Tasks: Mission-Type Doctrine Authority

Mission: mission-type-doctrine-authority-01KXH6GE | Branch: mission/883-mission-type-governance-profiles Plan: plan.md (9-IC / 4-lane map, post-plan-squad reconciled) | Spec: spec.md Design authority: ADR 2026-07-14-2 · data-model.md · contracts/resolution-and-enforcement.md

> The architecture is fixed by the ADR (Accepted). These WPs decompose it; they do not > re-decide it. Every WP maps ~1:1 to a plan IC. The ADR / plan / contracts are the authority — > WP bodies cite them and add per-subtask execution guidance, they do not restate the design.

12 work packages across 4 lanes. Slice 1 of the specify_cli/missions retirement (#883, partial close — no PR auto-close keyword). Two swaps (gates, steps) carry transitional parity scaffolds added at the swap's start and deleted before merge (C-002, NFR-005). The enduring guards are behavioural (non-leakage + non-vacuity twin + determinism), authored as doctrine-module + integration tests in the join (WP12).

Lane shape (binding — see plan.md "Cross-cutting notes")

no dependency. Shares the terminal graph.yaml regenerate with WP06/07/08 — that regenerate is owned once by WP12 so no lane clobbers DRG freshness.

{WP04 (leak closure), WP05 (override channel), WP11 (steps swap)}. WP03 is the seam every downstream WP converges on; it MUST subsume-and-migrate (never add-beside) and stay ≤ 15 complexity.

styleguides), WP07 (research), WP08 (plan, lightest). Each deps WP03 (schema stable) and WP05 (the id == mission_type overlay invariant). Sized off the ADR artifact inventory, not equal thirds.

(adapter + reader flip + delete copies). Internal hard edge reconcile→migrate. This lane must NOT gate the join — WP12 does not depend on it (FR-007 / NFR-004). On deep drift the final flip in WP10 may defer to slice 2 (reconciliation still lands; deferral recorded, never silent).

WP09/WP10** — making the enduring governance guards depend on a deliberately non-blocking lane would gate the mission on it (violating FR-007/NFR-004). WP12 owns the single terminal regenerate-graph --check, run once after WP01 + WP06/07/08 land.

  • Lane A — tidy (independent root): WP01 (retire governance_refs). Behaviour-preserving, first,
  • Lane B — critical path (SERIAL SPINE): WP02 (canonicalizer) → WP03 (resolver seam) →
  • Lane C — content authoring (PARALLEL, uneven): WP06 (documentation, heaviest — 5 net-new
  • Lane D — gates/dossier swap (DETACHABLE, NON-BLOCKING): WP09 (reconcile upward) → WP10
  • Join — enforcement (TERMINAL): WP12. Deps WP03, WP04, WP06, WP07, WP08, WP11. **Explicitly NOT

Single-file ownership invariants (no-overlap by construction): src/charter/mission_type_profiles.py → WP03 (WP05 adds id to MissionTypeProfile, WP10 populates the expected_artifacts slot — both sequential, recorded out-of-map edits serialized behind WP03: WP05←WP03 and WP10←WP03+WP05, so the two out-of-map edits never run in parallel); src/charter/context.py → WP04; src/doctrine/base.py → WP05; src/doctrine/missions/step_contracts.py → WP11; src/doctrine/graph.yaml → WP12. Coordination resolved (post-squad): src/specify_cli/cli/commands/mission_type.py is owned by WP01 (governance_refs display removal). WP03 now migrates the resolve_action_sequence caller at :1477 (+ its import) as a justified out-of-map, sequential edit — enabled by the new WP01 → WP03 dependency edge (WP01 lands first, leaving the file quiet). No caller is operator-deferred. See "WP01/WP03 mission_type.py coordination" below.

Dependency graph (edges)

WP01 ─┐  (root, Lane A)
WP02 ─┴→ WP03 → WP04                      (Lane B spine; WP03 deps WP01, WP02)
                → WP05 → {WP06, WP07, WP08}   (Lane C, each deps WP03+WP05)
                → WP11
WP09 → WP10                              (Lane D, detachable — NOT a WP12 dep; WP10 deps WP09, WP03, WP05)
{WP03, WP04, WP06, WP07, WP08, WP11} → WP12   (join)

Roots: WP01, WP02, WP09.

WP → IC → requirement map

WPICTitleDepsProfileFunctional refs
WP01IC-01Retire governance_refs—python-pedroFR-010
WP02IC-02Mission-type canonicalizer—python-pedroFR-012, FR-001, FR-003, C-001 (FR-003a in body)
WP03IC-03Unified resolver seamWP01, WP02python-pedroFR-006, FR-013, FR-004, FR-003, FR-009, NFR-007, NFR-001
WP04IC-04Action-path leak closureWP03python-pedroFR-002, FR-001, C-004 (FR-003a in body)
WP05IC-05Per-type override channelWP03python-pedroFR-011, C-005
WP06IC-06aDocumentation governance contentWP03, WP05doctrine-daphneFR-005, FR-002, NFR-006 (SC-004 in body)
WP07IC-06bResearch governance contentWP03, WP05doctrine-daphneFR-005 (SC-004 in body)
WP08IC-06cPlan governance contentWP03, WP05doctrine-daphneFR-005 (SC-004 in body)
WP09IC-07aGates reconcile upward—python-pedroFR-007
WP10IC-07bGates migrate/flipWP09, WP03, WP05python-pedroFR-007, NFR-004, NFR-001 (SC-005 in body)
WP11IC-08Steps swapWP03python-pedroFR-008, NFR-001 (SC-007 in body)
WP12IC-09Enforcement + test postureWP03, WP04, WP06, WP07, WP08, WP11python-pedroNFR-005, NFR-006, NFR-007, C-002 (SC-001/002/003/006 in body)

> NFR-002 (ruff/mypy clean) and NFR-003 (complexity ≤ 15) bind every code WP and are carried in > each WP's requirement_refs. FR-003a (typeless/mission-less degrade), SC- (success criteria), and > the remaining C- constraints are validated at the behaviour level inside the WP bodies — they are > not FR|NFR|C-\d+-shaped mappable refs, so they live in Context/DoD, not requirement_refs.

Subtask Index

IDDescriptionWP
T001Remove governance_refs from MissionType model (extra="forbid")WP01
T002Strip governance_refs: + dangling DIR-010/011 from all four mission_types/*.yamlWP01
T003Update mission_type.py CLI display (drop the governance_refs rows)WP01
T004Fix the drg.py:169 comment; re-point any DRG parity guardWP01
T005Update the ~3–4 tests that asserted the field; ruff/mypy cleanWP01
T006New boundary-safe charter/mission_type_key.py canonicalizerWP02
T007Remove sw-dev governance default at mission.py get_mission_type:575WP02
T008Route get_deliverables_path:605 through the canonicalizerWP02
T009Retire the dead get_mission_key:548WP02
T010Classify the ~13 get_mission_type callers (has-meta → unaffected; typeless → neutral degrade)WP02
T011RED-first: typeless caller degrades (never sw-dev); ruff/mypy cleanWP02
T012ResolvedMissionType / ResolvedGovernance ordered bundle typesWP03
T013resolve_mission_type_context resolver + _resolve_* helpers (≤ 15)WP03
T014Subsume resolve_action_sequence/resolve_mission_type_governance/load_profileWP03
T015Migrate all 7 call-sites (incl. mission_type.py:1477) + __all__ + stale doc ref resolver.py:299WP03
T016URN-normalized cross-grain disjointness guard (FR-013)WP03
T017Preserve the two hard-fail policies as explicit branches; FR-004 empty-grainWP03
T018Transitional sw-dev byte-parity scaffold (deleted at WP end); determinism testWP03
T019RED-first behavioural test through a shared action name (leak repro)WP04
T020Rewire _load_action_doctrine_bundle:865 off template_set onto meta.jsonWP04
T021Thread mission_type through build_charter_context:252 + _json:3254 + scope_router:66WP04
T022Split template_set (kept for template-file selection only, C-004)WP04
T023Delete the dead _render_action_scoped:1500/_append_action_doctrine_lines:1451 pair + its orphan test test_context.py:716WP04
T024Per-entry degrade for mission-less callers (executor.py:270, workflow.py:675); ruff/mypyWP04
T025Add id to MissionTypeProfile (out-of-map into WP03's file, sequential)WP05
T026BaseDoctrineRepository[MissionTypeProfile] subclass in charter/WP05
T027Wire the overlay (doctrine/base.py) builtin → org → project for the profileWP05
T028Precedence + collision test (project override wins, warning reported)WP05
T029id == mission_type invariant asserted; ruff/mypy cleanWP05
T030Reference-wire existing docs doctrine (042-common-docs, 037-living-docs, curation tactics, mermaid/plantuml)WP06
T031Author divio-type-discipline styleguideWP06
T032Author plain-language styleguideWP06
T033Author docs-accessibility styleguideWP06
T034Author publication-authority styleguideWP06
T035Author docs-freshness-sla styleguideWP06
T036documentation/governance-profile.yaml (id: documentation) + actions/*/index.yamlWP06
T037Reference-wire existing research doctrine (003-decision-doc, dialectic/premortem/reverse-speccing, situational-assessment)WP07
T038Author spike-timebox-policy procedure (closes researcher-robbie.agent.yaml:60 dangler)WP07
T039Author research-citation-discipline styleguideWP07
T040research/governance-profile.yaml (id: research)WP07
T041research/actions/*/index.yamlWP07
T042DRG resolvability check for the 2 net-new artifacts; terminology guardWP07
T043Reference-wire existing plan doctrine (problem-decomposition, moscow, eisenhower, adr-drafting, 031-context-aware-design, DDD/deep-module/c4 paradigms, planning-and-tracking)WP08
T044plan/governance-profile.yaml (id: plan)WP08
T045Create plan/actions/ indices (create_intent — plan has no actions dir today)WP08
T046FR-004 verification: plan's empty grain resolves empty without errorWP08
T047DRG resolvability + terminology guardWP08
T048Port runtime.charter-lint.decay → lint-report.json delta upward (doctrine tree)WP09
T049Port blocking: false flag upwardWP09
T050Port the occurrence_map.yaml bulk-edit NOTE comment block upwardWP09
T051Confirm doctrine ≡ specify_cli content post-reconcile (pre-flip parity baseline)WP09
T052ConfigResult → ExpectedArtifactManifest adapter (model_validate(parsed)) + cache preserveWP10
T053Transitional dossier-parity scaffold (sw-dev required-artifact set unchanged)WP10
T054Flip load_manifest:178 onto the doctrine treeWP10
T055Update the 5 consumer sites (indexer.py:77,130,307,359, namespace.py:98)WP10
T056Delete specify_cli/missions/*/expected-artifacts.yaml copies (reconcile-before-flip)WP10
T057Populate ResolvedMissionType.expected_artifacts slot (out-of-map into WP03's file)WP10
T058Delete the transitional dossier-parity scaffold; ruff/mypy cleanWP10
T059Route step-contract resolution through the artefact bundleWP11
T060Pin exact anchors + migrate the specify_cli step-contract readersWP11
T061Transitional step-parity scaffold (sw-dev step behaviour unchanged)WP11
T062Delete the step-parity scaffold; SC-007 (0 remaining specify_cli readers)WP11
T063ruff/mypy clean; NFR-001 recordedWP11
T064Enduring non-leakage test (URN-normalized denylist, doctrine-module)WP12
T065Non-vacuity twin (shared action name — sw-dev DOES resolve the denylist)WP12
T066Determinism test (byte-identical on identical inputs, NFR-007)WP12
T067Integration test: real documentation/research/plan mission resolves domain governance, zero sw-devWP12
T068Unknown-typed hard-fail + typeless-degrade on every path (SC-002)WP12
T069Delete ALL transitional parity scaffolds; assert 0 remain at merge (NFR-005)WP12
T070Terminal regenerate-graph --check (single owner); terminology guardWP12

Work Packages

WP01 — Retire the inert governance_refs field (FR-010)

Goal: Remove the dead, dangling per-type governance_refs field (model + all four mission_types/*.yaml + CLI display + drg.py:169 comment) so governance resolves only through the live path — no danglers. Behaviour-preserving tidy; independent Lane-A root.

  • ✅ T001 Remove governance_refs from MissionType model (extra="forbid") (WP01)
  • ✅ T002 Strip governance_refs: + dangling DIR-010/011 from all four mission_types/*.yaml (WP01)
  • ✅ T003 Update mission_type.py CLI display (drop the governance_refs rows) (WP01)
  • ✅ T004 Fix the drg.py:169 comment; re-point any DRG parity guard (WP01)
  • ✅ T005 Update the ~3–4 tests that asserted the field; ruff/mypy clean (WP01)

Prompt: tasks/WP01-retire-governance-refs.md · deps: none

WP02 — Single boundary-safe mission-type canonicalizer (FR-012, FR-001, FR-003, C-001)

Goal: One canonicalizer both layers import (charter ↛ specify_cli); remove the sw-dev governance default at mission.py get_mission_type:575; retire dead get_mission_key:548; classify the ~13 callers. Lane-B root.

  • ✅ T006 New boundary-safe charter/mission_type_key.py canonicalizer (WP02)
  • ✅ T007 Remove sw-dev governance default at mission.py get_mission_type:575 (WP02)
  • ✅ T008 Route get_deliverables_path:605 through the canonicalizer (WP02)
  • ✅ T009 Retire the dead get_mission_key:548 (WP02)
  • ✅ T010 Classify the ~13 get_mission_type callers (has-meta → unaffected; typeless → neutral degrade) (WP02)
  • ✅ T011 RED-first: typeless caller degrades (never sw-dev); ruff/mypy clean (WP02)

Prompt: tasks/WP02-mission-type-canonicalizer.md · deps: none

WP03 — Unified resolver seam (ResolvedMissionType bundle) (FR-006, FR-013, FR-004, FR-003, FR-009, NFR-007, NFR-001)

Goal: One charter-mediated resolve_mission_type_context both consumers converge on; ordered ResolvedGovernance; URN-normalized cross-grain disjointness; subsume-and-migrate 3 functions + 7 live call-sites (load_profile = export-removal, 0 callers); ≤ 15 complexity; preserve the existing UnknownMissionTypeError; transitional sw-dev parity scaffold deleted at WP end.

  • ✅ T012 ResolvedMissionType / ResolvedGovernance ordered bundle types (WP03)
  • ✅ T013 resolve_mission_type_context resolver + _resolve_* helpers (≤ 15) (WP03)
  • ✅ T014 Subsume resolve_action_sequence/resolve_mission_type_governance/load_profile (WP03)
  • ✅ T015 Migrate all 7 call-sites (incl. mission_type.py:1477) + __all__ + stale doc ref resolver.py:299 (WP03)
  • ✅ T016 URN-normalized cross-grain disjointness guard (FR-013) (WP03)
  • ✅ T017 Preserve the two hard-fail policies + existing UnknownMissionTypeError; FR-004 empty-grain (WP03)
  • ✅ T018 Transitional sw-dev byte-parity scaffold (deleted at WP end); determinism test (WP03)

Prompt: tasks/WP03-unified-resolver-seam.md · deps: WP01, WP02

WP04 — Action-path leak closure (FR-002, FR-001, C-004)

Goal: Rewire the live _load_action_doctrine_bundle:865 off template_set onto meta.json; delete the dead _render_action_scoped/_append_action_doctrine_lines pair + orphan test; split template_set; per-entry degrade; RED-first. Do NOT grow into #2532.

  • ✅ T019 RED-first behavioural test through a shared action name (leak repro) (WP04)
  • ✅ T020 Rewire _load_action_doctrine_bundle:865 off template_set onto meta.json (WP04)
  • ✅ T021 Thread mission_type through build_charter_context:252 + _json:3254 + scope_router:66 (WP04)
  • ✅ T022 Split template_set (kept for template-file selection only, C-004) (WP04)
  • ✅ T023 Delete the dead pair + its orphan test test_context.py:716 (WP04)
  • ✅ T024 Per-entry degrade for mission-less callers (executor.py:270, workflow.py:675); ruff/mypy (WP04)

Prompt: tasks/WP04-action-path-leak-closure.md · deps: WP03

WP05 — Per-type project override channel (FR-011, C-005)

Goal: Ride the doctrine/base.py overlay (builtin → org → project); add id to MissionTypeProfile; BaseDoctrineRepository[MissionTypeProfile] subclass in charter/; set the id == mission_type invariant; precedence + collision test.

  • ✅ T025 Add id to MissionTypeProfile (out-of-map into WP03's file, sequential) (WP05)
  • ✅ T026 BaseDoctrineRepository[MissionTypeProfile] subclass in charter/ (WP05)
  • ✅ T027 Wire the overlay (doctrine/base.py) builtin → org → project for the profile (WP05)
  • ✅ T028 Precedence + collision test (project override wins, warning reported) (WP05)
  • ✅ T029 id == mission_type invariant asserted; ruff/mypy clean (WP05)

Prompt: tasks/WP05-per-type-override-channel.md · deps: WP03

WP06 — Author documentation governance content (FR-005, FR-002, NFR-006)

Goal: Reference-wire existing docs doctrine + author 5 net-new styleguides; populate documentation/governance-profile.yaml (id: documentation) + action indices. Heaviest content WP.

  • ✅ T030 Reference-wire existing docs doctrine (042-common-docs, 037-living-docs, curation tactics, toolguides) (WP06)
  • ✅ T031 Author divio-type-discipline styleguide (WP06)
  • ✅ T032 Author plain-language styleguide (WP06)
  • ✅ T033 Author docs-accessibility styleguide (WP06)
  • ✅ T034 Author publication-authority styleguide (WP06)
  • ✅ T035 Author docs-freshness-sla styleguide (WP06)
  • ✅ T036 documentation/governance-profile.yaml (id: documentation) + actions/*/index.yaml (WP06)

Prompt: tasks/WP06-documentation-governance-content.md · deps: WP03, WP05

WP07 — Author research governance content (FR-005)

Goal: Reference-wire existing research doctrine + author spike-timebox-policy procedure (closes the researcher-robbie.agent.yaml:60 dangler) and research-citation-discipline styleguide; populate research/governance-profile.yaml (id: research) + action indices.

  • ✅ T037 Reference-wire existing research doctrine (003-decision-doc, dialectic/premortem/reverse-speccing, situational-assessment) (WP07)
  • ✅ T038 Author spike-timebox-policy procedure (closes researcher-robbie.agent.yaml:60 dangler) (WP07)
  • ✅ T039 Author research-citation-discipline styleguide (WP07)
  • ✅ T040 research/governance-profile.yaml (id: research) (WP07)
  • ✅ T041 research/actions/*/index.yaml (WP07)
  • ✅ T042 DRG resolvability check for the 2 net-new artifacts; terminology guard (WP07)

Prompt: tasks/WP07-research-governance-content.md · deps: WP03, WP05

WP08 — Author plan governance content (FR-005)

Goal: Mostly reference-only planning doctrine; populate plan/governance-profile.yaml (id: plan); create plan/actions/ indices (plan has no actions dir today); FR-004 empty-grain verified. Lightest content WP.

  • ✅ T043 Reference-wire existing plan doctrine (problem-decomposition, moscow, eisenhower, adr-drafting, 031-context-aware-design, DDD/deep-module/c4, planning-and-tracking) (WP08)
  • ✅ T044 plan/governance-profile.yaml (id: plan) (WP08)
  • ✅ T045 Create plan/actions/ indices (create_intent — plan has no actions dir today) (WP08)
  • ✅ T046 FR-004 verification: plan's empty grain resolves empty without error (WP08)
  • ✅ T047 DRG resolvability + terminology guard (WP08)

Prompt: tasks/WP08-plan-governance-content.md · deps: WP03, WP05

WP09 — Reconcile expected-artifacts upward into the doctrine tree (FR-007)

Goal: Port the specify_cli-ahead deltas (charter-lint.decay→lint-report.json, blocking:false, occurrence_map NOTE block; #2628) UPWARD into the doctrine copies. Detachable Lane-D root; hard predecessor of WP10.

  • ✅ T048 Port runtime.charter-lint.decay → lint-report.json delta upward (doctrine tree) (WP09)
  • ✅ T049 Port blocking: false flag upward (WP09)
  • ✅ T050 Port the occurrence_map.yaml bulk-edit NOTE comment block upward (WP09)
  • ✅ T051 Confirm doctrine ≡ specify_cli content post-reconcile (pre-flip parity baseline) (WP09)

Prompt: tasks/WP09-gates-reconcile-upward.md · deps: none

WP10 — Adapt + flip the dossier gate reader onto the doctrine tree (FR-007, NFR-004, NFR-001)

Goal: ConfigResult → ExpectedArtifactManifest adapter + cache; flip load_manifest:178 to the doctrine tree; delete the specify_cli copies; populate the bundle's expected_artifacts slot; transitional parity scaffold deleted at WP end. Detachable — NOT a WP12 dep.

  • ✅ T052 ConfigResult → ExpectedArtifactManifest adapter (model_validate(parsed)) + cache preserve (WP10)
  • ✅ T053 Transitional dossier-parity scaffold (sw-dev required-artifact set unchanged) (WP10)
  • ✅ T054 Flip load_manifest:178 onto the doctrine tree (WP10)
  • ✅ T055 Update the 5 consumer sites (indexer.py:77,130,307,359, namespace.py:98) (WP10)
  • ✅ T056 Delete specify_cli/missions/*/expected-artifacts.yaml copies (reconcile-before-flip) (WP10)
  • ✅ T057 Populate ResolvedMissionType.expected_artifacts slot (out-of-map into WP03's file) (WP10)
  • ✅ T058 Delete the transitional dossier-parity scaffold; ruff/mypy clean (WP10)

Prompt: tasks/WP10-gates-migrate-flip.md · deps: WP09, WP03, WP05

WP11 — Route step-contract resolution through the artefact bundle (FR-008)

Goal: Route step-contract resolution through the artefact bundle; pin + migrate the specify_cli step-contract readers (SC-007 → 0); transitional step-parity scaffold deleted at WP end.

  • ✅ T059 Route step-contract resolution through the artefact bundle (WP11)
  • ✅ T060 Pin exact anchors + migrate the specify_cli step-contract readers (WP11)
  • ✅ T061 Transitional step-parity scaffold (sw-dev step behaviour unchanged) (WP11)
  • ✅ T062 Delete the step-parity scaffold; SC-007 (0 remaining specify_cli readers) (WP11)
  • ✅ T063 ruff/mypy clean; NFR-001 recorded (WP11)

Prompt: tasks/WP11-steps-swap.md · deps: WP03

WP12 — Enforcement gates + test posture (the join) (NFR-005, NFR-006, NFR-007, C-002)

Goal: Enduring non-leakage (URN denylist) + non-vacuity twin (shared action name) + determinism + integration + hard-fail/degrade tests; delete ALL transitional scaffolds; single terminal regenerate-graph --check. Deps WP03, WP04, WP06, WP07, WP08, WP11 — NOT WP09/WP10.

  • ✅ T064 Enduring non-leakage test (URN-normalized denylist, doctrine-module) (WP12)
  • ✅ T065 Non-vacuity twin (shared action name — sw-dev DOES resolve the denylist) (WP12)
  • ✅ T066 Determinism test (byte-identical on identical inputs, NFR-007) (WP12)
  • ✅ T067 Integration test: real documentation/research/plan mission resolves domain governance, zero sw-dev (WP12)
  • ✅ T068 Unknown-typed hard-fail + typeless-degrade on every path (SC-002) (WP12)
  • ✅ T069 Delete ALL transitional parity scaffolds; assert 0 remain at merge (NFR-005) (WP12)
  • ✅ T070 Terminal regenerate-graph --check (single owner); terminology guard (WP12)

Prompt: tasks/WP12-enforcement-test-posture.md · deps: WP03, WP04, WP06, WP07, WP08, WP11

WP01/WP03 mission_type.py coordination (RESOLVED — post-squad)

src/specify_cli/cli/commands/mission_type.py is in WP01's owned_files (it removes the governance_refs display rows at :1486,1505). WP03 also migrates the resolve_action_sequence call-site at :1477 (+ its import) when it subsumes that function. Two edits, one file, two WPs.

Resolution (squad-directed): a WP01 → WP03 dependency edge was added. WP01 lands first and leaves the file quiet; WP03 then makes the :1477 migration as a justified out-of-map, sequential edit (the file stays out of WP03's owned_files, so finalize --validate-only reports no false overlap, while the dependency edge serializes the two edits). This honours the subsume-and-migrate discipline (C-002 / ADR) — no thin resolve_action_sequence wrapper is kept to dodge the edit; no caller is operator-deferred.

Transitional-scaffold ledger (must be empty at merge — NFR-005 / C-002)

ScaffoldAdded inDeleted in
sw-dev governance byte-parityWP03 (T018)WP03 (same WP, final commit)
dossier required-artifact parityWP10 (T053)WP10 (T058)
step-contract parityWP11 (T061)WP11 (T062)

WP12 (T069) asserts zero parity/snapshot scaffolds referencing the removed path survive merge.