docs: drop early-beta framing for native Windows support (#36093)

Native Windows is out of beta. Removes the early-beta warnings, headings,
and rough-edge framing across the README and docs (EN + zh-Hans), keeping
the WSL2-only dashboard PTY caveat. Historical RELEASE_v0.14.0.md notes are
left intact since they accurately describe the state at that release.

- README: Windows install + cross-platform notes
- index.mdx, installation.md: headings, warning admonitions, parity note
- windows-native.md: title/sidebar_label/warning, provider-hunting tip
- contributing.md, nous-portal.md: cross-platform / Portal parity prose
- Repoint cross-links to the renamed installation#windows-native-powershell
  anchor (EN) and #windows原生powershell (zh, also fixes pre-existing drift)

website/docs/user-guide/windows-native.md

@@ -1,19 +1,15 @@
 ---
-title: "Windows (Native) Guide — Early Beta"
-description: "Early BETA: run Hermes Agent natively on Windows 10 / 11 — install, feature matrix, UTF-8 console, Git Bash, gateway as a Scheduled Task, editor handling, PATH, uninstall, and common pitfalls"
-sidebar_label: "Windows (Native) — Beta"
+title: "Windows (Native) Guide"
+description: "Run Hermes Agent natively on Windows 10 / 11 — install, feature matrix, UTF-8 console, Git Bash, gateway as a Scheduled Task, editor handling, PATH, uninstall, and common pitfalls"
+sidebar_label: "Windows (Native)"
 sidebar_position: 3
 ---
 
-# Windows (Native) Guide — Early Beta
-
-:::warning Early BETA
-Native Windows support is **early beta**. It installs, runs, and passes our Windows-footgun lint, but it hasn't been road-tested at the scale our Linux/macOS/WSL2 paths have. Expect rough edges — especially around subprocess handling, path quirks, and non-ASCII console output. Please [file issues](https://github.com/NousResearch/hermes-agent/issues) with repro steps when you hit something. If you want a battle-tested setup today, use the [Linux/macOS installer under WSL2](./windows-wsl-quickstart.md) instead.
-:::
+# Windows (Native) Guide
 
 Hermes runs natively on Windows 10 and Windows 11 — no WSL, no Cygwin, no Docker. This page is the deep dive: what works natively, what's WSL-only, what the installer actually does, and the Windows-specific knobs you might need to touch.
 
-If you just want to install, the one-liner on the [landing page](/) or [Installation page](../getting-started/installation#windows-native-powershell--early-beta) is all you need. Come back here when something surprises you.
+If you just want to install, the one-liner on the [landing page](/) or [Installation page](../getting-started/installation#windows-native-powershell) is all you need. Come back here when something surprises you.
 
 :::tip Want WSL instead?
 If you prefer a real POSIX environment (for the dashboard's embedded terminal, `fork` semantics, Linux-style file watchers, etc.), see the **[Windows (WSL2) Guide](./windows-wsl-quickstart.md)**. Both coexist cleanly: native data lives under `%LOCALAPPDATA%\hermes`, WSL data lives under `~/.hermes`.
@@ -83,7 +79,7 @@ Top-to-bottom, in order:
 10. **Runs `hermes setup`** — the normal first-run wizard (model, provider, toolsets). Skip with `-SkipSetup`.
 
 :::tip Skip provider hunting on Windows
-Native Windows is still early beta, and per-tool API key setup (Firecrawl, FAL, Browser Use, OpenAI TTS) is the highest-friction part of getting a useful agent. A [Nous Portal](/user-guide/features/tool-gateway) subscription covers the model **and** all of those tools through one OAuth login. After the installer finishes, run `hermes setup --portal` to wire everything up.
+On Windows, per-tool API key setup (Firecrawl, FAL, Browser Use, OpenAI TTS) is the highest-friction part of getting a useful agent. A [Nous Portal](/user-guide/features/tool-gateway) subscription covers the model **and** all of those tools through one OAuth login. After the installer finishes, run `hermes setup --portal` to wire everything up.
 :::
 
 ## Feature matrix