chore_ux_polish_followup: UX-audit polish follow-up (dark-mode long-tail + IA + forms)

[github-actions]

Problem

UX-audit polish follow-up (dark-mode long-tail + IA + forms)

(Auto-created by reconcile-tracking-issues from the planned-feature folder — the
idea.md is the source of detail; run /idea-preflight to verify claims against the
current tree before execution.)

Status

• Stage: IDEA
• Priority: P2

Definition of done

• See the acceptance criteria in the linked idea.md (backfill this checklist at the SPEC stage).

Artifacts

• Idea: docs/00_overview/planned_features/02_mvp2/chore_ux_polish_followup/idea.md

How to execute

Run /idea-preflight, then /pipeline docs/00_overview/planned_features/02_mvp2/chore_ux_polish_followup --auto.