Lint the scripts directory

`scripts` sat in oxlint's ignorePatterns since c94c30e, grouped with
dist, coverage and .pnpm-store. Those are build artifacts; scripts holds
the quality gates themselves, which went unlinted as a result.

Removing it raises coverage from 265 to 273 files and surfaced four
findings:

prefer-regexp-exec in three files — swapped String#match for RegExp#exec.
All three patterns are non-global, where the two methods return the same
result, so behaviour is unchanged.

require-array-sort-compare in generate-bestiary-index.mjs — the rule
skips string arrays, and fired only because `new Set()` infers Set<any>.
Typed it Set<string>, which it already is, rather than adding a
comparator the bare sort does not need.

Also anchors the lint-gate probe's no-console canary to CLI scripts that
exist to write to the console, rather than to app error paths that could
reasonably be removed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

.oxlintrc.json

@@ -22,7 +22,6 @@
 		".claude",
 		".specify",
 		"specs",
-		".pnpm-store",
-		"scripts"
+		".pnpm-store"
 	]
 }