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Maximilian Roos 6613ffcd90 Add fish syntax highlighting, delta diffs, and website-matched demo theme (#1768)
Three improvements to demo GIF recordings:

- **Fish syntax highlighting** — commands render in amber matching the
website's `.cmd` accent. Params/args use the default foreground.
Starship prompt uses craft-brown (`#8b7355`) to differentiate from
commands. Two delivery mechanisms: `fish_variables` for
`--shell`/`--snapshot` mode, `colors.fish` sourced in VHS hidden section
(VHS applies `Env HOME` after fish starts).
- **Delta diff viewer** — `GIT_PAGER` set per-theme (`delta
--paging=never --light` for light, `delta --paging=never` for dark).
Empty for text/snapshot recordings.
- **Light theme aligned to website** — terminal colors updated to match
`_variables.html`. Cyan and green desaturated to avoid garish bold
rendering.

Also: build script accepts multiple targets (`./build docs social`),
kills stale Zellij processes before recording, and requires delta only
for GIF mode.

> _This was written by Claude Code on behalf of maximilian_

Co-authored-by: Claude <noreply@anthropic.com>
2026-03-27 00:41:07 -07:00
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