Update all dependencies to March 2026 versions

Major version bumps:
- AGP 8.7.3 → 9.1.0 (remove kotlin-android plugin, now built-in)
- Kotlin 2.0.21 → 2.3.20
- Gradle 8.9 → 9.4.0
- Compose BOM 2024.12.01 → 2026.03.00
- compileSdk/targetSdk 35 → 36

Library updates:
- core-ktx 1.15.0 → 1.18.0
- lifecycle 2.8.7 → 2.10.0
- activity-compose 1.9.3 → 1.13.0
- CameraX 1.4.1 → 1.5.1
- exifinterface 1.3.7 → 1.4.2

AGP 9 migration: removed org.jetbrains.kotlin.android plugin (Kotlin
support is now built into AGP), removed kotlinOptions block (JVM
target handled by compileOptions).

Bump version to 1.1.4.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

gradle/libs.versions.toml

@@ -1,12 +1,12 @@
 [versions]
-agp = "8.7.3"
-kotlin = "2.0.21"
-coreKtx = "1.15.0"
-lifecycleRuntimeKtx = "2.8.7"
-activityCompose = "1.9.3"
-composeBom = "2024.12.01"
-camerax = "1.4.1"
-exifinterface = "1.3.7"
+agp = "9.1.0"
+kotlin = "2.3.20"
+coreKtx = "1.18.0"
+lifecycleRuntimeKtx = "2.10.0"
+activityCompose = "1.13.0"
+composeBom = "2026.03.00"
+camerax = "1.5.1"
+exifinterface = "1.4.2"
 playServicesLocation = "21.3.0"
 junit = "4.13.2"
 
@@ -41,5 +41,4 @@ junit = { group = "junit", name = "junit", version.ref = "junit" }
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }
-kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
 kotlin-compose = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }