docs: update changelog for 0.3.0 and 0.4.0

feat: add NIM backend with Anthropic-to-OpenAI translation proxy

feat: add role model support for Ollama backend

ci: add workflow_dispatch to publish

chore: trigger release

feat: add Ollama backend support

fix: replace Bun APIs with Node.js equivalents for npm compatibility

docs: add pnpm/yarn/bun install options

chore: release 0.1.0

ci: use node 22 LTS

ci: add --tag beta for prerelease versions

ci: upgrade npm for OIDC trusted publishing

ci: use NPM_TOKEN for publish

chore: bump to beta.9

ci: add npm environment for trusted publishing