feat(governance): archive duplicate km review drafts

apps/api/src/models/governance.py

@@ -146,6 +146,33 @@ class KnowledgeReviewDraftDedupeResponse(BaseModel):
     generated_at: datetime
 
 
+class KnowledgeReviewDraftArchiveRequest(BaseModel):
+    canonical_entry_id: str = Field(min_length=1, max_length=120)
+    duplicate_entry_ids: list[str] = Field(min_length=1, max_length=100)
+    owner: str = Field(default="operator_console", min_length=1, max_length=100)
+    owner_approved: bool = False
+    dry_run: bool = False
+
+
+class KnowledgeReviewDraftArchiveResponse(BaseModel):
+    schema_version: str = "km_review_draft_archive_v1"
+    governance_event_id: str
+    canonical_entry_id: str
+    requested_duplicate_entry_ids: list[str]
+    archived_entry_ids: list[str] = Field(default_factory=list)
+    skipped_entry_ids: list[str] = Field(default_factory=list)
+    would_archive_entry_ids: list[str] = Field(default_factory=list)
+    status: Literal["dry_run", "archived", "noop_already_archived"]
+    owner: str
+    owner_approved: bool
+    dry_run: bool
+    writes_km: bool
+    writes_governance_audit: bool
+    audit_dispatch_id: str | None = None
+    next_action: str = "stale_ratio_recheck"
+    generated_at: datetime
+
+
 # =============================================================================
 # Endpoint 3: summary
 # =============================================================================