Give the remaining app pages a more polished layout

[Commanderx-code]

📝 Change

The last page restyle, covering every page not done in #22–#25 in one pass: System Sync, Backup & Restore, Configuration, System Health, Needs attention, Activity, Terminal, Services, System inventory, Workflows, and Change timeline. The change is CSS-only.

These pages share the same building blocks, so one shared block (scoped with :is(#sync-view, #backup-view, …)) styles them all:

• Page header card: each page's heading becomes an accent-tinted card with an accent eyebrow, matching the Settings and Toolbox intros.
• Readable, consistent text: these pages had many unstyled paragraphs, status lines, labels, and summaries at the browser's 16px default next to 11–13px styled text. The page base is now 13px (15px with the Larger text setting). Anything with an explicit size is unchanged.
• Panels: consistent 15px panel titles, an accent border while a panel has focus, and centered empty-state messages.
• Collapsible sections (Backup readiness, backup schedule, Service cleanup, and so on): the same rotating accent chevron as the Toolbox page, replacing the native triangle.
• Inputs: accent focus ring on inputs, selects, and textareas, plus accent-colored checkboxes.
• Empty output boxes (service properties/logs, configuration compare) show as dashed placeholders instead of solid empty bars.

Page-specific fixes:

• Services and Change timeline: the search fields were unstyled native inputs; they now match the other inputs and fill the toolbar.
• Configuration: the "Source configuration" label now matches its sibling panel titles (it was rendered as small bold label text).
• Workflows: the "New workflow" and "Add weekly maintenance example" buttons no longer touch.

✅ Validation

• npm run check
• npm test: 78/78 pass.
• npm run test:rust: not run; there are no Rust changes.
• Checked in the browser preview: before and after screenshots of all 11 pages, in the dark and light themes.

🔎 Review notes

No new dependencies. The preview shows most of these pages in their "desktop app required" state, so they're worth a look in the desktop app with real data.

🤖 Generated with Claude Code

https://claude.ai/code/session_01BUhabxL4SPejg19jgbSyYN

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Generated by Claude Code