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/concepts/multi-agent.md

@@ -112,7 +112,7 @@ Example:
 Notes:
 
 - DM access control is **global per WhatsApp account** (pairing/allowlist), not per agent.
-- For shared groups, bind the group to one agent or use [Broadcast groups](/broadcast-groups).
+- For shared groups, bind the group to one agent or use [Broadcast groups](/channels/broadcast-groups).
 
 ## Routing rules (how messages pick an agent)
 
@@ -373,4 +373,4 @@ Note: `tools.elevated` is **global** and sender-based; it is not configurable pe
 If you need per-agent boundaries, use `agents.list[].tools` to deny `exec`.
 For group targeting, use `agents.list[].groupChat.mentionPatterns` so @mentions map cleanly to the intended agent.
 
-See [Multi-Agent Sandbox & Tools](/multi-agent-sandbox-tools) for detailed examples.
+See [Multi-Agent Sandbox & Tools](/tools/multi-agent-sandbox-tools) for detailed examples.