fix(feed): card spacing, action-row distribution, tab strip, detail inset

- PostCard rows got cramped paddings and a near-invisible divider.
  Increased paddingTop 12→16, paddingBottom 12→18, paddingHorizontal
  14→16; divider colour #141414→#222222 so the seam between posts is
  legible on OLED blacks.
- Action row (chat / ❤ / view / share) used a fixed gap:32 + spacer.
  Reworked to four flex:1 cells with justifyContent: space-between,
  so the first three icons distribute evenly across the row and share
  pins to the right edge. Matches Twitter's layout where each action
  occupies a quarter of the row regardless of label width.
- Feed tab strip (Подписки / Для вас / В тренде) used flex:1 +
  gap:10 which bunched the three labels together visually. Switched
  to justifyContent: space-between + paddingHorizontal:20 so each
  tab hugs its label and the three labels spread to the edges with
  full horizontal breathing room.
- Post detail screen (/feed/[id]) and hashtag feed (/feed/tag/[tag])
  were missing the safe-area top inset — their headers butted right
  against the status bar / notch. Added useSafeAreaInsets().top as
  paddingTop on the outer View, matching the rest of the app.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

client-app/app/(app)/feed/[id].tsx

@@ -21,6 +21,7 @@ import {
 } from 'react-native';
 import { Ionicons } from '@expo/vector-icons';
 import { router, useLocalSearchParams } from 'expo-router';
+import { useSafeAreaInsets } from 'react-native-safe-area-context';
 
 import { Header } from '@/components/Header';
 import { IconButton } from '@/components/IconButton';
@@ -32,6 +33,7 @@ import {
 } from '@/lib/feed';
 
 export default function PostDetailScreen() {
+  const insets = useSafeAreaInsets();
   const { id: postID } = useLocalSearchParams<{ id: string }>();
   const keyFile = useStore(s => s.keyFile);
 
@@ -73,7 +75,7 @@ export default function PostDetailScreen() {
   }, []);
 
   return (
-    <View style={{ flex: 1, backgroundColor: '#000000' }}>
+    <View style={{ flex: 1, backgroundColor: '#000000', paddingTop: insets.top }}>
       <Header
         divider
         left={<IconButton icon="chevron-back" size={36} onPress={() => router.back()} />}

client-app/app/(app)/feed/index.tsx

@@ -158,17 +158,18 @@ export default function FeedScreen() {
     <View style={{ flex: 1, backgroundColor: '#000000', paddingTop: insets.top }}>
       <TabHeader title="Лента" />
 
-      {/* Tab strip — больше воздуха между табами. Горизонтальный padding
+      {/* Tab strip — три таба, равномерно распределены по ширине
-          на контейнере + gap между Pressable'ами делает табы "breathable",
+          (justifyContent: space-between). Каждый Pressable hug'ает
-          индикатор активной вкладки — тонкая полоска только под текстом,
+          свой контент — табы НЕ тянутся на 1/3 ширины, а жмутся к
-          шириной примерно с лейбл. */}
+          своему лейблу, что даёт воздух между ними. Индикатор активной
+          вкладки — тонкая полоска под лейблом. */}
       <View
         style={{
           flexDirection: 'row',
-          paddingHorizontal: 12,
+          justifyContent: 'space-between',
-          gap: 10,
+          paddingHorizontal: 20,
           borderBottomWidth: 1,
-          borderBottomColor: '#141414',
+          borderBottomColor: '#1f1f1f',
         }}
       >
         {(Object.keys(TAB_LABELS) as TabKey[]).map(key => (
@@ -176,33 +177,31 @@ export default function FeedScreen() {
             key={key}
             onPress={() => setTab(key)}
             style={({ pressed }) => ({
-              flex: 1,
               alignItems: 'center',
               paddingVertical: 16,
-              backgroundColor: pressed ? '#0a0a0a' : 'transparent',
+              paddingHorizontal: 6,
+              opacity: pressed ? 0.6 : 1,
             })}
           >
             <Text
               style={{
                 color: tab === key ? '#ffffff' : '#6a6a6a',
                 fontWeight: tab === key ? '700' : '500',
-                fontSize: 14,
+                fontSize: 15,
                 letterSpacing: -0.1,
               }}
             >
               {TAB_LABELS[key]}
             </Text>
-            {tab === key && (
             <View
               style={{
                 marginTop: 10,
-                  width: 32,
+                width: tab === key ? 28 : 0,
                 height: 3,
                 borderRadius: 1.5,
                 backgroundColor: '#1d9bf0',
               }}
             />
-            )}
           </Pressable>
         ))}
       </View>

client-app/app/(app)/feed/tag/[tag].tsx

@@ -10,6 +10,7 @@ import {
 } from 'react-native';
 import { Ionicons } from '@expo/vector-icons';
 import { router, useLocalSearchParams } from 'expo-router';
+import { useSafeAreaInsets } from 'react-native-safe-area-context';
 
 import { Header } from '@/components/Header';
 import { IconButton } from '@/components/IconButton';
@@ -18,6 +19,7 @@ import { useStore } from '@/lib/store';
 import { fetchHashtag, fetchStats, type FeedPostItem } from '@/lib/feed';
 
 export default function HashtagScreen() {
+  const insets = useSafeAreaInsets();
   const { tag: rawTag } = useLocalSearchParams<{ tag: string }>();
   const tag = (rawTag ?? '').replace(/^#/, '').toLowerCase();
   const keyFile = useStore(s => s.keyFile);
@@ -75,7 +77,7 @@ export default function HashtagScreen() {
   }, [keyFile]);
 
   return (
-    <View style={{ flex: 1, backgroundColor: '#000000' }}>
+    <View style={{ flex: 1, backgroundColor: '#000000', paddingTop: insets.top }}>
       <Header
         divider
         left={<IconButton icon="chevron-back" size={36} onPress={() => router.back()} />}

client-app/components/feed/PostCard.tsx

@@ -173,11 +173,12 @@ function PostCardInner({ post, likedByMe, onStatsChanged, onDeleted, compact }:
       onLongPress={onLongPress}
       style={({ pressed }) => ({
         flexDirection: 'row',
-        paddingHorizontal: 14,
+        paddingHorizontal: 16,
-        paddingVertical: compact ? 10 : 12,
+        paddingTop: compact ? 12 : 16,
+        paddingBottom: compact ? 14 : 18,
         backgroundColor: pressed ? '#080808' : 'transparent',
         borderBottomWidth: 1,
-        borderBottomColor: '#141414',
+        borderBottomColor: '#222222',
       })}
     >
       {/* Avatar column */}
@@ -246,20 +247,27 @@ function PostCardInner({ post, likedByMe, onStatsChanged, onDeleted, compact }:
           </View>
         )}
 
-        {/* Action row */}
+        {/* Action row — 4 evenly-spaced buttons (Twitter-style). Each is
+            wrapped in a flex: 1 container so even if one label is
+            wider than another, visual spacing between centres stays
+            balanced. */}
         <View
           style={{
             flexDirection: 'row',
             alignItems: 'center',
-            marginTop: 8,
+            justifyContent: 'space-between',
-            gap: 32,
+            marginTop: 12,
+            paddingRight: 4,
           }}
         >
+          <View style={{ flex: 1, alignItems: 'flex-start' }}>
             <ActionButton
               icon="chatbubble-outline"
               label={formatCount(0) /* replies count — not implemented yet */}
               onPress={onOpenDetail}
             />
+          </View>
+          <View style={{ flex: 1, alignItems: 'flex-start' }}>
             <Pressable
               onPress={onToggleLike}
               disabled={busy}
@@ -286,11 +294,14 @@ function PostCardInner({ post, likedByMe, onStatsChanged, onDeleted, compact }:
                 {formatCount(localLikeCount)}
               </Text>
             </Pressable>
+          </View>
+          <View style={{ flex: 1, alignItems: 'flex-start' }}>
             <ActionButton
               icon="eye-outline"
               label={formatCount(post.views)}
             />
-          <View style={{ flex: 1 }} />
+          </View>
+          <View style={{ alignItems: 'flex-end' }}>
             <ActionButton
               icon="share-outline"
               onPress={() => {
@@ -300,6 +311,7 @@ function PostCardInner({ post, likedByMe, onStatsChanged, onDeleted, compact }:
             />
           </View>
         </View>
+      </View>
     </Pressable>
   );
 }