Hand-convert ~5 defined terms in token-format.md to native Bikeshed autolinks

Part of #1006.

As a representative authoring-cost demo, convert ~5 bolded defined terms in `token-format.md` — e.g. **token**, **name object**, **field catalog**, **resolved value**, **alias** — to `term` definitions at their canonical definition sites and `[=term=]` use-sites elsewhere.

This produces the concrete data point for decision criterion #3 (authoring tax): how much extra markup vs. plain bold, and whether the autolinking payoff is worth it.

Start in token-format.md by locating the canonical definitions and other uses of the five example terms: token, name object, field catalog, resolved value, and alias. Convert those occurrences to the requested Bikeshed definition and autolink forms, then verify that all five terms are covered and the resulting markup can support the authoring-cost comparison.

Written by the indexing model from the issue text.