CREATE TABLE IF NOT EXISTS nodes (
    id TEXT PRIMARY KEY,
    parent_id TEXT NULL REFERENCES nodes(id),
    type TEXT NOT NULL,
    title TEXT NOT NULL,
    slug TEXT NOT NULL,
    path TEXT NULL,
    sort_order INTEGER NOT NULL DEFAULT 0,
    created_at TEXT NOT NULL,
    updated_at TEXT NOT NULL,
    deleted_at TEXT NULL,
    revision INTEGER NOT NULL DEFAULT 1,
    device_id TEXT NULL
);

CREATE TABLE IF NOT EXISTS node_meta (
    node_id TEXT NOT NULL REFERENCES nodes(id),
    key TEXT NOT NULL,
    value TEXT NOT NULL,
    PRIMARY KEY (node_id, key)
);

CREATE INDEX IF NOT EXISTS idx_nodes_parent ON nodes(parent_id);
CREATE INDEX IF NOT EXISTS idx_nodes_deleted ON nodes(deleted_at);