Replace SSH tutorial in README with wiki pages by OS

Linux, macOS, Windows SSH setup guides moved to wiki. README becomes index with wiki links and breadcrumb to existing docs.

README.md

@@ -4,46 +4,22 @@
 >
 > See in particular: [Skin Creation Workflow](./Skin-Creation-Workflow), [Nakama Deployment](./Nakama-Deployment), and [Patch Release Workflow](./Patch-Release-Workflow).
 
-# Cloning from any tailnet machine
+## SSH setup for cloning
 
-## Prerequisites
-- The remote machine must be on your tailnet (registered + can ping `100.85.x.x`)
-- You must have an account on the Gitea instance (`http://git.klud.top`)
-- You must have an SSH key on the remote machine (`ssh-keygen` if you don't)
+All clones **must use SSH** over Tailscale. HTTPS is disabled on this instance.
 
-## Step 1: Add your SSH key to Gitea
-1. Open `http://git.klud.top/user/settings/keys` in browser
-2. Paste the content of `~/.ssh/id_ed25519.pub` (or `id_rsa.pub`)
-3. Click "Add Key"
+Guides by operating system:
 
-## Step 2: Test SSH reachability
+- [Linux](/danchie/tekton/wiki/SSH-Setup-Linux)
+- [macOS](/danchie/tekton/wiki/SSH-Setup-macOS)
+- [Windows](/danchie/tekton/wiki/SSH-Setup-Windows)
+
+Quick verification after setup:
 ```bash
 ssh -T git@thunderobot -p 222
-# Expected output: "Hello from Gitea!\n\nPlease come over!"
-# If asked about fingerprint, type "yes" and press Enter
 ```
 
-## Step 3: Clone a repo
+Once verified, clone:
 ```bash
-# Using tea CLI
-tea repos clone --git-protocol ssh danchie/tekton
-
-# Or plain git
 git clone git@thunderobot:222/danchie/tekton.git
 ```
-
-## Troubleshooting
-- `ssh: connect to host thunderobot port 222: Connection refused`
-  → Ensure the remote machine has `tailscale ping thunderobot` resolving to `100.93.226.13`
-  → Ensure the host's port `222` is reachable from the remote (it's bound to `0.0.0.0:222` in Docker)
-
-- `Permission denied (publickey)`
-  → Your SSH key wasn't added via Gitea web UI
-  → Run `ssh-add ~/.ssh/id_ed25519` if you use an agent
-
-- `Host key verification failed`
-  → Run `ssh -T git@thunderobot -p 222` interactively once to accept the fingerprint
-
-## HTTPS is disabled
-`DISABLE_HTTP_GIT = true` is set on the server. All clones MUST use SSH.
-If you need to fetch via HTTPS for CI or other non-ssh environments, this must be remapped.