Update Tools page with iOS home screen instructions, add PWA FAQ entry

frontend/components/FAQ.tsx

···
               Social PBC.
             </p>
           </div>
+
+          <div>
+            <h3 className="text-xl font-bold text-gray-800 mb-2">
+              Can I install kipclip as an app on my phone?
+            </h3>
+            <p className="text-gray-700">
+              Yes! kipclip works as a Progressive Web App (PWA) on both Android
+              and iOS. On Android, you can add it to your home screen and it
+              will appear in your share menu, letting you save bookmarks
+              directly from any app. On iOS, you can add it to your home screen
+              and use the iOS Shortcut to save from Safari. See the{" "}
+              <a href="/tools" className="underline hover:text-gray-800">
+                Tools page
+              </a>{" "}
+              for detailed installation instructions.
+            </p>
+          </div>
         </section>
 
         <section className="bg-white rounded-lg shadow-md p-6">

frontend/components/Tools.tsx

···
 
             <div className="bg-gray-50 rounded-lg p-4">
               <h4 className="font-semibold text-gray-800 mb-2">
+                iOS (Add to Home Screen):
+              </h4>
+              <ol className="space-y-2 text-sm text-gray-700">
+                <li className="flex items-start gap-2">
+                  <span className="font-bold text-coral min-w-[20px]">1.</span>
+                  <span>Open kipclip.com in Safari</span>
+                </li>
+                <li className="flex items-start gap-2">
+                  <span className="font-bold text-coral min-w-[20px]">2.</span>
+                  <span>
+                    Tap the Share button (square with arrow), then "Add to Home
+                    Screen"
+                  </span>
+                </li>
+                <li className="flex items-start gap-2">
+                  <span className="font-bold text-coral min-w-[20px]">3.</span>
+                  <span>
+                    kipclip opens as a standalone app - use the iOS Shortcut
+                    above to save bookmarks from Safari
+                  </span>
+                </li>
+              </ol>
+            </div>
+
+            <div className="bg-gray-50 rounded-lg p-4">
+              <h4 className="font-semibold text-gray-800 mb-2">
                 Android (Chrome):
               </h4>
               <ol className="space-y-2 text-sm text-gray-700">
···
                 <li className="flex items-start gap-2">
                   <span className="font-bold text-coral min-w-[20px]">2.</span>
                   <span>
-                    Tap the menu (⋮), then "Add to Home screen"
+                    Tap the menu (⋮), then "Add to Home screen" or "Install app"
                   </span>
                 </li>
                 <li className="flex items-start gap-2">
                   <span className="font-bold text-coral min-w-[20px]">3.</span>
                   <span>
-                    When sharing URLs from other apps, kipclip will appear as a
-                    share target
+                    kipclip opens as a standalone app and appears in your share
+                    menu - share URLs directly from any app
                   </span>
                 </li>
               </ol>