docs(skill): add Windows pane-spawn primitives for launch

Adds Windows Terminal (wt.exe new-tab + split-pane), PowerShell
Start-Process, cmd.exe start, and WSL routing examples to the
"Spawning new sessions" section. Plus the platform's gotchas:
single-quote nesting in cmd.exe, -NoExit semantics, WSL ~/.claudemesh
path-vs-host divergence, and pwsh / --profile selectors for Windows
Terminal. Bumps CLI to 1.9.5.

apps/cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "claudemesh-cli",
-  "version": "1.9.4",
+  "version": "1.9.5",
   "description": "Peer mesh for Claude Code sessions — CLI + MCP server.",
   "keywords": [
     "claude-code",