Summary

• Use the concise localized character-count label and keep the existing no-spaces count semantics.
• Stack created/modified timestamps beneath their labels and narrow the popover while preserving localized text.
• Remove the parenthetical read-only qualifier from every supported locale so the reading-mode label fits on one line.
• Fix the title-bar counter's hover jitter: the global .el-button:hover rule adds a 1px border, so the transparent border was still changing the button width. The trigger now keeps a zero-width border in all interaction states.
• Remove the opacity transition and use the existing 50% editor color to avoid text compositing changes.

Type of change

• Bug fix (non-breaking, fixes an issue)

Test plan

• pnpm run lint
• pnpm run typecheck
• pnpm -C packages/desktop exec vitest run test/unit/specs/i18n.spec.ts test/unit/specs/document-statistics.spec.ts
• pnpm -C packages/desktop exec playwright test test/e2e/i18n-shell.spec.ts -g 'reading mode uses'
• pnpm -C packages/desktop exec playwright test test/e2e/editor-input.spec.ts -g 'Title-bar word counter'
• Manually tested on macOS: hover/unhover geometry remains fixed; character labels, reading-mode labels, and stacked timestamps render correctly.
• New tests added — no dedicated test added for this UI-only adjustment; existing text and localized layout assertions were updated.

Notes for reviewers

No linked issue was provided for this UI refinement. The hover-jitter root cause is the project-wide Element Plus button hover border, not the text color or popover itself.