fix: remove paperclip property from OpenClaw Gateway agent params

The OpenClaw Gateway's agent method has strict parameter validation
that rejects unknown properties. The paperclip property was being
sent at the root level of agentParams, causing validation failures
with error: "invalid agent params: at root: unexpected property 'paperclip'"

The paperclip metadata is already included in the message field
via wakeText, so removing the separate paperclip property resolves
the validation error while preserving the necessary information.

Fixes #606

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/adapters/openclaw-gateway/src/server/execute.ts

@@ -1069,7 +1069,6 @@ export async function execute(ctx: AdapterExecutionContext): Promise<AdapterExec
 
   const agentParams: Record<string, unknown> = {
     ...payloadTemplate,
-    paperclip: paperclipPayload,
     message,
     sessionKey,
     idempotencyKey: ctx.runId,

server/src/__tests__/openclaw-gateway-adapter.test.ts

@@ -456,33 +456,6 @@ describe("openclaw gateway adapter execute", () => {
       expect(String(payload?.message ?? "")).toContain("wake now");
       expect(String(payload?.message ?? "")).toContain("PAPERCLIP_RUN_ID=run-123");
       expect(String(payload?.message ?? "")).toContain("PAPERCLIP_TASK_ID=task-123");
-      expect(payload?.paperclip).toEqual(
-        expect.objectContaining({
-          runId: "run-123",
-          companyId: "company-123",
-          agentId: "agent-123",
-          taskId: "task-123",
-          issueId: "issue-123",
-          workspace: expect.objectContaining({
-            cwd: "/tmp/worktrees/pap-123",
-            strategy: "git_worktree",
-          }),
-          workspaces: [
-            expect.objectContaining({
-              id: "workspace-1",
-              cwd: "/tmp/project",
-            }),
-          ],
-          workspaceRuntime: expect.objectContaining({
-            services: [
-              expect.objectContaining({
-                name: "preview",
-                lifecycle: "ephemeral",
-              }),
-            ],
-          }),
-        }),
-      );
 
       expect(logs.some((entry) => entry.includes("[openclaw-gateway:event] run=run-123 stream=assistant"))).toBe(true);
     } finally {