Task: Remove redundant AI Design progress banner

Identity

Task ID: 20260904-remove-design-progress-4e8a1c73
Mode: Feature
Branch: codex/20260904-remove-design-progress-4e8a1c73-remove-design-progress
Worktree: D:\Datas\OthersProjects.codex-worktrees\makelore\20260904-remove-design-progress-4e8a1c73
Base commit: 403236115b
Owner: codex-root
Status: Ready for Integration

Remove the visible AI Design assistant-progress banner from the main conversation pane. The right-side “AI 听懂的想法” projection remains the sole surface for the currently organized design understanding.
Preserve immediate provisional user messages, their 发送中 / 正在确认 feedback, canonical assistant replies, and the existing internal stream reconciliation.
Update focused Renderer regression coverage only. Do not change the Works Square server, Electron Main/API contracts, Current Specification authority, generation, navigation, packaging, publication, or unrelated project records.

The user explicitly identified the progress banner as duplicated information and requested that it be removed. It must not be replaced by another central loading surface.
Raw assistant deltas remain non-canonical and must stay out of the conversation. Removing their presentation must not remove their Store state or change operation identity and failure recovery.
Keep the pending user bubble as the honest acknowledgement that a send was accepted locally; only the redundant assistant-side banner is removed.
Concurrent Task Gate and Planning Gate passed in the managed isolated worktree from exact client main base 403236115bf81e7617856cd8219b1be23f6abbb8.
The root integration task overlaps the same AI Design area but owns only root/canonical reconciliation; this feature task owns the component and focused test in isolation.
ADR-007 remains unchanged: the server Current Specification is semantic authority, while the right-side youth summary is its secondary client projection.

DesignConversationPane no longer subscribes to assistantStreams for visible presentation and no longer renders the “AI 正在整理你的想法” / result-confirmation banner in the conversation timeline.
Raw assistant deltas remain Store-owned transport state and still never appear as committed chat content. The final canonical assistant turn remains unchanged.
Provisional user messages and their 发送中 / 正在确认 labels remain visible, so removing the duplicated assistant banner does not remove send acknowledgement.
The right-side “AI 听懂的想法” card and all Current Specification behavior are unchanged.

Focused Renderer test: pnpm exec vitest run tests/unit/image-canvas-page.test.tsx passed 1 file / 10 tests.
TypeScript: pnpm exec tsc --noEmit passed.
Scoped ESLint for the changed component and test passed.
The isolated worktree dependencies were restored from the existing lockfile with offline, frozen resolution and lifecycle scripts disabled; no dependency version or lockfile changed.

Integrate this source commit after the existing root AI Design integration task has safely completed or released its ownership. Do not overwrite that task's dirty canonical-document reconciliation or its three preserved foreign records.

Target: .project-docs/30-worklog/current-state.md, AI Design presentation wording in .project-docs/20-architecture/system-overview.md, and the corresponding rule in .project-docs/40-domain/business-rules.md.
Proposal: record that raw assistant deltas stay internal and invisible in the main conversation; the right-side Current Specification projection is the single surface for the AI's organized understanding. The main timeline shows provisional/canonical user messages and canonical assistant turns, without a separate assistant-progress banner.
Evidence: the user explicitly identified the banner as duplicated information and requested its removal; focused Renderer coverage confirms the banner is absent while send acknowledgement remains.
Future impact: later conversation changes should not reintroduce a second summary or progress card into the timeline merely because assistant delta transport state exists.
Semantic conflict: this narrows the prior task's optional visible progress projection; it does not change ADR-007 or server authority. Human confirmation is already present in this task request.