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>

Both interactive and scrollycode extensions now check
_build/install/default/share/x-ocaml/x-ocaml.js (walking up from CWD)
before falling back to opam share. This avoids requiring 'dune install
x-ocaml' as a separate step.

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

Instead of requiring every .mld file to specify @x-ocaml.universe and
@x-ocaml.worker tags individually, configure the default universe path
once in dune-workspace (--config x-ocaml.universe=/_opam). The shell
emits <meta> tags from config values, and per-page @x-ocaml tags can
still override them.

Changes:
- dune-workspace: add --config x-ocaml.universe=/_opam to html_flags
- gen_rules.ml: pass --config to odoc html-generate for @site build
- odoc_jon_shell.ml: emit <meta> tags from x-ocaml.* config values
- odoc generator.ml: pass config to shell page_creator
- interactive_extension.ml: upsert meta tags (update existing or create)
- x_ocaml.ml: infer jtw backend from x-ocaml-universe meta tag
- Remove @x-ocaml.universe/@x-ocaml.worker from 14 .mld files using
the default /_opam universe
- deploy-site.sh: add dune install x-ocaml, chmod fix, widget-leaflet
- findlibish.ml: module detection fallback via jsoo runtime

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

- Add sidebar pipeline: compile-index → sidebar-generate → html-generate --sidebar
- jon-shell: render sidebar nav with sticky CSS layout
- Convert all {@ocamltop blocks to {@ocaml for interactive extension
- odoc-interactive-extension: handle autorun (→ run-on=load) and skip tags
- Remove package prefix from URLs (parent-id uses "." for root pages)
- Add projects/index.mld placeholder, @children_order for notebooks
- Add (prefix reference) to dune-workspace for @doc output
- Update deploy-site.sh for two-pass build (site + reference docs)

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

The map demo requires this widget package at runtime.

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

Add index.mld files for all packages that were missing them, which
caused odoc to generate default pages titled "<package> index". Also
fix leaf item indentation by always adding a spacer span regardless
of the node kind.

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

- Add cppo preprocessing for merlin-js and x-ocaml workers to support
conditional compilation with OXCAML flag
- Guard day10 packages with enabled_if >= 5.3.0 since they need recent OCaml
- Remove fatal odoc warnings from dune-workspace (handled per-package now)
- Bump merlin-js dune lang to 3.17
- Add warning suppression flags where needed (-w -58, -w -67)
- Add interactive extension exercise pages (FOCS 2020/2024/2025, OxCaml
stack allocation)

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

- Add managed widget protocol (display_managed, command, register_adapter)
for external widget adapters like Leaflet maps
- Extract Leaflet map adapter into separate js_top_worker-widget-leaflet
library, loadable via #require
- Add widget rendering to x-ocaml web component (widget_render.ml) so
widgets work in .mld documentation pages
- Wire widget callbacks through OCaml client (js_top_worker_client_msg.ml)
- Complete the preloaded list in findlibish.ml to match all transitive
worker dependencies, preventing "file already exists" errors when
#require loads packages already compiled into the worker
- Add demo_widgets.mld and demo_map.mld documentation pages

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

- Fix sidebar kindBadge: map leaf-page→pg, module-type→MT, etc. (was
showing "L" for leaf-page entries)
- Stop escaping sidebar content HTML (entries contain <code> tags)
- Fix inline sidebar JSON: use Html.cdata_script instead of Html.txt
to prevent HTML-escaping inside <script> tags
- Add --xo-* CSS custom properties for x-ocaml cells in light/dark themes
- Fix support file registration: use 'opam var share' instead of
'opam var x-ocaml:share' (works without x-ocaml being an opam package)
- Suppress empty <li> from config-only extension tags (@x-ocaml.*)
- Add worker_url field to jtw opam findlib_index.json
- Refactor x-ocaml.js worker URL discovery to support both direct
worker_url and day10-style version/content_hash paths

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

The inline script loader hardcoded ./_x-ocaml/x-ocaml.js relative to the
page, but support files live under odoc.support/ at the doc root. Switch
to Js_url which odoc resolves against support_uri (like odoc.css). The
backend config is now communicated via a <meta> tag instead of a script
attribute.

Also: add x-ocaml dependency on merlin-js, add odoc-interactive-extension
dependency on x-ocaml, and remove unused js_top_worker-rpc.message dep.

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

Install x_ocaml.bc.js into the opam share directory and register it as
an odoc support file so that `odoc support-files -o DIR` copies
_x-ocaml/x-ocaml.js automatically, removing the need for manual
deployment in deploy.sh.

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