New blog posts (monopam-madness, open-source-and-ai, weeknotes-2026-10),
notebook showcase with card layout and screenshots, Atom feed generator,
foundations notebook fixes, ONNX test improvements, widget interaction
tests, deploy script updates for oxcaml switch, and .gitignore for
build artifacts.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Support files can now either embed inline string content (Inline) or
reference a file path on disk to copy (Copy_from). This enables large
binary-like files such as x-ocaml.js (~16MB) to be managed via
`odoc support-files` without embedding them as OCaml string literals.

The scrollycode extension's x-ocaml script URLs are now configurable
via ODOC_X_OCAML_JS and ODOC_X_OCAML_WORKER environment variables,
and ODOC_X_OCAML_JS_PATH registers the file as a Copy_from support file.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>