fix(postprocess): handle docs.internetcomputer.org/developer-tools/#mo-doc after upstream §10 lands

Author: marc0olo

.docs-plan/motoko-repo-sync-proposal.md

@@ -503,6 +503,18 @@ Notes on anchored entries:
   appeared in an earlier version of the source but are no longer present. No
   action needed for those two.
 
+**developer-docs side — postprocessor update when §5 lands:** the current
+`externalToInternal` map in `postprocess-motoko.mjs` handles the old
+`internetcomputer.org/docs/...` pattern. After §5 replaces those with
+`docs.internetcomputer.org/...` paths, add a general prefix rule to the map:
+```javascript
+['docs.internetcomputer.org/', '/']
+```
+This single entry rewrites all `docs.internetcomputer.org/<path>` links to
+root-relative `/<path>` internal paths, replacing the entire set of specific
+entries above. Remove the `internetcomputer.org/docs/...` entries at the same
+time — they will no longer appear in the upstream source.
+
 ### 6. Use Starlight-native aside types
 
 Replace Docusaurus-only aside types with their Starlight equivalents:

scripts/postprocess-motoko.mjs

@@ -134,8 +134,15 @@ const externalToInternal = new Map([
   ['internetcomputer.org/docs/current/developer-docs/getting-started/development-workflow','/getting-started/quickstart'],
 
   // docs.motoko.org (non-existent domain) → developer-tools page
-  // Upstream fix tracked as caffeinelabs/motoko#6131 §10.
+  // Upstream fix (caffeinelabs/motoko#6131 §10) replaces the broken link with
+  // https://docs.internetcomputer.org/developer-tools/#mo-doc — handle both so
+  // the rewrite works before and after the upstream change lands.
   ['docs.motoko.org', '/developer-tools/#mo-doc'],
+  ['docs.internetcomputer.org/developer-tools/#mo-doc', '/developer-tools/#mo-doc'],
+  // NOTE: when upstream §5 lands (all internetcomputer.org/docs/... links replaced
+  // with docs.internetcomputer.org/... paths), add a general prefix rule here:
+  //   ['docs.internetcomputer.org/', '/']
+  // and remove the now-redundant internetcomputer.org/docs/... entries above.
 
   // Motoko-internal links using old portal paths
   ['internetcomputer.org/docs/motoko/language-manual',                          '/languages/motoko/reference/language-manual'],