Adds MCP 2026-07-28 discovery and browser routing headers, public cache hints for stable catalogs and documentation, and output schemas for all 100 hosted tools. Upstream OpenAPI resources retain private, zero-TTL cache hints.
Updates the public tool catalog revision to 2026-09-09.mcp-spec-features and production smoke-test version expectations.
Validation: 413 tests passed, TypeScript build, ESLint, and Wrangler bundle dry run passed. Production deployment succeeded. Live verification passed for modern discovery, all 100 output schemas, catalog/document cache hints, and browser routing headers. The full production smoke test passed across all eight protocol endpoints after correcting its pre-existing catalog list (#23).
Implemented in #22. This release is for the hosted MCP server only; wallet changes are deferred to its next release.