docs: canonicalize docs paths and align zh navigation (#11428)

* docs(navigation): canonicalize paths and align zh nav

* chore(docs): remove stray .DS_Store

* docs(scripts): add non-mint docs link audit

* docs(nav): fix zh source paths and preserve legacy redirects (#11428) (thanks @sebslight)

* chore(docs): satisfy lint for docs link audit script (#11428) (thanks @sebslight)

docs/reference/api-usage-costs.md

@@ -29,7 +29,7 @@ OpenClaw features that can generate provider usage or paid API calls.
 - `openclaw status --usage` and `openclaw channels list` show provider **usage windows**
   (quota snapshots, not per-message costs).
 
-See [Token use & costs](/token-use) for details and examples.
+See [Token use & costs](/reference/token-use) for details and examples.
 
 ## How keys are discovered
 
@@ -48,7 +48,7 @@ OpenClaw can pick up credentials from:
 Every reply or tool call uses the **current model provider** (OpenAI, Anthropic, etc). This is the
 primary source of usage and cost.
 
-See [Models](/providers/models) for pricing config and [Token use & costs](/token-use) for display.
+See [Models](/providers/models) for pricing config and [Token use & costs](/reference/token-use) for display.
 
 ### 2) Media understanding (audio/image/video)