fix(obsidian-kb): restore files and shorten description

skills/webhook-gen/src/index.ts

@@ -1,29 +0,0 @@
-import OpenAI from "openai";
-
-const openai = new OpenAI();
-
-export async function generateWebhook(eventDescription: string, framework: string = "express"): Promise<string> {
-  const response = await openai.chat.completions.create({
-    model: "gpt-4o-mini",
-    messages: [
-      {
-        role: "system",
-        content: `You generate production-ready webhook handler code.
-Rules:
-- Include signature verification
-- Add exponential backoff retry logic
-- Handle idempotency (dedup by event ID)
-- Proper error handling and logging
-- Type-safe where possible
-- Framework: ${framework}
-- Include both the handler and a retry utility
-- Return ONLY the code, no explanations`
-      },
-      { role: "user", content: `Generate a webhook handler for: ${eventDescription}` }
-    ],
-    temperature: 0.3,
-  });
-
-  const result = response.choices[0].message.content?.trim() || "";
-  return result.replace(/^```[\w]*\n?/, "").replace(/\n?```$/, "");
-}