Doc and layout check

.gitignore

@@ -31,6 +31,9 @@
 #
 # Therefore, instructions below are superset of instructions required for all the projects.
 
+# Temporary output of AI agents.
+.output
+
 # `jenv` local configuration.
 .java-version
 
@@ -55,19 +58,28 @@
 !.idea/codeStyles/
 !.idea/copyright/
 
+# Ignore IDEA config files under `tests`
+/tests/.idea/**
+
 # Gradle interim configs
 **/.gradle/**
 
 # Temp directory for Gradle TestKit runners
 **/.gradle-test-kit/**
 
+# Integration test log files
+/tests/_out/**
+
 # Generated source code
 **/generated/**
 **/*.pb.dart
 **/*.pbenum.dart
 **/*.pbserver.dart
 **/*.pbjson.dart
 
+# Generated source code with custom path under `tests`
+/tests/**/proto-gen/**
+
 # Gradle build files
 **/build/**
 !**/src/**/build/**

.junie/guidelines.md

@@ -0,0 +1,21 @@
+## Guidelines for Junie and AI Agent from JetBrains
+
+Read the `AGENTS.md` file at the root of the project to understand:
+ - the agent responsibilities,
+ - project overview, 
+ - coding guidelines, 
+ - other relevant topics.
+
+Also follow the Junie-specific rules described below.
+
+## Junie Assistance Tips
+
+When working with Junie AI on the Spine Tool-Base project:
+
+1. **Project Navigation**: Use `search_project` to find relevant files and code segments.
+2. **Code Understanding**: Request file structure with `get_file_structure` before editing.
+3. **Code Editing**: Make minimal changes with `search_replace` to maintain project consistency.
+4. **Testing**: Verify changes with `run_test` on relevant test files.
+5. **Documentation**: Follow KDoc style for documentation.
+6. **Kotlin Idioms**: Prefer Kotlin-style solutions over Java-style approaches.
+7. **Version Updates**: Remember to update `version.gradle.kts` for PRs.