Query
CREATE TABLE memories (
id INTEGER PRIMARY KEY AUTOINCREMENT,
content TEXT NOT NULL,
source TEXT NOT NULL DEFAULT 'user',
source_context TEXT,
tags TEXT DEFAULT '[]',
importance REAL DEFAULT 0.5,
created_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ', 'now')),
updated_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ', 'now')),
frame_id INTEGER REFERENCES frames(id) ON DELETE SET NULL
)