feat(cli): add mesh templates and claudemesh create command

Predefined mesh configurations (dev-team, research, ops-incident,
simulation, personal) let users bootstrap meshes with groups, roles,
state keys, and system prompt hints. Templates are bundled at build
time via Bun's JSON import support.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/cli/src/templates/simulation.json

@@ -0,0 +1,17 @@
+{
+  "name": "simulation",
+  "description": "Load testing simulation with configurable time multiplier and user personas",
+  "groups": [
+    { "name": "personas", "roles": ["admin", "user", "customer"] },
+    { "name": "observers", "roles": ["monitor", "analyst"] },
+    { "name": "control", "roles": ["orchestrator"] }
+  ],
+  "stateKeys": {
+    "clock-speed": "x1",
+    "sim-status": "paused",
+    "tick-count": "0",
+    "scenario": ""
+  },
+  "suggestedRoles": ["orchestrator", "persona", "monitor"],
+  "systemPromptHint": "SIMULATION MODE. Follow the clock-speed state for time multiplier. Act according to your persona role and the simulated time. Report actions to @observers."
+}