I've been thinking about this for a while now. Please check out my web app to solve this problem: https://www.purplerails.com/ The main idea is to use a browser extension to automatically save pages that you read to the cloud (including the images, stylesheets etc) in the background. Saved pages are searchable and sharable.
I tried giving purplerails a shot. I use LastPass for password management, and I am not going to type in a 25/30 character password every single time I want to log into an application. I think you're going way too hard on that part. This is the first time I've had this happen to me when using a web app, and it immediately made me close the page.
With PurpleRails, you will rarely be typing your password once you successfully login. It works kinda like Gmail/Facebook etc: you remain logged in for months at a time.
This page explains why password saving doesn't work yet: https://www.purplerails.com/blog/saving-passwords-why-we-hav...
I'll see if I can do something fancier than what I do now to allow saved passwords to work. I suspect that using a Javascript-based AJAX authentication system instead of a plain-old HTML form, I can achieve the privacy goals as well as ease of use.
I hope you will hang in there and use the current version until I figure out a way to fix this. Thanks!