diff --git a/.agents/skills/sce-decision/SKILL.md b/.agents/skills/sce-decision/SKILL.md
index 543044c4d..789d792ba 100644
--- a/.agents/skills/sce-decision/SKILL.md
+++ b/.agents/skills/sce-decision/SKILL.md
@@ -1,17 +1,17 @@
 ---
 name: sce-decision
 description: >
-  Write one immutable ADR for one qualifying system-wide decision
+  Write one immutable ADR for one decision already qualified by context synchronization
 ---
 
 # SCE Decision
 
 ## Purpose
 
-Write exactly one architecture decision record for one qualifying system-wide
-important decision during successful task context synchronization. Return
-a deterministic internal handoff to the invoking synchronization phase. Do not
-render an independent user-visible response.
+Write exactly one architecture decision record for one decision already qualified
+by successful task context synchronization. Return a deterministic internal
+handoff to the invoking synchronization phase. Do not render an independent
+user-visible response.
 
 ## Input
 
@@ -28,28 +28,22 @@ synchronization. It must identify:
 Do not accept raw workflow arguments, ordinary phase state, multiple decisions,
 or direct user invocation. Do not reconstruct missing material facts.
 
-## Decision gate
-
-A decision qualifies only when it establishes or changes a system-wide important
-constraint involving at least one of:
-
-- System boundaries or ownership.
-- Public or cross-domain interfaces.
-- Data models or persistence.
-- Compatibility contracts.
-- Security posture.
-- Deployment or distribution strategy.
-- A major dependency.
-- A similarly durable constraint that is costly or risky to reverse.
-
-Routine implementation details, local refactors, naming and formatting choices,
-temporary experiments, and easily reversible choices do not qualify. When the
-request does not demonstrate the threshold, return `not_qualified` (or
-`skipped` when the caller deliberately skips the gate); do not create an ADR
-merely because context synchronization occurred. A nonqualifying or skipped
-result is non-blocking, so the invoking synchronization phase continues
-normally. Reserve `blocked` for missing, contradictory, or otherwise unsafe
-decision input or history.
+## Qualification handoff
+
+The invoking task context synchronization phase solely owns the decision
+qualification threshold and decides whether this skill is invoked. Treat the
+caller's gate result as authoritative; do not redefine, broaden, or independently
+rerun that threshold here.
+
+Require the request to state why the caller qualified the decision and include
+supporting evidence. If the request explicitly represents a nonqualifying gate
+outcome, return `not_qualified` (or `skipped` when the caller deliberately skipped
+the gate) without writing an ADR. If a claimed qualification is unsupported by
+its supplied evidence, return `not_qualified`. Missing, contradictory, or
+otherwise unsafe material input remains `blocked`.
+
+`not_qualified` and `skipped` are non-blocking to the invoking synchronization
+phase.
 
 ## Workflow
 
@@ -91,21 +85,10 @@ deterministic slug; never add an arbitrary counter and never overwrite a record.
 
 ### 4. Write the ADR
 
-Create exactly one file using `references/adr-template.md` and these rules:
-
-- **Context** states the forces and constraint that made a decision necessary.
-- **Decision** states one resulting choice, not a list of unrelated choices.
-- **Rationale** explains why this path best satisfies the constraints.
-- **Alternatives considered** names credible alternatives and why they were not
-  selected.
-- **Compatibility and risks** states compatibility effects, migration concerns,
-  and material risks with mitigations.
-- **Guardrails** records durable limits that keep the decision narrow.
-- **Consequences** records positive and negative resulting constraints.
-- **Follow-up** lists only established work or conditions; use `None.` when no
-  follow-up is established.
-- **References** links the plan, relevant tasks, evidence, current-state context,
-  related ADRs, and any superseded ADR.
+Read `references/adr-template.md` before writing. It is the sole authority for
+the persisted ADR schema and section semantics. Populate that template from the
+validated request and evidence; do not restate or invent a parallel section
+contract here.
 
 Use repository-relative Markdown links where practical. Describe durable truth,
 not the implementation session. Do not edit current-state context; the invoking
diff --git a/.agents/skills/sce-decision/references/adr-template.md b/.agents/skills/sce-decision/references/adr-template.md
index 31891d448..8c2b06e77 100644
--- a/.agents/skills/sce-decision/references/adr-template.md
+++ b/.agents/skills/sce-decision/references/adr-template.md
@@ -1,7 +1,7 @@
 # Decision: {concise decision title}
 
 Date: {YYYY-MM-DD}
-Status: {Proposed|Accepted|Rejected|Deprecated|Superseded}
+Status: {validated decision status}
 Plan: `{context/plans/plan-name.md}`
 Task: `{task-id or comma-separated task IDs}`
 Supersedes: `{context/decisions/YYYY-MM-DD-prior-decision.md}`
@@ -14,7 +14,7 @@ Omit `Task` or `Supersedes` only when it does not apply. Do not omit `Plan`.
 
 ## Decision
 
-{Exactly one durable system-wide choice.}
+{Exactly one durable choice already qualified by task context synchronization.}
 
 ## Rationale
 
diff --git a/.agents/skills/sce-next-task/references/context-sync.md b/.agents/skills/sce-next-task/references/context-sync.md
index fb330bb6d..057043313 100644
--- a/.agents/skills/sce-next-task/references/context-sync.md
+++ b/.agents/skills/sce-next-task/references/context-sync.md
@@ -157,6 +157,10 @@ verified classification and explain the difference in the report.
 
 ## 3.5 Record qualifying architecture decisions
 
+This subsection is the sole owner of decision qualification. The threshold below
+decides whether `sce-decision` is invoked; the decision skill consumes that gate
+result and must not restate or broaden it.
+
 During this successful synchronization, determine whether the completed change
 establishes or changes a system-wide important constraint involving one or more
 of:
diff --git a/.claude/skills/sce-decision/SKILL.md b/.claude/skills/sce-decision/SKILL.md
index 8b5d378ef..540a51aeb 100644
--- a/.claude/skills/sce-decision/SKILL.md
+++ b/.claude/skills/sce-decision/SKILL.md
@@ -1,7 +1,7 @@
 ---
 name: sce-decision
 description: >
-  Write one immutable ADR for one qualifying system-wide decision
+  Write one immutable ADR for one decision already qualified by context synchronization
 compatibility: claude
 ---
 
@@ -9,10 +9,10 @@ compatibility: claude
 
 ## Purpose
 
-Write exactly one architecture decision record for one qualifying system-wide
-important decision during successful task context synchronization. Return
-a deterministic internal handoff to the invoking synchronization phase. Do not
-render an independent user-visible response.
+Write exactly one architecture decision record for one decision already qualified
+by successful task context synchronization. Return a deterministic internal
+handoff to the invoking synchronization phase. Do not render an independent
+user-visible response.
 
 ## Input
 
@@ -29,28 +29,22 @@ synchronization. It must identify:
 Do not accept raw workflow arguments, ordinary phase state, multiple decisions,
 or direct user invocation. Do not reconstruct missing material facts.
 
-## Decision gate
-
-A decision qualifies only when it establishes or changes a system-wide important
-constraint involving at least one of:
-
-- System boundaries or ownership.
-- Public or cross-domain interfaces.
-- Data models or persistence.
-- Compatibility contracts.
-- Security posture.
-- Deployment or distribution strategy.
-- A major dependency.
-- A similarly durable constraint that is costly or risky to reverse.
-
-Routine implementation details, local refactors, naming and formatting choices,
-temporary experiments, and easily reversible choices do not qualify. When the
-request does not demonstrate the threshold, return `not_qualified` (or
-`skipped` when the caller deliberately skips the gate); do not create an ADR
-merely because context synchronization occurred. A nonqualifying or skipped
-result is non-blocking, so the invoking synchronization phase continues
-normally. Reserve `blocked` for missing, contradictory, or otherwise unsafe
-decision input or history.
+## Qualification handoff
+
+The invoking task context synchronization phase solely owns the decision
+qualification threshold and decides whether this skill is invoked. Treat the
+caller's gate result as authoritative; do not redefine, broaden, or independently
+rerun that threshold here.
+
+Require the request to state why the caller qualified the decision and include
+supporting evidence. If the request explicitly represents a nonqualifying gate
+outcome, return `not_qualified` (or `skipped` when the caller deliberately skipped
+the gate) without writing an ADR. If a claimed qualification is unsupported by
+its supplied evidence, return `not_qualified`. Missing, contradictory, or
+otherwise unsafe material input remains `blocked`.
+
+`not_qualified` and `skipped` are non-blocking to the invoking synchronization
+phase.
 
 ## Workflow
 
@@ -92,21 +86,10 @@ deterministic slug; never add an arbitrary counter and never overwrite a record.
 
 ### 4. Write the ADR
 
-Create exactly one file using `references/adr-template.md` and these rules:
-
-- **Context** states the forces and constraint that made a decision necessary.
-- **Decision** states one resulting choice, not a list of unrelated choices.
-- **Rationale** explains why this path best satisfies the constraints.
-- **Alternatives considered** names credible alternatives and why they were not
-  selected.
-- **Compatibility and risks** states compatibility effects, migration concerns,
-  and material risks with mitigations.
-- **Guardrails** records durable limits that keep the decision narrow.
-- **Consequences** records positive and negative resulting constraints.
-- **Follow-up** lists only established work or conditions; use `None.` when no
-  follow-up is established.
-- **References** links the plan, relevant tasks, evidence, current-state context,
-  related ADRs, and any superseded ADR.
+Read `references/adr-template.md` before writing. It is the sole authority for
+the persisted ADR schema and section semantics. Populate that template from the
+validated request and evidence; do not restate or invent a parallel section
+contract here.
 
 Use repository-relative Markdown links where practical. Describe durable truth,
 not the implementation session. Do not edit current-state context; the invoking
diff --git a/.claude/skills/sce-decision/references/adr-template.md b/.claude/skills/sce-decision/references/adr-template.md
index 31891d448..8c2b06e77 100644
--- a/.claude/skills/sce-decision/references/adr-template.md
+++ b/.claude/skills/sce-decision/references/adr-template.md
@@ -1,7 +1,7 @@
 # Decision: {concise decision title}
 
 Date: {YYYY-MM-DD}
-Status: {Proposed|Accepted|Rejected|Deprecated|Superseded}
+Status: {validated decision status}
 Plan: `{context/plans/plan-name.md}`
 Task: `{task-id or comma-separated task IDs}`
 Supersedes: `{context/decisions/YYYY-MM-DD-prior-decision.md}`
@@ -14,7 +14,7 @@ Omit `Task` or `Supersedes` only when it does not apply. Do not omit `Plan`.
 
 ## Decision
 
-{Exactly one durable system-wide choice.}
+{Exactly one durable choice already qualified by task context synchronization.}
 
 ## Rationale
 
diff --git a/.claude/skills/sce-next-task/references/context-sync.md b/.claude/skills/sce-next-task/references/context-sync.md
index fb330bb6d..057043313 100644
--- a/.claude/skills/sce-next-task/references/context-sync.md
+++ b/.claude/skills/sce-next-task/references/context-sync.md
@@ -157,6 +157,10 @@ verified classification and explain the difference in the report.
 
 ## 3.5 Record qualifying architecture decisions
 
+This subsection is the sole owner of decision qualification. The threshold below
+decides whether `sce-decision` is invoked; the decision skill consumes that gate
+result and must not restate or broaden it.
+
 During this successful synchronization, determine whether the completed change
 establishes or changes a system-wide important constraint involving one or more
 of:
diff --git a/.pi/skills/sce-decision/SKILL.md b/.pi/skills/sce-decision/SKILL.md
index 543044c4d..789d792ba 100644
--- a/.pi/skills/sce-decision/SKILL.md
+++ b/.pi/skills/sce-decision/SKILL.md
@@ -1,17 +1,17 @@
 ---
 name: sce-decision
 description: >
-  Write one immutable ADR for one qualifying system-wide decision
+  Write one immutable ADR for one decision already qualified by context synchronization
 ---
 
 # SCE Decision
 
 ## Purpose
 
-Write exactly one architecture decision record for one qualifying system-wide
-important decision during successful task context synchronization. Return
-a deterministic internal handoff to the invoking synchronization phase. Do not
-render an independent user-visible response.
+Write exactly one architecture decision record for one decision already qualified
+by successful task context synchronization. Return a deterministic internal
+handoff to the invoking synchronization phase. Do not render an independent
+user-visible response.
 
 ## Input
 
@@ -28,28 +28,22 @@ synchronization. It must identify:
 Do not accept raw workflow arguments, ordinary phase state, multiple decisions,
 or direct user invocation. Do not reconstruct missing material facts.
 
-## Decision gate
-
-A decision qualifies only when it establishes or changes a system-wide important
-constraint involving at least one of:
-
-- System boundaries or ownership.
-- Public or cross-domain interfaces.
-- Data models or persistence.
-- Compatibility contracts.
-- Security posture.
-- Deployment or distribution strategy.
-- A major dependency.
-- A similarly durable constraint that is costly or risky to reverse.
-
-Routine implementation details, local refactors, naming and formatting choices,
-temporary experiments, and easily reversible choices do not qualify. When the
-request does not demonstrate the threshold, return `not_qualified` (or
-`skipped` when the caller deliberately skips the gate); do not create an ADR
-merely because context synchronization occurred. A nonqualifying or skipped
-result is non-blocking, so the invoking synchronization phase continues
-normally. Reserve `blocked` for missing, contradictory, or otherwise unsafe
-decision input or history.
+## Qualification handoff
+
+The invoking task context synchronization phase solely owns the decision
+qualification threshold and decides whether this skill is invoked. Treat the
+caller's gate result as authoritative; do not redefine, broaden, or independently
+rerun that threshold here.
+
+Require the request to state why the caller qualified the decision and include
+supporting evidence. If the request explicitly represents a nonqualifying gate
+outcome, return `not_qualified` (or `skipped` when the caller deliberately skipped
+the gate) without writing an ADR. If a claimed qualification is unsupported by
+its supplied evidence, return `not_qualified`. Missing, contradictory, or
+otherwise unsafe material input remains `blocked`.
+
+`not_qualified` and `skipped` are non-blocking to the invoking synchronization
+phase.
 
 ## Workflow
 
@@ -91,21 +85,10 @@ deterministic slug; never add an arbitrary counter and never overwrite a record.
 
 ### 4. Write the ADR
 
-Create exactly one file using `references/adr-template.md` and these rules:
-
-- **Context** states the forces and constraint that made a decision necessary.
-- **Decision** states one resulting choice, not a list of unrelated choices.
-- **Rationale** explains why this path best satisfies the constraints.
-- **Alternatives considered** names credible alternatives and why they were not
-  selected.
-- **Compatibility and risks** states compatibility effects, migration concerns,
-  and material risks with mitigations.
-- **Guardrails** records durable limits that keep the decision narrow.
-- **Consequences** records positive and negative resulting constraints.
-- **Follow-up** lists only established work or conditions; use `None.` when no
-  follow-up is established.
-- **References** links the plan, relevant tasks, evidence, current-state context,
-  related ADRs, and any superseded ADR.
+Read `references/adr-template.md` before writing. It is the sole authority for
+the persisted ADR schema and section semantics. Populate that template from the
+validated request and evidence; do not restate or invent a parallel section
+contract here.
 
 Use repository-relative Markdown links where practical. Describe durable truth,
 not the implementation session. Do not edit current-state context; the invoking
diff --git a/.pi/skills/sce-decision/references/adr-template.md b/.pi/skills/sce-decision/references/adr-template.md
index 31891d448..8c2b06e77 100644
--- a/.pi/skills/sce-decision/references/adr-template.md
+++ b/.pi/skills/sce-decision/references/adr-template.md
@@ -1,7 +1,7 @@
 # Decision: {concise decision title}
 
 Date: {YYYY-MM-DD}
-Status: {Proposed|Accepted|Rejected|Deprecated|Superseded}
+Status: {validated decision status}
 Plan: `{context/plans/plan-name.md}`
 Task: `{task-id or comma-separated task IDs}`
 Supersedes: `{context/decisions/YYYY-MM-DD-prior-decision.md}`
@@ -14,7 +14,7 @@ Omit `Task` or `Supersedes` only when it does not apply. Do not omit `Plan`.
 
 ## Decision
 
-{Exactly one durable system-wide choice.}
+{Exactly one durable choice already qualified by task context synchronization.}
 
 ## Rationale
 
diff --git a/.pi/skills/sce-next-task/references/context-sync.md b/.pi/skills/sce-next-task/references/context-sync.md
index fb330bb6d..057043313 100644
--- a/.pi/skills/sce-next-task/references/context-sync.md
+++ b/.pi/skills/sce-next-task/references/context-sync.md
@@ -157,6 +157,10 @@ verified classification and explain the difference in the report.
 
 ## 3.5 Record qualifying architecture decisions
 
+This subsection is the sole owner of decision qualification. The threshold below
+decides whether `sce-decision` is invoked; the decision skill consumes that gate
+result and must not restate or broaden it.
+
 During this successful synchronization, determine whether the completed change
 establishes or changes a system-wide important constraint involving one or more
 of:
diff --git a/config/pkl/base/decision-skill.pkl b/config/pkl/base/decision-skill.pkl
index a18192a8f..af32ce7e5 100644
--- a/config/pkl/base/decision-skill.pkl
+++ b/config/pkl/base/decision-skill.pkl
@@ -5,7 +5,7 @@ import "workflow-content.pkl" as model
 /// user-facing command or prompt routes to this skill.
 
 local SKILL_SLUG = "sce-decision"
-local SKILL_DESCRIPTION = "Write one immutable ADR for one qualifying system-wide decision"
+local SKILL_DESCRIPTION = "Write one immutable ADR for one decision already qualified by context synchronization"
 
 local skillText = (extraFrontmatterLines: String) -> """
 ---
@@ -18,10 +18,10 @@ description: >
 
 ## Purpose
 
-Write exactly one architecture decision record for one qualifying system-wide
-important decision during successful task context synchronization. Return
-a deterministic internal handoff to the invoking synchronization phase. Do not
-render an independent user-visible response.
+Write exactly one architecture decision record for one decision already qualified
+by successful task context synchronization. Return a deterministic internal
+handoff to the invoking synchronization phase. Do not render an independent
+user-visible response.
 
 ## Input
 
@@ -38,28 +38,22 @@ synchronization. It must identify:
 Do not accept raw workflow arguments, ordinary phase state, multiple decisions,
 or direct user invocation. Do not reconstruct missing material facts.
 
-## Decision gate
-
-A decision qualifies only when it establishes or changes a system-wide important
-constraint involving at least one of:
-
-- System boundaries or ownership.
-- Public or cross-domain interfaces.
-- Data models or persistence.
-- Compatibility contracts.
-- Security posture.
-- Deployment or distribution strategy.
-- A major dependency.
-- A similarly durable constraint that is costly or risky to reverse.
-
-Routine implementation details, local refactors, naming and formatting choices,
-temporary experiments, and easily reversible choices do not qualify. When the
-request does not demonstrate the threshold, return `not_qualified` (or
-`skipped` when the caller deliberately skips the gate); do not create an ADR
-merely because context synchronization occurred. A nonqualifying or skipped
-result is non-blocking, so the invoking synchronization phase continues
-normally. Reserve `blocked` for missing, contradictory, or otherwise unsafe
-decision input or history.
+## Qualification handoff
+
+The invoking task context synchronization phase solely owns the decision
+qualification threshold and decides whether this skill is invoked. Treat the
+caller's gate result as authoritative; do not redefine, broaden, or independently
+rerun that threshold here.
+
+Require the request to state why the caller qualified the decision and include
+supporting evidence. If the request explicitly represents a nonqualifying gate
+outcome, return `not_qualified` (or `skipped` when the caller deliberately skipped
+the gate) without writing an ADR. If a claimed qualification is unsupported by
+its supplied evidence, return `not_qualified`. Missing, contradictory, or
+otherwise unsafe material input remains `blocked`.
+
+`not_qualified` and `skipped` are non-blocking to the invoking synchronization
+phase.
 
 ## Workflow
 
@@ -101,21 +95,10 @@ deterministic slug; never add an arbitrary counter and never overwrite a record.
 
 ### 4. Write the ADR
 
-Create exactly one file using `references/adr-template.md` and these rules:
-
-- **Context** states the forces and constraint that made a decision necessary.
-- **Decision** states one resulting choice, not a list of unrelated choices.
-- **Rationale** explains why this path best satisfies the constraints.
-- **Alternatives considered** names credible alternatives and why they were not
-  selected.
-- **Compatibility and risks** states compatibility effects, migration concerns,
-  and material risks with mitigations.
-- **Guardrails** records durable limits that keep the decision narrow.
-- **Consequences** records positive and negative resulting constraints.
-- **Follow-up** lists only established work or conditions; use `None.` when no
-  follow-up is established.
-- **References** links the plan, relevant tasks, evidence, current-state context,
-  related ADRs, and any superseded ADR.
+Read `references/adr-template.md` before writing. It is the sole authority for
+the persisted ADR schema and section semantics. Populate that template from the
+validated request and evidence; do not restate or invent a parallel section
+contract here.
 
 Use repository-relative Markdown links where practical. Describe durable truth,
 not the implementation session. Do not edit current-state context; the invoking
@@ -163,7 +146,7 @@ local templateText = """
 # Decision: {concise decision title}
 
 Date: {YYYY-MM-DD}
-Status: {Proposed|Accepted|Rejected|Deprecated|Superseded}
+Status: {validated decision status}
 Plan: `{context/plans/plan-name.md}`
 Task: `{task-id or comma-separated task IDs}`
 Supersedes: `{context/decisions/YYYY-MM-DD-prior-decision.md}`
@@ -176,7 +159,7 @@ Omit `Task` or `Supersedes` only when it does not apply. Do not omit `Plan`.
 
 ## Decision
 
-{Exactly one durable system-wide choice.}
+{Exactly one durable choice already qualified by task context synchronization.}
 
 ## Rationale
 
diff --git a/config/pkl/base/workflow-context-sync.pkl b/config/pkl/base/workflow-context-sync.pkl
index 0e60d9f7c..88c230fb1 100644
--- a/config/pkl/base/workflow-context-sync.pkl
+++ b/config/pkl/base/workflow-context-sync.pkl
@@ -65,6 +65,10 @@ local skillText = (role: SyncRole, mode: workflow.WorkflowRenderMode) ->
   role.frontmatter.apply(mode) + "\n\n" + skillBody.apply(role, mode)
 
 local decisionGate = (evidenceSource: String, mode: workflow.WorkflowRenderMode) -> """
+    This subsection is the sole owner of decision qualification. The threshold below
+    decides whether `sce-decision` is invoked; the decision skill consumes that gate
+    result and must not restate or broaden it.
+
     During this successful synchronization, determine whether the completed change
     establishes or changes a system-wide important constraint involving one or more
     of:
@@ -1275,6 +1279,10 @@ verified classification and explain the difference in the report.
 
 ## 3.5 Record qualifying architecture decisions
 
+This subsection is the sole owner of decision qualification. The threshold below
+decides whether `sce-decision` is invoked; the decision skill consumes that gate
+result and must not restate or broaden it.
+
 During this successful synchronization, determine whether the completed change
 establishes or changes a system-wide important constraint involving one or more
 of:
diff --git a/config/pkl/renderers/generation-contract-check.pkl b/config/pkl/renderers/generation-contract-check.pkl
index 9cdda173e..e6a3ecc1d 100644
--- a/config/pkl/renderers/generation-contract-check.pkl
+++ b/config/pkl/renderers/generation-contract-check.pkl
@@ -202,15 +202,7 @@ local expectedDecisionDocumentPaths = new Mapping {
 }
 
 local requiredDecisionSkillTokens = new Listing {
-  "qualifying system-wide"
-  "System boundaries or ownership"
-  "Public or cross-domain interfaces"
-  "Data models or persistence"
-  "Compatibility contracts"
-  "Security posture"
-  "Deployment or distribution strategy"
-  "major dependency"
-  "Routine implementation details"
+  "already qualified"
   "YYYY-MM-DD-<decision-slug>.md"
   "`Proposed`"
   "`Accepted`"
@@ -220,11 +212,18 @@ local requiredDecisionSkillTokens = new Listing {
   "otherwise default"
   "Never edit an ADR whose status is `Accepted`"
   "creates a new dated ADR"
-  "exactly one file"
+  "references/adr-template.md"
+  "exactly one ADR"
   "`written`"
   "`blocked`"
 }
 
+local requiredDecisionOwnershipSkillTokens = new Listing {
+  "## Qualification handoff"
+  "Treat the caller's gate result as authoritative"
+  "sole authority for\nthe persisted ADR schema and section semantics"
+}
+
 local requiredDecisionWorkflowTokens = new Listing {
   "Record qualifying architecture decisions"
   "System boundaries or ownership"
@@ -241,6 +240,42 @@ local requiredDecisionWorkflowTokens = new Listing {
   "On `blocked`"
 }
 
+local requiredDecisionTemplateTokens = new Listing {
+  "## Context"
+  "## Decision"
+  "## Rationale"
+  "## Alternatives considered"
+  "## Compatibility and risks"
+  "## Guardrails"
+  "## Consequences"
+  "## Follow-up"
+  "## References"
+}
+
+local forbiddenDecisionSkillGateTokens = new Listing {
+  "System boundaries or ownership"
+  "Public or cross-domain interfaces"
+  "Data models or persistence"
+  "Compatibility contracts"
+  "Security posture"
+  "Deployment or distribution strategy"
+  "A major dependency"
+  "Routine implementation details, local refactors"
+  "similarly durable constraint that is costly or risky to reverse"
+}
+
+local forbiddenDecisionSkillTemplateRestatementTokens = new Listing {
+  "**Context** states"
+  "**Decision** states"
+  "**Rationale** explains"
+  "**Alternatives considered** names"
+  "**Compatibility and risks** states"
+  "**Guardrails** records"
+  "**Consequences** records"
+  "**Follow-up** lists"
+  "**References** links"
+}
+
 local requiredHandoverSkillTokens = new Listing {
   "selects **writer mode**"
   "selects **loader mode**"
@@ -418,18 +453,6 @@ local requiredPhaseReferencesBySkill = new Mapping {
   }
 }
 
-local requiredDecisionTemplateTokens = new Listing {
-  "## Context"
-  "## Decision"
-  "## Rationale"
-  "## Alternatives considered"
-  "## Compatibility and risks"
-  "## Guardrails"
-  "## Consequences"
-  "## Follow-up"
-  "## References"
-}
-
 local forbiddenWorkflowReferenceTokens = new Listing {
   "sce-context-load"
   "sce-plan-authoring"
@@ -599,6 +622,42 @@ local assertDecisionContent = (documents: Mapping) ->
   ) "generated decision package content: complete"
   else throw("generated decision package is missing a required ADR rule or template section")
 
+hidden assertDecisionGateTemplateOwnership = (artifacts: Mapping) ->
+  let (contexts = new Listing {
+    artifacts["config/.pi/skills/sce-next-task/references/context-sync.md"]
+    artifacts["config/.claude/skills/sce-next-task/references/context-sync.md"]
+    artifacts["config/.agents/skills/sce-next-task/references/context-sync.md"]
+  })
+    let (skills = new Listing {
+      artifacts["config/.pi/skills/sce-decision/SKILL.md"]
+      artifacts["config/.claude/skills/sce-decision/SKILL.md"]
+      artifacts["config/.agents/skills/sce-decision/SKILL.md"]
+    })
+      let (templates = new Listing {
+        artifacts["config/.pi/skills/sce-decision/references/adr-template.md"]
+        artifacts["config/.claude/skills/sce-decision/references/adr-template.md"]
+        artifacts["config/.agents/skills/sce-decision/references/adr-template.md"]
+      })
+        if (
+          contexts.every((text) -> text.contains("sole owner of decision qualification"))
+          && skills.every((text) ->
+            text.contains("## Qualification handoff")
+            && text.contains("caller's gate result as authoritative")
+            && text.contains("sole authority for")
+            && text.contains("persisted ADR schema and section semantics")
+            && !text.contains("## Decision gate")
+            && !text.contains("**Context** states")
+            && !text.contains("**Decision** states")
+          )
+          && templates.every((text) ->
+            text.contains("Status: {validated decision status}")
+            && text.contains("## Context")
+            && text.contains("## Decision")
+            && text.contains("## Rationale")
+            && !text.contains("Proposed|Accepted|Rejected|Deprecated|Superseded")
+          )
+        ) "sce-decision: context sync owns qualification and ADR template owns persisted section semantics"
+        else throw("decision qualification must be owned by tracked context-sync outputs while sce-decision consumes the gate and adr-template.md owns persisted ADR schema")
 local assertHandoverContent = (documents: Mapping) ->
   if (
     documents.length == 4
@@ -1167,6 +1226,7 @@ contractChecks {
   ["opencode-decision-permission"] = assertOpenCodeDecisionPermission.apply(opencode.agents)
   ["decision-package-paths"] = assertDecisionDocumentPaths.apply(decisionSkillDocuments)
   ["decision-package-content"] = assertDecisionContent.apply(decisionSkillDocuments)
+  ["decision-gate-template-ownership"] = assertDecisionGateTemplateOwnership.apply(generatedArtifacts)
   ["handover-package-content"] = assertHandoverContent.apply(handoverSkillDocuments)
   ["handover-schema-completeness-ownership"] = assertHandoverSchemaCompletenessOwnership.apply(workflowDocuments)
   ["brownfield-package-content"] = assertBrownfieldContent.apply(brownfieldSkillDocuments)
diff --git a/context/plans/compress-workflow-execution-preamble.md b/context/plans/compress-workflow-execution-preamble.md
index 445d91870..99f9fca82 100644
--- a/context/plans/compress-workflow-execution-preamble.md
+++ b/context/plans/compress-workflow-execution-preamble.md
@@ -427,3 +427,28 @@ The two additional root edits replace existing text without increasing line coun
   - Verify: `pkl eval config/pkl/renderers/generation-contract-check.pkl`,
     `nix run .#pkl-check-generated`, targeted ownership checks, and `git diff --check`.
   - Context synchronization: synced.
+
+
+## Follow-up: decision qualification and ADR-template ownership
+
+- [x] T10: `Deduplicate decision gate and ADR section semantics` (status:done)
+  - Scope: task context-sync decision qualification, the standalone `sce-decision`
+    package, `references/adr-template.md`, canonical Pkl, generated semantic checks,
+    tracked Pi/Claude/Codex mirrors, and the ownership table.
+  - Ownership after change: `decisionGate` in `workflow-context-sync.pkl` solely owns
+    the qualification threshold and invocation decision. `sce-decision/SKILL.md`
+    consumes the caller's gate result and owns ADR lifecycle/history/path/result
+    behavior. `references/adr-template.md` solely owns the persisted ADR schema and
+    section semantics.
+  - Behavior preserved: only successful task synchronization invokes `sce-decision`;
+    routine/reversible changes remain nonqualifying; one request still writes or
+    reuses at most one ADR; allowed status/default, immutability, supersession,
+    collision handling, nonblocking `not_qualified`/`skipped`, blocking unsafe input,
+    and internal result shapes remain unchanged.
+  - Result: the selected decision skill/template plus next-task context-sync documents
+    shrink by 13 Markdown lines per tracked target, 39
+    across Pi/Claude/Codex.
+  - Verify: `pkl eval config/pkl/renderers/generation-contract-check.pkl`,
+    `nix run .#pkl-check-generated`, targeted ownership checks across all tracked
+    mirrors, and `git diff --check`.
+  - Context synchronization: synced.
diff --git a/context/sce/dedup-ownership-table.md b/context/sce/dedup-ownership-table.md
index 4d6d8833a..6dd351197 100644
--- a/context/sce/dedup-ownership-table.md
+++ b/context/sce/dedup-ownership-table.md
@@ -31,7 +31,9 @@
 | Handover persisted schema and completeness validity | `references/handover-template.md` generated from `renderPersistedFormatBody` in `workflow-handover.pkl` | Writer composes and validates against this contract; loader validates against the same contract; `sce-handover/SKILL.md` owns routing, path checks, read/write boundaries, and terminal layout selection without restating required-section or content-validity rules | intentional/keep |
 | Compact workflow execution contract | `executionContract` in `workflow-content.pkl` | Inline in change-to-plan, next-task, commit, validate, and handover entrypoints on all four targets; no extra runtime read | shared rendering, preserved behavior |
 | Workflow routing | Six command documents in the workflow modules | Thin OpenCode Plan/Code agents | intentional/keep |
-| Standalone ADR writing contract | `decision-skill.pkl` | Cross-target `sce-decision` package; successful task synchronization invokes it through the shared decision gate | intentional/keep |
+| Decision qualification gate | `decisionGate` in `workflow-context-sync.pkl` | Successful task context synchronization decides qualification and invokes `sce-decision` once per qualifying decision; `sce-decision` consumes the caller's gate result without restating or broadening the threshold | intentional/keep |
+| Standalone ADR lifecycle, history, path, and result contract | `sce-decision/SKILL.md` generated from `skillText` in `decision-skill.pkl` | Cross-target internal `sce-decision` package; consumes one already-qualified request, validates status/history/path safety, writes or reuses one ADR, and returns the internal result | intentional/keep |
+| Persisted ADR schema and section semantics | `references/adr-template.md` generated from `templateText` in `decision-skill.pkl` | `sce-decision` reads and populates the template at the write boundary without restating the section schema or field semantics | intentional/keep |
 
 ## Guardrails