[skills] Sync knowledge-update with current docs

[vercel-gh-bot-2]

• Stale claim: "Vercel MCP server: lets AI agents interact with Vercel deployments, logs, and projects. Beta on all plans." Correction: the Vercel MCP docs page no longer labels the product Beta; its availability banner now reads "Vercel MCP is available on all plans". Other pages keep the label, for example "Key Management Service (Beta) is available on all plans" and "Services (Beta) are available on all plans". The bullet now says "Available on all plans." and links the source. Source: https://vercel.com/docs/agent-resources/vercel-mcp (last_updated 2026-09-15). Quote: "Vercel MCP is available on all plans". The heading date moves to 2026-10-08 because this file changed.

Verification

run_plugin_checks passed every step: build (0 updated, 7 unchanged), typecheck, validate (PASSED, all checks OK), and test (1079 pass, 0 fail).

Test updates

tests/inject-claude-md.test.ts: the MCP status assertion and its source comment now expect Available on all plans. instead of Beta on all plans.. The quote it cited ("Vercel MCP is available in Beta on all plans") is no longer on the page.

Not changed

• Vercel Container Registry "Beta." and eve "Beta.": the test cites docs navigation labels for these, and the fetched page bodies (https://vercel.com/docs/container-registry, https://eve.dev/docs/getting-started) have no availability banner to confirm or contradict them.
• No GA changelog for Vercel MCP turned up, so the skill does not say "GA". It only drops the Beta label the page no longer shows.
• All other bullets checked this run still match the docs or shipped packages: Python 3.12 (default), 3.13, and 3.14; 5 GB Large Functions beta with VERCEL_SUPPORT_LARGE_FUNCTIONS=1; Global Config rename and the vercel global-config CLI command; Private Blob; Queues public beta; Services and KMS Beta; Vercel Agent public beta; WebSockets; AI SDK 7 on Node >=22; Workflow 5 on workflow@latest (5.1.0).

Opened automatically by the vercel-plugin drift agent. Review before merge.