feat: add database indices and testing

app/build.gradle.kts

@@ -29,9 +29,13 @@ android {
         versionCode = 1
         versionName = "1.0"
 
-        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+        // testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunner = "androidx.benchmark.junit4.AndroidBenchmarkRunner"
+        testInstrumentationRunnerArguments["androidx.benchmark.suppressErrors"] = "ACTIVITY-MISSING"
     }
 
+    testBuildType = "benchmark"
+
     buildTypes {
         release {
             isMinifyEnabled = false
@@ -40,6 +44,13 @@ android {
                 "proguard-rules.pro"
             )
         }
+        create("benchmark") {
+            initWith(buildTypes.getByName("release"))
+            signingConfig = signingConfigs.getByName("debug")  // sign with debug key for easy deployment
+            installation {
+                enableBaselineProfile = false   // ← disables profile embedding for this build type only
+            }
+        }
     }
     compileOptions {
         sourceCompatibility = JavaVersion.VERSION_11
@@ -61,6 +72,16 @@ android {
         getByName("release") {
             java.srcDirs("build/generated/ksp/release/kotlin")
         }
+        getByName("benchmark") {
+            java.srcDirs("build/generated/ksp/benchmark/kotlin")
+        }
+    }
+}
+
+androidComponents {
+    onVariants(selector().withBuildType("benchmark")) { variant ->
+        variant.packaging.resources.excludes.add("baseline-prof.txt")
+        variant.packaging.resources.excludes.add("baseline.profm")
     }
 }
 
@@ -79,6 +100,9 @@ dependencies {
     testImplementation(libs.junit)
     androidTestImplementation(platform(libs.androidx.compose.bom))
     androidTestImplementation(libs.androidx.compose.ui.test.junit4)
+    implementation(libs.androidx.benchmark.junit4)
+    androidTestImplementation(libs.androidx.runner)
+    androidTestImplementation(libs.androidx.test.ext.junit)
     androidTestImplementation(libs.androidx.espresso.core)
     androidTestImplementation(libs.androidx.junit)
     debugImplementation(libs.androidx.compose.ui.test.manifest)