Merge pull request #1873 from deepseek-harness/fix/code-mode-executor-collapse

fix(tools): collapse code-mode executor to run_code for model-direct calls

packages/subagent/subagent-inprocess/tests/subagent-inprocess.spec.ts

@@ -343,7 +343,7 @@ describe('startInProcessRun', () => {
     await expect(startInProcessRun({
       ...request(parent),
       toolFilter: { deny: ['unknown-tool'] },
-    }, {})).rejects.toThrow('unknown inherited tool')
+    }, {})).rejects.toThrow('unknown global tool')
     expect(ctx.agents.list()).toHaveLength(beforeAgents)
     expect(ctx.sessions.list()).toHaveLength(beforeSessions)
   })

packages/subagent/subagent-spawn/tests/subagent-spawn.spec.ts

@@ -436,7 +436,7 @@ describe('dsh-subagent-spawn', () => {
         prompt: [{ type: 'text', text: 'do X' }],
         parent,
         toolFilter: { deny: ['no_such_tool'] },
-      })).rejects.toThrow(/unknown inherited tool "no_such_tool"/)
+      })).rejects.toThrow(/unknown global tool "no_such_tool"/)
       expect(ctx.agents.list().length).toBe(before)
     })
   })