[DOCS] Per-feature platform availability is not discoverable in docs

Documentation Type

Unclear/confusing documentation

Documentation Location

_No response_

Section/Topic

Making clear which features, commands, tools, settings, etc, apply to which platform and product

Current Documentation

_No response_

What's Wrong or Missing?

Docs that don't say which surface a feature applies to are documentation you can't trust without running an experiment, and the Claude Code docs currently don't say. Each surface — CLI, desktop, web, GitHub Actions, SDK — exposes a materially different feature set, but per-feature pages rarely indicate which surface they describe.

Three from a single recent session on the web:

• /loop acknowledges a scheduled job but the scheduling primitives aren't present in the web environment, so nothing ever fires.
• /goal works, but its page (/en/goal) lists "non-interactive mode, desktop app, and Remote Control" under non-interactive runs and never mentions the web at all.
• /btw's page (/en/interactive-mode#side-questions-with-%2Fbtw) describes overlay-based, non-blocking, ephemeral behavior, but on the web the /btw prefix is stripped, the message enters conversation history as a normal turn, and it can't be sent during execution at all.

The cost is one round of trial-and-error per feature read, which has been a sustained friction over the month I've been on the web.

Minimum fix: a per-feature "Available on" badge near each command/feature heading (e.g. CLI · Desktop · Web · GitHub Action · SDK).

Fuller version: a platform-selector dropdown that filters the whole docs site (Stripe, Tailwind, and MDN compatibility tables do versions of this).

---

(Filed here because /feedback from Claude Code on the web returned a 403 on multiple retries, on both the "trusted" and "full" network policies. That itself is in scope of this issue.)

Suggested Improvement

Minimum fix: a per-feature "Available on" badge near each command/feature heading (e.g. CLI · Desktop · Web · GitHub Action · SDK).

Fuller version: a platform-selector dropdown that filters the whole docs site (Stripe, Tailwind, and MDN compatibility tables do versions of this).

Impact

Medium - Makes feature difficult to understand

Additional Context

_No response_