docs(docs): remove image logos and show site name in navbar

Drop starter Mintlify SVG wordmarks; Mintlify uses docs.json name as text when logo is unset. Remove logo/ from turbo build inputs.

Made-with: Cursor

Author: kzndotsh

apps/docs/docs.json

@@ -179,10 +179,6 @@
       ]
     }
   },
-  "logo": {
-    "light": "/logo/light.svg",
-    "dark": "/logo/dark.svg"
-  },
   "navbar": {
     "links": [
       {

apps/docs/logo/dark.svg

@@ -10,7 +10,6 @@
         "docs.json",
         "snippets/**",
         "images/**",
-        "logo/**",
         "api-reference/**",
         "ai-tools/**",
         "essentials/**",