Carlos Florêncio
2.6 KiB
2.6 KiB
status, system, created, owners
| status | system | created | owners | |
|---|---|---|---|---|
| active | ui | 2026-09-18 |
|
Bounded user-message rendering
Overview
Large user messages need bounded previews so users can navigate the conversation. UI owns this presentation contract. Tasks and agents retain message storage and delivery ownership.
Requirements
REQ-UI-BOUNDED-USER-MESSAGE-001: Bounded user-message previews
Intent: Keep large messages accessible without rendering their complete contents during conversation navigation.
Acceptance criteria
- AC-UI-BOUNDED-USER-MESSAGE-001.1: When a user message exceeds 200 logical lines or 16,000 UTF-16 code units, its preview shall contain no more than either limit. This applies to transcript bubbles, queued previews, and pinned prompts. A logical line ends at LF, CRLF, or CR.
- AC-UI-BOUNDED-USER-MESSAGE-001.2: A shortened preview shall identify omitted content and offer a full-text download. The download shall preserve the selected message representation exactly, including its final character.
- AC-UI-BOUNDED-USER-MESSAGE-001.3: Raw mode, queued-row expansion, pinned-prompt expansion, and workflow-instruction disclosure shall retain the rendering limit. No preview action shall mount the complete oversized message.
- AC-UI-BOUNDED-USER-MESSAGE-001.4: Preview shortening shall not alter stored messages, agent input, existing copy behavior, queue editing, or attachment data. Ordinary messages shall retain Markdown, mentions, file links, and instruction disclosure.
- AC-UI-BOUNDED-USER-MESSAGE-001.5: Desktop and phone users shall have a visible, keyboard-accessible download action. Phone targets shall measure at least 44 CSS pixels. Previews shall not cause document-level horizontal overflow.
- AC-UI-BOUNDED-USER-MESSAGE-001.6: With a 3,921-line generated log selected, users shall switch sessions and send a subsequent small message successfully. The regression scenario shall produce no WebSocket request-timeout errors.
Compatibility
Pinned previews retain Markdown and the existing desktop-only navigation contract in last-prompt pinning. The size limit governs source content passed to rendering, including expanded previews. The phone retains its existing scroll-to-last-prompt control.
Out of scope
- Message admission limits, persisted truncation, and automatic attachment conversion.
- Provider context limits, agent-stream recovery, and RPC timeout changes.
- Assistant output, repository Markdown, share snapshots, and prompt-history plugin views.