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/presentation/src/handlers/auth.rs

@@ -32,6 +32,14 @@ pub fn to_user_response(u: &domain::models::user::User) -> UserResponse {
                 value: v.clone(),
             })
             .collect(),
+        custom_moods: u
+            .custom_moods
+            .iter()
+            .map(|(n, v)| ProfileField {
+                name: n.clone(),
+                value: v.clone(),
+            })
+            .collect(),
         local: u.local,
         is_followed_by_viewer: false,
         created_at: u.created_at,
@@ -48,6 +56,7 @@ pub fn to_summary_response(u: &UserSummary) -> UserResponse {
         header_url: None,
         custom_css: None,
         profile_fields: vec![],
+        custom_moods: vec![],
         local: true,
         is_followed_by_viewer: false,
         created_at: chrono::Utc::now(),

crates/presentation/src/handlers/feed.rs

@@ -109,6 +109,7 @@ pub fn to_thought_response(e: &domain::models::feed::FeedEntry) -> ThoughtRespon
         created_at: e.thought.created_at,
         updated_at: e.thought.updated_at,
         note_extensions: e.thought.note_extensions.clone(),
+        mood: e.thought.mood.clone(),
     }
 }
 

crates/presentation/src/handlers/thoughts.rs

@@ -61,6 +61,7 @@ pub async fn post_thought(
             visibility: body.visibility,
             content_warning: body.content_warning,
             sensitive: body.sensitive.unwrap_or(false),
+            mood: body.mood,
         },
     )
     .await?;

crates/presentation/src/handlers/users/mod.rs

@@ -117,6 +117,9 @@ pub async fn patch_profile(
             profile_fields: body
                 .profile_fields
                 .map(|f| f.into_iter().map(|pf| (pf.name, pf.value)).collect()),
+            custom_moods: body
+                .custom_moods
+                .map(|f| f.into_iter().map(|pf| (pf.name, pf.value)).collect()),
         },
     )
     .await?;