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/domain/javascriptSemanticQueryAssessment.ts

@@ -1,4 +1,4 @@
-import { compareCodePoints } from "./javascriptApplicationGraph.js";
+import { uniqueSorted } from "./canonicalOrdering.js";
 import type { JavaScriptSemanticGraph } from "./javascriptSemanticGraph.js";
 import type { JavaScriptSemanticGraphUnknown } from "./javascriptSemanticGraphSchemas.js";
 import type { JavaScriptSemanticQueryResult } from "./javascriptSemanticQuerySchemas.js";
@@ -77,6 +77,3 @@ const queryLimitations = (
           "Candidate relations remain ambiguous and do not establish a resolved semantic path.",
         ]),
   ]);
-
-const uniqueSorted = (values: readonly string[]): string[] =>
-  [...new Set(values)].sort(compareCodePoints);