fix(pi): close final ownership and native UX gaps

tests/lib/piPromptSlug.test.ts

@@ -0,0 +1,33 @@
+import { describe, expect, it } from "vitest";
+import { isValidPiPromptTemplateSlug } from "@/lib/piPromptSlug";
+
+describe("isValidPiPromptTemplateSlug", () => {
+  it("accepts callable Unicode and dotted slugs", () => {
+    expect(isValidPiPromptTemplateSlug("review-pr")).toBe(true);
+    expect(isValidPiPromptTemplateSlug("release.v2")).toBe(true);
+    expect(isValidPiPromptTemplateSlug("评审")).toBe(true);
+    expect(isValidPiPromptTemplateSlug("SYSTEM")).toBe(true);
+  });
+
+  it("rejects whitespace, portable filename hazards, and Windows device names", () => {
+    for (const slug of [
+      "release notes",
+      "tab\tname",
+      "bad:name",
+      "bad*name",
+      "CON",
+      "con.anything",
+      "LPT9",
+      "nul.json",
+    ]) {
+      expect(isValidPiPromptTemplateSlug(slug), slug).toBe(false);
+    }
+  });
+
+  it("measures the contract limit in UTF-8 bytes", () => {
+    expect(isValidPiPromptTemplateSlug("a".repeat(128))).toBe(true);
+    expect(isValidPiPromptTemplateSlug("a".repeat(129))).toBe(false);
+    expect(isValidPiPromptTemplateSlug("评".repeat(42))).toBe(true);
+    expect(isValidPiPromptTemplateSlug("评".repeat(43))).toBe(false);
+  });
+});