wip: logging improvements

internal/db/migrations/20250508122310_create_logs_table.sql

@@ -0,0 +1,16 @@
+-- +goose Up
+CREATE TABLE logs (
+    id TEXT PRIMARY KEY,
+    session_id TEXT REFERENCES sessions(id) ON DELETE CASCADE,
+    timestamp INTEGER NOT NULL,
+    level TEXT NOT NULL,
+    message TEXT NOT NULL,
+    attributes TEXT,
+    created_at INTEGER NOT NULL
+);
+
+CREATE INDEX logs_session_id_idx ON logs(session_id);
+CREATE INDEX logs_timestamp_idx ON logs(timestamp);
+
+-- +goose Down
+DROP TABLE logs;