[kashishhora]

Summary

If an app installs Google's webmcp-types next to webmcp-react, the two global Document.modelContext declarations clash. Theirs is readonly with a different type. With skipLibCheck off you get TS2687/TS2717. With it on, TypeScript silently uses whichever declaration it reads first.

Fixing that properly means dropping our global, which breaks anyone typing document.modelContext through us. So for now this just documents it:

• docs/api.md: new "TypeScript and webmcp-types" section covering what happens and the workaround (a .d.ts with the reference directive listed first in include)
• README: short TypeScript note pointing there
• CHANGELOG: deprecates the global and says it goes away in 2.0.0

Heads up: #74 also adds an ## Unreleased heading to the changelog, so whichever lands second needs a quick merge.

Test Plan

• Checked each setup against webmcp-types 0.1.10 with tsc: skipLibCheck off errors, "types": ["webmcp-types"] gives ours, reference directive listed first in include gives theirs