Wochen-Rückblick: sonntags 20:00 automatisch in den Devlog-Kanal

- Scheduler (5-Minuten-Check, dedupe über last_weekly_recap-Setting)
- Embed: Commits pro Tag als Balken-Grafik, Commit-/Devlog-Zahlen, Top-Projekte
- Setting weekly_recap_enabled + 'Rückblick jetzt testen'-Button auf der Setup-Seite
- TZ Europe/Berlin im Compose (Scheduler + Datumsformate)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/web/api.js

@@ -138,6 +138,7 @@ ${rssItems}
             commit_feed_enabled: getSetting('commit_feed_enabled') !== '0',
             commit_branch_filter: getSetting('commit_branch_filter') ?? '',
             ignored_repos: getSetting('ignored_repos') ?? '',
+            weekly_recap_enabled: getSetting('weekly_recap_enabled') !== '0',
         };
     }
 
@@ -193,6 +194,9 @@ ${rssItems}
         if (body.commit_feed_enabled !== undefined) {
             setSetting('commit_feed_enabled', body.commit_feed_enabled ? '1' : '0');
         }
+        if (body.weekly_recap_enabled !== undefined) {
+            setSetting('weekly_recap_enabled', body.weekly_recap_enabled ? '1' : '0');
+        }
         for (const key of ['commit_branch_filter', 'ignored_repos']) {
             if (body[key] !== undefined) {
                 setSetting(key, String(body[key]).trim());
@@ -208,6 +212,18 @@ ${rssItems}
         if (requireAdmin(request, reply)) return;
 
         const target = request.params.target;
+
+        // Sonderfall: echten Wochen-Rückblick sofort posten
+        if (target === 'recap') {
+            try {
+                const { postWeeklyRecap } = await import('../bot/weekly-recap.js');
+                await postWeeklyRecap(client);
+                return { ok: true };
+            } catch (error) {
+                request.log.error({ err: error }, 'Wochen-Rückblick-Test fehlgeschlagen');
+                return reply.code(502).send({ error: 'Senden fehlgeschlagen' });
+            }
+        }
         const channelId =
             target === 'commit' ? commitChannelId()
             : target === 'devlog' ? devlogChannelId()