fix(agents): relax Momus input validation and tighten Prometheus Momus calls to avoid false rejections (#659)

src/agents/prometheus-prompt.test.ts

@@ -0,0 +1,22 @@
+import { describe, test, expect } from "bun:test"
+import { PROMETHEUS_SYSTEM_PROMPT } from "./prometheus-prompt"
+
+describe("PROMETHEUS_SYSTEM_PROMPT Momus invocation policy", () => {
+  test("should direct providing ONLY the file path string when invoking Momus", () => {
+    // #given
+    const prompt = PROMETHEUS_SYSTEM_PROMPT
+
+    // #when / #then
+    // Should mention Momus and providing only the path
+    expect(prompt.toLowerCase()).toMatch(/momus.*only.*path|path.*only.*momus/)
+  })
+
+  test("should forbid wrapping Momus invocation in explanations or markdown", () => {
+    // #given
+    const prompt = PROMETHEUS_SYSTEM_PROMPT
+
+    // #when / #then
+    // Should mention not wrapping or using markdown for the path
+    expect(prompt.toLowerCase()).toMatch(/not.*wrap|no.*explanation|no.*markdown/)
+  })
+})