上线版: 产品表单统一+form嵌套修复+用户管理+部署+三套叙事

- 产品编辑入口统一走 ProductFormFull(卖点/风格/人群/品牌词全字段);
  修复开任务页 <form> 套 <form> 致"编辑产品"报错、改不了、跳回首个产品
- dashboard 入口卡片对齐实际路由: 系统管理(/config) 与 工作配置(/settings) 分开;
  settings ?tab=products 直达改用挂载后读 URL, 消除 hydration mismatch
- 新增用户管理(users API/admin service/改密页) + alembic 022/023/024
- 上线部署: Dockerfile / docker-compose.prod+https / nginx https / .env.example
- A8 三套正交叙事(痛点/场景/成分背书) + beige 调色去AI化 + 飞轮 text_import 高权重信号

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

backend/alembic/versions/023_benchmark_link_and_screenshot_text.py

@@ -0,0 +1,47 @@
+"""023 benchmark link and screenshot fields use text
+
+Revision ID: 023
+Revises: 022
+Create Date: 2026-06-29
+"""
+from alembic import op
+import sqlalchemy as sa
+
+revision = "023"
+down_revision = "022"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.alter_column(
+        "benchmark_notes",
+        "screenshot_url",
+        existing_type=sa.String(length=512),
+        type_=sa.Text(),
+        existing_nullable=True,
+    )
+    op.alter_column(
+        "benchmark_notes",
+        "link_url",
+        existing_type=sa.String(length=512),
+        type_=sa.Text(),
+        existing_nullable=True,
+    )
+
+
+def downgrade():
+    op.alter_column(
+        "benchmark_notes",
+        "link_url",
+        existing_type=sa.Text(),
+        type_=sa.String(length=512),
+        existing_nullable=True,
+    )
+    op.alter_column(
+        "benchmark_notes",
+        "screenshot_url",
+        existing_type=sa.Text(),
+        type_=sa.String(length=512),
+        existing_nullable=True,
+    )