feat(eventsnap): UX review batch-3 — feed virtualization, a11y/UX fixes, shared primitives
Frontend - Feed: DOM-windowing via @tanstack/svelte-virtual (new VirtualFeed). The window virtualizer keeps the sticky header, pull-to-refresh, infinite-scroll sentinel and bottom nav working. List = dynamic measured heights keyed by upload id + anchorTo:start so an SSE prepend doesn't jump a scrolled reader; grid = measured square rows. Drops the content-visibility band-aid and the old FeedGrid. measureElement(null) on row unmount prevents ResizeObserver retention; stable option callbacks + guarded setOptions avoid O(n) re-measure on like/comment patches. - Global: viewport-fit=cover (activates safe-area insets), lang=de, PWA manifest + maskable icon + apple-touch metas, prefers-reduced-motion, safe-area-top headers. - Feed reactivity: like/comment SSE patch the single card in place; upload-processed debounced in-place merge; IntersectionObserver leak fixed; shared 60s clock. - CLS: list cards reserve the skeleton aspect box. - Destructive actions (promote/demote/unban, gallery release) routed through ConfirmSheet (host + admin). - Export OOM: streamed download via single-use ticket instead of res.blob(). - Shared primitives: IconButton (44px hit area), scrollLock action; UploadSheet a11y. - Polish: api timeout + non-JSON guard, focus-trap offsetParent fix, pull-to-refresh passive:false + guards, diashow keyboard a11y, Toaster assertive errors, dark-mode gaps, aria-pressed on like/chip state, CameraCapture mic-on-video + retry, ConfirmSheet spinner, upload beforeunload warning, emoji->SVG icons. Backend - social.rs: like/comment SSE broadcasts now carry the fresh count so feed clients patch one card in place instead of refetching page 1. - admin.rs / main.rs: supporting changes for the above. Verified: svelte-check 0 errors, frontend build clean, /feed SSR 200. Runtime feed scroll-feel validation still owed (documented in FOLLOWUPS.md). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
fabi
@@ -98,6 +98,14 @@
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overlayHideTimer = setTimeout(() => (showOverlay = false), 4000);
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}
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// Manual toggle from the always-visible control button — stays open (no
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// auto-hide) so keyboard users can tab through the controls without them
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// vanishing mid-interaction.
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function toggleOverlay() {
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if (overlayHideTimer) clearTimeout(overlayHideTimer);
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showOverlay = !showOverlay;
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}
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function togglePause() {
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paused = !paused;
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if (paused) {
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@@ -166,19 +174,52 @@
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<div class="text-white/60">Lade…</div>
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{/if}
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<!-- Always-visible controls: keyboard-reachable, so the show is never a trap and
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the controls are reachable without a pointer. Honours the notch. -->
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<div
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class="absolute right-0 top-0 z-10 flex gap-2 p-3"
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style="padding-top: calc(env(safe-area-inset-top) + 0.75rem)"
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>
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<button
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type="button"
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onclick={(e) => { e.stopPropagation(); toggleOverlay(); }}
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aria-label="Steuerung anzeigen"
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aria-expanded={showOverlay}
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class="inline-flex h-11 w-11 items-center justify-center rounded-full bg-white/10 text-white hover:bg-white/20"
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>
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<svg class="h-5 w-5" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="1.8">
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<path stroke-linecap="round" stroke-linejoin="round" d="M10.5 6h9.75M10.5 6a1.5 1.5 0 1 1-3 0m3 0a1.5 1.5 0 1 0-3 0M3.75 6H7.5m3 12h9.75m-9.75 0a1.5 1.5 0 0 1-3 0m3 0a1.5 1.5 0 0 0-3 0m-3.75 0H7.5m9-6h3.75m-3.75 0a1.5 1.5 0 0 1-3 0m3 0a1.5 1.5 0 0 0-3 0m-9.75 0h9.75" />
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</svg>
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</button>
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<button
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type="button"
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onclick={(e) => { e.stopPropagation(); exit(); }}
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aria-label="Diashow beenden"
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class="inline-flex h-11 w-11 items-center justify-center rounded-full bg-white/10 text-white hover:bg-white/20"
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>
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<svg class="h-5 w-5" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2">
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<path stroke-linecap="round" stroke-linejoin="round" d="M6 18 18 6M6 6l12 12" />
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</svg>
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</button>
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</div>
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{#if showOverlay}
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<!-- svelte-ignore a11y_click_events_have_key_events a11y_no_static_element_interactions -->
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<div
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class="absolute inset-x-0 bottom-0 flex flex-col gap-3 bg-gradient-to-t from-black/90 via-black/60 to-transparent p-6 pb-10"
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onclick={(e) => e.stopPropagation()}
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>
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<div class="flex flex-wrap items-center gap-2">
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<button
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type="button"
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onclick={togglePause}
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class="rounded-full bg-white/10 px-4 py-2 text-sm font-medium hover:bg-white/20"
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class="inline-flex items-center gap-1.5 rounded-full bg-white/10 px-4 py-2 text-sm font-medium hover:bg-white/20"
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>
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{paused ? '▶ Fortsetzen' : '⏸ Pause'}
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{#if paused}
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<svg class="h-4 w-4" fill="currentColor" viewBox="0 0 24 24"><path d="M8 5v14l11-7z" /></svg>
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Fortsetzen
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{:else}
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<svg class="h-4 w-4" fill="currentColor" viewBox="0 0 24 24"><path d="M6 5h4v14H6zM14 5h4v14h-4z" /></svg>
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Pause
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{/if}
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</button>
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<label class="flex items-center gap-2 rounded-full bg-white/10 px-3 py-2 text-sm">
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@@ -206,9 +247,10 @@
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<button
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type="button"
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onclick={exit}
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class="ml-auto rounded-full bg-white/10 px-4 py-2 text-sm font-medium hover:bg-white/20"
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class="ml-auto inline-flex items-center gap-1.5 rounded-full bg-white/10 px-4 py-2 text-sm font-medium hover:bg-white/20"
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>
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✕ Beenden
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<svg class="h-4 w-4" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2"><path stroke-linecap="round" stroke-linejoin="round" d="M6 18 18 6M6 6l12 12" /></svg>
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Beenden
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</button>
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</div>
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