fix(docs): restore pinned deps and pnpm 10 lockfile format

Renovate rewrote docs/pnpm-lock.yaml with its bundled pnpm, downgrading
the patchedDependencies block to the pre-10.34 scalar format, which fails
the CI frozen install with ERR_PNPM_LOCKFILE_CONFIG_MISMATCH, and also
bumped fumadocs/lucide-react past the versions pinned after the
2026-10-14 regression. Restore both files to the last known good state
(verified: pnpm 10.34.7 frozen install + full docs build pass) and stop
renovate from managing docs npm deps until its pnpm writes the 10.x
lockfile format.

renovate.json

@@ -84,6 +84,16 @@
       ],
       "enabled": false,
       "description": "Tauri npm packages must stay in lockstep with Rust crates; bump them manually with Cargo in one batch"
+    },
+    {
+      "matchFileNames": [
+        "docs/**"
+      ],
+      "matchManagers": [
+        "npm"
+      ],
+      "enabled": false,
+      "description": "Docs deps are pinned deliberately (fumadocs/lucide 2026-10-14 regression) and renovate's pnpm rewrites docs/pnpm-lock.yaml in a pre-10.34 patchedDependencies format that fails the frozen CI install; bump docs deps manually with pnpm 10.34.7 and a verified local build"
     }
   ]
 }