Docs gaps surfaced by site search (no-result queries)

Site search logs show several frequent queries that return no useful result —
topics people expect in the docs but can't find. Capturing them here as
pages/topics to add or fix. (Numbers are total queries over the sample period.)

### Pages to add

- **Model Context Protocol (MCP)** — 34 queries, no page. Highest demand.
- **DOMParser / HTML parsing** — 30 queries (`DOMParser` + `domparser`). Not
built in; needs a how-to pointing at `deno-dom` / `linkedom` and explaining
why it isn't a global.
- **`denort`** — 19 queries. The runtime-only binary that `deno compile`
produces/uses is undocumented.
- **`tsgo`** — 13 queries. TypeScript's native compiler — at least a note on
where Deno stands on it.

### Existing content that isn't findable

- **`minimumDependencyAge`** — 40 queries (`minimumDependencyAge` +
`minimum-dependency-age`), no result. This is a real `deno.json` supply-chain
setting; document it in the `deno.json` reference and the dependency-management
guide.
- **Windows installation** — ~13 queries are the install command itself
(`irm https://deno.land/install.ps1 | iex`) and the Windows binary
(`deno-x86_64-pc-windows-msvc.zip`). The install / Windows content isn't
surfacing in search; worth checking headings/indexing.

### Popular features that may want clearer entry points

These do return results, but they're among the very top searches overall, so
they may deserve more prominent homes:

- **SQLite** (`sqlite`) and **Deno KV** (`kv`) — both in the top 10 queries.