fix: improve the outfit selection grid UI

[jvsena42]

Summary

The Create-outfit "Select items" grid drew each item's name on top of its photo with no line
limit, so on a 100dp cell a long name covered the whole garment and was unreadable either way
(see #44). The name is now gone from those cells — the cell is the photo, its border, and the
selection indicator. Each cell still exposes the item name as its content description /
accessibility label, so screen readers are unaffected.

While in the same class of bug, the wardrobe card's name was also unbounded: a four-line name pushed
its category row down and left the card misaligned with its neighbour in the grid row. It is now
capped at two lines.

Closes #44

Changes

• CreateOutfitSheet.kt / .swift — remove the name label from SelectableItemCell; add an
  outfit_item_cell test tag / accessibility identifier so journeys can target the cells, matching
  the existing clothing_card and outfit_card
• ClothingCard.kt / .swift — cap the item name at maxLines = 2 / .lineLimit(2) with tail
  truncation. No reserved second line, so one-line cards keep their current height
• journeys/outfit-item-grid.xml — new journey covering photo-only cells and selection on tap
• journeys/README.md — this is the one journey needing a populated wardrobe, so the fresh-install
  precondition note now defers to each journey's own description

Test plan

Verified on emulator-5554 (./gradlew :composeApp:assembleDebug → android run --apks …), with a
wardrobe seeded so one item's name is long enough to have wrapped to four lines before the change.
All six actions of journeys/outfit-item-grid.xml PASSED:

• Outfits tab → Create opens the sheet with the name field and "Select items" section
• android layout / uiautomator dump: two outfit_item_cell nodes at [63,1821][360,2084] and
  [392,1821][689,2084] — 100dp tall, no child text nodes (the label is gone), each carrying
  the item name as its content-desc
• Tapping the first cell shows "1 selected", a green border, and a filled check indicator
• Wardrobe tab: the long name renders as two lines with an ellipsis (was four, unbounded); both
  cards' photos stay aligned

Checklist

• ./gradlew detekt passes
• Tested on Android
• Tested on iOS — not built; this work happened on a Linux host, so the SwiftUI change is
  review-verified as a mirror of the Compose one. The iPhone/iPad #Previews need a run in
  Xcode before merging.
• Updated documentation (if applicable) — journeys/README.md

🤖 Generated with Claude Code