Add inline button mode, session footer, and remove "Thinking" indicator

[polik3jansaya]

Task

Please implement the following improvements:

Replace bottom buttons with inline buttons
Currently, the buttons at the bottom are obstructive. Please switch to inline keyboard buttons instead.

Add a footer to every final message
At the end of each final message, append the following session information:

text

Agent: 🛠️ Build
Model: 🤖 opencode/deepseek-v4-flash-free
Context: 59K / 200K (29%)
Current session: New session - 2026-05-28T04:56:58.487Z
Remove the "Thinking" indicator/message
Please remove or hide the "Думаю" (Thinking) message that appears during processing.

[polik3jansaya]

[polik3jansaya]

and add autorefresh free models in opencode when call command /models

[earn-devison]

add auto notification when bot is work