- Implement tests for Float32Ptr to validate pointer creation for float32 values.
- Create tests for ExtractJSON to ensure correct extraction of JSON from various input formats.
- Add tests for cleanJavaScriptStringConcat to verify string concatenation handling in JavaScript context.
- Introduce tests for StringSliceContains to check for string presence in slices.
- Implement tests for MergeStringMaps to validate merging behavior of multiple string maps, including overwrites and handling of nil/empty maps.

…ove unused ChatMessage type

…Pex context conversion

…ation

… tests in export_test.go

- Changed modelParams from pointer to value in toGitHubModelsPrompt function for better clarity and safety.
- Updated the assignment of ModelParameters to use the value directly instead of dereferencing a pointer.
- Introduced a new test suite in export_test.go to cover various scenarios for GitHub models evaluation generation, including edge cases and expected outputs.
- Ensured that the tests validate the correct creation of files and their contents based on the provided context and options.

- Added NewPromptPex function to create a new PromptPex instance.
- Implemented Run method to execute the PromptPex pipeline with context management.
- Created context from prompt files or loaded existing context from JSON.
- Developed pipeline steps including intent generation, input specification, output rules, and tests.
- Added functionality for generating groundtruth outputs and evaluating test results.
- Implemented test expansion and rating features for improved test coverage.
- Introduced error handling and logging throughout the pipeline execution.

- Implemented TestCreateContext to validate various prompt YAML configurations and their expected context outputs.
- Added TestCreateContextRunIDUniqueness to ensure unique RunIDs are generated for multiple context creations.
- Created TestCreateContextWithNonExistentFile to handle cases where the prompt file does not exist.
- Developed TestCreateContextPromptValidation to check for valid and invalid prompt formats.
- Introduced TestGithubModelsEvalsGenerate to test the generation of GitHub Models eval files with various scenarios.
- Added TestToGitHubModelsPrompt to validate the conversion of prompts to GitHub Models format.
- Implemented TestExtractTemplateVariables and TestExtractVariablesFromText to ensure correct extraction of template variables.
- Created TestGetMapKeys and TestGetTestScenario to validate utility functions related to maps and test scenarios.

…tPex configuration

… summary generation

… improved summary reporting

…se and restore its implementation; remove obsolete promptpex.go and summary_test.go files

…covering various scenarios and error handling

…entiment analysis test prompt

…neFlags function and update flag parsing to use consistent naming

… in generate_test.go

…ck responses for sentiment analysis stages

…prompts

…odology for test generation

…derMessagesToString for message formatting

…nsion

…ate command

…clarify effort flag usage

…st validation and defaults