refactor(domain): consolidate canonical ordering and digest helpers (#624)

* refactor(domain): consolidate canonical ordering and digest helpers

Single owner for code-point ordering (domain/canonicalOrdering.ts)
and canonical JSON digests (domain/comparisonSemantics.ts). Delete
all local compareCodePoints/compareText/digestCanonical duplicates
and migrate every importer. No re-export shims.

* fix(ci): allow slower real browser startup

src/application/JavaScriptModuleRelationships.ts

@@ -1,5 +1,6 @@
 import { posix } from "node:path";
 
+import { compareCodePoints } from "../domain/canonicalOrdering.js";
 import type { ApplicationNode } from "../domain/javascriptApplicationGraph.js";
 import {
   completeApplicationCoverage,
@@ -409,6 +410,3 @@ const isExportLink = (link: JavaScriptSemanticModuleLink): boolean =>
   link.kind === "export" ||
   link.kind === "re-export" ||
   link.kind === "commonjs-export";
-
-const compareCodePoints = (left: string, right: string): number =>
-  left < right ? -1 : left > right ? 1 : 0;