docs: add JSDoc comments and improve documentation structure

- Add proper JSDoc header with GitHub URL and license info
- Update CLAUDE.md version management section
- Remove current version reference from CLAUDE.md (maintain in package.json only)
- Improve code documentation standards

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: efouts

CLAUDE.md

@@ -131,7 +131,6 @@ pnpm run test:all
 
 ## Version Management
 
-- **Current version:** 0.1.0
 - **Semantic versioning:** MAJOR.MINOR.PATCH
 - **Breaking changes:** Increment MAJOR
 - **New features:** Increment MINOR

src/context-status.js

@@ -7,7 +7,6 @@
  * context window usage as "Context: 125k" in Claude Code's status line.
  *
  * @see https://github.com/thisdot/claude-code-context-status-line for installation and usage
- * @version 0.1.0
  * @license MIT
  */