Improve AutoQuant chat chrome and long-context continue

[renjianfj163]

Summary

• Isolate conversation composer drafts and memoize transcript updates to reduce typing lag on long AutoQuant chats
• Clear stuck SessionExecutionManager occupancy that left Sessions stuck “busy”
• Shorten sidebar/top-bar chrome titles (标的 · 方法) with spaced abbreviation ellipsis; keep full title on hover
• Replace the AutoQuant long-context continue modal with an inline transcript card that docks to “整理并续作”
• Add OpenTypeBB Tencent CN equity quote plumbing and UI realtime quote helpers

Notes

• Branch is behind current dev by ~53 commits; please rebase/merge before landing if CI requires it
• Excluded satellites/ (owned by the satellite branch) and local MCP credential files from this commit

Test plan

• Long AutoQuant chat: typing stays responsive while draft changes
• Stuck “Session execution is busy” clears after occupancy release
• Long research titles shorten in sidebar; hover shows full title; abbreviation … appears when shortened
• Context-continue card appears inline; Later docks toward header “整理并续作”; header reopen works
• Confirm archive-and-continue still archives and opens continue landing
• CN quote helpers / Tencent provider unit specs pass where applicable

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