Implemented robust streaming handling for assistant replies: a placeholder message is inserted, unread sessions are flagged when the user is in a different chat, and scroll‑to‑bottom/ tip logic is applied once the stream completes.
• Added copy‑to‑clipboard support for code blocks with visual feedback.
• Re‑implemented Markdown to clean trailing whitespace in code blocks, preserve formatting, add copy buttons, and refine table & blockquote handling.
• Introduced new CSS classes (.codeblock, .codeblock__header, .codeblock__copy, etc.) to style the code block wrapper, header bar, copy button, and pre/code area.
• Updated the front‑end to wire up the new copy handler, manage pending scroll targets, and keep unread state in sync.
• Minor cleanup of stray tags and comments throughout the renderer.
• Minor fixes to ensure proper scrolling behavior when the user scrolls away from the bottom during streaming.
• Added descriptive comments and ensured cross‑browser copy functionality via navigator.clipboard.
• Updated the markdown renderer to keep raw newlines for copy‑paste fidelity and to escape HTML entities correctly.
• Adjusted CSS to match existing theme variables and provide smooth copy button transitions.
Add PUT /sessions/{session_id}/messages/{index} to edit a user message and prune all subsequent messages.
Add POST /sessions/{session_id}/regenerate to regenerate an assistant response from a given index (supports optional streaming).
Introduce EditMessageRequest and RegenerateRequest schemas.
Update the frontend to: • allow in‑place editing of user messages with an auto‑focusing textarea; • copy messages to clipboard; • regenerate assistant responses via a button.
Add new CSS rules for message options bars and the editing textarea.
Backend: HTML-unescape and strip <think>/<thinking> from generated titles; trim and return cleaned value; add debug logs.
Electron: send 'window-focused' from main; expose onWindowFocus in preload.
Frontend: stream-safe AssistantMessageContent with collapsible Thoughts; switch streaming render to React state updates; autofocus textarea on window focus/new chat and when clicking empty chat area; sanitize session title client-side.
Markdown: support blockquotes; allow '-' or '*' bullets; simplify <think> removal to handle streaming; drop table wrapper div (emit <table class='nice'>); theme-aware code block headers/borders.
CSS: rounded 'nice' tables with light inner grid; blockquote styling; Thoughts toggle/panel styles.
Color: brighten Grayscale --accent.
Follow-ups: add IPC listener cleanup; ensure single source of truth for colorSchemes.
Backend
- /chat: support streaming via StreamingResponse; save full reply after stream ends. Non-stream path unchanged.
- ChatRequest: add stream flag (default false).
- GenerateTitleRequest: add model and use it instead of hardcoded llama3.
- ollama_client.chat_stream(): new async generator parsing Ollama streaming JSON (both formats).
- Remove response_model from /chat to allow streaming; non-stream still returns { reply }.
Electron
- Open external links in system browser (setWindowOpenHandler, shell.openExternal).
- New IPC: update-settings, open-external-link.
- Set minimum window size; preload exposes updateSettings and openExternalLink.
Frontend (React)
- Streaming UI with live chunking; sticky-bottom only when user at bottom.
- Per-session scroll persistence and robust restore.
- New message tip to jump to latest reply when scrolled up.
- Disable Send while sending; spinner.
- General Settings: stream output toggle; propagate model/stream changes.
- Apply color scheme at boot; extract colorSchemes helper.
- Sidebar UX tweaks and unread badges.
Markdown/rendering
- Code blocks: language title bar and wrapper.
- Tables: GitHub-style parsing, per-cell borders, rounded wrapper, spacing, alignment.
- Headings: remove blank line after h1-h4.
- <hr>: handle after tables; strip following whitespace.
- Links: target=_blank with icon and URL tooltip.
Styles
- Add styles for code/table wrappers, new-message tip, toggle, spinner; hover/active vars; narrower sidebar.
API notes / breaking changes
- /chat accepts stream=true and returns text/plain streamed chunks.
- generate-title now requires a model.
- Non-stream /chat response shape unchanged.
