Fix README examples and JSDoc

[Shane98c]

• Correct README code examples (zarrita open call, new store options, URL translation details, HTTP repo caveats)
• Fix JSDoc examples in src/index.ts and src/store.ts to use store.resolve()
• Add integration test for the store.resolve() pattern shown in the README

[gemini-code-assist]

Code Review

This pull request updates the README to reflect that the library is pure TypeScript and works in Node.js 18+, while removing specific bundle size and dependency mentions. It also updates documentation and code examples to use the store.resolve() pattern for array access, introduces new IcechunkStore options (signal, validateChecksums, azureAccount), and clarifies cloud storage URL translation. Additionally, it adds a note on v1 repository limitations over HTTP, includes metadata in the history walk example, and adds a corresponding integration test. I have no feedback to provide.