Merge pull request #22 from smaniches/claude/fix-api-compatibility-y1GEP

fix: skip live API tests without SEMANTIC_SCHOLAR_API_KEY

fix: prevent api-compat CI rate limiting with sequential jobs and retries

fix: update existing test to expect Bearer auth instead of x-api-key

fix: add 429 retry and increase rate limit delay for CI

fix: lint errors and invalid author test ID

fix: Bearer auth, remove unsupported S2 API fields, add API compat tests

fix: add s2-mcp-server entry point so uvx s2-mcp-server works

fix: rename PyPI package to s2-mcp-server

Merge pull request #20 from smaniches/claude/zero-debt-and-distribution

chore: update server.json to official MCP registry schema

refactor: zero technical debt, Smithery registry, and installation docs

Merge pull request #13 from smaniches/claude/structured-errors-and-caching

Merge pull request #12 from smaniches/claude/ci-release-automation

feat: add structured error responses (isError=True) and TTL cache