That's a good summary.It still appears confusing what you actually want? Share backtest results? Share charts? What exactly do you look to share? And do you look to chart financial data? Or run backtests? Or execute trades on an automated trading system? You covered all the above in multiple posts but it does not appear clear, at least to me, what exactly it is that you want to do. If it is everything of the above the simple answer is : Such system does NOT exist off the shelf. So what are the tradeoffs and compromises you can make?
The answer goes back to the first post: I'll roll my own, which is *probably* where I'd end up anyway, so as to know each and every number/calculation/conclusion in intimate detail. Shortcuts would be fine, maybe even worthy of systemic adoption [!!]...... but only as long as they remain...short, right?

With the "discovery"
