Add ktlint & reformat kotlin code

Add ktlint gradle plugin to the Android project with Compose-friendly
configuration:
- Use android_studio code style with 120 char line length
- Allow wildcard imports (common in Compose code)
- Allow PascalCase function names for @composable functions
- Exclude UniFFI-generated code from linting

The ktlint plugin auto-formatted all Kotlin files (spaces to tabs per
android_studio style).

Prompts:
- "is there a kotlin equivalent of cargo format"
- "how would we install/configure/use each of these"
- "go with ktlint"
- "add it to lint.sh"
- "just run lint.sh"

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Claude kept making indentation errors. Easier to just run a standard
formatter. Apparently there a few, picked this one as claude said it was
popular and it seems to work.

Author: timabell

android/.editorconfig

@@ -0,0 +1,11 @@
+[*.{kt,kts}]
+ktlint_code_style = android_studio
+max_line_length = 120
+# Allow wildcard imports (common in Compose)
+ktlint_standard_no-wildcard-imports = disabled
+# Allow PascalCase for @Composable functions (Compose convention)
+ktlint_function_naming_ignore_when_annotated_with = Composable
+
+# Disable ktlint for generated UniFFI bindings
+[app/src/main/java/uniffi/**/*.kt]
+ktlint_standard = disabled

android/app/build.gradle.kts

@@ -1,85 +1,91 @@
 plugins {
-    alias(libs.plugins.android.application)
-    alias(libs.plugins.kotlin.android)
-    alias(libs.plugins.kotlin.compose)
+	alias(libs.plugins.android.application)
+	alias(libs.plugins.kotlin.android)
+	alias(libs.plugins.kotlin.compose)
+	alias(libs.plugins.ktlint)
 }
 
 android {
-    namespace = "co.rustworkshop.markdownneuraxis"
-    compileSdk = 35
+	namespace = "co.rustworkshop.markdownneuraxis"
+	compileSdk = 35
 
-    val keystorePath = System.getenv("ANDROID_KEYSTORE_PATH")
-    val keystorePassword = System.getenv("ANDROID_KEYSTORE_PASSWORD")
-    val hasSigningConfig = keystorePath != null && keystorePassword != null
+	val keystorePath = System.getenv("ANDROID_KEYSTORE_PATH")
+	val keystorePassword = System.getenv("ANDROID_KEYSTORE_PASSWORD")
+	val hasSigningConfig = keystorePath != null && keystorePassword != null
 
-    if (hasSigningConfig) {
-        signingConfigs {
-            create("release") {
-                storeFile = file(keystorePath!!)
-                storePassword = keystorePassword
-                keyAlias = "mdnx-gh-apk-signing"
-                keyPassword = keystorePassword
-            }
-        }
-    }
+	if (hasSigningConfig) {
+		signingConfigs {
+			create("release") {
+				storeFile = file(keystorePath!!)
+				storePassword = keystorePassword
+				keyAlias = "mdnx-gh-apk-signing"
+				keyPassword = keystorePassword
+			}
+		}
+	}
 
-    defaultConfig {
-        applicationId = "co.rustworkshop.markdownneuraxis"
-        minSdk = 29
-        targetSdk = 35
-        versionCode = 1
-        versionName = "0.1.0"
+	defaultConfig {
+		applicationId = "co.rustworkshop.markdownneuraxis"
+		minSdk = 29
+		targetSdk = 35
+		versionCode = 1
+		versionName = "0.1.0"
 
-        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
-    }
+		testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+	}
 
-    buildTypes {
-        release {
-            isMinifyEnabled = false
-            proguardFiles(
-                getDefaultProguardFile("proguard-android-optimize.txt"),
-                "proguard-rules.pro"
-            )
-            if (hasSigningConfig) {
-                signingConfig = signingConfigs.getByName("release")
-            }
-        }
-    }
+	buildTypes {
+		release {
+			isMinifyEnabled = false
+			proguardFiles(
+				getDefaultProguardFile("proguard-android-optimize.txt"),
+				"proguard-rules.pro"
+			)
+			if (hasSigningConfig) {
+				signingConfig = signingConfigs.getByName("release")
+			}
+		}
+	}
 
-    compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_11
-        targetCompatibility = JavaVersion.VERSION_11
-    }
+	compileOptions {
+		sourceCompatibility = JavaVersion.VERSION_11
+		targetCompatibility = JavaVersion.VERSION_11
+	}
 
-    kotlinOptions {
-        jvmTarget = "11"
-    }
+	kotlinOptions {
+		jvmTarget = "11"
+	}
 
-    buildFeatures {
-        compose = true
-    }
+	buildFeatures {
+		compose = true
+	}
 
-    lint {
-        // Generated UniFFI bindings use APIs not available at minSdk — safe at runtime via JNA
-        lintConfig = file("lint.xml")
-    }
+	lint {
+		// Generated UniFFI bindings use APIs not available at minSdk — safe at runtime via JNA
+		lintConfig = file("lint.xml")
+	}
 }
 
-
 dependencies {
-    implementation(libs.androidx.core.ktx)
-    implementation(libs.androidx.lifecycle.runtime.ktx)
-    implementation(libs.androidx.activity.compose)
-    implementation(platform(libs.androidx.compose.bom))
-    implementation(libs.androidx.ui)
-    implementation(libs.androidx.ui.graphics)
-    implementation(libs.androidx.ui.tooling.preview)
-    implementation(libs.androidx.material3)
-    implementation(libs.androidx.material.icons.extended)
-    implementation(libs.androidx.documentfile)
+	implementation(libs.androidx.core.ktx)
+	implementation(libs.androidx.lifecycle.runtime.ktx)
+	implementation(libs.androidx.activity.compose)
+	implementation(platform(libs.androidx.compose.bom))
+	implementation(libs.androidx.ui)
+	implementation(libs.androidx.ui.graphics)
+	implementation(libs.androidx.ui.tooling.preview)
+	implementation(libs.androidx.material3)
+	implementation(libs.androidx.material.icons.extended)
+	implementation(libs.androidx.documentfile)
+
+	// JNA for UniFFI runtime
+	implementation(libs.jna) { artifact { type = "aar" } }
 
-    // JNA for UniFFI runtime
-    implementation(libs.jna) { artifact { type = "aar" } }
+	debugImplementation(libs.androidx.ui.tooling)
+}
 
-    debugImplementation(libs.androidx.ui.tooling)
+ktlint {
+	filter {
+		exclude { it.file.path.contains("/uniffi/") }
+	}
 }