chore: bump portfolio pin v0.14.6 -> v0.14.7 (PM-side task cancel) (#23)

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

Author: mabry1985

protoagent.bundle.yaml

@@ -38,7 +38,7 @@ verified_against: 0.81.0
 
 plugins:
   - { id: delegates, builtin: true }                                                  # ACP/A2A spawn spine — ships with protoAgent
-  - { id: portfolio,     url: https://github.com/protoLabsAI/portfolio-plugin,     ref: v0.14.6 }   # orchestrate + spawn teams
+  - { id: portfolio,     url: https://github.com/protoLabsAI/portfolio-plugin,     ref: v0.14.7 }   # orchestrate + spawn teams
   - { id: project_board, url: https://github.com/protoLabsAI/projectBoard-plugin,  ref: v0.25.0 }  # installed-not-enabled: spawned teams' board
   - { id: agent_browser, url: https://github.com/protoLabsAI/agent-browser-plugin, ref: v0.5.1 }   # installed-not-enabled: spawned teams' browser