Scaffold Android project per BRIEF.md

Single-module Kotlin/Compose app with manual DI container. Pure-Kotlin
measurement math (orientation mapping, two-sample per-mode calibration,
EMA smoothing, lock hysteresis, display deadband) fully unit-tested.
Sensor fallback: game rotation vector -> gravity -> low-passed
accelerometer. Live Level (manual Surface|Edge) and Angle (hold-to-zero)
scaffolds; Ruler/Tools placeholders; stub Pro entitlement.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

settings.gradle.kts

@@ -0,0 +1,26 @@
+pluginManagement {
+    repositories {
+        google {
+            content {
+                includeGroupByRegex("com\\.android.*")
+                includeGroupByRegex("com\\.google.*")
+                includeGroupByRegex("androidx.*")
+            }
+        }
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+plugins {
+    id("org.gradle.toolchains.foojay-resolver-convention") version "1.0.0"
+}
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.name = "OnTheLevel"
+include(":app")