Add better descriptions to tools and fields

[RadCod3]

No description provided.

[Copilot]

Pull Request Overview

This PR enhances the user experience by adding comprehensive descriptions to tool functions and model fields throughout the Lampyrid codebase. The changes focus on making the API more self-documenting and user-friendly.

• Replaces brief docstrings with detailed, contextual descriptions for all tool functions
• Adds descriptive field descriptions to all model classes with clear usage guidance
• Improves parameter documentation with practical examples and constraints

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/lampyrid/server.py	Updates tool function docstrings with detailed descriptions explaining purpose, use cases, and context
src/lampyrid/models/lampyrid_models.py	Adds comprehensive field descriptions to all model classes with usage examples and constraints

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