implement post metadata import and views. implemented series paging and reader view.

migrations/versions/d26012201_add_post_metadata.py

@@ -0,0 +1,46 @@
+"""Add PostMetadata table for storing post information from external platforms
+
+Revision ID: d26012201
+Revises: c26012001
+Create Date: 2026-01-22
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'd26012201'
+down_revision = 'c26012001'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # Create post_metadata table
+    op.create_table(
+        'post_metadata',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('tag_id', sa.Integer(), nullable=False),
+        sa.Column('platform', sa.String(length=64), nullable=False),
+        sa.Column('post_id', sa.String(length=64), nullable=False),
+        sa.Column('artist', sa.String(length=255), nullable=True),
+        sa.Column('title', sa.String(length=512), nullable=True),
+        sa.Column('description', sa.Text(), nullable=True),
+        sa.Column('source_url', sa.String(length=1024), nullable=True),
+        sa.Column('attachment_count', sa.Integer(), nullable=True),
+        sa.Column('published_at', sa.DateTime(), nullable=True),
+        sa.Column('created_at', sa.DateTime(), nullable=True),
+        sa.Column('updated_at', sa.DateTime(), nullable=True),
+        sa.ForeignKeyConstraint(['tag_id'], ['tag.id'], ondelete='CASCADE'),
+        sa.PrimaryKeyConstraint('id'),
+        sa.UniqueConstraint('tag_id')
+    )
+    op.create_index(op.f('ix_post_metadata_platform'), 'post_metadata', ['platform'], unique=False)
+    op.create_index('ix_post_metadata_platform_post_id', 'post_metadata', ['platform', 'post_id'], unique=False)
+
+
+def downgrade():
+    op.drop_index('ix_post_metadata_platform_post_id', table_name='post_metadata')
+    op.drop_index(op.f('ix_post_metadata_platform'), table_name='post_metadata')
+    op.drop_table('post_metadata')