📦 Update project dependencies and configuration files

Analysis:
1. The .gitignore file was modified to add build/ and *.egg-info/ entries, indicating new build artifact exclusions.
2. The pyproject.toml file was updated with new uv tool configuration, suggesting a switch to uv for package management.
3. The uv.lock file shows significant changes with multiple new package additions including openai, pydantic, httpx, and others, indicating a major dependency update.
4. New untracked files (.python-version and README.md) were added to the local-api-test project directory.

This commit represents a substantial update to the project's dependency management system and introduces several new packages, primarily for AI/HTTP functionality, while also updating project configuration files.

projects/local-api-test/.python-version

@@ -0,0 +1 @@
+3.12

projects/local-api-test/README.md

@@ -0,0 +1,7 @@
+
+
+```shell
+uv run main.py
+```
+
+

projects/local-api-test/pyproject.toml

@@ -1,3 +1,7 @@
+[tool.uv]
+venv-path = ".venv"
+python-preference = "only-managed"
+
 [project]
 name = "local-ai-test"
 version = "0.1.0"