first commit

backend/alembic/README

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+Generic single-database configuration with an async dbapi.

backend/alembic/env.py

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+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config, pool
+
+from alembic import context
+
+import os
+import sys
+
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+from app.config import get_settings
+from app.db import Base
+from app.models import database  # noqa: F401
+
+settings = get_settings()
+config = context.config
+
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+target_metadata = Base.metadata
+
+
+def get_url():
+    return settings.database_url
+
+
+def run_migrations_offline() -> None:
+    url = get_url()
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    configuration = config.get_section(config.config_ini_section, {})
+    configuration["sqlalchemy.url"] = get_url()
+    connectable = engine_from_config(
+        configuration,
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        context.configure(connection=connection, target_metadata=target_metadata)
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

backend/alembic/script.py.mako

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+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision: str = ${repr(up_revision)}
+down_revision: Union[str, None] = ${repr(down_revision)}
+branch_labels: Union[str, Sequence[str], None] = ${repr(branch_labels)}
+depends_on: Union[str, Sequence[str], None] = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    ${downgrades if downgrades else "pass"}

backend/alembic/versions/0001_initial.py

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+"""initial
+
+Revision ID: 0001
+Revises:
+Create Date: 2026-08-02 00:00:00.000000
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision: str = "0001"
+down_revision: Union[str, None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "samples",
+        sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True),
+        sa.Column("repo", sa.String(255), nullable=False),
+        sa.Column("commit_sha", sa.String(40), nullable=False),
+        sa.Column("language", sa.String(50), nullable=False),
+        sa.Column("diff", sa.Text, nullable=False),
+        sa.Column("before_context", sa.Text, nullable=True),
+        sa.Column("after_context", sa.Text, nullable=True),
+        sa.Column("created_at", sa.DateTime, nullable=False),
+    )
+
+    op.create_table(
+        "defects",
+        sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True),
+        sa.Column("sample_id", postgresql.UUID(as_uuid=True), sa.ForeignKey("samples.id"), nullable=False),
+        sa.Column("defect_type", sa.String(100), nullable=False),
+        sa.Column("language", sa.String(50), nullable=False),
+        sa.Column("line_start", sa.Integer, nullable=True),
+        sa.Column("line_end", sa.Integer, nullable=True),
+        sa.Column("description", sa.Text, nullable=True),
+        sa.Column("reference_fix", sa.Text, nullable=True),
+        sa.Column("created_at", sa.DateTime, nullable=False),
+    )
+
+    op.create_table(
+        "prompt_templates",
+        sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True),
+        sa.Column("strategy_id", sa.String(100), nullable=False),
+        sa.Column("level", sa.String(20), nullable=False),
+        sa.Column("created_at", sa.DateTime, nullable=False),
+        sa.UniqueConstraint("strategy_id", "level", name="uix_strategy_level"),
+    )
+
+    op.create_table(
+        "prompt_template_versions",
+        sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True),
+        sa.Column("template_id", postgresql.UUID(as_uuid=True), sa.ForeignKey("prompt_templates.id"), nullable=False),
+        sa.Column("version_number", sa.Integer, nullable=False),
+        sa.Column("body", sa.Text, nullable=False),
+        sa.Column("variables_schema", sa.JSON, nullable=False),
+        sa.Column("created_at", sa.DateTime, nullable=False),
+    )
+
+    op.create_table(
+        "experiments",
+        sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True),
+        sa.Column("name", sa.String(255), nullable=False),
+        sa.Column("models", sa.JSON, nullable=False),
+        sa.Column("levels", sa.JSON, nullable=False),
+        sa.Column("sample_ids", sa.JSON, nullable=False),
+        sa.Column("repeats", sa.Integer, nullable=False),
+        sa.Column("sampling_params", sa.JSON, nullable=False),
+        sa.Column("status", sa.String(20), nullable=False),
+        sa.Column("created_at", sa.DateTime, nullable=False),
+    )
+
+    op.create_table(
+        "experiment_runs",
+        sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True),
+        sa.Column("run_id", sa.String(64), unique=True, nullable=False),
+        sa.Column("experiment_id", postgresql.UUID(as_uuid=True), sa.ForeignKey("experiments.id"), nullable=False),
+        sa.Column("sample_id", postgresql.UUID(as_uuid=True), sa.ForeignKey("samples.id"), nullable=False),
+        sa.Column("model_id", sa.String(100), nullable=False),
+        sa.Column("template_version_id", postgresql.UUID(as_uuid=True), sa.ForeignKey("prompt_template_versions.id"), nullable=False),
+        sa.Column("repeat_index", sa.Integer, nullable=False),
+        sa.Column("status", sa.String(20), nullable=False),
+        sa.Column("retry_count", sa.Integer, nullable=False),
+        sa.Column("sampling_params", sa.JSON, nullable=False),
+        sa.Column("started_at", sa.DateTime, nullable=True),
+        sa.Column("completed_at", sa.DateTime, nullable=True),
+        sa.Column("created_at", sa.DateTime, nullable=False),
+    )
+
+    op.create_table(
+        "results",
+        sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True),
+        sa.Column("run_id", postgresql.UUID(as_uuid=True), sa.ForeignKey("experiment_runs.id"), nullable=False, unique=True),
+        sa.Column("raw_output", sa.Text, nullable=True),
+        sa.Column("token_usage", sa.JSON, nullable=True),
+        sa.Column("latency_ms", sa.Float, nullable=True),
+        sa.Column("parsed_findings", sa.JSON, nullable=True),
+        sa.Column("detection_rate", sa.Float, nullable=True),
+        sa.Column("false_positive_rate", sa.Float, nullable=True),
+        sa.Column("coverage_rate", sa.Float, nullable=True),
+        sa.Column("stability_score", sa.Float, nullable=True),
+        sa.Column("likert_score", sa.Integer, nullable=True),
+        sa.Column("created_at", sa.DateTime, nullable=False),
+        sa.Column("updated_at", sa.DateTime, nullable=False),
+    )
+
+
+def downgrade() -> None:
+    op.drop_table("results")
+    op.drop_table("experiment_runs")
+    op.drop_table("experiments")
+    op.drop_table("prompt_template_versions")
+    op.drop_table("prompt_templates")
+    op.drop_table("defects")
+    op.drop_table("samples")