operator! walkthrough and vscode further adjustments

[untra]

Operator! PR

More docs word adjustments
move images around for structural reasons, host .svg logo
add a walkthrough to the vscode extension
bugfixes and safety when commands are too long for tmux
command wrapper emulates ralph-code (maybe not desireable)
vscode extension publishes on merge to main

Type of change

• Docs update (changes to the readme or a site page, no code changes)
• Ops wrangling (automation or test improvements)
• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Sweet release (needs a lot of work and effort)
• Something else (explain please)

Checklists

• If modifying code, at least one test has been added to the suite