- Path icons: use uniform scaling (preserve aspect ratio instead of squishing),
fillRule 'evenodd' for compound paths with cutouts, transparent fill for
stroke-only icons, strokeUniform to keep stroke width constant
- Text centering: use actual Fabric rendered height (fontSize * lineHeight)
for cross-axis centering instead of declared height
- Hover cursor: use default arrow instead of move/crosshair on elements
- Stream reliability: server sends keep-alive pings every 15s during API TTFT,
forwards thinking_delta events, client resets timeout on ping/thinking chunks
- Remove silent fallback from streamChat to generateCompletion (was causing
double requests when server is unresponsive)
- Add 3-minute timeout to generateCompletion
- AI prompts: instruct model to preserve icon aspect ratios
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