fix(multi): header logo dark + Manager login JSON + Jenkinsfile manual exclude

Header.jsx:
- logo: zioinfo-logo.png -> zioinfo-logo-dark.png (dark header background)

GuardiaDetail.jsx:
- 12 features (RPA, scraping, DR, CSAP, NL commands added)
- 44 bot commands (vs 19 before)
- Tech stack: Vector DB section added

Jenkinsfile (root + zioinfo-web):
- sparse checkout: exclude manual/ from Jenkins build
- only frontend/ and backend/ checked out

Manager useAuth.ts:
- login: form-encoded -> JSON (ITSM accepts JSON only)

Manuals:
- 41_zio서버_DB_연결정보.md
- 42_zio서버_소프트웨어_구성도.md

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/components/layout/Header.jsx

@@ -105,8 +105,8 @@ export default function Header() {
         <div className="header-inner container">
           {/* 로고 */}
           <Link to="/" className="logo" aria-label="(주)지오정보기술 홈으로">
-            <img src="/zioinfo-logo.png" alt="(주)지오정보기술 로고" height="40"
-                 onError={e => { e.target.src='/ziologo.png'; e.target.onerror = () => { e.target.style.display='none'; e.target.nextSibling.style.display='flex'; }; }} />
+            <img src="/zioinfo-logo-dark.png" alt="(주)지오정보기술 로고" height="40"
+                 onError={e => { e.target.src='/zioinfo-logo.png'; e.target.onerror = () => { e.target.style.display='none'; e.target.nextSibling.style.display='flex'; }; }} />
             <span className="logo-text" style={{display:'none'}}>
               <strong>Zio</strong>Info
             </span>