fix: resolve prek lint failures (golangci-lint, shellcheck, rubocop)

- Move kreuzberg_extract_c.c to scripts/c/ subdirectory to fix Go linter
  rejecting C source files in a non-cgo Go module directory
- Add shellcheck source directive for sdkman-init.sh in java-lint.sh
- Refactor Ruby example to use anonymous class instead of top-level class
  definition to satisfy Style/OneClassPerFile cop

Author: Goldziher

packages/ruby/examples/async_patterns.rb

@@ -215,18 +215,17 @@ def register_validator
 # ============================================================================
 
 # Example OCR backend implementation for custom processing.
-class CustomOcrBackend
-  def process_image(image_bytes, language)
-    "Extracted text from #{image_bytes.length} bytes using #{language}"
-  end
+def register_ocr_backend
+  backend = Class.new do
+    def process_image(image_bytes, language)
+      "Extracted text from #{image_bytes.length} bytes using #{language}"
+    end
 
-  def supports_language?(lang)
-    %w[eng deu fra].include?(lang)
-  end
-end
+    def supports_language?(lang)
+      %w[eng deu fra].include?(lang)
+    end
+  end.new
 
-def register_ocr_backend
-  backend = CustomOcrBackend.new
   Kreuzberg.register_ocr_backend('custom', backend)
 
   config = {

scripts/task/java-lint.sh

@@ -7,6 +7,7 @@ root="$(git rev-parse --show-toplevel)"
 # Source SDKMAN if available
 if [ -f ~/.sdkman/bin/sdkman-init.sh ]; then
   set +u
+  # shellcheck source=/dev/null
   source ~/.sdkman/bin/sdkman-init.sh
   sdk use java 25.0.1-tem 2>/dev/null || true
   sdk use maven 3.9.11 2>/dev/null || true

…rk-harness/scripts/kreuzberg_extract_c.c …-harness/scripts/c/kreuzberg_extract_c.ctools/benchmark-harness/scripts/kreuzberg_extract_c.c renamed to tools/benchmark-harness/scripts/c/kreuzberg_extract_c.c tools/benchmark-harness/scripts/kreuzberg_extract_c.c renamed to tools/benchmark-harness/scripts/c/kreuzberg_extract_c.c

@@ -1084,7 +1084,7 @@ fn compile_c_extraction_binary(source: &Path) -> Result<PathBuf> {
 
 /// Create C adapter (persistent server mode)
 pub fn create_c_adapter(ocr_enabled: bool) -> Result<SubprocessAdapter> {
-    let source_path = get_script_path("kreuzberg_extract_c.c")?;
+    let source_path = get_script_path("c/kreuzberg_extract_c.c")?;
     let binary_path = compile_c_extraction_binary(&source_path)?;
 
     let args = vec![ocr_flag(ocr_enabled), "server".to_string()];
@@ -1106,7 +1106,7 @@ pub fn create_c_adapter(ocr_enabled: bool) -> Result<SubprocessAdapter> {
 
 /// Create C batch adapter
 pub fn create_c_batch_adapter(ocr_enabled: bool) -> Result<SubprocessAdapter> {
-    let source_path = get_script_path("kreuzberg_extract_c.c")?;
+    let source_path = get_script_path("c/kreuzberg_extract_c.c")?;
     let binary_path = compile_c_extraction_binary(&source_path)?;
 
     let args = vec![ocr_flag(ocr_enabled), "batch".to_string()];