Inspector comment placed in shared component definition instead of call-site page

[bailob]

Summary

When using the Inspector to add a comment on a rendered element that comes from a shared component (e.g. a <Heading> or <PageShell> component defined once in the slide file and reused across multiple pages), the @slide-comment marker is written into the shared component's definition, not the call site.

This means the marker cannot be resolved to a specific page — the agent (or human) reading the marker has no way to determine which page the comment was meant for.

Environment

• @open-slide/core@1.10.0

Minimal reproduction

const PageShell = ({ children, heading }: { children: React.ReactNode; heading?: string }) => (
  <section>
    {heading ? <h2>{heading}</h2> : null}
    <div>{children}</div>
  </section>
);

const PageA: Page = () => <PageShell heading="Intro">content A</PageShell>;
const PageB: Page = () => <PageShell heading="Details">content B</PageShell>;

1. Open PageA in the editor.
2. Use Inspector → click on the <h2> heading → add a comment: "change this title".
3. Observe: the @slide-comment marker lands inside PageShell definition, not inside PageA.

Actual behavior

The comment lands at the shared component definition. Neither an agent nor a human reading the source can determine which page the comment was targeting. The only workaround is to ask the user which page they were viewing — which breaks the headless apply-comments workflow.

Expected behavior

The comment should be placed in or near the call site (the specific page component) so the target page is unambiguous. If that's not feasible with React's source mapping, the inspector could at minimum warn the user that the element belongs to a shared component and the comment will land at the definition site.

Related

• Inspector image crop writes shared component styles to all instances #213 — same root cause for image crop operations in shared components
• feat(core): warn on shared-image edits and add split-shared-images skill #236 — adds guardrail warnings for shared images, but does not cover comment markers