docs: refresh examples and docs; add CLAUDE.md; update images; cleanup README and CHANGELOG

[IBJunior]

Summary

• Refresh examples and docs
• Add CLAUDE.md
• Update images for strategies
• Cleanup README and CHANGELOG

Details

• examples: update LangChain compress history doc; remove outdated LANGCHAIN_EXAMPLE.md; improve OpenAI example
• docs: add new trimming/summarization images in docs/images
• README: general cleanup and clarity improvements
• CHANGELOG: update with latest changes
• New: add CLAUDE.md with usage notes

Checklist

• Builds and tests pass locally
• No runtime changes
• Docs-only PR

Base: main
Head: feat/update-examples

[Copilot]

Pull Request Overview

This PR focuses on documentation and examples improvements without any runtime code changes. It enhances the developer experience by adding visual documentation, consolidating examples, and providing clearer usage guidance.

Key changes:

• Add visual strategy diagrams and consolidated LangChain examples
• Create Claude Code guidance documentation
• Update version and changelog for documentation improvements

Reviewed Changes

Copilot reviewed 7 out of 9 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
package.json	Version bump to 2.1.2 for documentation release
examples/OPENAI_EXAMPLE.md	Enhanced with more comprehensive example and clearer workflow
examples/LANGCHAIN_EXAMPLE.md	Removed outdated standalone LangChain example
examples/LANGCHAIN_COMPRESS_HISTORY.md	Improved with better examples and output samples
README.md	Added visual strategy section and consolidated example references
CLAUDE.md	New developer guidance document for Claude Code users
CHANGELOG.md	Updated with 2.1.2 release notes

Comments suppressed due to low confidence (1)

examples/LANGCHAIN_COMPRESS_HISTORY.md:1

• The model name gpt-5-mini refers to a version that does not exist. OpenAI's current naming convention uses models like gpt-4o-mini. Consider using an existing model name.

# LangChain one-call history compression