UX second pass: icon-only header, pane-toggle cue, schema columns, facet cleanup

docs/ux-second-pass.md

@@ -8,65 +8,9 @@ record the resolution into the contract (`docs/architecture/09`+`10` and the rel
 
 ## Open
 
-- **Two visible "Export" buttons** (`App.tsx` header — workspace export;
-  `ChartExport.tsx` in the preview header — per-chart export). Same label,
-  different scope, both visible at once. Candidate fix: rename one ("Export
-  chart" / "Export workspace") or differentiate via grouping.
-
-- **"LATER" facet placeholders in Chart Builder shelves**
-  (`ChartBuilderModal.module.css` → `.facetSlot`/`.facetTag`). Internal roadmap
-  language shipped to users. Either hide the affordance until faceting works or
-  write user-facing copy.
-
-- **Default snippet names are timestamps** ("Snippet 2026-06-10 18:04:37") — the
-  library reads like a downloads folder next to builder-generated names ("Bar
-  chart of count by Ship Mode"). Candidate: derive a content-based name from the
-  spec (mark + encoded fields) when the user never renames.
-
-- **Fit-mode tab labels** ("Original / Width / Height / Full", `LivePreview.tsx`)
-  are terse for a first-time user; tooltips likely suffice.
-
-- **Donate is the most saturated element on screen** (header soft-accent wash) —
-  visually outranks Publish/Build Chart. Decide whether intentional.
-
-- **Left rail affordance** (`PaneToggleStrip.tsx`): three unlabeled glyphs + a
-  tall empty strip; pane toggles aren't discoverable without hovering.
-
-- **Pane toggle pressed state = hover state** (`PaneToggleStrip.module.css`).
-  The pressed chip is a `--layer-02` fill — the same fill the strip's IconButtons
-  use on hover — so hovering an off toggle looks identical to an on toggle at
-  rest. (The pressed chip's `--border-strong` border used to disambiguate; it was
-  dropped in the box-discipline pass.) Candidate cues: a filled/accent glyph,
-  an inset edge marker, or restoring a border for the on state only.
-
-- **Dataset detail schema density** (`DatasetsModal.tsx`): one field per row
-  makes a 25-column dataset a long scroll before the preview table; a denser
-  two-column field list would fit overview + schema + preview on one screen.
-
-- **Chart theme picker placement & header crowding** (`LivePreview.tsx` — ChartThemeControl).
-  The picker sits in the preview header because nesting a SelectControl inside the
-  PreviewSettings popover is impossible today (one-open-popover registry: the select would
-  close/unmount its own parent). Header now holds Fit + theme + export + gear; at narrow
-  pane widths the long trigger labels ("FiveThirtyEight", "Urban Institute") may crowd it.
-  Council questions: does the picker deserve header prominence (the "transform your chart"
-  showcase) or settings-cluster placement (a persistent global pref); should the popover
-  registry learn nesting; should the preset block also carry a group _heading_ (a
-  divider now bounds it — 2026-06-12, user-decided; `SelectControl` `dividerBefore`)?
-
-- **"Edit themes…" action row inside the value picker** (`LivePreview.tsx` —
-  ChartThemeControl). A non-value action lives inside a single-select disclosure (the
-  VS Code theme-picker pattern), placed after the custom-themes block and before the
-  preset roster (first-use feedback: at the very bottom it was invisible without
-  scrolling). The ours-vs-presets divider (2026-06-12) now bounds it below; remaining
-  council questions: should the action row itself be styled distinctly from the value
-  rows; is a mid-list row that opens a modal instead of selecting surprising to AT
-  users?
-
-- **Theme Builder config editor is a plain textarea** (`ThemeBuilderModal.tsx`). Monaco
-  (with the Vega-Lite config schema for completions) would match the main editor but is
-  heavy inside a modal and untested in that mounting. Revisit whether the builder deserves
-  a Monaco instance, and whether the gallery's canvas charts need text alternatives
-  beyond the per-card captions.
+_(empty — the 2026-06-13 batch resolved all eleven open items; resolutions live in
+spec §01B/§02/§03D, arch 09 §5 (header worked example), and arch 10 §5 (toggle-strip
+pressed cue, SelectControl action row + trigger cap, no-affordance-for-unbuilt-features).)_
 
 ## Deferred (not design debts, revisit on demand)
 
@@ -74,3 +18,8 @@ record the resolution into the contract (`docs/architecture/09`+`10` and the rel
   be a progressive enhancement on top of the chooser model, not a replacement. Revisit if
   real usage asks for it (likely alongside Phase 4 faceting, where drag-to-shelf reads most
   naturally).
+
+- **Theme Builder config editor stays a plain textarea** (decided 2026-06-13) — a second
+  Monaco mount is heavy inside a modal for an occasional surface; the parse error is the
+  feedback channel that matters. Revisit only if real usage asks for config completions.
+  The gallery's per-card captions stand as the canvas charts' text alternative.