test(orchestration): pin the run receipt internal-column strip

exposeRun had zero coverage: emptying INTERNAL_RUN_COLUMNS left every
suite green. Adds a unit pin on the column set plus an RPC-level pin
through orchestration.runCreate.

src/main/runtime/rpc/methods/orchestration/runs/run-receipt.test.ts

@@ -0,0 +1,61 @@
+import { describe, expect, it } from 'vitest'
+import { exposeRun } from './run-receipt'
+import type { RunRow } from '../../../../orchestration/types'
+
+// Why: typecheck cannot see the strip because the RPC return types are loose.
+const RUN_ROW: RunRow = {
+  id: 'run_1',
+  objective: 'Coordinate reviews',
+  home_database: '/tmp/orca/orchestration.db',
+  coordinator_handle: 'term_coord',
+  coordinator_pane_key: 'tab_coord:11111111-1111-4111-8111-111111111111',
+  consumer_generation: 3,
+  legacy: 0,
+  created_at: '2026-09-04T18:53:07Z',
+  updated_at: '2026-09-04T18:53:09Z'
+}
+
+describe('exposeRun', () => {
+  it('drops exactly the internal routing columns', () => {
+    const exposed = exposeRun(RUN_ROW)
+
+    expect(Object.keys(exposed).sort()).toEqual([
+      'consumer_generation',
+      'coordinator_handle',
+      'created_at',
+      'id',
+      'legacy',
+      'objective',
+      'updated_at'
+    ])
+    expect(exposed).not.toHaveProperty('home_database')
+    expect(exposed).not.toHaveProperty('coordinator_pane_key')
+  })
+
+  it('preserves every published column by value', () => {
+    const exposed = exposeRun(RUN_ROW)
+
+    expect(exposed).toEqual({
+      id: 'run_1',
+      objective: 'Coordinate reviews',
+      coordinator_handle: 'term_coord',
+      consumer_generation: 3,
+      legacy: 0,
+      created_at: '2026-09-04T18:53:07Z',
+      updated_at: '2026-09-04T18:53:09Z'
+    })
+  })
+
+  it('does not mutate the source row', () => {
+    const row = { ...RUN_ROW }
+    exposeRun(row)
+
+    expect(row).toEqual(RUN_ROW)
+  })
+
+  it('strips the columns even when they are null', () => {
+    const exposed = exposeRun({ ...RUN_ROW, coordinator_pane_key: null })
+
+    expect(exposed).not.toHaveProperty('coordinator_pane_key')
+  })
+})

src/main/runtime/rpc/methods/orchestration/runs/runs.test.ts

@@ -90,6 +90,22 @@ describe('orchestration RPC methods', () => {
       expect(current.run?.id).toBe(created.run.id)
     })
 
+    it('publishes a run receipt without internal routing columns', async () => {
+      setup(false)
+      vi.spyOn(runtime, 'getTerminalPaneKey').mockReturnValue(
+        'tab_coord:11111111-1111-4111-8111-111111111111'
+      )
+
+      const created = (await call('orchestration.runCreate', {
+        objective: 'Coordinate reviews',
+        from: 'term_coord'
+      })) as { run: Record<string, unknown> }
+
+      expect(created.run).not.toHaveProperty('coordinator_pane_key')
+      expect(created.run).not.toHaveProperty('home_database')
+      expect(created.run.consumer_generation).toBe(1)
+    })
+
     it('requires runtime-observed stable pane identity for binding', async () => {
       setup(false)
       vi.spyOn(runtime, 'getTerminalPaneKey').mockReturnValue(null)