Add Cloud Agent development environment (Android SDK + marketing site)

[ThyFriendlyFox]

What & why

This branch now carries three things.

1. Cloud Agent development environment

So the repo is usable out of the box in Cloud Agents. The iOS app (swift/) is macOS/Xcode-only (CI builds it on macos-15) and can't build on the Linux VM; the Linux-buildable/runnable surfaces are the Android app (kotlin/) and the marketing site (site/). The default image already provides JDK 21, Node 22, and Python 3.12 — the only missing toolchain is the Android SDK, which the install script provisions.

• .cursor/environment.json — default base image; install runs the bootstrap; a site terminal serves the landing page on port 8765.
• .cursor/install.sh — idempotent: installs Android cmdline-tools + platform-tools, platforms;android-35, build-tools;35.0.0 into ~/android-sdk, accepts licenses, writes gitignored kotlin/local.properties, and primes ./gradlew assembleDebug.

2. Hero dither driven by app screens

The hero "dither boids" flock assembles from three app screens (site/assets/app-history.png, app-vite.png, app-ruby.png) rendered in the app's own visual language (black containers, IBM Plex Mono).

3. Marketing site redesign — cohesive dark, modern layout

Reworked site/ to match modern SaaS references (Expo / n8n / sleek.design) while keeping Mouse's IBM Plex Mono, monochrome, terminal-honest identity (no accent color, no reassurance microcopy):

• Fully dark theme end-to-end (was light with only a dark hero).
• Slim pill nav with centered links and a live GitHub star count (fetched client-side, falls back to a plain "GitHub" label offline).
• Headline-first hero: a rounded badge, a two-tone headline ("A real IDE, / built for a phone."), lede, two pill CTAs, and a spec strip (msh / node / git / zero deps) over the signature dither.
• Screenshot feature cards, a phone showcase, the gestures grid + law, the msh/node/git stack with numbered steps, FAQ, a glowing CTA band, and footer — all restyled as dark bordered cards with hover states and scroll reveals.

Gesture-law impact

None — environment tooling and marketing-site assets/markup only; no application or input-handling code changed.

Verified — function and feel

Environment:

• Android APK builds end-to-end on Linux (BUILD SUCCESSFUL, app-debug.apk, com.reagentsystems.mouse v0.1.3, targetSdk 35); install idempotent; a draft environment build ran the install from a clean checkout and a fresh Cloud Agent booted from it passed all checks.

Site redesign:

• Served locally and walked through in Chrome. Every section is dark and cohesive (no light sections), the hero flock forms the app screens and cycles, scroll-reveals are clean, the FAQ expands, and the nav shows the live star count. No overlaps, broken images, or layout breaks.

mouse_site_redesign_walkthrough.mp4
Redesigned dark hero with dither flock forming an app screen
Redesigned call-to-action band and footer

• Builds clean (xcodegen generate re-run if files were added/removed) — n/a (no Swift/source files changed)
• Feel-tested on a real device — n/a (environment tooling + static site)
• Screenshot/clip attached for visible changes
• Docs updated if behavior/look changed — n/a (site README structure unchanged)
• No diagnostics or demo scaffolding left in the merge

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