Omarchy 4.0.1, foot 1.27.0, theme Flexoki Light.

## What happens

TUIs that ask the terminal for its color-theme mode render in dark mode on every light Omarchy theme, even though the terminal background is light. Observed with hunk (hunk.dev), which uses the contour color-scheme protocol (`CSI ?996n` query, mode 2031 for updates). foot 1.27 supports this protocol.

## Why

`default/themed/foot.ini.tpl` renders every theme's palette into the `[colors-dark]` section:

```ini
[colors-dark]
foreground={{ foreground_strip }}
background={{ background_strip }}
...
```

foot's convention (foot.ini(5), foot-ctlseqs(7)) is that `[colors-dark]` is the dark theme and `[colors-light]` is the light theme, and it answers `CSI ?996n` with `CSI ?997;1n` (dark) whenever the primary/dark theme is active. So with Flexoki Light the background is `FFFCF0` but foot still reports "dark" to applications.

The theme already declares its mode: `colors.toml` has `mode = "light"`. The template just does not use it.

## Suggested fix

When `mode = "light"`, render the palette into `[colors-light]` instead and set `initial-color-theme=light` in the generated include (or have the default `foot.ini` set it). Then foot reports `CSI ?997;2n` and 996/2031-aware TUIs pick the right mode.

## Repro

1. `omarchy theme set flexoki-light` (or any theme with `mode = "light"`).
2. In foot, run a 996-aware TUI, e.g. `hunk diff`.
3. It renders dark. `printf '\033[?996n'` shows foot replying `?997;1n` (dark).