Fix detection of shiki@^1.29.2:

Author: ndbroadbent

src/extractors/__tests__/fixtures/yarn.lock

@@ -1,11 +1,19 @@
 "package-a@^1.0.0":
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/package-a/-/package-a-1.0.0.tgz"
+  integrity sha512-example123456789
 
 "@scope/package-b@^2.0.0":
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/@scope/package-b/-/package-b-2.0.0.tgz"
+  integrity sha512-example123456789
 
 "@cspell/dict-monkeyc@^1.0.10":
   version "1.0.10"
-  resolved "https://registry.yarnpkg.com/@cspell/dict-monkeyc/-/dict-monkeyc-1.0.10.tgz" 
+  resolved "https://registry.yarnpkg.com/@cspell/dict-monkeyc/-/dict-monkeyc-1.0.10.tgz"
+  integrity sha512-example123456789
+
+shiki@^1.29.2:
+  version "1.29.2"
+  resolved "https://registry.yarnpkg.com/shiki/-/shiki-1.29.2.tgz"
+  integrity sha512-example123456789

src/extractors/__tests__/yarn.test.ts

@@ -14,6 +14,7 @@ describe('Yarn Extractors', () => {
       expect(words).toContain('package-a')
       expect(words).toContain('scope')
       expect(words).toContain('package-b')
+      expect(words).toContain('shiki')
 
       // Test for @cspell/dict-monkeyc
       expect(words).toContain('cspell')
@@ -23,5 +24,14 @@ describe('Yarn Extractors', () => {
 
       verifyWords(words)
     })
+
+    it('should extract package names from package specifications with colons', () => {
+      const content =
+        'shiki@^1.29.2:\n  version "1.29.2"\n  resolved "https://registry.yarnpkg.com/shiki/-/shiki-1.29.2.tgz"'
+      const words = extractFromYarnLock(content)
+
+      expect(words).toContain('shiki')
+      verifyWords(words)
+    })
   })
 })

src/extractors/yarn.ts

@@ -6,8 +6,11 @@
 export function extractFromYarnLock(content: string): string[] {
   const words = new Set<string>()
 
-  // Extract package names
-  const packageNameRegex = /^"?([^@"]+)@|^"?(@[^/]+\/[^@"]+)@/gm
+  // Simple regex to match package names in yarn.lock
+  // Handles quoted ("package@") and unquoted (package@) formats
+  const packageNameRegex =
+    /^(?:"?([@a-zA-Z0-9_-]+(?:\/[a-zA-Z0-9_-]+)?)@|([a-zA-Z0-9_-]+)@)/gm
+
   let match
   while ((match = packageNameRegex.exec(content)) !== null) {
     const packageName = (match[1] || match[2]).trim()