Post-merge cleanup of PR #1

- Remove .codex-gitconfig: Windows-specific Codex tooling artifact
  accidentally bundled with the contribution; not project state.
- Drop Loop space stanza from Riemannian.lean public API list. The
  file and import are retained; names (BasedLoop, FreeLoop,
  LoopInterval) are not yet committed as stable surface pending
  iteration over Mathlib.Topology.Path.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: Xinze-Li-Moqian

.codex-gitconfig

@@ -103,12 +103,6 @@ intermediate identities) are internal and may change without notice.
   * `Riemannian.manifoldGradientNormSq`
   * `Riemannian.manifoldGradient_riesz`
 
-**Loop space** (`LoopSpace.lean`):
-  * `Riemannian.LoopInterval`
-  * `Riemannian.BasedLoop`, `Riemannian.LoopSpace`
-  * `Riemannian.FreeLoop`, `Riemannian.FreeLoopSpace`
-  * `Riemannian.BasedLoop.const`, `Riemannian.FreeLoop.const`
-
 **Bump functions** (`BumpFunction.lean`):
   * `OpenGALib.BumpFunction.expDamping`
   * `OpenGALib.BumpFunction.smoothStep`