fix: 优化看板产物预览体验

docs/comet/archive/2026-08-13-dashboard-preview-ux/brief.md

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+# Outcome
+
+Dashboard 产物预览在抽屉和全屏模式下保持清晰、可读和可操作。
+
+# Scope
+
+- 修复 Markdown、YAML、JSON 预览表格表头在窄列中逐字折行的问题，不改变表格正文的换行策略。
+- 调整全屏预览目录的尺寸与字号。
+- 为全屏预览提供 Esc 关闭整个预览的键盘交互。
+- 对齐文件路径复制按钮与路径文本的垂直视觉中心。
+
+# Non-goals
+
+- 不改变预览内容的解析、目录条目生成或文件复制语义。
+- 不改变普通抽屉预览的 Esc 行为。
+
+# Acceptance examples
+
+- A1：预览中的表头始终单行显示；仅当表头无法在可用宽度内显示时，预览可横向滚动查看完整表头；正文保持原有换行规则。
+- A2：全屏预览目录栏宽度为 250px；“目录”标题为 14px，目录链接为 16px。
+- A3：全屏预览打开时按 Esc 关闭整个产物预览；非全屏抽屉不会注册该快捷键。
+- A4：预览头部复制路径按钮与相邻路径文本在同一垂直中心线上；路径文本不保留段落默认上下外边距。
+
+# Constraints and invariants
+
+- 保持现有全屏目录仅在全屏状态显示的规则。
+- 继续使用当前共享 Markdown 预览渲染管线。
+
+# Decisions
+
+- 仅表格表头不折行；不强制表格按正文内容扩张宽度，正文保持原有换行规则。
+- 全屏目录使用 250px 宽度、14px 标题和 16px 链接。
+- Esc 仅在全屏预览期间生效，并关闭整个预览弹窗。
+- 路径文本显式清除段落外边距，避免样式基线变化导致与复制按钮错位。
+
+# Open questions
+
+- [blocking] CONFIRM: 确认以上目标、范围、关键决定、验收项和非目标。
+
+# Verification expectations
+
+- 更新 Dashboard Web 源码契约测试；执行相关 Vitest 测试与构建检查。

docs/comet/archive/2026-08-13-dashboard-preview-ux/comet-state.yaml

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+schema: comet.native.v4
+name: dashboard-preview-ux
+language: zh-CN
+phase: archive
+status: done
+state_version: 25
+brief: brief.md
+spec_changes:
+  - capability: dashboard-artifact-preview
+    operation: create
+    source: specs/dashboard-artifact-preview/spec.md
+workspace:
+  isolation: branch
+  change_branch: comet/dashboard-preview-ux
+  target_branch: master
+  finish: keep
+loop:
+  stage: done
+  goal_cycle: 2
+  iteration: 4
+  attempt: 1
+  retry_epoch: 0
+  failed_iteration_count: 0
+  no_progress_count: 0
+  execution_failure_count: 0
+  previous_unresolved_ids: []
+  next_action: null
+acceptance:
+  - id: A1
+    source: brief.md
+    text: A1：预览中的表头始终单行显示；仅当表头无法在可用宽度内显示时，预览可横向滚动查看完整表头；正文保持原有换行规则。
+    result: passed
+    reason:
+      text: 表头不折行。
+      truncated: false
+  - id: A2
+    source: brief.md
+    text: A2：全屏预览目录栏宽度为 250px；“目录”标题为 14px，目录链接为 16px。
+    result: passed
+    reason:
+      text: 窄宽度可横向查看完整表头。
+      truncated: false
+  - id: A3
+    source: brief.md
+    text: A3：全屏预览打开时按 Esc 关闭整个产物预览；非全屏抽屉不会注册该快捷键。
+    result: passed
+    reason:
+      text: 仅表头新增不换行，正文行为保持不变。
+      truncated: false
+  - id: A4
+    source: brief.md
+    text: A4：预览头部复制路径按钮与相邻路径文本在同一垂直中心线上；路径文本不保留段落默认上下外边距。
+    result: passed
+    reason:
+      text: 目录栏为 250px。
+      truncated: false
+  - id: A5
+    source: specs/dashboard-artifact-preview/spec.md
+    text: Dashboard displays artifact content in a side drawer and supports an
+      expanded fullscreen reading mode.
+    result: passed
+    reason:
+      text: 目录标题为 14px。
+      truncated: false
+  - id: A6
+    source: specs/dashboard-artifact-preview/spec.md
+    text: Rendered Markdown, YAML, and JSON preview tables keep header labels on one
+      line. When a header needs more horizontal space than its container, the
+      preview provides horizontal scrolling instead of wrapping the header
+      label. This does not change the existing wrapping behavior of table body
+      cells or force a table to expand to the width of its body content.
+    result: passed
+    reason:
+      text: 各层目录链接为 16px。
+      truncated: false
+  - id: A7
+    source: specs/dashboard-artifact-preview/spec.md
+    text: The table of contents is visible only while an artifact preview is
+      fullscreen and has headings. Its sidebar is 250px wide. The directory
+      label uses a 14px font size and each directory link uses a 16px font size.
+    result: passed
+    reason:
+      text: 全屏时 Escape 关闭整个预览。
+      truncated: false
+  - id: A8
+    source: specs/dashboard-artifact-preview/spec.md
+    text: While fullscreen artifact preview is active, pressing Escape closes the
+      artifact preview. The side-drawer preview does not install this Escape
+      shortcut.
+    result: passed
+    reason:
+      text: 非全屏不注册 Escape，目录仅全屏显示。
+      truncated: false
+  - id: A9
+    source: specs/dashboard-artifact-preview/spec.md
+    text: When a preview path is available, its copy button and path text share a
+      vertically centered layout in the preview header. The path text has no
+      paragraph margins that could displace it from the copy button.
+    result: passed
+    reason:
+      text: 路径行垂直居中，专用样式覆盖 AntD 段落外边距。
+      truncated: false
+builder_handoff:
+  candidate_id: e5f35db6-59f0-44d4-8014-47492a4932ce
+  identity_provider: skill-coordinated
+  builder_execution_ref: skill-coordinated:builder:bf21628d-6ee3-450e-98a4-4e1dc4d91dab
+  iteration: 4
+  summary:
+    text: 按用户要求移除 0.4.0-beta.19 版本与 Changelog；保留已完成人工视觉验收的看板预览修复。
+    truncated: false
+  addressed_acceptance_ids:
+    - A1
+    - A2
+    - A3
+    - A4
+    - A5
+    - A6
+    - A7
+    - A8
+    - A9
+  checks:
+    - name:
+        text: npx vitest run test/domains/dashboard/web-source.test.ts
+        truncated: false
+      result: passed
+      note:
+        text: 16 tests passed
+        truncated: false
+    - name:
+        text: npx prettier --check domains/dashboard/web/src/main.jsx
+          domains/dashboard/web/src/styles.css
+          test/domains/dashboard/web-source.test.ts
+        truncated: false
+      result: passed
+      note:
+        text: All changed source files are formatted
+        truncated: false
+    - name:
+        text: git diff --check
+        truncated: false
+      result: passed
+      note:
+        text: No whitespace errors
+        truncated: false
+  checks_truncated: false
+  known_limits:
+    - text: pnpm build 在 Node 24 本地环境中 TypeScript 阶段持续无输出，未将其记为通过；用户已完成人工视觉验收。
+      truncated: false
+  known_limits_truncated: false
+  submitted_at: 2026-08-13T13:14:31.103Z
+blockers: []
+verification:
+  candidate_id: e5f35db6-59f0-44d4-8014-47492a4932ce
+  identity_provider: skill-coordinated
+  verifier_execution_ref: skill-coordinated:verifier:513b026a-29e8-4b8e-8b3c-c813a94d3d4e
+  iteration: 4
+  attempt: 1
+  assurance: skill-coordinated
+  verdict: pass
+  checks:
+    - id: dashboard-web-source
+      name:
+        text: npx vitest run test/domains/dashboard/web-source.test.ts
+        truncated: false
+      argv_display:
+        - text: vitest
+          truncated: false
+        - text: run
+          truncated: false
+        - text: test/domains/dashboard/web-source.test.ts
+          truncated: false
+      argv_truncated: false
+      cwd_ref: .
+      status: passed
+      exit_code: 0
+      duration_ms: 27418
+  summary:
+    text: A1-A9 均通过；未新增 beta.19 版本或 Changelog。
+    truncated: false
+  risks: []
+  risks_truncated: false
+  completed_at: 2026-08-13T13:16:12.432Z
+history:
+  - goal_cycle: 1
+    iteration: 1
+    attempt: 1
+    outcome: pass
+    unresolved_ids: []
+    summary:
+      text: 独立 Verifier 确认 A1-A9 全部通过；Runtime 已执行 Dashboard Web 源码契约测试。
+      truncated: false
+    completed_at: 2026-08-13T12:18:52.477Z
+  - goal_cycle: 1
+    iteration: 1
+    attempt: 1
+    outcome: recovery
+    unresolved_ids: []
+    summary:
+      text: 需求收窄为仅禁止表格表头换行，不改变表格正文或整体表格宽度策略。
+      truncated: false
+    completed_at: 2026-08-13T12:23:37.486Z
+  - goal_cycle: 1
+    iteration: 2
+    attempt: 0
+    outcome: recovery
+    unresolved_ids: []
+    summary:
+      text: Native confirmed acceptance criteria changed
+      truncated: false
+    completed_at: 2026-08-13T12:24:59.818Z
+  - goal_cycle: 2
+    iteration: 1
+    attempt: 1
+    outcome: pass
+    unresolved_ids: []
+    summary:
+      text: 独立 Verifier 确认 A1-A9 全部通过。
+      truncated: false
+    completed_at: 2026-08-13T12:33:25.334Z
+  - goal_cycle: 2
+    iteration: 1
+    attempt: 1
+    outcome: recovery
+    unresolved_ids: []
+    summary:
+      text: 实际样式中未分层 p 规则覆盖 Tailwind m-0；改用项目样式高优先级选择器显式清除路径段落外边距。
+      truncated: false
+    completed_at: 2026-08-13T12:44:12.470Z
+  - goal_cycle: 2
+    iteration: 2
+    attempt: 1
+    outcome: pass
+    unresolved_ids: []
+    summary:
+      text: A1-A9 均符合当前 brief 与 spec。
+      truncated: false
+    completed_at: 2026-08-13T12:49:04.976Z
+  - goal_cycle: 2
+    iteration: 2
+    attempt: 1
+    outcome: recovery
+    unresolved_ids: []
+    summary:
+      text: 补充已发布看板缺陷修复的版本与 Changelog 元数据。
+      truncated: false
+    completed_at: 2026-08-13T13:13:08.246Z
+  - goal_cycle: 2
+    iteration: 3
+    attempt: 0
+    outcome: recovery
+    unresolved_ids: []
+    summary:
+      text: 按用户要求不新增 0.4.0-beta.19 版本或 Changelog。
+      truncated: false
+    completed_at: 2026-08-13T13:13:53.623Z
+  - goal_cycle: 2
+    iteration: 4
+    attempt: 1
+    outcome: pass
+    unresolved_ids: []
+    summary:
+      text: A1-A9 均通过；未新增 beta.19 版本或 Changelog。
+      truncated: false
+    completed_at: 2026-08-13T13:16:12.432Z
+history_overflow:
+  dropped_entries: 0
+  first_dropped_at: null
+  last_dropped_at: null
+  outcome_counts:
+    pass: 0
+    fail: 0
+    blocked: 0
+    execution-error: 0
+    recovery: 0
+verification_result: pass
+verification_report: verification.md
+archived: true
+created_at: 2026-08-13T12:05:30.984Z

docs/comet/archive/2026-08-13-dashboard-preview-ux/specs/dashboard-artifact-preview/spec.md

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+# Dashboard artifact preview
+
+## Purpose
+
+Dashboard displays artifact content in a side drawer and supports an expanded fullscreen reading mode.
+
+## Preview tables
+
+Rendered Markdown, YAML, and JSON preview tables keep header labels on one line. When a header needs more horizontal space than its container, the preview provides horizontal scrolling instead of wrapping the header label. This does not change the existing wrapping behavior of table body cells or force a table to expand to the width of its body content.
+
+## Fullscreen table of contents
+
+The table of contents is visible only while an artifact preview is fullscreen and has headings. Its sidebar is 250px wide. The directory label uses a 14px font size and each directory link uses a 16px font size.
+
+## Keyboard closing
+
+While fullscreen artifact preview is active, pressing Escape closes the artifact preview. The side-drawer preview does not install this Escape shortcut.
+
+## Header alignment
+
+When a preview path is available, its copy button and path text share a vertically centered layout in the preview header. The path text has no paragraph margins that could displace it from the copy button.