fix(desktop): forward mcpToolsets through Tauri bridge on agent create

createManagedAgent() built the input object explicitly but omitted
mcpToolsets, so the value collected in the dialog was silently dropped.
Per-agent toolset configuration did nothing at creation time.

Author: wpfleger96

desktop/scripts/check-file-sizes.mjs

@@ -49,7 +49,7 @@ const overrides = new Map([
   ["src/features/agents/ui/AgentsView.tsx", 850], // remote agent lifecycle controls + persona/team management + built-in catalog/library state orchestration
   ["src/features/agents/ui/CreateAgentDialog.tsx", 685], // provider selector + config form + schema-typed config coercion + required field validation + locked scopes
   ["src/features/channels/ui/AddChannelBotDialog.tsx", 640], // provider mode: Run on selector, trust warning, probe effect, single-agent enforcement, provider warnings display
-  ["src/shared/api/types.ts", 530], // persona provider/model fields + forum types + workflow type re-exports + ephemeral channel TTL fields
+  ["src/shared/api/types.ts", 535], // persona provider/model fields + forum types + workflow type re-exports + ephemeral channel TTL fields + mcpToolsets
 ]);
 
 async function walkFiles(directory) {

desktop/src/shared/api/tauri.ts

@@ -927,6 +927,7 @@ export async function createManagedAgent(input: CreateManagedAgentInput) {
         agentCommand: input.agentCommand,
         agentArgs: input.agentArgs,
         mcpCommand: input.mcpCommand,
+        mcpToolsets: input.mcpToolsets,
         turnTimeoutSeconds: input.turnTimeoutSeconds,
         idleTimeoutSeconds: input.idleTimeoutSeconds,
         maxTurnDurationSeconds: input.maxTurnDurationSeconds,