Reorganize repository: Move AI Sample Catalog

[JolandaVerhoef]

No description provided.

[gemini-code-assist]

Code Review

This pull request reorganizes the repository by moving the main sample catalog into the ai-sample-catalog subdirectory, updating the root configuration files, and applying minor formatting cleanups across several Kotlin files. The review feedback highlights a few important issues: hardcoded local file URLs were accidentally introduced in the root README.md, the .gitignore inside the subdirectory needs standard wildcards to properly ignore build artifacts in submodules, and the InferenceModeDropdown composable is missing a Modifier parameter, which violates the repository's style guide.

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[gemini-code-assist]

The .gitignore file inside ai-sample-catalog uses leading slashes (e.g., /build, /local.properties), which only match files/directories at the root of the ai-sample-catalog directory. This means build directories and local properties files inside submodules (like app/ or samples/*) won't be ignored if this project is opened standalone.\n\nWe should update it to use standard directory wildcards to ensure all build artifacts and local configuration files are properly ignored.

build/\n.gradle/\n.idea/\n.kotlin/\n**/local.properties\n**/google-services.json\n.DS_Store

[gemini-code-assist]

According to the repository style guide, every composable function (except top-level screen composables) should take a Modifier as its first optional parameter with a default value of Modifier. This allows callers to pass modifiers down and ensures consistent layout behavior. Please add the modifier parameter and apply it to the root Box of InferenceModeDropdown.

fun InferenceModeDropdown(\n    selectedMode: InferenceMode,\n    onModeSelected: (InferenceMode) -> Unit,\n    modifier: Modifier = Modifier,\n) {

References

1. Every composable function (except top level screen composable) should take a Modifier as a parameter with a default value. It should be positionned as the first optional parameter. ^(link)

[keyboardsurfer]

      script: ./gradlew connectedDebugAndroidTest
      working-directory: ai-sample-catalog