docs: fix formatting error in README license section

docs: rewrite and improve README content for clarity and professional tone

Merge pull request #4 from fajarhide/fix/invalid-model

chore: ignore heimsense binary patterns in .gitignore

feat: implement dynamic model mapping for Claude background models via configuration overrides

Merge pull request #3 from fajarhide/fix/docker

chore: upgrade Go to 1.25 and improve versioning via VCS metadata and build flags

Merge pull request #2 from fajarhide/fix/setup-simply

chore: upgrade Go version to 1.25, update gitignore rules, and add dummy test for coverage reporting

refactor: simplify project structure and add automated setup logic

Merge pull request #1 from fajarhide/fix/setup

docs: remove emoji icons from mermaid architecture diagram in README

docs: update README with refreshed project description and architecture diagram

docs: update README with project philosophy, feature comparisons, and usage guidance

test: add comprehensive unit tests for Anthropic-to-OpenAI request and response transformations