feat(fleet): add local canary CLI

packages/mosaic/framework/fleet/examples/local-canary.yaml

@@ -0,0 +1,27 @@
+version: 1
+transport: tmux
+tmux:
+  socket_name: mosaic-factory
+  holder_session: _holder
+defaults:
+  working_directory: ~/src
+runtimes:
+  claude:
+    reset_command: /clear
+  codex:
+    reset_command: /clear
+  pi:
+    reset_command: /new
+agents:
+  - name: lead
+    runtime: claude
+    class: orchestrator
+    persistent_persona: true
+  - name: coder0
+    runtime: codex
+    class: implementer
+    reset_between_tasks: true
+  - name: reviewer0
+    runtime: pi
+    class: reviewer
+    reset_between_tasks: true