Why: Q3 (convergence and interop) completed across agent-native (#40),
agent-squad (#46/#47) and backend (#99-#102); Dev gitlinks must track the
merged component mains and the task card records the outcome before the
completion declaration.
Evidence: card increment table rows WP1a-WP6 with merged PR/SHA references;
component CI statuses recorded as GATE in the card verification section;
three-segment outputs (precheck/task-sync/test) appended via make evidence
in follow-up commits on this branch.
Impact: deps/agent-squad bcc8d08 -> 663e89e, deps/agent-native 1ac21c6 ->
37c5e6f, modules/backend 06934bc -> 4791b2e; task card filled.
Refs: .task/feature-agent-stack-q3.md; Q3 plan 2026-10-07-agent-stack-q2q3-plans.md
Why: establish the authorized task workspace and its initial baseline.
Evidence: preserved precheck receipt in .task/feature-agent-stack-q3.md; R0=78409a9ceacacf8a152b811d94c7195c4f084664.
Impact: task metadata only; the feature workspace starts at 78409a9cea.
Refs: .task/feature-agent-stack-q3.md
Why: branches merged into main had left their task cards open; backfill status and archive to prevent bookkeeping debt.
Evidence: feature-agent-stack-q2.md(PR#251) — merges verified via git log --merges against origin/main.
Impact: .task/*.md moved to .task/archive/ with status backfilled; no code or submodule change.
Refs: task.sh close (card-autoclose-r1)
Why: include the current integration baseline before verification.
Evidence: fetched origin/main=1e85198578d8052c063c06c33fe0632ab01c213f.
Impact: integrate upstream changes without rewriting task history.
Refs: task-sync
Why: Q2 (topology library) completed in Agent-Squad across WP1-4 (PRs
#42-#45, main bcc8d08) and the backend nested pin followed (PR #98, main
06934bc); Dev gitlinks must track the merged component mains and the task
card records the outcome before the completion declaration.
Evidence: card increment table rows WP1-4 with merged PR/SHA references;
component CI statuses recorded as GATE in the card's verification section;
three-segment outputs (precheck/task-sync/test) appended via make evidence
in follow-up commits on this branch.
Impact: deps/agent-squad c462bc4 -> bcc8d08, modules/backend 6e02a1f ->
06934bc; task card filled (results/verification/increments).
Refs: .task/feature-agent-stack-q2.md; Q2 plan 2026-10-07-agent-stack-q2q3-plans.md
Why: Documents #44 merged the Q2/Q3 plans; the Dev documents pin
follows and the Q2 card opens with its requirement rows (Q3 gets its
own task after Q2 closes).
Evidence: R1-R4 map to the plan's Q2-WP1..WP4 with verified gap citations.
Impact: documentation pin + task card.
Refs: Agent-System-Documents#44
Why: establish the authorized task workspace and its initial baseline.
Evidence: preserved precheck receipt in .task/feature-agent-stack-q2.md; R0=a30c55425a30c5f023b311e9f822f39b796bcbc8.
Impact: task metadata only; the feature workspace starts at a30c55425a.
Refs: .task/feature-agent-stack-q2.md
Why: branches merged into main had left their task cards open; backfill status and archive to prevent bookkeeping debt.
Evidence: feature-agent-stack-n3.md(PR#248) — merges verified via git log --merges against origin/main.
Impact: .task/*.md moved to .task/archive/ with status backfilled; no code or submodule change.
Refs: task.sh close (card-autoclose-r1)
Why: backend main carries the nested core pin at a253a40b plus the
rewind-test settle-window fix; the combination check now passes across
all nested copies.
Evidence: check-pins pins ok; backend CI green on 26bd9286 (GATE).
Impact: none beyond the pin.
Refs: Agent-System-Backend#97
Why: the TypeScript contract authority gained the usage split fields
(Core a253a40b) and the ui mirror was regenerated (UI 76d66337); the
Dev build step regenerates contracts.ts from the authority, so the
pins must carry this combination for the worktree check to pass.
Evidence: make contracts on this combination produces byte-identical
files (verified locally).
Impact: none beyond the pins.
Refs: Agent-System-Core#24, Agent-System-UI#39
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: N3 closure
Why: closure requires the results section with the acceptance evidence
map across all six work packages.
Evidence: three acceptance clauses map to named tests and GATE heads.
Impact: none.
Refs: N3 closure
Why: Backend#96 merged the usage split and default retry; the core
Usage fields, Frontend#48, and the native/squad cascades landed; Dev
pins and the increment record follow.
Evidence: check-pins pins ok; WP6 chain CI green on every merge head;
audit N20 closes (split flows into run records on every path).
Impact: usage accounting is uniform end to end; stream retry is a
library default.
Refs: Agent-Native#35-#39, Agent-Squad#41, Agent-System-Backend#96,
Agent-System-Frontend#48
Why: Backend#95 merged the memory port wiring; Native#34 and Squad#38
carried the port; Dev pins and the increment record follow.
Evidence: check-pins pins ok; WP5 chain CI green on every merge head;
the migration parity test GATE on backend 766a96e8.
Impact: the memory port exists end to end with write-back.
Refs: Agent-Native#34, Agent-Squad#38, Agent-System-Backend#95
Why: Backend#94 merged the checkpoint closure wiring; Native#33 and
Squad#37 carried the library work; Dev pins and the increment record
follow.
Evidence: check-pins pins ok; WP3 chain CI green on every merge head;
acceptance clause 2's tests GATE across layers.
Impact: rollback evidence complete (eligibility, symlink guard,
partial restore, retention, HTTP).
Refs: Agent-Native#33, Agent-Squad#37, Agent-System-Backend#94
Why: Backend#93 merged the GenAI telemetry wiring; Native#32 and
Squad#36 carried the convention work; Dev pins and the increment
record follow.
Evidence: check-pins pins ok; WP4 chain CI green on every merge head;
acceptance clause 3's tests GATE on native fe0c4a9f.
Impact: spans follow the OTel GenAI convention end to end.
Refs: Agent-Native#32, Agent-Squad#36, Agent-System-Backend#93
Why: Backend#92 merged the JournalOnly conversation wiring; Native#31
and Squad#35 carried the library mode; Dev pins and the increment
record follow, including the design adjustment (journal-only instead
of transcript-authoritative, with the freeze rationale).
Evidence: check-pins pins ok; WP2 chain CI green on every merge head;
acceptance clause 1's product tests GATE on backend 9f3fdb26.
Impact: conversation runs are durable mid-turn without freezing the
context pipeline.
Refs: Agent-Native#31, Agent-Squad#35, Agent-System-Backend#92
Why: Backend#91 merged the graceful-resume split; Native#30 and
Squad#34 carried the tail repair and N6 fix; Dev pins and the
increment record follow.
Evidence: check-pins pins ok; WP1 chain CI green on every merge head;
acceptance clause 1's library tests GATE on native cb21ec4e.
Impact: every Run now pairs orphan tails before the first request;
gracefully-interrupted subagents resume exactly once.
Refs: Agent-Native#30, Agent-Squad#34, Agent-System-Backend#91
Why: Documents #43 merged the N3 plan; the Dev documents pin follows
and the card opens with its requirement rows.
Evidence: R1-R6 map to the plan's WP1-WP6 with verified gap citations.
Impact: documentation pin + task card.
Refs: Agent-System-Documents#43
Why: establish the authorized task workspace and its initial baseline.
Evidence: preserved precheck receipt in .task/feature-agent-stack-n3.md; R0=0e12b73e66d47c94a398648822d4928ecd43575c.
Impact: task metadata only; the feature workspace starts at 0e12b73e66.
Refs: .task/feature-agent-stack-n3.md
Why: branches merged into main had left their task cards open; backfill status and archive to prevent bookkeeping debt.
Evidence: feature-agent-stack-n2.md(PR#244) — merges verified via git log --merges against origin/main.
Impact: .task/*.md moved to .task/archive/ with status backfilled; no code or submodule change.
Refs: task.sh close (card-autoclose-r1)
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
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