initial landing scaffold (hyperhive/website MVP)

Tracks hyperhive#502 — landing-only first cut. Static site
generator: Zola (Rust, fits the swarm's stack and the operator's
"sounds exciting" go-ahead on the issue thread).

## Structure

- `flake.nix` — `nix build .#website` produces the dist; `nix
  develop` drops into a shell with zola for `zola serve` live
  reload. No CI runner; the flake is the validation contract.
- `config.toml` — Zola config; base URL `hyperhive.darkest.space`
  per #502. Single-page landing — feeds / search index off.
- `content/_index.md` — landing copy. Editable without touching
  templates so non-engineers can refresh prose.
- `templates/base.html` + `templates/index.html` — base layout +
  landing-specific extension. og:tags + favicon wired through.
- `sass/main.scss` — theme. Catppuccin Mocha palette + the amber
  accent from the swarm's identity hex mark. Self-contained
  (no @import) so the file is reviewable in one place.
- `static/{favicon,hex-mark,hyperhive}.svg` — copies of the
  dashboard's `branding/hyperhive.svg` (hex motif). Used as
  favicon, hero inline, and og:image respectively.

## Theme

Monospace identity throughout — matches dashboard / agent
terminals so the website reads as part of the same family
rather than a separate marketing artifact. Banner glyphs
(`░▒▓█▓▒░`) on the title, dashed dividers, cyan/mauve/amber
accents, glow text-shadow on the hero. Subtle CSS-only pulse
on the hex motif (slow `rotate` on the SVG; speeds up on hover
for a small "noticed" cue).

## Three-column "what's inside"

`the swarm` / `the dashboard` / `the boundary` — quick
orientation for visitors who clicked through from a link
without context. Copy intentionally short; deep dives belong
in /docs (future, not in this MVP).

## Scope drop

Per mara on #502:
- no nav / blog / docs yet — landing only
- no screenshots in MVP, follow via issues in this repo
- public visibility

## Provenance

Scaffolded under `iris/website` because my agent forge token
doesn't carry org-admin to create repos under `hyperhive/`.
Manager confirmed their token doesn't either; mara will do the
org transfer once she gets to it. README documents this.

.gitignore

@@ -0,0 +1,12 @@
+# Zola build output
+public/
+
+# nix
+result
+result-*
+
+# editor / OS
+.direnv/
+*.swp
+*.swo
+.DS_Store