --version\`  to check if the Firebase CLI is installed
+       - If it isn't installed, run \`npm install -g firebase-tools\` to install it. If it is installed, skip to the next step. 
      - Install the Flutterfire CLI
      - Use the Flutterfire CLI tool to connect to the project
      - Use the Flutterfire CLI to register the appropriate applications based on the user's input

src/mcp/resources/guides/init_ai.ts

@@ -61,6 +61,10 @@ Take the following actions depending on the language and platform or framework t
 
 - Use the firebase_init tool to set up ailogic
 
+- For Android, the Google Services Gradle plugin is required to prevent the app from crashing. You must add it in two files:
+  - 1.  In your project-level \`/build.gradle.kts\` file, add the plugin to the plugins block: id("com.google.gms.google-services") version "4.4.2" apply false
+  - 2.  In your **app-level** \`/app/build.gradle.kts\` file, apply the plugin: id("com.google.gms.google-services")
+
 ### 3\. Implement AI Features
 
 #### Gather Building Blocks for Code Generation
@@ -78,6 +82,10 @@ Take the following actions depending on the language and platform or framework t
     - Kotlin Only
       - implementation(platform("com.google.firebase:firebase-bom:34.3.0")) or a higher bom version if it is available
       - implementation("com.google.firebase:firebase-ai")
+    - CRITICAL: When initializing the Firebase AI model in Kotlin, you must explicitly specify the Google AI backend by calling the googleAI() function. The correct syntax is GenerativeBackend.googleAI().
+      - Correct Example: val model = Firebase.ai(backend = GenerativeBackend.googleAI()).generativeModel(...)
+      - Incorrect: Do not use the invalid constant GenerativeBackend.GOOGLE_AI.
+    - The Kotlin SDK public API makes extensive use of suspend functions and coroutines. Make sure the code you generate is based on that paradigm and avoid using callbacks unless absolutely necessary in Kotlin
   - For Flutter apps, always include the following imports. do not forget or modify them
     - import 'package:firebase_core/firebase_core.dart';
     - import 'package:firebase_ai/firebase_ai.dart';