style: refine archived habits section

frontend/e2e/habit-detail-paper-flow.spec.ts

@@ -108,7 +108,19 @@ test('habit detail paper flow is responsive, ordered, scrollable, and preserves
   await dialog.getByRole('button', { name: '关闭习惯详情' }).click()
 
   const archiveToggle = page.locator('.habit-archive-toggle')
+  const activeList = page.locator('.habit-list.plain-list').last()
+  const [activeListBox, archiveToggleBox] = await Promise.all([activeList.boundingBox(), archiveToggle.boundingBox()])
+  expect(activeListBox).not.toBeNull()
+  expect(archiveToggleBox).not.toBeNull()
+  expect(archiveToggleBox!.y - (activeListBox!.y + activeListBox!.height)).toBeGreaterThanOrEqual(24)
+  await expect(archiveToggle).toHaveCSS('background-color', 'rgba(0, 0, 0, 0)')
+  await expect(archiveToggle).toHaveCSS('border-top-width', '0px')
   await archiveToggle.click()
+  const archivedPanel = page.locator('#archived-habits-panel')
+  const [toggleOpenBox, archivePanelBox] = await Promise.all([archiveToggle.boundingBox(), archivedPanel.boundingBox()])
+  expect(toggleOpenBox).not.toBeNull()
+  expect(archivePanelBox).not.toBeNull()
+  expect(archivePanelBox!.y - (toggleOpenBox!.y + toggleOpenBox!.height)).toBeGreaterThanOrEqual(10)
   const archivedOpener = page.getByRole('button', { name: new RegExp(archivedName) })
   await archivedOpener.click()
   dialog = page.getByRole('dialog', { name: archivedName })

frontend/src/style.css

@@ -70,8 +70,8 @@ main{background:var(--surface-base)}
 .soft-button,.danger-button,.file-button,.secondary,.restore,.archived-toggle,.archived-countdowns button{background:var(--surface-raised);border-color:var(--border-cream);box-shadow:var(--highlight-inner)}
 .primary,.primary-small{background:var(--accent);color:#fff}
 .danger-button{color:var(--danger);border-color:#dba99d;background:#fff8f5}.inline-error,.purge-list-error{color:var(--danger);background:#fff0ec}.task-check[aria-pressed="true"] .task-check-mark,.habit-row.done .habit-check .task-check-mark{background:var(--success);border-color:var(--success)}
-.habit-archive-section{display:grid;gap:0}.habit-archive-toggle{width:100%;min-height:44px;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;text-align:left}.habit-archive-toggle>span{min-width:0}.habit-archive-toggle>svg:last-child{transition:transform .16s ease}.habit-archive-toggle>svg.expanded{transform:rotate(90deg)}.archived-habits{width:100%;display:grid;gap:0;background:var(--surface-raised);border:1px solid var(--border-cream);border-radius:var(--radius-card);overflow:hidden}.archived-habit-row{width:100%;min-height:44px;appearance:none;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:12px;padding:10px 12px;color:inherit;text-align:left;background:var(--surface-raised);border:0;border-bottom:1px solid var(--border-cream);font:inherit}.archived-habit-row:last-child{border-bottom:0}.archived-habit-row>span{min-width:0;display:grid;gap:3px}.archived-habit-row b,.archived-habit-row small{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.archived-habit-row small{color:var(--muted);font-size:11px}.archived-habit-row>svg{flex:none}.habit-archive-status{min-height:44px;margin:0;padding:12px;display:flex;align-items:center;justify-content:space-between;gap:12px}.app-sheet__danger{display:flex;gap:8px}.app-sheet__danger>button{min-height:44px}.habit-restore-button{flex:1}.habit-delete-button{flex:1}
+.habit-archive-section{display:grid;gap:10px}.habit-archive-toggle{width:100%;min-height:44px;display:grid;grid-template-columns:28px minmax(0,1fr) 28px;align-items:center;gap:8px;padding:0 4px;border:0;background:transparent;box-shadow:none;color:var(--text-secondary);font-weight:650;text-align:left}.habit-archive-toggle:hover{background:#fff8ee}.habit-archive-toggle:active{background:#fff1df}.habit-archive-toggle:focus-visible{outline:3px solid var(--focus-ring);outline-offset:2px}.habit-archive-toggle>svg{justify-self:center}.habit-archive-toggle>span{min-width:0}.habit-archive-toggle>svg:last-child{transition:transform .16s ease}.habit-archive-toggle>svg.expanded{transform:rotate(90deg)}.archived-habits{margin-top:2px;width:100%;display:grid;gap:0;background:var(--surface-raised);border:1px solid var(--border-cream);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--highlight-inner)}.archived-habit-row{width:100%;min-height:44px;appearance:none;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:12px;padding:10px 12px;color:inherit;text-align:left;background:var(--surface-raised);border:0;border-bottom:1px solid var(--border-cream);font:inherit}.archived-habit-row:last-child{border-bottom:0}.archived-habit-row>span{min-width:0;display:grid;gap:3px}.archived-habit-row b,.archived-habit-row small{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.archived-habit-row small{color:var(--muted);font-size:11px}.archived-habit-row>svg{flex:none}.habit-archive-status{min-height:44px;margin:0;padding:12px;display:flex;align-items:center;justify-content:space-between;gap:12px}.app-sheet__danger{display:flex;gap:8px}.app-sheet__danger>button{min-height:44px}.habit-restore-button{flex:1}.habit-delete-button{flex:1}
-@media(max-width:930px){.habit-archive-section{width:100%;gap:0}.habit-archive-toggle{width:100%;min-height:44px;appearance:none;background:var(--surface-raised);border:1px solid var(--border-cream);box-shadow:none}.archived-habits{width:100%;display:grid;gap:0}.archived-habit-row{width:100%;min-height:44px;appearance:none;grid-template-columns:minmax(0,1fr) auto;background:var(--surface-raised);border-bottom:1px solid var(--border-cream)}.habit-detail-sheet.app-sheet--detail{width:100%;border-radius:var(--sheet-radius) var(--sheet-radius) 0 0!important}}
+@media(max-width:930px){.habit-archive-section{width:100%;gap:10px}.habit-archive-toggle{width:100%;min-height:44px;appearance:none;background:transparent;border:0;box-shadow:none}.archived-habits{width:100%;display:grid;gap:0}.archived-habit-row{width:100%;min-height:44px;appearance:none;grid-template-columns:minmax(0,1fr) auto;background:var(--surface-raised);border-bottom:1px solid var(--border-cream)}.habit-detail-sheet.app-sheet--detail{width:100%;border-radius:var(--sheet-radius) var(--sheet-radius) 0 0!important}}
 input,select,textarea{background:var(--surface-raised);border-color:var(--border-cream);border-radius:var(--radius-control);box-shadow:var(--highlight-inner)}
 .detail-title textarea{background:transparent;box-shadow:none}
 .sidebar-popover button,.sidebar-action-sheet .app-sheet__body button,.app-sheet--actions .app-sheet__body>button{background:var(--surface-raised)}
@@ -135,7 +135,7 @@ main.list-main{background:#fdfaf3}
 main.list-main>.list-page-context,main.list-main>.list-section-heading,main.list-main>.task-list,main.list-main>.list-page-meta,main.list-main>.pager,main.list-main>.mvp-view{width:min(100%,630px);margin-left:auto;margin-right:auto}
 main.list-main>.mvp-view{gap:0}
 main.list-main>.mvp-view>.habit-section-heading{width:100%}
-main.list-main>.mvp-view>.habit-archive-section{border-top:1px solid #e8e0d5}
+main.list-main>.mvp-view>.habit-archive-section{margin-top:24px;padding-top:12px;border-top:1px solid #e8e0d5}
 .list-page-context{width:min(100%,630px);margin:0 auto 0;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:0 16px}
 .habit-page-context{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:0 16px}
 .habit-section-heading{margin-top:0}

frontend/src/visual-polish.test.ts

@@ -139,7 +139,10 @@ describe('approved five-detail polish', () => {
     expect(css).toContain('.habit-section-heading{margin-top:0}')
     expect(css).toContain('main.list-main>.mvp-view{gap:0}')
     expect(css).toContain('main.list-main>.mvp-view>.habit-section-heading{width:100%}')
-    expect(css).toContain('main.list-main>.mvp-view>.habit-archive-section{border-top:1px solid #e8e0d5}')
+    expect(css).toContain('main.list-main>.mvp-view>.habit-archive-section{margin-top:24px;padding-top:12px;border-top:1px solid #e8e0d5}')
+    expect(css).toContain('.habit-archive-section{display:grid;gap:10px}')
+    expect(css).toContain('.habit-archive-toggle{width:100%;min-height:44px;display:grid;grid-template-columns:28px minmax(0,1fr) 28px;align-items:center;gap:8px;padding:0 4px;border:0;background:transparent;box-shadow:none')
+    expect(css).toContain('.archived-habits{margin-top:2px;')
   })
 
   it('uses one 58px plain-list contract for active task and habit rows', () => {