docs: correct auto-update platform support (7.1)

[DeepDiver1975]

Summary

The Automatic Updater page documents auto-update as Windows-only, but that is inaccurate for client 7.1:

• macOS uses Sparkle and downloads/installs updates in-app (src/gui/updater/sparkleupdater_mac.mm).
• Linux AppImage builds use an in-app downloader/installer (src/gui/updater/appimageupdater.cpp).
• Only Linux distribution packages (.deb/.rpm) are notify-only (PassiveUpdateNotifier in ocupdater.cpp).

This PR rewrites the Introduction, macOS, and Linux sections accordingly, and clarifies the Windows flow as a silent download followed by a user-confirmed Restart required prompt (WindowsUpdater / UpdateDownloadedWidget).

Source of truth

owncloud/client @ 7.1: src/gui/updater/{updater,appimageupdater,ocupdater}.cpp, sparkleupdater_mac.mm.

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[DeepDiver1975]

Review — docs: correct auto-update platform support (7.1)

Verdict: clean (approve-quality). Accurate, AsciiDoc-clean, CI green. 7.1 backport, diff identical to master #754.

Accuracy — verified against owncloud/client @ 7.1

I cross-checked the platform claims against src/gui/updater/updater.cpp (Updater::create) on the 7.1 branch, which selects the backend exactly as the docs now describe:

• macOS (Q_OS_MAC + Sparkle) → SparkleUpdater — in-app download/install. ✅
• Windows → WindowsUpdater — silent background download, then the UpdateDownloadedWidget Restart now / later dialog → applyUpdateAndRestart(), with a manual-download fallback on failure. ✅
• Linux AppImage (Utility::runningInAppImage()) → AppImageUpdater — in-app download/install + restart prompt. ✅
• Linux distro package (fallthrough) → PassiveUpdateNotifier — notify-only. ✅

The old "Windows-only" statement was wrong; the new text correctly splits the Linux AppImage (in-app) vs distro-package (notify-only) paths. No factual inaccuracies in the platform claims.

Other checks

• AsciiDoc: clean — reuses {description} / {ini_name}, backticked code, *bold*; lint check passes. mergeStateStatus is CLEAN.
• Master consistency: diff is identical to docs: correct auto-update platform support #754.
• Changelog: repo maintains none → n/a.

Auto-merge: N/A — agent-authored PR (self-approval blocked), so this is a review comment, not an approval.

🤖 Automated PR review by Claude Code review agent.

[dj4oC]

7.1 counterpart of #754 — same Automatic Updater platform-support rewrite.

Findings

Diff matches the master PR (#754) in substance. Not independently re-verified against owncloud/client source (out of scope here).

Verdict

Approved

🤖 Automated review by Claude Code

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