[pratikbuilds]

Fixes #153.

What changed

.composer was a scroll container (max-height: 70vh; overflow-y: auto). The attachment tray (PromptInputFloat) is drawn above the message box with absolute bottom-full, so that scroll container cut it down to a sliver.

The scroll was there to keep the send, stop, attach and mic controls on screen. Only the rows above the box actually need it: the attach and send errors, the earlier-document caution and the suggested replies. The textarea already caps itself at min(200px, 30vh) and scrolls.

This PR:

• stops .composer from scrolling but keeps its 70vh cap
• wraps the rows above the box in one .composer-notes region (workspace/index.tsx). That region scrolls once the composer reaches its cap, so the box below keeps its full height, and the attachment tray and model list float above it unclipped.
• deletes the :has(...) { overflow: visible } exceptions that worked around the old clipping. The model-list exception isn't needed without the clip. The .sbpick and .reviewer-stance exceptions matched nothing: no markup in apps/web/src uses those classes.

The index.tsx diff is mostly reindentation from the wrapper.

Verification

• bun run lint, format:check and typecheck pass. The web unit tests pass (104).
• Checked in the running app (Chrome) on a project's workspace composer:
  • Attached a PNG with the paperclip, a second by dropping it on the box and a third by pasting it into the textarea. Each tile showed in full above the box, ending up as a stack of three with a count badge. Removing them cleared the tray.
  • With the attachments held, entered 120 lines of text. The textarea stopped at 200px and scrolled, the tray stayed visible, and mic, attach and send stayed reachable.
  • Repeated the attachment and long-text checks in dark mode.
  • Opened the model profile list on the new-project composer. It floats above the box, unclipped.
  • Worst case for the notes: both errors, the caution, four 80-character suggested replies (the most suggestedReplies allows) and long text at once. In a full window the composer grew to 505px with nothing scrolling. With the cap forced to 350px (70vh of a 500px window), the notes scrolled as one region, the box kept its 214px, and the tile, attach and send stayed visible. With no notes, the empty region takes no space.

[corbits-triage]

Triage: Pass

No changes needed from you. A maintainer will review this pull request.

[corbits-triage]

No defects reported.