refactor(monkeyd): port the crawler in-tree and drop the submodule

The monkeyd-crawler repository moved into tiennm99/mttools, so recursive
clones of the old submodule URL fail and block every deploy. The crawler,
PDF renderer, and export flow now live under internal/modules/monkeyd,
trimmed to the bot's use: a fixed phone page, the bundled font only, and
the font size as the single export option.

.golangci.yml

@@ -50,6 +50,9 @@ linters:
         - name: unused-parameter
           disabled: true
   exclusions:
+    # renderer/ is the Node service; its node_modules can carry stray Go files.
+    paths:
+      - renderer
     rules:
       # Tests routinely pass dummy values, swallow errors from helpers, and
       # use higher cyclomatic complexity in table-driven cases. Suppress the