rpi v0.3.17

Added

• TUI plugin panels support positioned transcript, sidebar, and popup layouts,
  including pet companion and live run statistics panels. Task lists and plans
  retain their current state across tool updates and restored sessions.
• TUI prompts accept multiple pasted image paths, clipboard screenshots, and
  copied image files on Windows and macOS. Image-only prompts, steering, and
  follow-up messages retain their attachments; dequeuing restores them to the
  draft, and clearing the draft removes pending images.
• User and tool images are normalized for model input with Pi's default
  2000-pixel dimensions and 4.5 MiB base64 limit, including orientation handling,
  format conversion, and explicit notices when an image cannot be processed.

Fixed

• Empty assistant starts and whitespace-only streaming updates no longer insert
  a blank row before the reply. Message spacing appears only with visible content.
• The footer displays the current thinking level when starting or restoring a
  session. Tool output hints consistently identify Ctrl+O for expansion and
  Ctrl+T for showing or hiding thinking blocks.
• Image visibility settings now apply to previews and restored history. Terminal
  image detection includes Ghostty, WezTerm, and Warp; Kitty rendering preserves
  aspect ratio, reserves layout rows, and removes obsolete placements.
• Supporting Unix terminals enable enhanced keyboard reporting so Shift+Enter
  can be distinguished from Enter and inserts a newline rather than submitting.
• The self-update tests resolve fixture paths consistently with production
  validation, avoiding macOS ancestor-link path mismatches and exercising the
  stale staging cleanup branch.
• Documentation topic descriptions reference the unified C ABI rather than
  obsolete ABI v2/v3 entrypoints.