API

alembic/README

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+Generic single-database configuration.

alembic/env.py

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+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+
+from alembic import context
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+target_metadata = None
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def run_migrations_offline() -> None:
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.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:
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        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()

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, Sequence[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:
+    """Upgrade schema."""
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    ${downgrades if downgrades else "pass"}

alembic/versions/001_initial_schema.py

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+"""Initial schema
+
+Revision ID: 001
+Revises:
+Create Date: 2026-03-28
+"""
+
+from alembic import op
+
+revision = "001"
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.execute("""
+    CREATE TABLE IF NOT EXISTS public.users (
+        id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+        email           TEXT UNIQUE,
+        password_hash   TEXT,
+        apple_user_id   TEXT UNIQUE,
+        display_name    TEXT,
+        timezone        TEXT DEFAULT 'America/Chicago',
+        distraction_apps TEXT[] DEFAULT '{}',
+        preferences     JSONB DEFAULT '{}',
+        created_at      TIMESTAMPTZ DEFAULT now(),
+        updated_at      TIMESTAMPTZ DEFAULT now(),
+        CONSTRAINT auth_method CHECK (email IS NOT NULL OR apple_user_id IS NOT NULL)
+    );
+
+    CREATE TABLE IF NOT EXISTS public.tasks (
+        id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+        user_id         UUID NOT NULL REFERENCES public.users(id) ON DELETE CASCADE,
+        title           TEXT NOT NULL,
+        description     TEXT,
+        priority        INT DEFAULT 0,
+        status          TEXT DEFAULT 'pending',
+        deadline        TIMESTAMPTZ,
+        estimated_minutes INT,
+        source          TEXT DEFAULT 'manual',
+        tags            TEXT[] DEFAULT '{}',
+        plan_type       TEXT,
+        brain_dump_raw  TEXT,
+        created_at      TIMESTAMPTZ DEFAULT now(),
+        updated_at      TIMESTAMPTZ DEFAULT now()
+    );
+
+    CREATE TABLE IF NOT EXISTS public.steps (
+        id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+        task_id         UUID NOT NULL REFERENCES public.tasks(id) ON DELETE CASCADE,
+        sort_order      INT NOT NULL,
+        title           TEXT NOT NULL,
+        description     TEXT,
+        estimated_minutes INT,
+        status          TEXT DEFAULT 'pending',
+        checkpoint_note TEXT,
+        last_checked_at TIMESTAMPTZ,
+        completed_at    TIMESTAMPTZ,
+        created_at      TIMESTAMPTZ DEFAULT now()
+    );
+
+    CREATE TABLE IF NOT EXISTS public.sessions (
+        id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+        user_id         UUID NOT NULL REFERENCES public.users(id) ON DELETE CASCADE,
+        task_id         UUID REFERENCES public.tasks(id) ON DELETE SET NULL,
+        started_at      TIMESTAMPTZ DEFAULT now(),
+        ended_at        TIMESTAMPTZ,
+        status          TEXT DEFAULT 'active',
+        checkpoint      JSONB DEFAULT '{}',
+        created_at      TIMESTAMPTZ DEFAULT now()
+    );
+
+    CREATE TABLE IF NOT EXISTS public.distractions (
+        id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+        user_id         UUID NOT NULL REFERENCES public.users(id) ON DELETE CASCADE,
+        session_id      UUID REFERENCES public.sessions(id) ON DELETE SET NULL,
+        detected_at     TIMESTAMPTZ DEFAULT now(),
+        distraction_type TEXT,
+        app_name        TEXT,
+        duration_seconds INT,
+        confidence      FLOAT,
+        vlm_summary     TEXT,
+        nudge_shown     BOOLEAN DEFAULT false
+    );
+
+    CREATE TABLE IF NOT EXISTS public.distraction_patterns (
+        id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+        user_id         UUID NOT NULL REFERENCES public.users(id) ON DELETE CASCADE,
+        pattern_type    TEXT,
+        description     TEXT,
+        frequency       INT DEFAULT 1,
+        last_seen       TIMESTAMPTZ DEFAULT now(),
+        metadata        JSONB DEFAULT '{}'
+    );
+
+    CREATE INDEX IF NOT EXISTS idx_tasks_user ON tasks(user_id, status);
+    CREATE INDEX IF NOT EXISTS idx_steps_task ON steps(task_id, sort_order);
+    CREATE INDEX IF NOT EXISTS idx_steps_status ON steps(task_id, status);
+    CREATE INDEX IF NOT EXISTS idx_sessions_user ON sessions(user_id, started_at DESC);
+    CREATE INDEX IF NOT EXISTS idx_sessions_active ON sessions(user_id, status) WHERE status = 'active';
+    CREATE INDEX IF NOT EXISTS idx_distractions_user ON distractions(user_id, detected_at DESC);
+    CREATE INDEX IF NOT EXISTS idx_distractions_app ON distractions(user_id, app_name, detected_at DESC);
+    CREATE INDEX IF NOT EXISTS idx_distractions_hourly ON distractions(user_id, EXTRACT(HOUR FROM detected_at AT TIME ZONE 'UTC'));
+    """)
+
+
+def downgrade():
+    op.execute("""
+    DROP TABLE IF EXISTS public.distraction_patterns CASCADE;
+    DROP TABLE IF EXISTS public.distractions CASCADE;
+    DROP TABLE IF EXISTS public.sessions CASCADE;
+    DROP TABLE IF EXISTS public.steps CASCADE;
+    DROP TABLE IF EXISTS public.tasks CASCADE;
+    DROP TABLE IF EXISTS public.users CASCADE;
+    """)

alembic/versions/002_cross_device_handoff.py

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+"""Cross-device handoff: device_tokens + session platform
+
+Revision ID: 002
+Revises: 001
+Create Date: 2026-03-28
+"""
+
+from alembic import op
+
+revision = "002"
+down_revision = "001"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.execute("""
+    ALTER TABLE users ADD COLUMN IF NOT EXISTS device_tokens JSONB DEFAULT '[]';
+
+    ALTER TABLE sessions ADD COLUMN IF NOT EXISTS platform TEXT DEFAULT 'mac';
+    ALTER TABLE sessions ALTER COLUMN platform SET NOT NULL;
+    """)
+
+
+def downgrade():
+    op.execute("""
+    ALTER TABLE sessions DROP COLUMN IF EXISTS platform;
+    ALTER TABLE users DROP COLUMN IF EXISTS device_tokens;
+    """)

alembic/versions/003_proactive_actions.py

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+"""Proactive actions table for Argus layer
+
+Revision ID: 003
+Revises: 002
+Create Date: 2026-03-28
+"""
+
+from alembic import op
+
+revision = "003"
+down_revision = "002"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.execute("""
+    CREATE TABLE IF NOT EXISTS public.proactive_actions (
+        id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+        user_id         UUID NOT NULL REFERENCES public.users(id) ON DELETE CASCADE,
+        session_id      UUID REFERENCES public.sessions(id) ON DELETE SET NULL,
+        friction_type   TEXT NOT NULL,
+        proposed_action TEXT NOT NULL,
+        user_choice     TEXT,
+        chosen_action   TEXT,
+        executed        BOOLEAN DEFAULT false,
+        detected_at     TIMESTAMPTZ DEFAULT now(),
+        responded_at    TIMESTAMPTZ
+    );
+
+    CREATE INDEX IF NOT EXISTS idx_proactive_user ON proactive_actions(user_id, friction_type);
+    """)
+
+
+def downgrade():
+    op.execute("DROP TABLE IF EXISTS public.proactive_actions CASCADE;")