Extensions can now contribute walkthroughs via contributions.walkthroughs
in plugin.json. The backend validates definitions against a shared
contract (route, signal, manual, and check completion types), transports
them through the dynamic contribution envelope, and persists custom
walkthroughs from the Studio. Includes the JSON Schema, SDK version gate,
and extension scaffold support.
Generated manifests now contribute both `<slug>` and `<slug>/:tab`, forwarding
every sub-path to the same component. Adding a tab to a scaffolded extension
becomes a one-line change to TABS in frontend/index.jsx instead of a manifest
edit plus a route entry.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Extensions can now contribute Settings sections: a settings.section
PluginSlot renders below the active Settings tab with the tab id as
context. _validate_manifest grew shape checks for everything the
platform consumes declaratively — module:attr refs (entry_point,
socket_entry, models, lifecycle hooks, job handlers), jobs/schedules
shapes, and per-kind required contribution keys (nav/routes/tabs/
palette/widgets/layouts) — so a malformed block fails the install with
a message naming each problem instead of being silently dropped at
runtime. Unknown contribution kinds only warn (forward compat). The
scaffolder gained --validate <path> mirroring the same rules for
authors, wired into the conversion recipe in docs/EXTENSIONS.md.
3 new lint tests incl. one asserting every shipped builtin manifest
passes; full backend suite 1227 green; lint 0 errors; build clean;
--validate smoke-tested on a good and a bad manifest.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Juan Denis