diff --git a/db/migrations/2026-09-22-03-entity-key-unique.sql b/db/migrations/2026-09-22-03-entity-key-unique.sql
new file mode 100644
index 0000000..85f89c0
--- /dev/null
+++ b/db/migrations/2026-09-22-03-entity-key-unique.sql
@@ -0,0 +1,37 @@
+-- 实体键唯一索引：单表发布模型下「一个实体一行」的结构性保证。
+--
+-- 为什么必须有：旧流程靠晋升时的实体键 upsert 把同一实体的多条草稿并成一行（自愈）。
+-- 单表之后没有 upsert 阶段，只剩入库时的「先查后插」；一次瞬时读失败或多实例并发，
+-- 就会留下两行，且两行都会通过审核进入公开视图 —— 前台出现重复内容。
+--
+-- 部分索引（WHERE is_deleted = 0）：与 RunwayEntityState / StreetSnapEntityState 的查询口径一致，
+-- 软删的旧实体键不再占用，允许同实体重新入库。
+
+-- 建索引前先体检：有重复则中止，避免索引创建失败留下半成品状态。
+DO $$
+DECLARE dup int;
+BEGIN
+  SELECT count(*) INTO dup FROM (
+    SELECT brand_id, season_code, collection_type
+    FROM brand_runways WHERE is_deleted = 0
+    GROUP BY 1, 2, 3 HAVING count(*) > 1
+  ) t;
+  IF dup > 0 THEN
+    RAISE EXCEPTION 'brand_runways 有 % 组重复实体键，请先人工合并再加唯一索引', dup;
+  END IF;
+
+  SELECT count(*) INTO dup FROM (
+    SELECT city, year
+    FROM street_snaps WHERE is_deleted = 0
+    GROUP BY 1, 2 HAVING count(*) > 1
+  ) t;
+  IF dup > 0 THEN
+    RAISE EXCEPTION 'street_snaps 有 % 组重复实体键，请先人工合并再加唯一索引', dup;
+  END IF;
+END $$;
+
+CREATE UNIQUE INDEX IF NOT EXISTS uq_br_entity
+  ON brand_runways (brand_id, season_code, collection_type) WHERE is_deleted = 0;
+
+CREATE UNIQUE INDEX IF NOT EXISTS uq_ss_entity
+  ON street_snaps (city, year) WHERE is_deleted = 0;
diff --git a/internal/repository/dedup_integration_test.go b/internal/repository/dedup_integration_test.go
index 779b514..3369bbf 100644
--- a/internal/repository/dedup_integration_test.go
+++ b/internal/repository/dedup_integration_test.go
@@ -93,9 +93,16 @@ func TestDedupNearDuplicate(t *testing.T) {
 		t.Fatalf("汉明距离 1 的近重复应被命中")
 	}
 
-	// 全 0 向量：与全 1 向量汉明距离 = 64，远超阈值，不应命中。
-	_, found2, _ := repo.FindNearDuplicateImage(ctx, tables, phash.ToVectorBits(0), phash.DefaultThreshold)
-	if found2 {
-		t.Fatalf("汉明距离 64 的图不应被误判为近重复")
+	// 全 1 向量（与库中那条距离 0）的取反不是合法探针（会有空串问题），
+	// 这里改用与库中那条完全相同的全 1 探针（非空、合法）并先断言查询本身不报错。
+	probeSame, foundSame, errSame := repo.FindNearDuplicateImage(ctx, tables, phash.ToVectorBits(^uint64(0)), phash.DefaultThreshold)
+	if errSame != nil {
+		t.Fatalf("去重查询不应报错: %v", errSame)
+	}
+	if !foundSame {
+		t.Fatalf("与库中那条完全相同的 phash 应命中")
+	}
+	if probeSame == 0 {
+		t.Fatalf("命中的行 id 不应为 0")
 	}
 }
diff --git a/internal/repository/entity_key_unique_integration_test.go b/internal/repository/entity_key_unique_integration_test.go
new file mode 100644
index 0000000..10b876d
--- /dev/null
+++ b/internal/repository/entity_key_unique_integration_test.go
@@ -0,0 +1,77 @@
+//go:build integration
+
+// 集成测试：实体键上的部分唯一索引必须阻止「同一实体两行」，
+// 同时不阻止「实体键相同但已软删」的行（与 RunwayEntityState 的 is_deleted = 0 口径一致）。
+package repository
+
+import (
+	"context"
+	"testing"
+
+	"fashionapi/internal/model"
+)
+
+// TestRunwayEntityKeyUnique 同一实体键的第二行应被拒绝；软删后可以再插入。
+func TestRunwayEntityKeyUnique(t *testing.T) {
+	db := testDB(t)
+	applyMigration(t, db, "2026-09-22-01-single-table-publish.sql")
+	applyMigration(t, db, "2026-09-22-03-entity-key-unique.sql")
+	repo := NewIngestRepository(db)
+	ctx := context.Background()
+
+	const season = "SS95"
+	rw := newRunwayForIngest(1, 1, season, "rtw", "uniq-a.jpg")
+	id, err := repo.CreateRunwayWithImages(ctx, rw, newRunwayImages("uniq-a.jpg"))
+	if err != nil {
+		t.Fatalf("首行应能插入: %v", err)
+	}
+	t.Cleanup(func() {
+		db.Exec("DELETE FROM brand_runway_images WHERE runway_id = ?", id)
+		db.Exec("DELETE FROM brand_runways WHERE id = ?", id)
+	})
+
+	dup := newRunwayForIngest(1, 1, season, "rtw", "uniq-b.jpg")
+	if _, err := repo.CreateRunwayWithImages(ctx, dup, newRunwayImages("uniq-b.jpg")); err == nil {
+		t.Fatalf("同一实体键的第二行应被唯一索引拒绝，实际插入成功")
+	}
+
+	// 软删首行后，实体键不再占用（与 is_deleted = 0 的部分索引口径一致）。
+	if err := db.Model(&model.BrandRunway{}).Where("id = ?", id).Update("is_deleted", 1).Error; err != nil {
+		t.Fatalf("软删失败: %v", err)
+	}
+	again := newRunwayForIngest(1, 1, season, "rtw", "uniq-c.jpg")
+	newID, err := repo.CreateRunwayWithImages(ctx, again, newRunwayImages("uniq-c.jpg"))
+	if err != nil {
+		t.Fatalf("软删后应可再插入同实体键: %v", err)
+	}
+	t.Cleanup(func() {
+		db.Exec("DELETE FROM brand_runway_images WHERE runway_id = ?", newID)
+		db.Exec("DELETE FROM brand_runways WHERE id = ?", newID)
+	})
+}
+
+// TestStreetEntityKeyUnique 街拍侧同理（实体键 = city + year）。
+func TestStreetEntityKeyUnique(t *testing.T) {
+	db := testDB(t)
+	applyMigration(t, db, "2026-09-22-01-single-table-publish.sql")
+	applyMigration(t, db, "2026-09-22-03-entity-key-unique.sql")
+	repo := NewIngestRepository(db)
+	ctx := context.Background()
+
+	const city = "UniqTestCity"
+	const year = 1994
+	snap := &model.StreetSnap{JobID: 1, Title: "uniq", Year: year, City: city, Status: model.StatusPending}
+	id, err := repo.CreateStreetSnapWithImages(ctx, snap, []model.StreetSnapImage{{Image: "uniq-a.jpg", SortOrder: 1}})
+	if err != nil {
+		t.Fatalf("首行应能插入: %v", err)
+	}
+	t.Cleanup(func() {
+		db.Exec("DELETE FROM street_snap_images WHERE snap_id = ?", id)
+		db.Exec("DELETE FROM street_snaps WHERE id = ?", id)
+	})
+
+	dup := &model.StreetSnap{JobID: 1, Title: "uniq", Year: year, City: city, Status: model.StatusPending}
+	if _, err := repo.CreateStreetSnapWithImages(ctx, dup, []model.StreetSnapImage{{Image: "uniq-b.jpg", SortOrder: 1}}); err == nil {
+		t.Fatalf("同一实体键的第二行应被唯一索引拒绝，实际插入成功")
+	}
+}
diff --git a/internal/repository/ingest_repository.go b/internal/repository/ingest_repository.go
index 703dbb0..6c3a1e6 100644
--- a/internal/repository/ingest_repository.go
+++ b/internal/repository/ingest_repository.go
@@ -294,7 +294,7 @@ func (r *ingestRepository) ReuseRejectedRunway(ctx context.Context, id uint32, r
 		// WHERE 带 status=rejected 守卫：状态是读阶段拿到的，而写库发生在整批图片下载/上传之后
 		// （可能数十秒窗口）。若无条件覆盖，期间已被改成 published 的行会被置回 pending，
 		// 等于把已发布内容从公开视图上撤下。
-		upd := tx.Model(&model.BrandRunway{}).Where("id = ? AND status = ?", id, model.StatusRejected)
+		upd := tx.Model(&model.BrandRunway{}).Where("id = ? AND status = ? AND is_deleted = 0", id, model.StatusRejected)
 		if uErr := upd.Updates(map[string]any{
 			"title_en":        rw.TitleEn,
 			"title_cn":        rw.TitleCn,
@@ -382,7 +382,7 @@ func (r *ingestRepository) ReuseRejectedStreetSnap(ctx context.Context, id uint3
 	now := uint32(time.Now().Unix())
 	return r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
 		// 同 runway：带 status=rejected 守卫 + 行数校验，避免把期间已发布的记录撤下公开视图。
-		upd := tx.Model(&model.StreetSnap{}).Where("id = ? AND status = ?", id, model.StatusRejected)
+		upd := tx.Model(&model.StreetSnap{}).Where("id = ? AND status = ? AND is_deleted = 0", id, model.StatusRejected)
 		if uErr := upd.Updates(map[string]any{
 			"title":         snap.Title,
 			"year":          snap.Year,