Add collapsible input section to keep it out of Ctrl+F results

[Copilot]

When reviewing a rendered patch, the large input textarea kept matching during in-page find (Ctrl+F), competing with the Diff Preview and slowing down search.

Changes

• Collapse toggle (#collapse-btn) added to the input header. Collapsing applies display:none to the textarea, removing it from the DOM render box so Ctrl+F no longer matches its content.
• Persistence of the collapsed state via localStorage (patchReader_inputCollapsed), restored on load.
• Accessibility: button exposes aria-expanded / aria-controls; tooltip switches between collapse/expand via data-i18n-title.
• i18n: added collapseInput / expandInput for en / zh / ja.
• Version bump to 1.0.4 (package.json, package-lock.json, and the Chrome / Edge manifest.json).

All edits live in src/common/, so both Chrome and Edge builds inherit them.

// Collapsing hides the textarea so its content is excluded from Ctrl+F
function setInputCollapsed(collapsed, persist = true) {
  inputSection.classList.toggle('collapsed', collapsed);
  collapseBtn.setAttribute('aria-expanded', collapsed ? 'false' : 'true');
  // ...persist to localStorage
}

.input-section.collapsed #diff-input { display: none; }

[unknowIfGuestInDream]

@copilot
版本到1.0.4

[Copilot]

@copilot
版本到1.0.4

已将版本更新到 1.0.4（package.json、chrome/edge manifest.json 及 package-lock.json）。