fix: preserve tool action enums

src/agents/pi-tools.test.ts

@@ -18,4 +18,51 @@ describe("createClawdisCodingTools", () => {
     expect(parameters.properties?.request).toBeDefined();
     expect(parameters.required ?? []).toContain("action");
   });
+
+  it("preserves union action values in merged schema", () => {
+    const tools = createClawdisCodingTools();
+    const toolNames = tools
+      .filter((tool) => tool.name.startsWith("clawdis_"))
+      .map((tool) => tool.name);
+
+    for (const name of toolNames) {
+      const tool = tools.find((candidate) => candidate.name === name);
+      expect(tool).toBeDefined();
+      const parameters = tool?.parameters as {
+        anyOf?: Array<{ properties?: Record<string, unknown> }>;
+        properties?: Record<string, unknown>;
+      };
+      const actionValues = new Set<string>();
+      for (const variant of parameters.anyOf ?? []) {
+        const action = variant?.properties?.action as
+          | { const?: unknown; enum?: unknown[] }
+          | undefined;
+        if (typeof action?.const === "string") actionValues.add(action.const);
+        if (Array.isArray(action?.enum)) {
+          for (const value of action.enum) {
+            if (typeof value === "string") actionValues.add(value);
+          }
+        }
+      }
+
+      const mergedAction = parameters.properties?.action as
+        | { const?: unknown; enum?: unknown[] }
+        | undefined;
+      const mergedValues = new Set<string>();
+      if (typeof mergedAction?.const === "string") {
+        mergedValues.add(mergedAction.const);
+      }
+      if (Array.isArray(mergedAction?.enum)) {
+        for (const value of mergedAction.enum) {
+          if (typeof value === "string") mergedValues.add(value);
+        }
+      }
+
+      expect(actionValues.size).toBeGreaterThan(1);
+      expect(mergedValues.size).toBe(actionValues.size);
+      for (const value of actionValues) {
+        expect(mergedValues.has(value)).toBe(true);
+      }
+    }
+  });
 });