v0.4.20

Fixes

• Harden citations, confirm UX, and close M60 test gaps
• Remap backlink citations and validate array items
• Align query_tasks citations with global index remap
• Forward AbortSignal into staged tool commits
• Fail-closed staging and find_untagged evidence
• Add agent_writes to test fixtures for svelte-check

Highlights

• Add Agent vault writes setting and agent_writes config
• Enforce write policy, HITL staging, citations, and harness safety

Improvements

• Use shared agent_writes normalizer in settings controller