wiki: make TTY baseline the primary example, remove baseline config page
Restored Example-TTY-Baseline.md as the primary walkthrough.
Deleted Example-Baseline-Config.md.
Updated all references across the wiki from examples/config.lua
to examples/tty-baseline.lua.
Make imperative Lua style the default in wiki guides
- switch major config-writing and hooks docs to show imperative runtime
commands first
- document returned actions as an alternative style instead of the default
- add the imperative evil.spawn helper to the command-oriented docs
