JNG-6382 Add llms.txt

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: klm-blzs

llms.txt

@@ -0,0 +1,39 @@
+# Java Embedded Compiler
+
+> A library for compiling Java source code at runtime with pluggable compiler backends (JDK javac and Eclipse ECJ), supporting both in-memory and file-based output in standard Java and OSGi environments.
+
+Key facts:
+- Java 11 (source and target compatibility)
+- Maven 3.9.4 multi-module build, 6 modules
+- OSGi bundles with Declarative Services (Felix maven-bundle-plugin)
+- Pluggable compiler backends: JDK system compiler (javac) and Eclipse ECJ
+- In-memory and file-based compilation with flexible classloading
+- ServiceLoader discovery in standard Java, OSGi DS in containers
+- Apache License 2.0
+
+## Docs
+
+- [README.md](README.md): Project overview with architecture diagrams and quick start guide
+- [AGENTS.md](AGENTS.md): Developer guide with build commands, module details, and coding conventions
+- [CONTRIBUTING.md](CONTRIBUTING.md): Development setup and submission guidelines
+- [.github/CIFLOW.md](.github/CIFLOW.md): CI/CD pipeline and GitFlow branching details
+
+## Modules — Core API
+
+- [java-embedded-compiler/pom.xml](java-embedded-compiler/pom.xml): Core API with CompilerContext (builder), CompilerFactory (strategy interface), CompilerUtil (static compilation entry point), file managers, classloaders, and file objects
+
+## Modules — Compiler Implementations
+
+- [java-embedded-compiler-jdt/pom.xml](java-embedded-compiler-jdt/pom.xml): JdtCompilerFactory — wraps the JDK system compiler (ToolProvider.getSystemJavaCompiler()), requires a full JDK at runtime
+- [java-embedded-compiler-ecj/pom.xml](java-embedded-compiler-ecj/pom.xml): EclipseCompilerFactory — wraps the Eclipse ECJ compiler with two-pass compilation (module-info first, then sources), works with just a JRE
+
+## Modules — Runtime & Integration
+
+- [java-embedded-compiler-osgi/pom.xml](java-embedded-compiler-osgi/pom.xml): CompilerService OSGi DS component that dynamically discovers and ranks CompilerFactory services
+- [java-embedded-compiler-itest/pom.xml](java-embedded-compiler-itest/pom.xml): Karaf 4.4.7 + Pax Exam integration tests covering all compilation modes for both compiler backends
+- [java-embedded-compiler-reports/pom.xml](java-embedded-compiler-reports/pom.xml): JaCoCo aggregate coverage report across all modules
+
+## Optional
+
+- [.github/workflows/build.yml](.github/workflows/build.yml): GitHub Actions CI/CD pipeline (build, test, deploy, tag, release)
+- [LICENSE.txt](LICENSE.txt): Apache License 2.0