Summary

This PR introduces a breaking change to config parsing throughout the Copper codebase. The core change is modifying ComponentConfig::get() to return Result<Option, ConfigError> instead of Option, enabling type errors to propagate rather than being silently
ignored.

Details

• Core Changes (core/cu29_runtime/src/config.rs)

  1. New ConfigError type with proper error handling traits
  2. Changed ComponentConfig::get<T>() signature from Option<T> to Result<Option<T>, ConfigError>
  3. Added TryFrom<&Value> implementations for bool, integers, f64, and String with proper type-mismatch errors
  4. Updated serialize_ron() and deserialize_ron() to return CuResult instead of panicking
  5. Updated render() methods to propagate write errors instead of unwrapping

• Additional Improvements

  1. Mutex poisoning recovery in cu29_log_runtime and cu29_unifiedlog
  2. CUDA error handling improvements in pool.rs
  3. Test updates to use the new error-returning APIs
  4. Removed panic-based tests in favor of proper error assertions

Migration Guide

• ComponentConfig::get() Signature Change

  // Before:
  pub fn get<T: From<Value>>(&self, key: &str) -> Option<T>
  
  // After:
  pub fn get<T>(&self, key: &str) -> Result<Option<T>, ConfigError>
  where
      T: for<'a> TryFrom<&'a Value, Error = ConfigError>,
  

• Migration Pattern

  // Before
  let value: u32 = config.get("key").unwrap_or(default);
  
  // After
  let value: u32 = config.get::<u32>("key")?.unwrap_or(default);
  
  // Before
  let value = config.and_then(|cfg| cfg.get::<String>("key"));
  
  // After
  let value = match config {
      Some(cfg) => cfg.get::<String>("key")?,
      None => None,
  };
  

• Related Changes

  1. Node::get_param<T>() - same signature change
  2. CuConfig::serialize_ron() - now returns CuResult<String> instead of String
  3. CuConfig::deserialize_ron() - now returns CuResult<Self> instead of panicking