v0.5.1 — 领地删除（治理级联语义）

v0.5.1

New

• Territory deletion (kingdom_delete_territory tool + gateway territory.delete + GUI ops-panel delete control)
• Safe-by-default deletion guard: any task under the territory rejects removal
• Force cascade with a governance audit trail
• GUI delete controls with explicit cascade confirmation

Governance

• Active tasks (CREATED/ASSIGNED/RUNNING/REVIEW) become FAILED on forced territory removal
• DONE / FAILED facts remain immutable
• All cascade operations are recorded as events (TERRITORY_DELETED / TASK_FAILED), payload carries the full task ledger (original → final status)
• Live executions are aborted during the cascade

Assets

• dsh-kingdom-0.5.1.tgz (npm dsh-kingdom@0.5.1, latest)
• dsh-kingdom-gui-0.5.1.zip (standalone front-end, includes the new delete controls)

Quality

• Plugin tests 6/6 (node --test, node:sqlite in-memory)
• GUI tests 41/41 (38 baseline + 3 delete-control cases)
• Clean-environment install acceptance 4/4; three-channel smoke (tool / gateway / GUI build) on the live kingdom