Why: evidence tooling validates every ```json block in a task card as a receipt; the L1 summary card's illustrative capability snapshot (unquoted keys) is prose, not a receipt, and tripped a corrupt-receipt warning on every evidence run.
Evidence: after this change the card holds exactly one ```json block and it parses; content is byte-identical, only the fence marker changed.
Impact: Task card formatting only; no evidence content modified.
Refs: Dev PR #650 (card origin)
Why: close the task card inside its own PR so landing it needs no post-merge backfill or separate close PR.
Evidence: .task/feature-fast-slow-o2-p1.md -> .task/archive/feature-fast-slow-o2-p1.md; status 已完成（合入前闭合）; PR #656https://git-home.u1680832.nyat.app:30319/weichen/Agent-System-Dev/pulls/656.
Impact: task metadata only; the card is archived within PR #656 and lands with its merge commit.
Refs: task.sh close --self
Why: The approved P1 run finished; its outcome must be recorded before merge.
Evidence: Probe receipt route_contract_released; A01 provider records show route_contract_eof release then a rejected work checkpoint.
Impact: Task card only.
Refs: docs/superpowers/plans/2026-10-19-fast-slow-o2-route-contract-eof-plan.md section 5
Co-authored-by: Cursor <cursoragent@cursor.com>
Why: The task card is the delivery record for the approved O2 P1 run.
Evidence: Probe terminal receipt route_contract_released; agent-exec receipts under /tmp/o2p1-20261020.
Impact: Task card only.
Refs: docs/superpowers/plans/2026-10-19-fast-slow-o2-route-contract-eof-plan.md section 5
Co-authored-by: Cursor <cursoragent@cursor.com>
Why: establish the authorized task workspace and its initial baseline.
Evidence: preserved precheck receipt in .task/feature-fast-slow-o2-p1.md; R0=873e957306a791eaa36e5251b45e3ed44a863143.
Impact: task metadata only; the feature workspace starts at 873e957306.
Refs: .task/feature-fast-slow-o2-p1.md
Why: The merge gate requires a fresh authoritative-main sync recorded in the task card before merging into main.
Evidence: make evidence receipt appended; task-sync re-verified sync_base=aa9f98d (current main) changed=0 at 2026-10-20T11:53:24Z.
Impact: Task card bookkeeping only.
Refs: Dev PR #650
Why: task-sync/evidence tooling locates a task card by its branch metadata line; the summary-only card was invisible to the card lookup and its sync record could not be recorded.
Evidence: card header added (R0 f979170, standalone, accepting_requirements=false); task-sync rerun after this commit writes the sync receipt into the card.
Impact: Task card bookkeeping only.
Refs: Dev PR #650
Why: include the current integration baseline before verification.
Evidence: fetched origin/main=aa9f98d2e5b8ce36724f881752b0a95a353df987.
Impact: integrate upstream changes without rewriting task history.
Refs: task-sync
Why: pre-merge gate evidence for PR #655.
Evidence: make evidence records for task-sync and task-pr-check.
Impact: archived task card only.
Refs: .task/archive/fix-multiuser-project-collab.md
Co-authored-by: Cursor <cursoragent@cursor.com>
Why: close the task card inside its own PR so landing it needs no post-merge backfill or separate close PR.
Evidence: .task/fix-multiuser-project-collab.md -> .task/archive/fix-multiuser-project-collab.md; status 已完成（合入前闭合）; PR #655https://git-home.u1680832.nyat.app:30319/weichen/Agent-System-Dev/pulls/655.
Impact: task metadata only; the card is archived within PR #655 and lands with its merge commit.
Refs: task.sh close --self
Why: close out the card with the Frontend #120 knip fix, the backend/frontend repin units and the passing local make test.
Evidence: make evidence record for make test on the repinned HEAD.
Impact: task card only.
Refs: .task/fix-multiuser-project-collab.md
Co-authored-by: Cursor <cursoragent@cursor.com>
Why: local make test failed at the frontend knip ratchet (60 > 58) inherited from Frontend main.
Evidence: make evidence record in the task card.
Impact: task card only.
Refs: .task/fix-multiuser-project-collab.md
Co-authored-by: Cursor <cursoragent@cursor.com>
Why: completion evidence must come from make evidence
Evidence: make task-sync tested_head 902ca4a
Impact: task card only
Refs: .task/fix-multiuser-project-collab.md
Co-authored-by: Cursor <cursoragent@cursor.com>
Why: include the current integration baseline before verification.
Evidence: fetched origin/main=7e6c544b3c25c510e3d928bfb4515937a1cd6696.
Impact: integrate upstream changes without rewriting task history.
Refs: task-sync
Why: include the current integration baseline before verification.
Evidence: fetched origin/main=a4fa1bb518dd13f2efb9bfab8fdf10e15ddeab22.
Impact: integrate upstream changes without rewriting task history.
Refs: task-sync
Why: close the task card inside its own PR so landing it needs no post-merge backfill or separate close PR.
Evidence: .task/feature-fast-slow-o2-i3-repin.md -> .task/archive/feature-fast-slow-o2-i3-repin.md; status 已完成（合入前闭合）; PR #653https://git-home.u1680832.nyat.app:30319/weichen/Agent-System-Dev/pulls/653.
Impact: task metadata only; the card is archived within PR #653 and lands with its merge commit.
Refs: task.sh close --self
Why: independent review passed; composition CI green on 6b78511.
Evidence: Dev CI on 6b78511; reviewer replay of check-pins
Impact: task card only.
Refs: Agent-System-Dev #653
Co-authored-by: Cursor <cursoragent@cursor.com>
Why: close the task card inside its own PR so landing it needs no post-merge backfill or separate close PR.
Evidence: .task/feature-conversation-handoff.md -> .task/archive/feature-conversation-handoff.md; status 已完成（合入前闭合）; PR #651https://git-home.u1680832.nyat.app:30319/weichen/Agent-System-Dev/pulls/651.
Impact: task metadata only; the card is archived within PR #651 and lands with its merge commit.
Refs: task.sh close --self
Why: Retain the strict READY check before freezing the documentation candidate.
Evidence: make evidence captured the complete precheck output with exact source and target.
Impact: Task metadata only; final CI remains required.
Refs: PR #651
Why: Finish the scoped documentation delivery with the latest authoritative policies.
Evidence: Synchronized target and direct document/config/component checks pass.
Impact: Task record only; exact-head CI remains pending.
Refs: PR #651; queue #518
Why: include the current integration baseline before verification.
Evidence: fetched origin/main=17f8bc06c110014b9101e7a33729d9f5445bd123.
Impact: integrate upstream changes without rewriting task history.
Refs: task-sync
Why: Preserve the verified repair while keeping runtime composition adoption with PR #653.
Evidence: Backend #226 merged after exact-head CI; host receipts imported unchanged.
Impact: Task metadata only; Dev PR #651 still requires its own final CI.
Refs: PR #651; Backend PR #226; PR #653
Why: Backend #223 test calls a SQLite-only FTS helper on PostgreSQL; user authorized a test-only fix.
Evidence: Dev CI runs/4432/jobs/7197
Impact: task card only.
Refs: Agent-System-Backend #223
Co-authored-by: Cursor <cursoragent@cursor.com>
Why: Continue the authorized CI repair with reconciled task identity.
Evidence: The original LOCAL_READY receipt is imported through make task-resume.
Impact: Task metadata only; final delivery still requires synchronization and CI.
Refs: PR #651
Why: establish the authorized task workspace and its initial baseline.
Evidence: preserved precheck receipt in .task/feature-fast-slow-o2-i3-repin.md; R0=adbef2f49c6c252a09449496afbdb6685201993b.
Impact: task metadata only; the feature workspace starts at adbef2f49c.
Refs: .task/feature-fast-slow-o2-i3-repin.md
Why: include the current integration baseline before verification.
Evidence: fetched origin/main=adbef2f49c6c252a09449496afbdb6685201993b.
Impact: integrate upstream changes without rewriting task history.
Refs: task-sync
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