# 021 — Contextual "?" help icons linking into Docs

## Summary

Every major UI section should have a "?" icon that opens the Docs panel scrolled
to (and highlighting) the relevant section, instead of the user having to find it
themselves in the Docs accordion.

## Scope

- A small reusable `HelpIcon`/`HelpLink` component: renders a "?" affordance,
  accepts a target docs section id, and on click opens the Docs panel
  (`NavMenu`'s `docs` panel / `Docs.tsx`) navigated to that section.
- Add one to each major component per the README's block diagram: `FilterBar`,
  `LogTimeline`, `LogPreview`, `Metrics`, `Dashboards`, and NavMenu's own
  Settings/Presets panels.
- Docs panel: support being opened with a target section id (not just opened to
  the top/last-open accordion item) — expand the right accordion section and
  scroll it into view.
- "Flash" behavior: when navigated to via a "?" icon, the target paragraph/section
  visually flashes (e.g. a brief background-color pulse) so the user's eye finds it
  immediately, then settles back to normal styling.

## Acceptance criteria

- Clicking a "?" icon on any of the listed components opens Docs, expands the
  correct accordion section, scrolls it into view, and it visibly flashes.
- Clicking the same icon twice in a row re-triggers the flash (not just a no-op
  because the panel is already open to that section).
- Docs opened normally (via the NavMenu Docs button, not a "?" icon) behaves as
  today — no flash, no forced section.

## Depends on

None — builds on the existing `Docs.tsx` / NavMenu docs panel.