Pablan, as it stands

Self-hosted knowledge management for SMEs: a split-screen Markdown editor whose sections an LLM refines while you write, and RAG question answering over the documents that result. FastAPI + Postgres/pgvector on the back, SvelteKit on the front, everything OpenAI-compatible and self-hostable. Squashed into a single commit; the development history stays local. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CA43ZJda8Rbp2hKXNy8f6b
2026-09-04 09:21:37 +02:00
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+"""document events audit trail
+
+An append-only history of who changed or reviewed a document, and when.
+Content-bearing events (created / edited) snapshot the Markdown source of truth
+so a past version can be viewed or diffed; the disposable chunks are never
+snapshotted. `actor_id` is SET NULL so the trail outlives its actor's account;
+events cascade with their document.
+
+Revision ID: d5a9c1e3b7f2
+Revises: c4f7a1b2e9d3
+Create Date: 2026-07-22 00:00:00.000000
+
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision: str = "d5a9c1e3b7f2"
+down_revision: Union[str, Sequence[str], None] = "c4f7a1b2e9d3"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    op.create_table(
+        "document_events",
+        sa.Column("document_id", sa.Uuid(), nullable=False),
+        sa.Column("actor_id", sa.Uuid(), nullable=True),
+        sa.Column(
+            "action",
+            sa.Enum(
+                "created",
+                "edited",
+                "published",
+                "archived",
+                "visibility_changed",
+                "review_requested",
+                "review_resolved",
+                name="documenteventaction",
+                native_enum=False,
+                length=32,
+            ),
+            nullable=False,
+        ),
+        sa.Column("content_md", sa.Text(), nullable=True),
+        sa.Column("title", sa.String(length=500), nullable=True),
+        sa.Column(
+            "visibility",
+            sa.Enum(
+                "public",
+                "department",
+                "restricted",
+                name="documentvisibility",
+                native_enum=False,
+                length=32,
+            ),
+            nullable=True,
+        ),
+        sa.Column("meta", postgresql.JSONB(astext_type=sa.Text()), nullable=True),
+        sa.Column("id", sa.Uuid(), nullable=False),
+        sa.Column(
+            "created_at",
+            sa.DateTime(timezone=True),
+            server_default=sa.text("now()"),
+            nullable=False,
+        ),
+        sa.Column(
+            "updated_at",
+            sa.DateTime(timezone=True),
+            server_default=sa.text("now()"),
+            nullable=False,
+        ),
+        sa.ForeignKeyConstraint(["document_id"], ["documents.id"], ondelete="CASCADE"),
+        sa.ForeignKeyConstraint(["actor_id"], ["users.id"], ondelete="SET NULL"),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_index(
+        op.f("ix_document_events_document_id"),
+        "document_events",
+        ["document_id"],
+        unique=False,
+    )
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    op.drop_index(op.f("ix_document_events_document_id"), table_name="document_events")
+    op.drop_table("document_events")