feat(skills): add skill-porting library skill (#195)

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

packages/skills/test/skills.test.ts

@@ -111,6 +111,7 @@ describe("loadSkillGroups / groupSkills", () => {
       "vllm",
       "ollama",
       "llamafactory",
+      "skill-porting",
     ]);
     expect(groups[2]!.title).toBe("AI App Development");
     expect(groups[2]!.titleZh).toBe("AI 应用开发");
@@ -166,7 +167,15 @@ describe("loadSkillGroups / groupSkills", () => {
       { id: "software-development", skills: ["web-design", "software-engineering"] },
       {
         id: "ai-app-development",
-        skills: ["penguin-sdk", "penguin-cli", "agenthub-models", "vllm", "ollama", "llamafactory"],
+        skills: [
+          "penguin-sdk",
+          "penguin-cli",
+          "agenthub-models",
+          "vllm",
+          "ollama",
+          "llamafactory",
+          "skill-porting",
+        ],
       },
       {
         id: "agent-tuning",