Background

The Create essential articles flow has two steps: Pick your article (EssentialArticleStepPick) and Translate or write (EssentialArticleStepCreate). Confirming a pick saves it to the task metadata and moves to step 2, which displays the pick (title + approach) in the .article-box card. The parent view (EssentialArticleTool) owns currentStep.

Problem

Once a pick is confirmed there is no way back. Step 2 has no back affordance, and reloading makes it worse: the saved metadata restores the user straight into step 2. A user who mis-picked, changed their mind about the approach, or discovered the suggested article isn't what they want is stuck with it — there is no user-facing reset.

This affordance is also needed by the companion "definition of done" work: when a picked article turns out to already exist and not be attributable to the user, the intended UX is to prompt a re-pick — which requires a way back to step 1.

Proposed approach

Add a "Change article" control inside the .article-box card, aligned to the card's end (right in LTR):

• Icon + text label, not icon-only: the label names the effect ("Change article"), which is clearer than a generic "Go back", and the requirement is that users understand it at a glance and find it when they look for it. Icon via CdxIcon + @wikimedia/codex-icons (e.g. cdxIconArrowPrevious), per repo convention.
• Placement rationale: the card is the visual representation of the pick — the control that changes the pick belongs on it. That is also where users look first when they want a different article. A free-standing back button near the step header was considered, but it has a weaker association with the pick and the flow has no existing wizard-back convention to be consistent with.

Behavior:

• Click → track a back-to-pick CTA event (with the current title/approach payload, like the step's other CTAs) → return to the pick step.
• The saved metadata is not cleared by going back; it is overwritten only when the user confirms a new pick (existing confirm behavior). Backing out and returning (or reloading) without a new confirm restores the previous pick as today.
• Checklist state is untouched by navigation (its per-run reset is in scope of the companion repeatability task, not this one).

Acceptance criteria

• Step 2 ("Translate or write") offers a clearly labeled control to go back to the article pick step, visible without scrolling on desktop and mobile widths
• The control is an icon + text button inside the .article-box card, using CdxIcon with a @wikimedia/codex-icons icon
• Clicking it returns to the pick step and logs a back-to-pick CTA event
• Going back does not clear the saved pick; confirming a new article overwrites it as today
• The control is keyboard-focusable with an accessible name

New user-facing text goes through i18n/en.json + qqq.json.