Why: completion-declaration test segment per AGENTS.md (CI remains the
authoritative test source on the PR).
Evidence: row exit=0 in the card evidence table.
Impact: none.
Refs: N2 closure
Why: closure requires the results section with the acceptance evidence
map and the WP6 assembly review (no new settings; behavior changes
enumerated as intentional).
Evidence: R1-R6 rows and the three acceptance clauses map to named
tests and GATE heads.
Impact: none.
Refs: N2 WP6
Why: include the current integration baseline before verification.
Evidence: fetched origin/main=eb0d4b5a499322a23155c8d89a024247f6e7830d.
Impact: integrate upstream changes without rewriting task history.
Refs: task-sync
Why: Backend#90 merged the subagent transcript/resume/notice work;
Native#29 and Squad#33 carried the Background field; Dev pins and the
increment record follow.
Evidence: check-pins pins ok; WP5 chain CI green on every merge head;
the three WP5 acceptance tests are GATE on backend main 7980a8a2.
Impact: subagents are resumable with per-run transcripts and durable
notices.
Refs: Agent-Native#29, Agent-Squad#33, Agent-System-Backend#90
Why: Backend#89 merged the plugin/bundled skill validation; Native#28
and Squad#32 carried the validator; Dev pins, the plugins→skills edge,
and the increment record follow.
Evidence: check-pins pins ok; WP4 chain CI green on every merge head;
TestV2InvalidSkillRejected GATE on backend main b44f78b0.
Impact: skills now validated against the open Agent Skills spec.
Refs: Agent-Native#28, Agent-Squad#32, Agent-System-Backend#89
Why: Native#27 merged the MCP 2026-07-28 alignment; Squad#31 and
Backend#88 carried the cascade; Dev pins and the increment record follow.
Evidence: check-pins pins ok; WP3 chain CI green on every merge head;
TestStdioSlowCancelThenEcho (acceptance 3) passes unchanged.
Impact: MCP client negotiates versions and recognizes resultType.
Refs: Agent-Native#27, Agent-Squad#31, Agent-System-Backend#88
Why: Native#26 merged the native Anthropic client (acceptance clause 1,
audit N4 closed); Squad#30 and Backend#87 carried the cascade; Dev pins
and the increment record follow.
Evidence: check-pins pins ok; WP2 chain CI green on every merge head;
TestAnthropicPresetToolRound GATE on native main d6053baf.
Impact: acceptance clause 1 is closed.
Refs: Agent-Native#26, Agent-Squad#30, Agent-System-Backend#87
Why: Backend #86 merged the tool-group-aligned trimming; native #25 and
squad #29 carry the spill and cache contract work; the Dev pins and the
increment record follow.
Evidence: check-pins pins ok; WP1 chain CI green on every merge head.
Impact: acceptance clause 2's product side is closed
(TestTrimOldestKeepsToolPairs GATE).
Refs: Agent-Native#25, Agent-Squad#29, Agent-System-Backend#86
Why: the card was a skeleton; the plan is merged (Documents #42) and
the increments need their requirement rows.
Evidence: R1-R6 map to the plan's WP1-WP6 with verified gap citations.
Impact: none.
Refs: Agent-System-Documents#42
Why: Documents #42 merged the N2 plan (six work packages with the
current-state survey); the Dev pin follows.
Evidence: plan cites pinned baselines agent-native ead690b, backend
68addfd; implementation proceeds per its WP order.
Impact: documentation pin only.
Refs: Agent-System-Documents#42
Why: establish the authorized task workspace and its initial baseline.
Evidence: preserved precheck receipt in .task/feature-agent-stack-n2.md; R0=878e0e7ceba3bb6b78c36c5113eacc846a7f017b.
Impact: task metadata only; the feature workspace starts at 878e0e7ceb.
Refs: .task/feature-agent-stack-n2.md
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