fix(tests): section-prefix tool API URLs across overhauled suite

#276's overhauled integration tests + QA sweep scripts hit the old
sectionless /api/v1/tools/<id> routes, which 404 after #280 made routes
section-prefixed. Ran scripts/rewrite-tool-paths.ts for literal URLs and
converted dynamic /api/v1/tools/${id} constructions to apiToolPath().
Negative-test paths (nonexistent/fake tools) intentionally left raw.

tests/integration/fixtures/audio-depth.test.ts

@@ -9,6 +9,7 @@ import { mkdtempSync, writeFileSync } from "node:fs";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { ffmpegAvailable, probeMedia } from "@snapotter/media-engine";
+import { apiToolPath } from "@snapotter/shared";
 import { afterAll, beforeAll, describe, expect, it } from "vitest";
 import { fixtures, readFixture } from "../../fixtures/index.js";
 import {
@@ -50,7 +51,7 @@ async function postTool(
   ]);
   return app.inject({
     method: "POST",
-    url: `/api/v1/tools/${toolId}`,
+    url: apiToolPath(toolId),
     headers: {
       authorization: `Bearer ${adminToken}`,
       "content-type": contentType,