feat(governance): batch queue stale km reviews

apps/api/src/models/governance.py

@@ -272,6 +272,65 @@ class KnowledgeStaleOwnerReviewResponse(BaseModel):
     generated_at: datetime
 
 
+class KnowledgeStaleOwnerReviewBatchQueueRequest(BaseModel):
+    project_id: str = Field(default="awoooi", min_length=1, max_length=64)
+    priority_tiers: list[Literal["P0", "P1", "P2"]] = Field(
+        default_factory=lambda: ["P0", "P1"],
+        min_length=1,
+        max_length=3,
+    )
+    limit: int = Field(default=10, ge=1, le=50)
+    owner: str = Field(default="operator_console", min_length=1, max_length=100)
+    owner_note: str | None = Field(default=None, max_length=240)
+    dry_run: bool = False
+    dry_run_plan_fingerprint: str | None = Field(
+        default=None,
+        max_length=80,
+        description="Dry-run response fingerprint that must be echoed before queueing a batch.",
+    )
+
+
+class KnowledgeStaleOwnerReviewBatchItem(BaseModel):
+    entry_id: str
+    title: str
+    priority_tier: Literal["P0", "P1", "P2"]
+    recommended_action: Literal[
+        "refresh_with_evidence",
+        "owner_review",
+        "archive_or_supersede",
+    ]
+    status: Literal["would_queue", "queued", "already_queued", "skipped"]
+    reason: str | None = None
+    governance_event_id: str | None = None
+    dispatch_id: str | None = None
+    workflow_stage: str
+
+
+class KnowledgeStaleOwnerReviewBatchQueueResponse(BaseModel):
+    schema_version: str = "km_stale_owner_review_batch_v1"
+    project_id: str
+    status: Literal["dry_run", "queued", "noop_already_queued"]
+    owner: str
+    owner_note: str | None = None
+    dry_run: bool
+    priority_tiers: list[str]
+    requested_limit: int
+    candidate_count: int
+    queued_count: int
+    already_queued_count: int
+    skipped_count: int
+    batch_governance_event_id: str | None = None
+    batch_dispatch_id: str | None = None
+    workflow_stage: str
+    writes_km: bool = False
+    writes_governance_audit: bool
+    stale_ratio_snapshot: KnowledgeReviewDraftStaleRatioSnapshot | None = None
+    dry_run_plan_fingerprint: str | None = None
+    items: list[KnowledgeStaleOwnerReviewBatchItem] = Field(default_factory=list)
+    next_action: str = "owner_review_stale_km_batch"
+    generated_at: datetime
+
+
 class KnowledgeStaleOwnerReviewCompleteRequest(BaseModel):
     dispatch_id: str | None = Field(
         default=None,