docs: add package pages for parsers, lint, and studio-server

[miguel-heygen]

Summary

Adds documentation pages for the three packages extracted from @hyperframes/core in the recent refactor stack (#1755 parsers, #1756 lint, #1757 studio-server). They were merged but had no docs page, so they were missing from the Packages tab.

What's added

• docs/packages/parsers.mdx — @hyperframes/parsers: standalone GSAP + HTML parser/writer suite, subpath entries (/gsap-parser-acorn, /gsap-writer-acorn, /gsap-constants, /hf-ids, /spring-ease), HTML round-trip + GSAP AST mutation API.
• docs/packages/lint.mdx — @hyperframes/lint: the linter as a standalone library — lintProject(dir), lintHyperframeHtml, shouldBlockRender, and what it catches.
• docs/packages/studio-server.mdx — @hyperframes/studio-server: the mountable Hono preview/editor backend, createStudioApi(adapter) usage, helpers.

Nav + cross-links

• All three wired into the Packages nav group (docs/docs.json), placed right after @hyperframes/core since they're the extracted foundation.
• docs/packages/core.mdx updated: its GSAP-parsing and Linter sections now point at the dedicated packages (noting the @hyperframes/core/* back-compat stubs still resolve), and its Related Packages cards list all three.

Notes

• Every API symbol, export path, and type was verified against the merged package source.
• All internal doc links resolve to existing pages.
• Docs-only change.

[mintlify]

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Project	Status	Preview	Updated (UTC)
hyperframes	🔴 Failed	–	Jun 27, 2026, 4:18 PM

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