Neon / portal template support (#713)

TODOs:
- [x] Do restart when checkout / restore if there is a DB
- [x] List all branches (branch id, name, date)
- [x] Allow checking out versions with no DB
- [x] safeguard to never delete main branches
- [x] create app hook for neon template
- [x] weird UX with connector on configure panel
- [x] tiny neon logo in connector
- [x] deploy to vercel
- [x] build forgot password page
- [x] what about email setup
- [x] lots of imgix errors
- [x] edit file - db snapshot
- [x] DYAD_DISABLE_DB_PUSH
- [ ] update portal doc
- [x] switch preview branch to be read-only endpoint
- [x] disable supabase sys prompt if neon is enabled
- [ ] https://payloadcms.com/docs/upload/storage-adapters
- [x] need to use main branch...

Phase 2?
- [x] generate DB migrations

src/components/chat/ChatHeader.tsx

@@ -120,15 +120,26 @@ export function ChatHeader({
                     <Tooltip>
                       <TooltipTrigger asChild>
                         <span className="flex items-center  gap-1">
-                          <strong>Warning:</strong>
-                          <span>You are not on a branch</span>
-                          <Info size={14} />
+                          {isAnyCheckoutVersionInProgress ? (
+                            <>
+                              <span>
+                                Please wait, switching back to latest version...
+                              </span>
+                            </>
+                          ) : (
+                            <>
+                              <strong>Warning:</strong>
+                              <span>You are not on a branch</span>
+                              <Info size={14} />
+                            </>
+                          )}
                         </span>
                       </TooltipTrigger>
                       <TooltipContent>
                         <p>
-                          Checkout main branch, otherwise changes will not be
-                          saved properly
+                          {isAnyCheckoutVersionInProgress
+                            ? "Version checkout is currently in progress"
+                            : "Checkout main branch, otherwise changes will not be saved properly"}
                         </p>
                       </TooltipContent>
                     </Tooltip>
@@ -152,7 +163,7 @@ export function ChatHeader({
             >
               {isRenamingBranch ? "Renaming..." : "Rename master to main"}
             </Button>
-          ) : (
+          ) : isAnyCheckoutVersionInProgress && !isCheckingOutVersion ? null : (
             <Button
               variant="outline"
               size="sm"