Thorsten
419f5e3a89
RAG: switch Postgres to pgvector, chunk and embed the three D&D rulebooks locally via sentence-transformers, and retrieve relevant excerpts per DM turn (query = latest player message) to ground the system prompt. Retrieval runs off the event loop and is capped by a relevance threshold and a max character budget so it can't blow up context size or cost. Game setup wizard: creating a game now opens a short chat where the DM asks about genre, length, and the player's experience level, then proposes a name and description via a tool call. The player can edit both before creating the game. Stateless endpoint — the frontend carries the conversation, no DB needed since the game doesn't exist yet. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
44 lines
1.4 KiB
Python
44 lines
1.4 KiB
Python
"""add rulebook_chunks (pgvector RAG)
|
|
|
|
Revision ID: 7c3f9a2e1d44
|
|
Revises: 48846ed4fe0e
|
|
Create Date: 2026-08-31 19:00:00.000000
|
|
|
|
"""
|
|
from typing import Sequence, Union
|
|
|
|
from alembic import op
|
|
import sqlalchemy as sa
|
|
from sqlalchemy.dialects import postgresql
|
|
from pgvector.sqlalchemy import Vector
|
|
|
|
# revision identifiers, used by Alembic.
|
|
revision: str = '7c3f9a2e1d44'
|
|
down_revision: Union[str, None] = '48846ed4fe0e'
|
|
branch_labels: Union[str, Sequence[str], None] = None
|
|
depends_on: Union[str, Sequence[str], None] = None
|
|
|
|
|
|
def upgrade() -> None:
|
|
op.execute("CREATE EXTENSION IF NOT EXISTS vector")
|
|
|
|
op.create_table(
|
|
'rulebook_chunks',
|
|
sa.Column('id', sa.UUID(), nullable=False),
|
|
sa.Column('source_document', sa.String(length=200), nullable=False),
|
|
sa.Column('chunk_index', sa.Integer(), nullable=False),
|
|
sa.Column('content', sa.Text(), nullable=False),
|
|
sa.Column('embedding', Vector(384), nullable=False),
|
|
sa.Column('doc_metadata', postgresql.JSONB(astext_type=sa.Text()), nullable=False),
|
|
sa.PrimaryKeyConstraint('id'),
|
|
)
|
|
op.create_index(
|
|
op.f('ix_rulebook_chunks_source_document'), 'rulebook_chunks', ['source_document'], unique=False
|
|
)
|
|
|
|
|
|
def downgrade() -> None:
|
|
op.drop_index(op.f('ix_rulebook_chunks_source_document'), table_name='rulebook_chunks')
|
|
op.drop_table('rulebook_chunks')
|
|
op.execute("DROP EXTENSION IF EXISTS vector")
|