feat(canonical): load YAML/markdown into Bundle

internal/canonical/testdata/sample/agents/sample.md

@@ -0,0 +1,5 @@
+---
+name: sample
+description: sample agent
+---
+sample body

internal/canonical/testdata/sample/config.yaml

@@ -0,0 +1,2 @@
+enabled_harnesses: [claude-code, crush]
+active_profile: home

internal/canonical/testdata/sample/instructions/global.md

@@ -0,0 +1,3 @@
+# Global instructions
+
+Be helpful.

internal/canonical/testdata/sample/mcp.yaml

@@ -0,0 +1,4 @@
+servers:
+  - name: filepuff
+    command: /usr/local/bin/filepuff
+    transport: stdio

internal/canonical/testdata/sample/profiles/home.yaml

@@ -0,0 +1,8 @@
+name: home
+gateway:
+  url: https://gw.lan
+  token: dummy
+  default_model: sonnet
+models:
+  - id: claude-sonnet-4-6
+    alias: sonnet

internal/canonical/testdata/sample/skills/hello/SKILL.md

@@ -0,0 +1,5 @@
+---
+name: hello
+description: example skill
+---
+hello body