Fix Command Code smart-sort bump on new prompt while working (STA-350) (#5286)

Co-authored-by: Orca <help@stably.ai>

src/shared/command-code-turn-boundary.test.ts

@@ -0,0 +1,71 @@
+import { describe, expect, it } from 'vitest'
+import { isCommandCodeNewTurnWhileWorking } from './command-code-turn-boundary'
+
+describe('isCommandCodeNewTurnWhileWorking', () => {
+  it('returns true when Command Code gets a new transcript prompt while still working', () => {
+    expect(
+      isCommandCodeNewTurnWhileWorking({
+        agentType: 'command-code',
+        previousState: 'working',
+        incomingState: 'working',
+        previousPrompt: 'first task',
+        incomingPrompt: 'second task',
+        hasExplicitPrompt: true
+      })
+    ).toBe(true)
+  })
+
+  it('returns true when the prompt interaction key changes', () => {
+    expect(
+      isCommandCodeNewTurnWhileWorking({
+        agentType: 'command-code',
+        previousState: 'working',
+        incomingState: 'working',
+        previousPrompt: 'same text',
+        incomingPrompt: 'same text',
+        hasExplicitPrompt: true,
+        previousPromptInteractionKey: 'command-code-transcript-a',
+        incomingPromptInteractionKey: 'command-code-transcript-b'
+      })
+    ).toBe(true)
+  })
+
+  it('returns false for same-turn tool pings that keep the same prompt', () => {
+    expect(
+      isCommandCodeNewTurnWhileWorking({
+        agentType: 'command-code',
+        previousState: 'working',
+        incomingState: 'working',
+        previousPrompt: 'run pwd',
+        incomingPrompt: 'run pwd',
+        hasExplicitPrompt: true
+      })
+    ).toBe(false)
+  })
+
+  it('returns false when main-process hooks explicitly deny prompt evidence', () => {
+    expect(
+      isCommandCodeNewTurnWhileWorking({
+        agentType: 'command-code',
+        previousState: 'working',
+        incomingState: 'working',
+        previousPrompt: 'first',
+        incomingPrompt: 'second',
+        hasExplicitPrompt: false
+      })
+    ).toBe(false)
+  })
+
+  it('returns false for non-Command Code agents', () => {
+    expect(
+      isCommandCodeNewTurnWhileWorking({
+        agentType: 'codex',
+        previousState: 'working',
+        incomingState: 'working',
+        previousPrompt: 'first',
+        incomingPrompt: 'second',
+        hasExplicitPrompt: true
+      })
+    ).toBe(false)
+  })
+})