feat(content): 资讯发布时间/来源/发布人规范 + 点赞/留言/分享互动体系

- published_at 发布时间（迁移0022）：运营端不限、园区端禁早于3天前，双方均支持定时发布；C端/大屏到点才可见
- 发布人：运营端可设（留空显示官方）、园区端固定园区名只能填来源
- 点赞/分享/留言（迁移0023-0025）：content_likes 去重点赞、like_count/share_count、留言回复+评论点赞
- 各出口（内容/留言/入驻资料 docs）统一 resolve_url 生成 CDN 直链；入库统一 to_object_path 对象路径

alembic/versions/0022_content_published_at.py

@@ -0,0 +1,23 @@
+"""内容发布时间：published_at（支持定时发布与运营端回填）
+
+Revision ID: 0022_content_published_at
+Revises: 0021_park_profile
+Create Date: 2026-08-28
+"""
+from __future__ import annotations
+
+import sqlalchemy as sa
+from alembic import op
+
+revision = "0022_content_published_at"
+down_revision = "0021_park_profile"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.add_column("content_items", sa.Column("published_at", sa.String(), nullable=False, server_default=""))
+
+
+def downgrade() -> None:
+    op.drop_column("content_items", "published_at")

alembic/versions/0023_content_likes.py

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+"""资讯点赞：like_count 计数 + content_likes 去重表
+
+Revision ID: 0023_content_likes
+Revises: 0022_content_published_at
+Create Date: 2026-08-28
+"""
+from __future__ import annotations
+
+import sqlalchemy as sa
+from alembic import op
+
+revision = "0023_content_likes"
+down_revision = "0022_content_published_at"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.add_column("content_items", sa.Column("like_count", sa.Integer(), nullable=False, server_default="0"))
+    op.create_table(
+        "content_likes",
+        sa.Column("id", sa.String(), primary_key=True),
+        sa.Column("content_id", sa.String(), nullable=False, server_default="", index=True),
+        sa.Column("user_id", sa.String(), nullable=False, server_default="", index=True),
+        sa.Column("created_at", sa.String(), nullable=False, server_default=""),
+    )
+
+
+def downgrade() -> None:
+    op.drop_table("content_likes")
+    op.drop_column("content_items", "like_count")

alembic/versions/0024_content_share_count.py

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+"""资讯分享计数：share_count
+
+Revision ID: 0024_content_share_count
+Revises: 0023_content_likes
+Create Date: 2026-08-28
+"""
+from __future__ import annotations
+
+import sqlalchemy as sa
+from alembic import op
+
+revision = "0024_content_share_count"
+down_revision = "0023_content_likes"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.add_column("content_items", sa.Column("share_count", sa.Integer(), nullable=False, server_default="0"))
+
+
+def downgrade() -> None:
+    op.drop_column("content_items", "share_count")

alembic/versions/0025_comment_reply_like.py

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+"""留言区微信化：回复（reply_to）+ 评论点赞（like_count / comment_likes）
+
+Revision ID: 0025_comment_reply_like
+Revises: 0024_content_share_count
+Create Date: 2026-08-28
+"""
+from __future__ import annotations
+
+import sqlalchemy as sa
+from alembic import op
+
+revision = "0025_comment_reply_like"
+down_revision = "0024_content_share_count"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.add_column("content_comments", sa.Column("reply_to", sa.String(), nullable=False, server_default=""))
+    op.add_column("content_comments", sa.Column("like_count", sa.Integer(), nullable=False, server_default="0"))
+    op.create_table(
+        "content_comment_likes",
+        sa.Column("id", sa.String(), primary_key=True),
+        sa.Column("comment_id", sa.String(), nullable=False, server_default="", index=True),
+        sa.Column("user_id", sa.String(), nullable=False, server_default="", index=True),
+        sa.Column("created_at", sa.String(), nullable=False, server_default=""),
+    )
+
+
+def downgrade() -> None:
+    op.drop_table("content_comment_likes")
+    op.drop_column("content_comments", "like_count")
+    op.drop_column("content_comments", "reply_to")