chore(release): 1.5.1

[vannt-dev]

Cuts 1.5.1 from the work in #10, #11, #12, #13 and #14.

pubspec.yaml moves to 1.5.1+8, and the Unreleased notes become a ## [1.5.1] section.

What lands

The Facebook gallery, which started this. An album shared from Facebook's own Share action returned the cover photo alone. Facebook serves an anonymous request no gallery at all, so the whole set comes from the fallback service — and the step that reaches it reached only post permalinks, which a share link never redirects to. Group post permalinks had the same gap.

Two things came out of investigating that, and matter more than the fix itself:

• A short gallery now says why — external services turned off, or a service that did not answer — instead of looking identical to a post that genuinely holds one photo. That ambiguity is why the original bug read as a broken parser and went unnoticed.
• Comment stickers stop being counted among a post's photos. Found by opening the picker on a device: the count looked plausible and the URLs were unremarkable, and only the thumbnails gave it away.

Three viewer changes, each from using the app rather than reading it: a shared link brings the home tab forward instead of being analysed behind whatever tab was open; the recent links section folds away and gained a copy button; and both viewers are swiped through rather than closed and reopened for each item.

Why a patch release

Everything here fixes or refines existing behaviour. Nothing changes an interface anything else depends on — GalleryNotice is additive and deliberately absent from VideoMetadata.toJson, and VideoPlayerScreen behaves exactly as before when given no playlist.

Release gates, checked locally

These are gated on main and never run on a pull request, so a green PR proves nothing about the release path. All three were run here before pushing:

• the changelog has a non-empty [1.5.1] section under the workflow's exact awk — ok
• no v1.5.1 tag exists yet — ok
• 1.5.1 sorts above 1.5.0 — ok

tool/check_all.ps1 -SkipAndroid -SkipWebBuild: all checks passed. Analysis clean, 217 Flutter tests, Node 7/7.

🤖 Generated with Claude Code

https://claude.ai/code/session_01WJRusxnQjWpwKLgg398Kv6