HeliboardL fork with Gemini AI proofreading, toolbar improvements, and LeanBitLab branding

Features:
- Gemini AI-powered proofreading and translation toolbar keys
- Improved toolbar key backgrounds (squircle shape)
- Incognito mode indicator on spacebar
- LeanBitLab branding overlay on app icon
- Gesture library downloader improvements

Author: LeanBitLab

.gitignore

@@ -12,3 +12,9 @@ app/.cxx
 app/.attach_*
 fastlane/Appfile
 tools/*.txt
+
+# Keys & Secrets (per build-checklist.md)
+*.jks
+*.keystore
+keystore.properties
+signing.properties

app/build.gradle.kts

@@ -1,4 +1,5 @@
 import com.android.build.api.variant.ApplicationVariant
+import java.util.Properties
 
 plugins {
     id("com.android.application")
@@ -7,11 +8,18 @@ plugins {
     kotlin("plugin.compose") version "2.2.21"
 }
 
+// Load keystore properties
+val keystorePropertiesFile = rootProject.file("keystore.properties")
+val keystoreProperties = Properties()
+if (keystorePropertiesFile.exists()) {
+    keystoreProperties.load(keystorePropertiesFile.inputStream())
+}
+
 android {
     compileSdk = 35
 
     defaultConfig {
-        applicationId = "helium314.keyboard"
+        applicationId = "helium314.keyboardl"
         minSdk = 21
         targetSdk = 35
         versionCode = 3603
@@ -23,12 +31,26 @@ android {
         proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
     }
 
+    signingConfigs {
+        if (keystorePropertiesFile.exists()) {
+            create("release") {
+                keyAlias = keystoreProperties["keyAlias"] as String
+                keyPassword = keystoreProperties["keyPassword"] as String
+                storeFile = rootProject.file(keystoreProperties["storeFile"] as String)
+                storePassword = keystoreProperties["storePassword"] as String
+            }
+        }
+    }
+
     buildTypes {
         release {
             isMinifyEnabled = true
             isShrinkResources = false
             isDebuggable = false
             isJniDebuggable = false
+            if (keystorePropertiesFile.exists()) {
+                signingConfig = signingConfigs.getByName("release")
+            }
         }
         create("nouserlib") { // same as release, but does not allow the user to provide a library
             isMinifyEnabled = true
@@ -54,7 +76,7 @@ android {
             signingConfig = signingConfigs.getByName("debug")
             applicationIdSuffix = ".debug"
         }
-        base.archivesBaseName = "HeliBoard_" + defaultConfig.versionName
+        base.archivesBaseName = "HeliboardL_" + defaultConfig.versionName
         // got a little too big for GitHub after some dependency upgrades, so we remove the largest dictionary
         androidComponents.onVariants { variant: ApplicationVariant ->
             if (variant.buildType == "debug") {
@@ -136,6 +158,10 @@ dependencies {
     implementation("sh.calvin.reorderable:reorderable:2.4.3") // for easier re-ordering, todo: check 3.0.0
     implementation("com.github.skydoves:colorpicker-compose:1.1.3") // for user-defined colors
 
+    // gemini ai proofreading
+    implementation("com.google.ai.client.generativeai:generativeai:0.9.0")
+    implementation("androidx.security:security-crypto:1.1.0-alpha06") // for encrypted API key storage
+
     // test
     testImplementation(kotlin("test"))
     testImplementation("junit:junit:4.13.2")

app/proguard-rules.pro

@@ -12,3 +12,15 @@
 # after upgrading to gradle 8, stack traces contain "unknown source"
 -keepattributes SourceFile,LineNumberTable
 -dontobfuscate
+
+# Gemini SDK dependencies
+-dontwarn com.google.errorprone.annotations.CanIgnoreReturnValue
+-dontwarn com.google.errorprone.annotations.CheckReturnValue
+-dontwarn com.google.errorprone.annotations.Immutable
+-dontwarn com.google.errorprone.annotations.RestrictedApi
+
+# Keep Gemini API classes
+-keep class com.google.ai.client.generativeai.** { *; }
+-keep class helium314.keyboard.latin.utils.GeminiProofreadService { *; }
+-keep class helium314.keyboard.latin.utils.ProofreadHelper { *; }
+-keep class helium314.keyboard.latin.utils.ProofreadHelper$* { *; }

app/src/main/AndroidManifest.xml

@@ -13,6 +13,7 @@ SPDX-License-Identifier: Apache-2.0 AND GPL-3.0-only
     <uses-permission android:name="android.permission.VIBRATE" />
     <uses-permission android:name="android.permission.WRITE_USER_DICTIONARY" />
     <uses-permission android:name="android.permission.READ_CONTACTS" />
+    <uses-permission android:name="android.permission.INTERNET" />
 
     <application android:label="@string/english_ime_name"
             android:name="helium314.keyboard.latin.App"

app/src/main/java/helium314/keyboard/keyboard/KeyboardActionListenerImpl.kt

@@ -31,7 +31,7 @@ import kotlin.math.min
 
 class KeyboardActionListenerImpl(private val latinIME: LatinIME, private val inputLogic: InputLogic) : KeyboardActionListener {
 
-    private val connection = inputLogic.mConnection
+    private val connection = inputLogic.connection
     private val emojiAltPhysicalKeyDetector by lazy { EmojiAltPhysicalKeyDetector(latinIME.resources) }
 
     // We expect to have only one decoder in almost all cases, hence the default capacity of 1.
@@ -68,8 +68,7 @@ class KeyboardActionListenerImpl(private val latinIME: LatinIME, private val inp
         if (!ProductionFlags.IS_HARDWARE_KEYBOARD_SUPPORTED)
             return false
 
-        val keyIdentifier = keyEvent.deviceId.toLong() shl 32 + keyEvent.keyCode
-        return inputLogic.mCurrentlyPressedHardwareKeys.remove(keyIdentifier)
+        return false
     }
 
     override fun onKeyDown(keyCode: Int, keyEvent: KeyEvent): Boolean {
@@ -102,7 +101,12 @@ class KeyboardActionListenerImpl(private val latinIME: LatinIME, private val inp
     override fun onCodeInput(primaryCode: Int, x: Int, y: Int, isKeyRepeat: Boolean) {
         when (primaryCode) {
             KeyCode.TOGGLE_AUTOCORRECT -> return settings.toggleAutoCorrect()
-            KeyCode.TOGGLE_INCOGNITO_MODE -> return settings.toggleAlwaysIncognitoMode()
+            KeyCode.TOGGLE_INCOGNITO_MODE -> {
+                settings.toggleAlwaysIncognitoMode()
+                // Invalidate keyboard to update spacebar incognito icon immediately
+                keyboardSwitcher.mainKeyboardView?.invalidateAllKeys()
+                return
+            }
         }
         val mkv = keyboardSwitcher.mainKeyboardView