The indicator sits in an h-0 flex row, so the default align-items: stretch
collapsed the pill to zero height and the text overflowed below the
background. Align items to the start so the pill keeps its natural height.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

Images from `generate_image` (and other tool image output) rendered as a
plain <img> in ToolImages with no click handler, so they could not be
enlarged; only markdown images and @image mentions opened the lightbox.

Each tool image is now a button that opens the existing
ImageMentionLightbox with the saved Host path, resolved through the same
attachment base URL as the inline preview. Escape, the backdrop, or the
close button dismiss it.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

…the title bar

- Replace the footer's settings button, palette popover, and profile panel
  home with a single account menu: account, personal instructions, an
  inline Light/Dark/System toggle, language, appearance settings, Settings,
  and sign out.
- Remove the active project path from the footer; the highlighted session
  already shows its project.
- Remove the title bar. Web only reserves the safe area and floats the
  sidebar trigger; the frameless desktop window keeps a borderless drag
  strip for the window controls.
- Move desktop workspace switching from title bar tabs to a switcher in the
  sidebar header.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

fix: keep scroll time indicator background behind its label

fix(transcript): open generated images in the lightbox on click

feat(sidebar): one account menu, no title bar

Co-Authored-By: Claude Opus 5.5 <[email protected]>

release: prepare v0.7.5