Add Racket tree-sitter support, remove Kotlin

- Add tree-sitter-racket dependency (v0.24)
- Initialize Racket parser in code search
- Add .rkt, .rktl, .rktd file extensions
- Add test_racket_search test
- Remove Kotlin from supported languages (was disabled)
- Clean up duplicate test files

Supported languages: Rust, Python, JavaScript, TypeScript, Go, Java, C, C++, Racket

Cargo.lock

@@ -1453,6 +1453,7 @@ dependencies = [
  "tree-sitter-java",
  "tree-sitter-javascript",
  "tree-sitter-python",
+ "tree-sitter-racket",
  "tree-sitter-rust",
  "tree-sitter-scheme",
  "tree-sitter-typescript",
@@ -3946,6 +3947,16 @@ dependencies = [
  "tree-sitter-language",
 ]
 
+[[package]]
+name = "tree-sitter-racket"
+version = "0.24.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8395b6a054e6264c67e1ef915f239c4f86575b7d7c69638bdbf3c336c58f128"
+dependencies = [
+ "cc",
+ "tree-sitter-language",
+]
+
 [[package]]
 name = "tree-sitter-rust"
 version = "0.23.3"

crates/g3-core/Cargo.toml

@@ -40,6 +40,7 @@ tree-sitter-cpp = "0.23"
 # tree-sitter-kotlin = "0.3"  # Temporarily disabled - incompatible with tree-sitter 0.24
 tree-sitter-haskell = { git = "https://github.com/tree-sitter/tree-sitter-haskell" }
 tree-sitter-scheme = "0.24"
+tree-sitter-racket = "0.24"
 streaming-iterator = "0.1"
 walkdir = "2.4"
 

crates/g3-core/examples/test_code/Example.kt

@@ -1,24 +0,0 @@
-package com.example
-
-class Person(val name: String, val age: Int) {
-    fun greet() {
-        println("Hello, I'm $name")
-    }
-    
-    fun getAge(): Int {
-        return age
-    }
-}
-
-interface Greeter {
-    fun sayHello()
-}
-
-fun main() {
-    val person = Person("Alice", 30)
-    person.greet()
-}
-
-fun add(a: Int, b: Int): Int {
-    return a + b
-}

crates/g3-core/src/code_search/searcher.rs

@@ -121,17 +121,6 @@ impl TreeSitterSearcher {
             languages.insert("cpp".to_string(), language);
         }
 
-        // // Initialize Kotlin - Temporarily disabled due to tree-sitter version incompatibility
-        // {
-        //     let mut parser = Parser::new();
-        //     let language: Language = tree_sitter_kotlin::language();
-        //     parser
-        //         .set_language(&language)
-        //         .map_err(|e| anyhow!("Failed to set Kotlin language: {}", e))?;
-        //     parsers.insert("kotlin".to_string(), parser);
-        //     languages.insert("kotlin".to_string(), language);
-        // }
-
         // Initialize Haskell
         {
             let mut parser = Parser::new();
@@ -154,6 +143,17 @@ impl TreeSitterSearcher {
             languages.insert("scheme".to_string(), language);
         }
 
+        // Initialize Racket
+        {
+            let mut parser = Parser::new();
+            let language: Language = tree_sitter_racket::LANGUAGE.into();
+            parser
+                .set_language(&language)
+                .map_err(|e| anyhow!("Failed to set Racket language: {}", e))?;
+            parsers.insert("racket".to_string(), parser);
+            languages.insert("racket".to_string(), language);
+        }
+
         if parsers.is_empty() {
             return Err(anyhow!(
                 "No language parsers available. Enable at least one language feature."
@@ -335,9 +335,10 @@ impl TreeSitterSearcher {
             ("java", Some("java")) => true,
             ("c", Some("c" | "h")) => true,
             ("cpp", Some("cpp" | "cc" | "cxx" | "hpp" | "hxx" | "h")) => true,
-            ("kotlin", Some("kt" | "kts")) => true,
+
             ("haskell", Some("hs" | "lhs")) => true,
             ("scheme", Some("scm" | "ss" | "sld" | "sls")) => true,
+            ("racket", Some("rkt" | "rktl" | "rktd")) => true,
             _ => false,
         }
     }

crates/g3-core/src/tool_definitions.rs

@@ -227,7 +227,7 @@ fn create_core_tools(exclude_research: bool) -> Vec<Tool> {
         },
         Tool {
             name: "code_search".to_string(),
-            description: "Syntax-aware code search that understands code structure, not just text. Finds actual functions, classes, methods, and other code constructs - ignores matches in comments and strings. Much more accurate than grep for code searches. Supports batch searches (up to 20 parallel) with structured results and context lines. Languages: Rust, Python, JavaScript, TypeScript, Go, Java, C, C++, Kotlin. Uses tree-sitter query syntax.".to_string(),
+            description: "Syntax-aware code search that understands code structure, not just text. Finds actual functions, classes, methods, and other code constructs - ignores matches in comments and strings. Much more accurate than grep for code searches. Supports batch searches (up to 20 parallel) with structured results and context lines. Languages: Rust, Python, JavaScript, TypeScript, Go, Java, C, C++, Racket. Uses tree-sitter query syntax.".to_string(),
             input_schema: json!({
                 "type": "object",
                 "properties": {
@@ -239,7 +239,7 @@ fn create_core_tools(exclude_research: bool) -> Vec<Tool> {
                             "properties": {
                                 "name": { "type": "string", "description": "Label for this search." },
                                 "query": { "type": "string", "description": "tree-sitter query in S-expression format (e.g., \"(function_item name: (identifier) @name)\")" },
-                                "language": { "type": "string", "enum": ["rust", "python", "javascript", "typescript", "go", "java", "c", "cpp", "kotlin"], "description": "Programming language to search." },
+                                "language": { "type": "string", "enum": ["rust", "python", "javascript", "typescript", "go", "java", "c", "cpp", "racket"], "description": "Programming language to search." },
                                 "paths": { "type": "array", "items": { "type": "string" }, "description": "Paths/dirs to search. Defaults to current dir if empty." },
                                 "context_lines": { "type": "integer", "minimum": 0, "maximum": 20, "default": 0, "description": "Lines of context to include around each match." }
                             },

crates/g3-core/tests/code_search_test.rs

@@ -580,14 +580,21 @@ async fn test_cpp_search() {
 }
 
 #[tokio::test]
-#[ignore]
-async fn test_kotlin_search() {
+async fn test_racket_search() {
+    // Get the workspace root (where Cargo.toml is)
+    let manifest_dir = std::env::var("CARGO_MANIFEST_DIR").unwrap();
+    let workspace_root = std::path::Path::new(&manifest_dir)
+        .parent()
+        .and_then(|p| p.parent())
+        .unwrap();
+    let test_code_path = workspace_root.join("examples/test_code");
+
     let request = CodeSearchRequest {
         searches: vec![SearchSpec {
-            name: "kotlin_classes".to_string(),
-            query: "(class_declaration (type_identifier) @name)".to_string(),
-            language: "kotlin".to_string(),
-            paths: vec!["examples/test_code".to_string()],
+            name: "racket_functions".to_string(),
+            query: r#"(list . (symbol) @kw (#eq? @kw "define") . (list . (symbol) @name))"#.to_string(),
+            language: "racket".to_string(),
+            paths: vec![test_code_path.to_string_lossy().to_string()],
             context_lines: 0,
         }],
         max_concurrency: 4,
@@ -598,11 +605,11 @@ async fn test_kotlin_search() {
     assert_eq!(response.searches.len(), 1);
     assert!(response.searches[0].matches.len() > 0);
 
-    // Should find Person class
+    // Should find greet, add, factorial functions
     let names: Vec<&str> = response.searches[0]
         .matches
         .iter()
         .filter_map(|m| m.captures.get("name").map(|s| s.as_str()))
         .collect();
-    assert!(names.contains(&"Person"));
+    assert!(names.contains(&"greet"));
 }