docs: update README + docs site for public readiness

Refresh the README and documentation for public visitors:

- README: public-facing rewrite with accurate status for all four native
  clients (macOS, Linux, Windows, Android) and the Windows host.
- docs site: fix stale client status (Android is a full client, not a
  scaffold; Windows client is stage-1 complete + signed MSIX), add the
  missing Android client section, correct "which client" guidance.
- Windows host: corrected from "deferred/scoped" to implemented & shipping
  (NVIDIA-only, x64-only) across windows-host, roadmap, status,
  requirements, running-as-a-service, and the README.
- Remove internal infrastructure from public docs (box names, private IPs,
  SSH/token commands, deploy topology); rewrite status.md as a public
  project-status page; sanitize ci.md and implementation-plan.md.
- Update clients/android and clients/apple READMEs to current state.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

docs-site/content/docs/requirements.md

@@ -5,8 +5,9 @@ description: What you need to run a punktfunk host — GPU, driver, desktop, and
 
 ## Supported setups
 
-A punktfunk host runs on a Linux machine with an NVIDIA GPU. These are the desktop environments it
-supports today, each with its own guide:
+A punktfunk host runs primarily on a Linux machine with an NVIDIA GPU (a native
+[Windows host](/docs/windows-host) is also available — see below). These are the Linux desktop
+environments it supports today, each with its own guide:
 
 | Setup | Desktop / compositor | Guide |
 |---|---|---|
@@ -18,6 +19,10 @@ supports today, each with its own guide:
 Other wlroots compositors (Sway/Hyprland) also work but aren't a primary target. If your desktop isn't
 listed, the host still needs one of these compositor backends to create a virtual display.
 
+> **Windows host:** punktfunk also runs as a native host on **Windows 10/11 (x64) with an NVIDIA GPU**
+> — a signed installer that registers a service and bundles a virtual-display driver. It's NVIDIA-only
+> and newer than the Linux host; see [Windows Host](/docs/windows-host).
+
 ## GPU and driver
 
 - **An NVIDIA GPU** with NVENC — effectively any GeForce RTX or workstation card. NVENC is what
@@ -54,5 +59,6 @@ Minimum compositor versions (newer is fine):
 
 ## A client
 
-You also need something to stream *to* — see [Connect a Client](/docs/clients). The Apple app and any
-Moonlight client both work; both can discover the host on your network automatically.
+You also need something to stream *to* — see [Connect a Client](/docs/clients). There are native
+punktfunk clients for **Apple (macOS, iOS, iPadOS, tvOS), Linux, Windows, and Android**, and any
+Moonlight client works too. All of them can discover the host on your network automatically.