docs(skill): wizard-free launch patterns for spawning peer sessions

Adds a "Spawning new sessions (no wizard)" section to the bundled
claudemesh skill. Documents every flag of `claudemesh launch`
(--name, --mesh, --join, --groups, --role, --message-mode,
--system-prompt, --resume, --continue, -y, -q, plus -- pass-through),
shows wizard-free spawn templates from minimal to cold-start-with-
join, and the canonical pane-creation primitives (tmux send-keys,
iTerm2 osascript, Terminal.app, gnome-terminal, screen) that wrap
the verb when spawning into a fresh terminal pane or window.

Closes the gap where Claude knew the verb existed but had no
playbook for "how do I start another peer in a new pane without an
interactive prompt firing." Bumps CLI to 1.9.4 so the skill ships
on `claudemesh install`.

apps/cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "claudemesh-cli",
-  "version": "1.9.3",
+  "version": "1.9.4",
   "description": "Peer mesh for Claude Code sessions — CLI + MCP server.",
   "keywords": [
     "claude-code",