fix(skills): remove phantom resource references and fix CoC links (#447)

Remove references to non-existent resource files (references/, assets/,
scripts/, examples/) from 115 skill SKILL.md files. These sections
pointed to directories and files that were never created, causing
confusion when users install skills.

Also fix broken Code of Conduct links in issue templates to use
absolute GitHub URLs instead of relative paths that 404.

plugins/javascript-typescript/skills/javascript-testing-patterns/SKILL.md

@@ -1012,10 +1012,3 @@ it("should call function after delay", () => {
   vi.useRealTimers();
 });
 ```
-
-## Resources
-
-- **Jest Documentation**: https://jestjs.io/
-- **Vitest Documentation**: https://vitest.dev/
-- **Testing Library**: https://testing-library.com/
-- **Kent C. Dodds Testing Blog**: https://kentcdodds.com/blog/

plugins/javascript-typescript/skills/modern-javascript-patterns/SKILL.md

@@ -917,11 +917,3 @@ const first = doubled.next().value; // Only computes first value
 6. **Blocking event loop**: Avoid synchronous operations
 7. **Memory leaks**: Clean up event listeners and timers
 8. **Not handling promise rejections**: Use catch() or try/catch
-
-## Resources
-
-- **MDN Web Docs**: https://developer.mozilla.org/en-US/docs/Web/JavaScript
-- **JavaScript.info**: https://javascript.info/
-- **You Don't Know JS**: https://github.com/getify/You-Dont-Know-JS
-- **Eloquent JavaScript**: https://eloquentjavascript.net/
-- **ES6 Features**: http://es6-features.org/

plugins/javascript-typescript/skills/nodejs-backend-patterns/SKILL.md

@@ -1039,10 +1039,3 @@ export class ApiResponse {
 ## Testing Patterns
 
 See `javascript-testing-patterns` skill for comprehensive testing guidance.
-
-## Resources
-
-- **Node.js Best Practices**: https://github.com/goldbergyoni/nodebestpractices
-- **Express.js Guide**: https://expressjs.com/en/guide/
-- **Fastify Documentation**: https://www.fastify.io/docs/
-- **TypeScript Node Starter**: https://github.com/microsoft/TypeScript-Node-Starter

plugins/javascript-typescript/skills/typescript-advanced-types/SKILL.md

@@ -715,10 +715,3 @@ type ShouldError = ExpectError<AssertEqual<string, number>>;
 - Cache complex type computations
 - Limit recursion depth in recursive types
 - Use build tools to skip type checking in production
-
-## Resources
-
-- **TypeScript Handbook**: https://www.typescriptlang.org/docs/handbook/
-- **Type Challenges**: https://github.com/type-challenges/type-challenges
-- **TypeScript Deep Dive**: https://basarat.gitbook.io/typescript/
-- **Effective TypeScript**: Book by Dan Vanderkam