fix: add missing async/await to graph children/parents commands (qa-autopilot)

Both children() and parents() in graph.ts call async adapter methods
(getChildrenModels, getParentModels) without await, returning unresolved
Promises. The callers in index.ts also miss the outer await, unlike all
other switch cases.

Effects:
- JSON.stringify(Promise) produces {} — empty output
- adapter.dispose() fires before the Promise settles, crashing the bridge

Author: QA Autopilot

packages/dbt-tools/src/commands/graph.ts

@@ -1,15 +1,15 @@
 import type { DBTProjectIntegrationAdapter } from "@altimateai/dbt-integration"
 
-export function children(adapter: DBTProjectIntegrationAdapter, args: string[]) {
+export async function children(adapter: DBTProjectIntegrationAdapter, args: string[]) {
   const model = flag(args, "model")
   if (!model) return { error: "Missing --model" }
-  return adapter.getChildrenModels({ table: model })
+  return await adapter.getChildrenModels({ table: model })
 }
 
-export function parents(adapter: DBTProjectIntegrationAdapter, args: string[]) {
+export async function parents(adapter: DBTProjectIntegrationAdapter, args: string[]) {
   const model = flag(args, "model")
   if (!model) return { error: "Missing --model" }
-  return adapter.getParentModels({ table: model })
+  return await adapter.getParentModels({ table: model })
 }
 
 function flag(args: string[], name: string): string | undefined {

packages/dbt-tools/src/index.ts

@@ -172,10 +172,10 @@ async function main() {
         result = await (await import("./commands/columns")).values(adapter, rest)
         break
       case "children":
-        result = (await import("./commands/graph")).children(adapter, rest)
+        result = await (await import("./commands/graph")).children(adapter, rest)
         break
       case "parents":
-        result = (await import("./commands/graph")).parents(adapter, rest)
+        result = await (await import("./commands/graph")).parents(adapter, rest)
         break
       case "deps":
         result = await (await import("./commands/deps")).deps(adapter)