feat(admin): Phase 4 质量词 Admin(平台单层) — QualityWord + 生成侧读配置(无配置回落) + 质量词页

后端:apps/ai QualityWord(stage/slot/text/sort/enabled)+ migration;services.py quality_words/quality_suffix,
4 个 builder 接入(person/model_tryon/storyboard/video)无配置回落原写死值零回归;adminpanel CRUD + 审计。
前端:adminApi quality 系列;Admin 质量词页(按 stage 分组卡 + 编辑模式开关 + 行内增改删 chip)。
测试:adminpanel 23 + accounts 22 = 45 单测过(CRUD/权限/生成读配置+回落/停用词不取);
无头 e2e _admin-p4.mjs 4 断言过 + 0 console error + live 库零残留;tsc+build 绿。
注:apps.ai 3 个 image_edit 路由测试失败为进场前既有(已 stash 比对 HEAD 同样失败),非本 Phase 引入。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

core/backend/apps/ai/migrations/0009_qualityword.py

@@ -0,0 +1,31 @@
+# Generated by Django 5.1.15 on 2026-06-19 13:43
+
+import uuid
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('ai', '0008_aitask_ai_aitask_team_id_570138_idx'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='QualityWord',
+            fields=[
+                ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('stage', models.CharField(choices=[('person', '人物立绘'), ('model_tryon', '模特上身图'), ('storyboard', '故事板'), ('video', '视频')], max_length=24)),
+                ('slot', models.CharField(default='quality', max_length=24)),
+                ('text', models.CharField(max_length=200)),
+                ('sort', models.IntegerField(default=0)),
+                ('enabled', models.BooleanField(default=True)),
+            ],
+            options={
+                'ordering': ['stage', 'sort', 'created_at'],
+                'indexes': [models.Index(fields=['stage', 'slot'], name='ai_qualityw_stage_891a12_idx')],
+            },
+        ),
+    ]