feat: specify reasong_effort to improve the time to generate a sentence

[hmasdev]

This pull request introduces a new utility for measuring and logging execution time, and integrates it into the sentence generation workflow for improved observability. The most significant changes are the addition of the stopwatch context manager and decorator, their usage in the OpenAI sentence generator, and comprehensive tests to ensure their reliability.

New stopwatch utility

• Added stopwatch context manager and stopwatch_deco decorator in simple_typing_application/utils/stopwatch.py to measure and log execution time of code blocks and functions, with customizable log level, prefix, and postfix.

Integration with sentence generation

• Wrapped the OpenAI agent invocation in generate method of openai_sentence_generator.py with the new stopwatch context manager to log execution time at DEBUG level.

Testing and validation

• Added comprehensive tests for both the context manager and decorator in tests/utils/test_stopwatch.py, covering logging behavior, custom options, error handling, and decorator usage.

Minor improvements

• Updated agent initialization in openai_sentence_generator.py to set reasoning_effort based on model type.

Check

For gpt-5-nano,

• Before: DEBUG:simple_typing_application.sentence_generator.openai_sentence_generator:OpenAI agent invocation: 27.244881 seconds
• After: DEBUG:simple_typing_application.sentence_generator.openai_sentence_generator:OpenAI agent invocation: 2.191623 seconds

[Copilot]

Pull Request Overview

This pull request adds a stopwatch utility for measuring execution time and integrates it into the OpenAI sentence generator to improve observability and performance. The key changes include setting reasoning_effort to "minimal" for GPT-5 models and adding comprehensive logging of execution time.

Key Changes:

• Added stopwatch context manager and stopwatch_deco decorator for timing code execution with flexible logging options
• Configured reasoning_effort="minimal" for GPT-5 models to reduce generation time from ~27s to ~2s
• Integrated stopwatch into the OpenAI sentence generator's generate method to log execution time at DEBUG level

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
simple_typing_application/utils/stopwatch.py	New utility providing context manager and decorator for measuring and logging execution time with customizable log levels and messages
simple_typing_application/sentence_generator/openai_sentence_generator.py	Added reasoning_effort parameter for GPT-5 models and wrapped agent invocation with stopwatch for performance monitoring
tests/utils/test_stopwatch.py	Comprehensive test coverage for stopwatch functionality including context manager, decorator, custom options, and error handling

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[Copilot]

Pull Request Overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated no new comments.

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