feat(compose): tap-to-select-all workspace + flat channel chips

- Workspace header is now a TouchableOpacity: tap selects all its
  channels, re-tap deselects all (partial state shows minus-square icon)
- Removed sub-grouping by network type — channels are displayed as a
  flat chip row directly under each workspace card
- Removed unused networkLabel helper

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

artifacts/postiz-mobile/app/(tabs)/compose.tsx

@@ -56,22 +56,6 @@ type MediaItem =
   | { type: "local"; uri: string }
   | { type: "uploaded"; id: string; path: string; workspaceId: string };
 
-// Maps a type string to a display label, used for grouping within a workspace
-function networkLabel(intg: PostizIntegration): string {
-  const t = (intg.type ?? intg.internalType ?? "").toLowerCase();
-  if (t.includes("twitter") || t.includes("x-") || t === "x") return "X / Twitter";
-  if (t.includes("instagram")) return "Instagram";
-  if (t.includes("linkedin")) return "LinkedIn";
-  if (t.includes("facebook")) return "Facebook";
-  if (t.includes("tiktok")) return "TikTok";
-  if (t.includes("youtube")) return "YouTube";
-  if (t.includes("pinterest")) return "Pinterest";
-  if (t.includes("mastodon")) return "Mastodon";
-  if (t.includes("bluesky") || t.includes("bsky")) return "Bluesky";
-  if (t.includes("threads")) return "Threads";
-  if (t.includes("reddit")) return "Reddit";
-  return "Other";
-}
 
 function resolveMediaUrl(path: string, baseUrl: string): string {
   if (path.startsWith("http://") || path.startsWith("https://")) return path;
@@ -156,7 +140,7 @@ export default function ComposeScreen() {
       staleTime: 60000,
     });
 
-  // Group: workspace → network label → integrations
+  // Group: workspace → flat list of integrations
   const grouped = useMemo(() => {
     if (!allIntegrations) return [];
     const byWorkspace = new Map<string, IntegrationWithWorkspace[]>();
@@ -166,21 +150,20 @@ export default function ComposeScreen() {
     }
     return workspaces
       .filter((ws) => byWorkspace.has(ws.id))
-      .map((ws) => {
-        const intgs = byWorkspace.get(ws.id)!;
-        const byNetwork = new Map<string, IntegrationWithWorkspace[]>();
-        for (const intg of intgs) {
-          const key = networkLabel(intg);
-          if (!byNetwork.has(key)) byNetwork.set(key, []);
-          byNetwork.get(key)!.push(intg);
-        }
-        return {
-          workspace: ws,
-          networks: Array.from(byNetwork.entries()).map(([label, channels]) => ({ label, channels })),
-        };
-      });
+      .map((ws) => ({ workspace: ws, channels: byWorkspace.get(ws.id)! }));
   }, [allIntegrations, workspaces]);
 
+  const toggleWorkspace = (wsId: string) => {
+    const wsChannels = grouped.find((g) => g.workspace.id === wsId)?.channels ?? [];
+    const allIds = wsChannels.map((c) => c.id);
+    const allSelected = allIds.every((id) => selectedChannels.includes(id));
+    if (allSelected) {
+      setSelectedChannels((prev) => prev.filter((id) => !allIds.includes(id)));
+    } else {
+      setSelectedChannels((prev) => [...new Set([...prev, ...allIds])]);
+    }
+  };
+
   const effectiveCharLimit = useMemo(() => {
     if (selectedChannels.length === 0 || !allIntegrations) return 3000;
     const selected = allIntegrations.filter((i) => selectedChannels.includes(i.id));
@@ -552,50 +535,51 @@ export default function ComposeScreen() {
           </Text>
         ) : (
           <View style={styles.channelGroups}>
-            {grouped.map(({ workspace, networks }, wsIdx) => (
-              <View
-                key={workspace.id}
-                style={[
-                  styles.workspaceSection,
-                  {
-                    backgroundColor: colors.card,
-                    borderColor: colors.border,
-                  },
-                  wsIdx > 0 && { marginTop: 8 },
-                ]}
-              >
-                {/* Workspace header */}
-                <View style={[styles.workspaceHeader, { borderBottomColor: colors.border }]}>
-                  <Feather name="briefcase" size={12} color={colors.primary} />
-                  <Text style={[styles.workspaceName, { color: colors.primary }]}>
-                    {workspace.name}
-                  </Text>
-                </View>
+            {grouped.map(({ workspace, channels }, wsIdx) => {
+              const allIds = channels.map((c) => c.id);
+              const selectedCount = allIds.filter((id) => selectedChannels.includes(id)).length;
+              const allSelected = selectedCount === allIds.length;
+              const someSelected = selectedCount > 0 && !allSelected;
+              return (
+                <View
+                  key={workspace.id}
+                  style={[
+                    styles.workspaceSection,
+                    { backgroundColor: colors.card, borderColor: colors.border },
+                    wsIdx > 0 && { marginTop: 8 },
+                  ]}
+                >
+                  {/* Workspace header — tap to select/deselect all */}
+                  <TouchableOpacity
+                    activeOpacity={0.7}
+                    onPress={() => toggleWorkspace(workspace.id)}
+                    style={[styles.workspaceHeader, { borderBottomColor: colors.border }]}
+                  >
+                    <Feather name="briefcase" size={12} color={colors.primary} />
+                    <Text style={[styles.workspaceName, { color: colors.primary, flex: 1 }]}>
+                      {workspace.name}
+                    </Text>
+                    <Feather
+                      name={allSelected ? "check-square" : someSelected ? "minus-square" : "square"}
+                      size={14}
+                      color={allSelected || someSelected ? colors.primary : colors.mutedForeground}
+                    />
+                  </TouchableOpacity>
 
-                {/* Network groups */}
-                <View style={styles.networkGroups}>
-                  {networks.map(({ label, channels }) => (
-                    <View key={label} style={styles.networkGroup}>
-                      {networks.length > 1 && (
-                        <Text style={[styles.networkLabel, { color: colors.mutedForeground }]}>
-                          {label}
-                        </Text>
-                      )}
-                      <View style={styles.chipRow}>
-                        {channels.map((intg) => (
-                          <ChannelChip
-                            key={intg.id}
-                            integration={intg}
-                            selected={selectedChannels.includes(intg.id)}
-                            onToggle={() => toggleChannel(intg.id)}
-                          />
-                        ))}
-                      </View>
-                    </View>
-                  ))}
+                  {/* Flat channel chips */}
+                  <View style={styles.chipRow}>
+                    {channels.map((intg) => (
+                      <ChannelChip
+                        key={intg.id}
+                        integration={intg}
+                        selected={selectedChannels.includes(intg.id)}
+                        onToggle={() => toggleChannel(intg.id)}
+                      />
+                    ))}
+                  </View>
                 </View>
-              </View>
-            ))}
+              );
+            })}
           </View>
         )}
 
@@ -777,10 +761,7 @@ const styles = StyleSheet.create({
     borderBottomWidth: StyleSheet.hairlineWidth,
   },
   workspaceName: { fontSize: 11, fontFamily: "Inter_600SemiBold", letterSpacing: 0.5 },
-  networkGroups: { padding: 10, gap: 10 },
-  networkGroup: { gap: 4 },
-  networkLabel: { fontSize: 10, fontFamily: "Inter_500Medium", letterSpacing: 0.4, marginLeft: 2 },
-  chipRow: { flexDirection: "row", flexWrap: "wrap", gap: 6 },
+  chipRow: { flexDirection: "row", flexWrap: "wrap", gap: 6, padding: 10 },
   scheduleRow: {
     flexDirection: "row", alignItems: "center", justifyContent: "space-between",
     paddingHorizontal: 16, paddingVertical: 12, borderRadius: 12, borderWidth: 1,