M7d: feature settle, S-9 settle up and S-10 settlement detail

SettleScreen (global, per account, editing) and SettlementDetailScreen with
Hilt ViewModels over the :core:model interfaces; proposals, remaining,
warnings and enablement come from SettlementRepository. Fake scenarios in
fakes/settle/, 19 states x sv/en x light/dark goldens (+ 200 % for long),
unit tests for amount input and both state holders.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TQd3pEP9UeN2uifbHknQ7B

android/feature/settle/build.gradle.kts

@@ -1,4 +1,23 @@
 // :feature:settle — Settle up and settlement detail (S-9, S-10; M7d). Convention: android/README.md.
+// Depends on :core:model and :core:design (added by the feature plugin); :core:fakes only for debug and tests.
 plugins {
     id("kvitt.android.feature")
+    alias(libs.plugins.roborazzi)
+}
+
+roborazzi {
+    outputDir.set(file("src/test/screenshots"))
+}
+
+dependencies {
+    // BackHandler: system back with unsaved changes asks "Slänga ändringarna?" (design-spec S-9).
+    implementation(libs.androidx.activity.compose)
+
+    debugImplementation(libs.androidx.compose.ui.test.manifest)
+    testImplementation(libs.kotlinx.coroutines.test)
+    testImplementation(libs.androidx.compose.ui.test.junit4)
+    testImplementation(libs.robolectric)
+    testImplementation(libs.roborazzi)
+    testImplementation(libs.roborazzi.compose)
+    testImplementation(libs.roborazzi.junit.rule)
 }