feat: two maintenance actions in the setup screen

src/__tests__/snip.test.ts

@@ -107,44 +107,43 @@ describe("removeSnipFiles", () => {
     await rm(OUTSIDE, { force: true });
   });
 
-  it("deletes a capture inside the snip directory", async () => {
+  it("deletes a capture inside the snip directory and counts it", async () => {
     const path = `${DIRECTORY}/one.png`;
     await writeFile(path, "png");
 
-    await removeSnipFiles([path]);
-
+    await expect(removeSnipFiles([path])).resolves.toBe(1);
     await expect(access(path)).rejects.toThrow();
   });
 
-  it("shrugs at a file that is already gone", async () => {
-    await expect(removeSnipFiles([`${DIRECTORY}/never-existed.png`])).resolves.toBeUndefined();
+  it("counts a file that was already gone, because the question is whether it is still there", async () => {
+    await expect(removeSnipFiles([`${DIRECTORY}/never-existed.png`])).resolves.toBe(1);
   });
 
-  it("refuses a path outside the snip directory", async () => {
+  it("refuses a path outside the snip directory and does not count it", async () => {
     // These paths come out of stored JSON, which is data rather than code, so
     // this must not be a general-purpose delete-any-file helper.
-    await removeSnipFiles([OUTSIDE]);
+    await expect(removeSnipFiles([OUTSIDE])).resolves.toBe(0);
 
     await expect(access(OUTSIDE)).resolves.toBeUndefined();
   });
 
   it("refuses a path that climbs out of the directory", async () => {
-    await removeSnipFiles([`${DIRECTORY}/../../lam-agent-not-a-snip.png`]);
+    await expect(removeSnipFiles([`${DIRECTORY}/../../lam-agent-not-a-snip.png`])).resolves.toBe(0);
 
     await expect(access(OUTSIDE)).resolves.toBeUndefined();
   });
 
   it("refuses the directory itself", async () => {
-    await removeSnipFiles([DIRECTORY]);
+    await expect(removeSnipFiles([DIRECTORY])).resolves.toBe(0);
 
     await expect(access(DIRECTORY)).resolves.toBeUndefined();
   });
 
-  it("keeps going when one path in the batch is refused", async () => {
+  it("keeps going when one path in the batch is refused, and counts only the one it acted on", async () => {
     const inside = `${DIRECTORY}/one.png`;
     await writeFile(inside, "png");
 
-    await removeSnipFiles([OUTSIDE, inside]);
+    await expect(removeSnipFiles([OUTSIDE, inside])).resolves.toBe(1);
 
     await expect(access(inside)).rejects.toThrow();
     await expect(access(OUTSIDE)).resolves.toBeUndefined();