test(lint): remove the import-cycle guard test

.gitignore

@@ -46,16 +46,3 @@ __pycache__/
 
 # Agent and manual git worktrees (full second checkouts; see worktrees-pnpm skill)
 worktrees/
-
-# Scratch fixture written by `packages/cli/test/import-cycle-lint.test.ts`. That
-# test writes a real a.ts <-> b.ts cycle INSIDE `packages/cli/src` and asserts
-# `import-x/no-cycle` reports it. The location is forced, not a convenience: the
-# rule only sees files the flat config matches, and the type-aware block needs
-# the file inside a tsconfig (`packages/cli/tsconfig.json` includes `src`) — a
-# fixture in the OS temp dir is refused as outside the config base path, and one
-# elsewhere in the repo fails to parse and reports zero cycles, which is the
-# vacuous green the test exists to rule out. Cleanup runs in `afterAll`, so a
-# killed run (Ctrl+C, OOM, CI cancellation) can strand a live cycle in the
-# source tree. This keeps that debris out of commits; delete the directory, not
-# this line.
-/packages/cli/src/__cycle-guard-*/

eslint.config.js

@@ -123,8 +123,8 @@ export default tseslint.config(
       // the rule resolves our files correctly, walks into them, finds nothing,
       // and reports no cycles — on a tree that provably contains one. A lint
       // run that is green because the rule is inert looks exactly like a lint
-      // run that is green because the code is clean, which is why the
-      // reintroduced-cycle check in this PR's description exists.
+      // run that is green because the code is clean, so treat a change to
+      // this list as a change to whether the rule runs at all.
       "import-x/extensions": [
         ".ts",
         ".tsx",