Initial commit: LMS microservices scaffold

- Gradle multi-module: libs/{common-http,security-jwt,markdown,test-support},
  services/{identity,academic,progress,gateway}, web (Thymeleaf+htmx)
- identity-service: JWT auth (RSA), accounts, students, groups, enrollment,
  import from XLSX/CSV, credentials export, password reset
- academic-service: lab import from JSON/zip (markdown + YAML + variants),
  levels, API
- progress-service: schema for student levels and variant assignments
- gateway: Spring Cloud Gateway, JWT validation, route propagation
- web: Server-side UI with flex/footer layout, light/dark theme toggle,
  admin dashboard, groups CRUD, student portal placeholder
- docker-compose: PostgreSQL 18
- Tests: identity smoke test with Testcontainers

settings.gradle.kts

@@ -0,0 +1,31 @@
+// Entry point of the Gradle build: declares repositories and subprojects.
+// Docs: https://docs.gradle.org/current/userguide/multi_project_builds.html
+
+dependencyResolutionManagement {
+    @Suppress("UnstableApiUsage")
+    repositories {
+        mavenCentral()
+    }
+}
+
+plugins {
+    // Automatically provision the JDK declared by toolchains.
+    id("org.gradle.toolchains.foojay-resolver-convention") version "1.0.0"
+}
+
+rootProject.name = "LMS"
+
+// Shared libraries (no Spring Boot application, plain JVM/Spring libraries).
+include(":libs:common-http")
+include(":libs:security-jwt")
+include(":libs:markdown")
+include(":libs:test-support")
+
+// Domain microservices.
+include(":services:identity-service")
+include(":services:academic-service")
+include(":services:progress-service")
+include(":services:gateway")
+
+// Server-side web UI (BFF): Thymeleaf + htmx.
+include(":web")