docs: finalize tree-shaking source maps plan

Author: radist2s

docs/superpowers/plans/2026-05-08-qraft-tree-shaking-source-maps.md

@@ -63,7 +63,7 @@ async function transformQraftTreeShaking(
 ```ts
 import { originalPositionFor, TraceMap } from '@jridgewell/trace-mapping';
 
-it('keeps the rewritten call site traceable through the composed source map', async () => {
+it('keeps a rewritten user call site traceable through an incoming source map', async () => {
   const fixture = await createFixture();
   const sourceFile = path.join(fixture, 'src/App.tsx');
   const originalCode = `
@@ -121,7 +121,7 @@ Expected: `packages/tree-shaking-plugin/package.json` and `yarn.lock` now list `
 Run:
 
 ```bash
-yarn workspace @openapi-qraft/tree-shaking-plugin test -- src/core.test.ts -t "keeps the rewritten call site traceable through the composed source map"
+yarn workspace @openapi-qraft/tree-shaking-plugin test -- src/core.test.ts -t "keeps a rewritten user call site traceable through an incoming source map"
 ```
 
 Expected: FAIL because the incoming bundler map is not threaded into the transform yet, so the composed-map assertion still points at generated-only positions.
@@ -173,7 +173,7 @@ Keep the rest of the transform unchanged. This spec is only about source-map com
 Run:
 
 ```bash
-yarn workspace @openapi-qraft/tree-shaking-plugin test -- src/core.test.ts -t "keeps the rewritten call site traceable through the composed source map"
+yarn workspace @openapi-qraft/tree-shaking-plugin test -- src/core.test.ts -t "keeps a rewritten user call site traceable through an incoming source map"
 ```
 
 Expected: PASS, with `originalPositionFor(...)` resolving to the original `api.pets.getPets.useQuery()` call.