`ReadMcpResourceExecResult` has a `rejected` variant carrying `reason`,
not `error`, so the pairing text's collapsed error branch did not
typecheck against the full union. Each variant is now switched
explicitly; the refusal is unreachable today (the handler answers
content or `null`) but a collapsed default would have read `undefined`
if the client ever builds one.
`bun check` type-checks the workspace projects; the union error only
surfaced through `ci:check:full`, which is what CI runs.
Also renames a loop variable that shadowed the global `escape`, which
was failing `biome check` on the full tree.
(cherry picked from commit f5dca418d91983a14492f51f2873514781a9e066)
Diogo Soares Rodrigues
d9bc1e80b6