fix(onboarding): skip wizard if Hermes already configured

Closes #420:

static/boot.js

@@ -484,6 +484,12 @@ document.addEventListener('keydown',async e=>{
     if(!S.busy){await newSession();await renderSessionList();closeMobileSidebar();$('msg').focus();}
   }
   if(e.key==='Escape'){
+    // Close onboarding overlay if open (skip/dismiss the wizard)
+    const onboardingOverlay=$('onboardingOverlay');
+    if(onboardingOverlay&&onboardingOverlay.style.display!=='none'){
+      if(typeof skipOnboarding==='function') skipOnboarding();
+      return;
+    }
     // Close settings overlay if open
     const settingsOverlay=$('settingsOverlay');
     if(settingsOverlay&&settingsOverlay.style.display!=='none'){_closeSettingsPanel();return;}

static/index.html

@@ -391,6 +391,7 @@
         <div class="onboarding-body" id="onboardingBody"></div>
         <div class="onboarding-actions">
           <button class="sm-btn" id="onboardingBackBtn" onclick="prevOnboardingStep()" style="display:none" data-i18n="onboarding_back">Back</button>
+          <button class="sm-btn" id="onboardingSkipBtn" onclick="skipOnboarding()" style="margin-right:auto;opacity:.7" data-i18n="onboarding_skip">Skip setup</button>
           <button class="sm-btn" id="onboardingNextBtn" onclick="nextOnboardingStep()" style="font-weight:700;color:var(--blue);border-color:rgba(124,185,255,.32)" data-i18n="onboarding_continue">Continue</button>
         </div>
       </div>

static/onboarding.js

@@ -330,6 +330,18 @@ async function _finishOnboarding(){
   }
 }
 
+async function skipOnboarding(){
+  try{
+    // Mark onboarding completed server-side without changing any config
+    await api('/api/onboarding/complete',{method:'POST',body:'{}'});
+    ONBOARDING.active=false;
+    $('onboardingOverlay').style.display='none';
+    showToast(t('onboarding_skipped')||'Setup skipped');
+  }catch(e){
+    _setOnboardingNotice((e.message||String(e)),'warn');
+  }
+}
+
 async function nextOnboardingStep(){
   try{
     if(ONBOARDING.steps[ONBOARDING.step]==='setup'){