feat(governance): expose km draft dedupe plan

apps/web/src/app/[locale]/awooop/work-items/page.tsx

@@ -250,6 +250,30 @@ type KnowledgeReviewDraftGroup = {
   duplicateCount: number;
 };
 
+type KnowledgeReviewDraftDedupeGroup = {
+  governance_event_id: string;
+  canonical_entry_id: string;
+  canonical_title: string;
+  canonical_updated_at?: string | null;
+  preferred_source: "dispatch_context" | "latest_review_draft";
+  duplicate_entry_ids: string[];
+  duplicate_count: number;
+  total_entries: number;
+  suggested_action: string;
+  owner_action: string;
+  writes_on_read: boolean;
+  can_archive_without_owner_approval: boolean;
+};
+
+type KnowledgeReviewDraftDedupeResponse = {
+  schema_version?: string;
+  total_review_drafts: number;
+  event_group_total: number;
+  duplicate_draft_total: number;
+  groups: KnowledgeReviewDraftDedupeGroup[];
+  generated_at?: string | null;
+};
+
 type DriftFingerprintState = {
   schema_version?: string;
   namespace?: string;
@@ -331,6 +355,7 @@ type Telemetry = {
   governanceQueue: GovernanceQueueResponse | null;
   governanceKnowledgeQueue: GovernanceQueueResponse | null;
   knowledgeReviewDrafts: KnowledgeListResponse | null;
+  knowledgeReviewDedupe: KnowledgeReviewDraftDedupeResponse | null;
   channelEvents: RecentEventsResponse | null;
   eventRecurrence: RecurrenceResponse | null;
   slo: SloResponse | null;
@@ -698,6 +723,23 @@ function draftGroupForQueueItem(
   return groups.find((group) => group.eventId === item.governance_event_id) ?? null;
 }
 
+function draftDedupeGroupForQueueItem(
+  item: GovernanceQueueItem,
+  groups: KnowledgeReviewDraftDedupeGroup[]
+) {
+  return groups.find((group) => group.governance_event_id === item.governance_event_id) ?? null;
+}
+
+function kmDedupeActionKey(action?: string | null) {
+  if (
+    action === "owner_review_canonical_then_archive_duplicates" ||
+    action === "review_canonical_and_archive_duplicate_drafts"
+  ) {
+    return action;
+  }
+  return "unknown";
+}
+
 function buildWorkItems(
   telemetry: Telemetry,
   t: ReturnType<typeof useTranslations>
@@ -717,6 +759,8 @@ function buildWorkItems(
     (sum, group) => sum + group.duplicateCount,
     0
   );
+  const knowledgeDedupeDuplicates =
+    telemetry.knowledgeReviewDedupe?.duplicate_draft_total ?? knowledgeDuplicateDrafts;
   const remediationQueue = telemetry.slo?.adr100?.verification_coverage?.remediation_queue;
   const remediationTotal = remediationQueue?.total ?? 0;
   const remediationReadyForAi = remediationQueue?.ready_for_ai ?? 0;
@@ -939,8 +983,10 @@ function buildWorkItems(
               action: latestKnowledgeDispatch.next_action ?? latestKnowledgeDispatch.proposed_action ?? "--",
             }),
             t("evidence.knowledgeDrafts", {
-              drafts: telemetry.knowledgeReviewDrafts?.total ?? 0,
-              duplicates: knowledgeDuplicateDrafts,
+              drafts: telemetry.knowledgeReviewDedupe?.total_review_drafts
+                ?? telemetry.knowledgeReviewDrafts?.total
+                ?? 0,
+              duplicates: knowledgeDedupeDuplicates,
             }),
           ]
         : [t("evidence.knowledgeEmpty")],
@@ -1381,14 +1427,21 @@ function RecurrenceWorkQueuePanel({
 function KnowledgeGovernancePanel({
   queue,
   reviewDrafts,
+  dedupe,
 }: {
   queue: GovernanceQueueResponse | null;
   reviewDrafts: KnowledgeListResponse | null;
+  dedupe: KnowledgeReviewDraftDedupeResponse | null;
 }) {
   const t = useTranslations("awooop.workItems.knowledgeGovernance");
   const items = queue?.items ?? [];
   const draftGroups = groupKnowledgeReviewDrafts(reviewDrafts, items);
-  const duplicateDraftCount = draftGroups.reduce((sum, group) => sum + group.duplicateCount, 0);
+  const dedupeGroups = dedupe?.groups ?? [];
+  const duplicateDraftCount = (
+    dedupe?.duplicate_draft_total
+    ?? draftGroups.reduce((sum, group) => sum + group.duplicateCount, 0)
+  );
+  const draftTotal = dedupe?.total_review_drafts ?? reviewDrafts?.total ?? 0;
   const activeCount = items.filter((item) =>
     ["pending", "dispatched", "executing"].includes(item.dispatch_status)
   ).length;
@@ -1417,7 +1470,7 @@ function KnowledgeGovernancePanel({
             {t("review", { count: reviewCount })}
           </span>
           <span className="border border-[#d8d3c7] bg-white px-2 py-0.5">
-            {t("drafts", { count: reviewDrafts?.total ?? 0 })}
+            {t("drafts", { count: draftTotal })}
           </span>
           <span className="border border-[#d8d3c7] bg-white px-2 py-0.5">
             {t("duplicates", { count: duplicateDraftCount })}
@@ -1444,9 +1497,10 @@ function KnowledgeGovernancePanel({
             const stageKey = governanceKmStageKey(item.workflow_stage);
             const steps = item.workflow_steps ?? [];
             const draftGroup = draftGroupForQueueItem(item, draftGroups);
+            const dedupeGroup = draftDedupeGroupForQueueItem(item, dedupeGroups);
             const draftId = item.kb_draft_entry_id ?? draftGroup?.canonical.id ?? null;
             const workerStatus = item.worker_status ?? "--";
-            const duplicateCount = draftGroup?.duplicateCount ?? 0;
+            const duplicateCount = dedupeGroup?.duplicate_count ?? draftGroup?.duplicateCount ?? 0;
 
             return (
               <article key={item.id} className="bg-white px-4 py-3">
@@ -1507,10 +1561,65 @@ function KnowledgeGovernancePanel({
         </div>
       )}
 
-      {reviewDrafts === null ? (
+      {dedupe === null && reviewDrafts === null ? (
         <div className="border-t border-[#e0ddd4] px-4 py-3 text-xs text-[#8a5a08]">
           {t("draftsUnavailable")}
         </div>
+      ) : dedupeGroups.length > 0 ? (
+        <div className="border-t border-[#e0ddd4] bg-[#faf9f3] px-4 py-3">
+          <div className="mb-3 flex items-center gap-2">
+            <FileText className="h-4 w-4 text-[#5f5b52]" aria-hidden="true" />
+            <h4 className="text-xs font-semibold uppercase tracking-[0.08em] text-[#5f5b52]">
+              {t("draftSectionTitle")}
+            </h4>
+          </div>
+          <div className="grid gap-2 md:grid-cols-2">
+            {dedupeGroups.slice(0, 4).map((group) => (
+              <div
+                key={group.governance_event_id}
+                className="border border-[#e0ddd4] bg-white px-3 py-2 text-xs text-[#5f5b52]"
+              >
+                <div className="flex items-start justify-between gap-3">
+                  <div className="min-w-0">
+                    <p className="truncate font-mono font-semibold text-[#141413]">
+                      {group.governance_event_id}
+                    </p>
+                    <p className="mt-1 truncate text-[#77736a]">{group.canonical_title}</p>
+                  </div>
+                  <span className="shrink-0 border border-[#d8d3c7] bg-[#faf9f3] px-2 py-0.5 font-mono">
+                    {group.canonical_entry_id}
+                  </span>
+                </div>
+                <div className="mt-2 grid gap-1 leading-5">
+                  <p>
+                    {t("draftGroup", {
+                      count: group.total_entries,
+                      duplicates: group.duplicate_count,
+                    })}
+                  </p>
+                  <p>
+                    {t("archiveProposal", {
+                      count: group.duplicate_count,
+                    })}
+                  </p>
+                  <p>
+                    {t("ownerAction", {
+                      action: t(
+                        `ownerActions.${kmDedupeActionKey(group.owner_action)}` as never
+                      ),
+                    })}
+                  </p>
+                  <p>
+                    {t("readOnlyPlan", {
+                      writes: String(group.writes_on_read),
+                      blocked: String(!group.can_archive_without_owner_approval),
+                    })}
+                  </p>
+                </div>
+              </div>
+            ))}
+          </div>
+        </div>
       ) : draftGroups.length > 0 ? (
         <div className="border-t border-[#e0ddd4] bg-[#faf9f3] px-4 py-3">
           <div className="mb-3 flex items-center gap-2">
@@ -1783,6 +1892,7 @@ export default function AwoooPWorkItemsPage() {
     governanceQueue: null,
     governanceKnowledgeQueue: null,
     knowledgeReviewDrafts: null,
+    knowledgeReviewDedupe: null,
     channelEvents: null,
     eventRecurrence: null,
     slo: null,
@@ -1801,6 +1911,7 @@ export default function AwoooPWorkItemsPage() {
     const governanceQueueUrl = `${API_BASE}/api/v1/ai/governance/queue?dispatch_status=pending&size=10`;
     const governanceKnowledgeQueueUrl = `${API_BASE}/api/v1/ai/governance/queue?dispatch_status=all&event_type=knowledge_degradation&size=20`;
     const knowledgeReviewDraftsUrl = `${API_BASE}/api/v1/knowledge?entry_type=auto_runbook&status=review&q=${encodeURIComponent("KM healthcheck")}&limit=100`;
+    const knowledgeReviewDedupeUrl = `${API_BASE}/api/v1/ai/governance/km-review-drafts/dedupe?limit=100`;
     const channelEventsUrl = `${API_BASE}/api/v1/platform/events/recent?project_id=${encodedProjectId}&provider_prefix=alertmanager&limit=20`;
     const recurrenceUrl = `${API_BASE}/api/v1/platform/events/dossier/recurrence?project_id=${encodedProjectId}&limit=100`;
     const sloUrl = `${API_BASE}/api/v1/ai/slo`;
@@ -1813,6 +1924,7 @@ export default function AwoooPWorkItemsPage() {
       governanceQueue,
       governanceKnowledgeQueue,
       knowledgeReviewDrafts,
+      knowledgeReviewDedupe,
       channelEvents,
       eventRecurrence,
       slo,
@@ -1824,6 +1936,7 @@ export default function AwoooPWorkItemsPage() {
       fetchJson<GovernanceQueueResponse>(governanceQueueUrl),
       fetchJson<GovernanceQueueResponse>(governanceKnowledgeQueueUrl),
       fetchJson<KnowledgeListResponse>(knowledgeReviewDraftsUrl),
+      fetchJson<KnowledgeReviewDraftDedupeResponse>(knowledgeReviewDedupeUrl),
       fetchJson<RecentEventsResponse>(channelEventsUrl),
       fetchJson<RecurrenceResponse>(recurrenceUrl),
       fetchJson<SloResponse>(sloUrl),
@@ -1852,6 +1965,7 @@ export default function AwoooPWorkItemsPage() {
       governanceQueue,
       governanceKnowledgeQueue,
       knowledgeReviewDrafts,
+      knowledgeReviewDedupe,
       channelEvents,
       eventRecurrence,
       slo,
@@ -1975,6 +2089,7 @@ export default function AwoooPWorkItemsPage() {
       <KnowledgeGovernancePanel
         queue={telemetry.governanceKnowledgeQueue}
         reviewDrafts={telemetry.knowledgeReviewDrafts}
+        dedupe={telemetry.knowledgeReviewDedupe}
       />
 
       <DriftFingerprintPanel