fix(pi): clarify shared open PR errors

Author: Bill Leoutsakos

apps/sim/executor/handlers/pi/cloud-review-backend.test.ts

@@ -530,7 +530,7 @@ describe('runCloudReviewPi', () => {
     mockExecuteTool.mockResolvedValue({ success: true, output: snapshot({ state: 'closed' }) })
 
     await expect(runCloudReviewPi(baseParams(), { onEvent: vi.fn() })).rejects.toThrow(
-      /only open PRs can be reviewed/
+      /only open PRs are supported/
     )
     expect(mockRun).not.toHaveBeenCalled()
   })

apps/sim/executor/handlers/pi/github-pr.test.ts

@@ -99,7 +99,7 @@ describe('fetchOpenPrSnapshot', () => {
     mockExecuteTool.mockResolvedValue({ success: true, output: snapshot({ state: 'closed' }) })
 
     await expect(fetchOpenPrSnapshot(COORDINATES)).rejects.toThrow(
-      'PR #7 is closed; only open PRs can be reviewed'
+      'PR #7 is closed; only open PRs are supported'
     )
   })
 })

apps/sim/executor/handlers/pi/github-pr.ts

@@ -122,7 +122,7 @@ export async function fetchOpenPrSnapshot(
 ): Promise<PullRequestSnapshot> {
   const snapshot = await fetchPrSnapshot(params, signal)
   if (snapshot.state !== 'open') {
-    throw new Error(`PR #${params.pullNumber} is ${snapshot.state}; only open PRs can be reviewed`)
+    throw new Error(`PR #${params.pullNumber} is ${snapshot.state}; only open PRs are supported`)
   }
   return snapshot
 }