✨ Add primitive union pattern matchers

Curried matchers over string|number literal unions in four variants
(exhaustive/partial x strict/widened return inference), per the header
matrix in src/primitive.ts.

- Adds type-fest for Simplify/ValueOf.
- Deliberate oxlint escape hatches (as any dispatch) until a cast-free
  formulation lands; see the file comments.

package-lock.json

@@ -8,6 +8,9 @@
             "name": "tiny-pattern-ts",
             "version": "0.1.8",
             "license": "MIT",
+            "dependencies": {
+                "type-fest": "^5.9.0"
+            },
             "devDependencies": {
                 "@arethetypeswrong/cli": "^0.18.5",
                 "@runwisp/pubv": "^1.5.1",
@@ -4622,6 +4625,18 @@
                 "url": "https://github.com/chalk/supports-hyperlinks?sponsor=1"
             }
         },
+        "node_modules/tagged-tag": {
+            "version": "1.0.0",
+            "resolved": "https://registry.npmjs.org/tagged-tag/-/tagged-tag-1.0.0.tgz",
+            "integrity": "sha512-yEFYrVhod+hdNyx7g5Bnkkb0G6si8HJurOoOEgC8B/O0uXLHlaey/65KRv6cuWBNhBgHKAROVpc7QyYqE5gFng==",
+            "license": "MIT",
+            "engines": {
+                "node": ">=20"
+            },
+            "funding": {
+                "url": "https://github.com/sponsors/sindresorhus"
+            }
+        },
         "node_modules/test-exclude": {
             "version": "8.0.0",
             "resolved": "https://registry.npmjs.org/test-exclude/-/test-exclude-8.0.0.tgz",
@@ -4705,6 +4720,21 @@
             "license": "0BSD",
             "optional": true
         },
+        "node_modules/type-fest": {
+            "version": "5.9.0",
+            "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-5.9.0.tgz",
+            "integrity": "sha512-yANm3Jr3GiJ1qgJlxGAVxTOIcEOk1rhQHamlXtnrCK7EHP4HeM9OGxtMg/W7HFdrVzw/ZWJKGVIJusVH85sLtw==",
+            "license": "(MIT OR CC0-1.0)",
+            "dependencies": {
+                "tagged-tag": "^1.0.0"
+            },
+            "engines": {
+                "node": ">=20"
+            },
+            "funding": {
+                "url": "https://github.com/sponsors/sindresorhus"
+            }
+        },
         "node_modules/typescript": {
             "version": "7.0.2",
             "resolved": "https://registry.npmjs.org/typescript/-/typescript-7.0.2.tgz",