Add structured task delegation and handoff

[NarwhalChen]

Summary

• register distinct task:delegate_task and task:handoff_task tools for Agent Host channel turns
• execute bounded delegation and stable-task ownership transfer while preserving actor-native provider sessions and Dexie message authority
• surface structured task provenance, objectives, result receipts, and failures in the existing Agent Work panel
• keep receiver acceptance, artifact resolution, propagation monitoring, and other DAG-adapter concerns explicitly unsupported for now

Verification

• pre-push formatting check passed
• ESLint passed with 10 existing warnings and no errors
• 543 tests passed, 1 skipped
• tsc --noEmit --skipLibCheck passed
• real Electron automation verified delegated success and handoff failure in an isolated profile without invoking a provider

Evidence

The real-app automation exercised Elena Agent Work cards for:

• delegated task completed with one delivered Dexie result receipt
• handed-off task failed with the receiver runtime error rendered visibly

The isolated profile was removed after verification. Automation screenshot remains under the ignored .automation/artifacts directory in the local worktree.

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Project	Deployment	Actions	Updated (UTC)
foxyfox-docs	Error		Aug 2, 2026 11:34am

1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
foxyfox-website	Skipped		Aug 2, 2026 11:34am