Merge branch 'claude/nostalgic-wright-acfc25': inline offer photos

Market offers carry a small base64 data-URI thumbnail embedded in the Nostr
event (no media server); full photo stays in the encrypted inventory. Blossom
alternative parked on branch parked/offer-photos-blossom.

# Conflicts:
#	apps/app_seeds/lib/i18n/strings.g.dart

apps/app_seeds/lib/ui/market_offer_detail_screen.dart

@@ -123,6 +123,10 @@ class _MarketOfferDetailScreenState extends State<MarketOfferDetailScreen> {
       body: ListView(
         padding: const EdgeInsets.all(16),
         children: [
+          if (o.imageUrl != null) ...[
+            OfferHeroImage(url: o.imageUrl!, semanticLabel: t.market.photo),
+            const SizedBox(height: 16),
+          ],
           Row(
             children: [
               Expanded(

apps/app_seeds/lib/ui/market_screen.dart

@@ -58,7 +58,11 @@ class _MarketScreenState extends State<MarketScreen> {
     final repo =
         widget.outbox != null ? context.read<VarietyRepository>() : null;
     setState(() => _loading = true);
-    final cubit = await createOffersCubit(widget.social, widget.settings);
+    final cubit = await createOffersCubit(
+      widget.social,
+      widget.settings,
+      repository: repo,
+    );
     final area = await widget.settings.areaGeohash();
     if (!mounted) {
       await cubit.close();
@@ -380,6 +384,13 @@ class _OfferCard extends StatelessWidget {
             children: [
               Row(
                 children: [
+                  if (offer.imageUrl != null) ...[
+                    OfferThumbnail(
+                      url: offer.imageUrl!,
+                      semanticLabel: t.market.photo,
+                    ),
+                    const SizedBox(width: 12),
+                  ],
                   Expanded(
                     child: Text(
                       offer.summary,

apps/app_seeds/lib/ui/market_widgets.dart

@@ -2,6 +2,7 @@ import 'package:commons_core/commons_core.dart';
 import 'package:flutter/material.dart';
 
 import '../i18n/strings.g.dart';
+import '../services/offer_thumbnail.dart';
 import 'theme.dart';
 
 /// Human words for an offer's reciprocity mode. Shared by the market list and
@@ -14,6 +15,122 @@ String offerTypeLabel(Translations t, OfferType type) => switch (type) {
       OfferType.lend => t.share.exchange,
     };
 
+/// A small square thumbnail of an offer's photo for the market list card.
+/// The image usually rides inline in the offer as a `data:` URI (decentralized,
+/// no server), so it renders straight from memory; an `http(s)` URL is still
+/// supported for interop and degrades gracefully (spinner, then placeholder).
+class OfferThumbnail extends StatelessWidget {
+  const OfferThumbnail({
+    required this.url,
+    required this.semanticLabel,
+    this.size = 56,
+    super.key,
+  });
+
+  final String url;
+  final String semanticLabel;
+  final double size;
+
+  @override
+  Widget build(BuildContext context) {
+    return ClipRRect(
+      borderRadius: BorderRadius.circular(10),
+      child: _offerImage(
+        url,
+        semanticLabel: semanticLabel,
+        width: size,
+        height: size,
+      ),
+    );
+  }
+}
+
+/// Full-width "hero" image atop the offer detail page. Same source handling as
+/// [OfferThumbnail]; hidden entirely when the offer has no photo.
+class OfferHeroImage extends StatelessWidget {
+  const OfferHeroImage({
+    required this.url,
+    required this.semanticLabel,
+    super.key,
+  });
+
+  final String url;
+  final String semanticLabel;
+
+  @override
+  Widget build(BuildContext context) {
+    return ClipRRect(
+      borderRadius: BorderRadius.circular(14),
+      child: AspectRatio(
+        aspectRatio: 4 / 3,
+        child: _offerImage(url, semanticLabel: semanticLabel),
+      ),
+    );
+  }
+}
+
+/// Renders an offer image from either an inline `data:` URI (via memory) or a
+/// remote URL (via network), always cropping to fill and falling back to a
+/// neutral placeholder — a broken image must never block the card.
+Widget _offerImage(
+  String url, {
+  required String semanticLabel,
+  double? width,
+  double? height,
+}) {
+  final inline = decodeDataUri(url);
+  if (inline != null) {
+    return Image.memory(
+      inline,
+      width: width,
+      height: height,
+      fit: BoxFit.cover,
+      semanticLabel: semanticLabel,
+      errorBuilder: (context, _, _) =>
+          _OfferImagePlaceholder(width: width, height: height),
+    );
+  }
+  return Image.network(
+    url,
+    width: width,
+    height: height,
+    fit: BoxFit.cover,
+    semanticLabel: semanticLabel,
+    loadingBuilder: (context, child, progress) => progress == null
+        ? child
+        : _OfferImagePlaceholder(width: width, height: height, loading: true),
+    errorBuilder: (context, _, _) =>
+        _OfferImagePlaceholder(width: width, height: height),
+  );
+}
+
+/// Neutral fill shown while a remote offer image loads or when it can't be
+/// decoded/fetched — a marketplace is useless if a broken image blocks the card.
+class _OfferImagePlaceholder extends StatelessWidget {
+  const _OfferImagePlaceholder({this.width, this.height, this.loading = false});
+
+  final double? width;
+  final double? height;
+  final bool loading;
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      width: width,
+      height: height,
+      color: seedPrimaryContainer.withValues(alpha: 0.4),
+      alignment: Alignment.center,
+      child: loading
+          ? const SizedBox(
+              width: 20,
+              height: 20,
+              child: CircularProgressIndicator(strokeWidth: 2),
+            )
+          : const Icon(Icons.image_not_supported_outlined, color: seedMuted),
+    );
+  }
+}
+
 /// The small pill showing an offer's reciprocity mode (give/swap/sell/wanted).
 class OfferTypeChip extends StatelessWidget {
   const OfferTypeChip({required this.label, super.key});