muse-chat-api: Use fuzzy matching for Main chat button\n\nExact match was too fragile - if the UI text differs slightly,\nit returns NOTFOUND and the browser stays on the side chat.\nNow uses substring + shortest-first like cmd_sidechat_use.

bin/muse-chat-api.py

@@ -210,6 +210,7 @@ def cmd_sidechat_main(ws):
     """Navigate back to main chat by clicking the Main chat button."""
     # Do NOT navigate to https://muse.ai/ (landing page) - it restores the
     # last-viewed chat which may be a side chat. Click Main chat instead.
+    # Uses fuzzy matching like cmd_sidechat_use (substring + shortest first).
     js = (
         "(async()=>{"
         "const ob=[...document.querySelectorAll('button')].find("
@@ -217,7 +218,8 @@ def cmd_sidechat_main(ws):
         "if(ob)ob.click();"
         "await new Promise(r=>setTimeout(r,2000));"
         "const els=[...document.querySelectorAll('*')];"
-        "const cands=els.filter(e=>e.textContent&&e.textContent.trim()==='Main chat');"
+        "const cands=els.filter(e=>e.textContent&&e.textContent.includes('Main chat'));"
+        "cands.sort((a,b)=>a.textContent.length-b.textContent.length);"
         "const el=cands[0];"
         "if(!el)return 'NOTFOUND';"
         "el.click();"