Show protocol enable state and which nodes have each protocol installed.

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/db/db.go

@@ -82,6 +82,18 @@ CREATE TABLE IF NOT EXISTS nodes (
 );
 
 CREATE INDEX IF NOT EXISTS idx_nodes_status ON nodes(status);
+
+CREATE TABLE IF NOT EXISTS node_protocols (
+    node_id UUID NOT NULL REFERENCES nodes(id) ON DELETE CASCADE,
+    protocol_id UUID NOT NULL REFERENCES protocols(id) ON DELETE CASCADE,
+    installed BOOLEAN NOT NULL DEFAULT FALSE,
+    enabled BOOLEAN NOT NULL DEFAULT FALSE,
+    port INT NOT NULL DEFAULT 0,
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    PRIMARY KEY (node_id, protocol_id)
+);
+
+CREATE INDEX IF NOT EXISTS idx_node_protocols_protocol ON node_protocols(protocol_id);
 `
 	_, err := db.Exec(schema)
 	return err
@@ -129,7 +141,7 @@ func SeedProtocols(db *sql.DB) error {
 	for _, p := range defaults {
 		_, err := db.Exec(`
 INSERT INTO protocols (code, name, description, port, enabled, sort_order)
-VALUES ($1, $2, $3, $4, TRUE, $5)
+VALUES ($1, $2, $3, $4, FALSE, $5)
 ON CONFLICT (code) DO NOTHING`,
 			p.Code, p.Name, p.Description, p.Port, p.Sort,
 		)
@@ -185,6 +197,12 @@ UPDATE protocols SET enabled = NOT enabled, updated_at = NOW() WHERE id = $1`, i
 	return err
 }
 
+func SetProtocolEnabled(db *sql.DB, id uuid.UUID, enabled bool) error {
+	_, err := db.Exec(`
+UPDATE protocols SET enabled = $2, updated_at = NOW() WHERE id = $1`, id, enabled)
+	return err
+}
+
 func GetStats(db *sql.DB) (models.DashboardStats, error) {
 	var s models.DashboardStats
 	err := db.QueryRow(`SELECT COUNT(*) FROM protocols`).Scan(&s.ProtocolsTotal)