chore(config): remove dead eslint, dedupe scripts, cacheable turbo tasks (#625)

* 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

* chore(config): remove dead eslint, dedupe scripts, cacheable turbo tasks

Delete eslint.config.js (oxlint is the linter), drop lint:dead alias,
pin smol-toml, fold jscpd/scan:todos into check:pr, make test:run
cacheable, align oxlint ignores.

* fix(config): hash all test inputs for cached runs

.oxlintrc.json

@@ -120,5 +120,16 @@
     "node": true,
     "es2023": true
   },
-  "ignorePatterns": ["dist", "node_modules", "docs/api", ".codex", ".devin"]
+  "ignorePatterns": [
+    "dist",
+    "build",
+    "node_modules",
+    "docs/api",
+    "coverage",
+    ".turbo",
+    ".cache",
+    ".codex",
+    ".devin",
+    ".factory"
+  ]
 }