feat: add optional mood to thoughts with custom moods support

Mood is an optional label+emoji string (e.g. "relaxed 😌") on thoughts.
Users can define up to 8 custom moods in profile settings.
Mood federates via AP Note JSON and displays on thought cards.

crates/adapters/postgres-search/src/lib.rs

@@ -36,6 +36,7 @@ struct FeedRow {
     thought_created_at: DateTime<Utc>,
     thought_updated_at: Option<DateTime<Utc>>,
     note_extensions: Option<serde_json::Value>,
+    mood: Option<String>,
     #[sqlx(flatten)]
     author: postgres::user::UserRow,
     like_count: i64,
@@ -58,9 +59,9 @@ fn feed_select(viewer: Option<uuid::Uuid>) -> String {
          t.id AS thought_id, t.user_id AS t_user_id, t.content,\n\
          t.in_reply_to_id,\n\
          t.visibility, t.content_warning, t.sensitive, t.local AS t_local,\n\
-         t.created_at AS thought_created_at, t.updated_at AS thought_updated_at, t.note_extensions,\n\
+         t.created_at AS thought_created_at, t.updated_at AS thought_updated_at, t.note_extensions, t.mood,\n\
          u.id, u.username, u.email, u.password_hash,\n\
-         u.display_name, u.bio, u.avatar_url, u.header_url, u.custom_css, u.profile_fields,\n\
+         u.display_name, u.bio, u.avatar_url, u.header_url, u.custom_css, u.profile_fields, u.custom_moods,\n\
          u.local,\n\
          u.created_at, u.updated_at,\n\
          (SELECT COUNT(*) FROM likes  l WHERE l.thought_id=t.id) AS like_count,\n\
@@ -84,6 +85,7 @@ fn row_to_entry(r: FeedRow, viewer: Option<uuid::Uuid>) -> Result<FeedEntry, Dom
         created_at: r.thought_created_at,
         updated_at: r.thought_updated_at,
         note_extensions: r.note_extensions,
+        mood: r.mood,
     };
     let author = User::from(r.author);
     Ok(FeedEntry {

crates/adapters/postgres-search/src/tests.rs

@@ -27,6 +27,7 @@ async fn seed_thought(pool: &sqlx::PgPool, username: &str, content: &str) -> (Us
         visibility: Visibility::Public,
         content_warning: None,
         sensitive: false,
+        mood: None,
     });
     trepo.save(&t).await.unwrap();
     (u, t)