fix: address Copilot review round 22 — merge deep-link args with defaults per level

The App deep link seeded defaults and spread its `appArgs` over them, which
replaces a nested object wholesale: `{ config: { kind: "sms" } }` discarded
the nested SMS branch's own defaults, which the form then displayed while the
submitted arguments omitted them. New seedSchemaValues merges the two per
level, picking each nested branch from the nested values, and the supplied
value still wins wherever the two meet.

Signed-off-by: cliffhall <cliff@futurescale.com>

clients/web/src/components/views/InspectorView/InspectorView.tsx

@@ -105,7 +105,7 @@ import {
 } from "../../../utils/correlateTransportErrors";
 import {
   applySchemaConstants,
-  collectSchemaDefaults,
+  seedSchemaValues,
   toFormSchema,
 } from "../../../utils/jsonUtils";
 import { MONITOR_COLUMN_ANIM_MS } from "./monitorColumnAnimation";
@@ -1049,10 +1049,13 @@ export function InspectorView({
     // link disagreeing with one would otherwise auto-open with a hidden value
     // contradicting the shape on screen.
     const appFormSchema = toFormSchema(target.inputSchema) ?? {};
-    const formValues = applySchemaConstants(appFormSchema, {
-      ...collectSchemaDefaults(appFormSchema, deepLink.appArgs ?? {}),
-      ...deepLink.appArgs,
-    });
+    const formValues = applySchemaConstants(
+      appFormSchema,
+      // Merged per level, not with one shallow spread: a nested object in the
+      // args would otherwise replace the whole seeded object, discarding the
+      // nested defaults the form goes on displaying.
+      seedSchemaValues(appFormSchema, deepLink.appArgs ?? {}),
+    );
     // Seed the selection directly rather than routing through
     // AppsScreen.handleSelect. This deliberately bypasses handleSelect's
     // no-input-app auto-launch: a deep link must never invoke a tool against