refactor(ui,core): remove default props for config values

- Remove serde default for max_title_size, use Default impl like max_message_size
- Remove #[props(default)] from max_title_size and max_message_size in
  PostInput and MessageEditForm - these must be passed from configuration
- Update all MessageCard call sites to pass config values
- Add max_title_size and max_message_size props to MessageCard

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: mkg20001

common/src/board_state/configuration.rs

@@ -213,7 +213,6 @@ pub struct Configuration {
     pub max_recent_messages: usize,
     pub max_user_bans: usize,
     pub max_message_size: usize,
-    #[serde(default = "default_max_title_size")]
     pub max_title_size: usize,
     pub max_nickname_size: usize,
     pub max_members: usize,
@@ -222,9 +221,6 @@ pub struct Configuration {
     pub max_board_description: usize,
 }
 
-fn default_max_title_size() -> usize {
-    100
-}
 
 #[cfg(test)]
 mod tests {

ui/src/components/conversation.rs

@@ -348,6 +348,9 @@ pub fn Conversation(
                 let boards = BOARDS.read();
                 if let Some(board_data) = boards.map.get(&key) {
                     let self_member_id = MemberId::from(&board_data.self_sk.verifying_key());
+                    let config = &board_data.board_state.configuration.configuration;
+                    let max_title_size = config.max_title_size;
+                    let max_message_size = config.max_message_size;
                     let all_messages = get_all_messages(
                         &board_data.board_state.recent_messages,
                         &board_data.board_state.member_info,
@@ -374,7 +377,7 @@ pub fn Conversation(
                         .collect();
 
                     let tree = build_reply_tree(&all_messages, parent_id.as_ref());
-                    return Some((tree, self_member_id, member_names));
+                    return Some((tree, self_member_id, member_names, max_title_size, max_message_size));
                 }
             }
             None
@@ -456,10 +459,12 @@ pub fn Conversation(
                     {
                         if current_board_data.is_some() {
                             match message_tree.read().as_ref() {
-                                Some((tree, self_member_id, member_names)) if !tree.is_empty() => {
+                                Some((tree, self_member_id, member_names, max_title_size, max_message_size)) if !tree.is_empty() => {
                                     let tree = tree.clone();
                                     let self_member_id = *self_member_id;
                                     let member_names = member_names.clone();
+                                    let max_title_size = *max_title_size;
+                                    let max_message_size = *max_message_size;
                                     Some(rsx! {
                                         div { class: "space-y-2",
                                             {tree.into_iter().map({
@@ -478,6 +483,8 @@ pub fn Conversation(
                                                             member_names: member_names,
                                                             replies: msg_with_replies.replies.clone(),
                                                             depth: 0,
+                                                            max_title_size: max_title_size,
+                                                            max_message_size: max_message_size,
                                                             on_react: move |(msg_id, emoji)| {
                                                                 handle_toggle_reaction(msg_id, emoji);
                                                             },
@@ -797,9 +804,9 @@ fn MessageEditForm(
     msg_id: MessageId,
     on_edit: Option<EventHandler<(MessageId, String, String)>>,
     size: MessageSize,
-    #[props(default = 100)]
+    /// Maximum title length (from board configuration)
     max_title_size: usize,
-    #[props(default = 10000)]
+    /// Maximum message length (from board configuration)
     max_message_size: usize,
 ) -> Element {
     let (input_class, textarea_class, button_class, container_class) = match size {
@@ -1211,6 +1218,12 @@ pub fn MessageCard(
     /// Default reply context for replies section
     #[props(default)]
     default_reply_to: Option<ReplyContext>,
+    /// Maximum title length (from board configuration)
+    #[props(default = 100)]
+    max_title_size: usize,
+    /// Maximum message length (from board configuration)
+    #[props(default = 10000)]
+    max_message_size: usize,
 ) -> Element {
     let msg = message.clone();
     let is_self = msg.is_self;
@@ -1292,6 +1305,8 @@ pub fn MessageCard(
                                 msg_id: msg_id.clone(),
                                 on_edit: on_edit.clone(),
                                 size: size,
+                                max_title_size: max_title_size,
+                                max_message_size: max_message_size,
                             }
                         } else {
                             MessageContentDisplay {
@@ -1349,6 +1364,8 @@ pub fn MessageCard(
                                             member_names: member_names,
                                             replies: reply.replies.clone(),
                                             depth: depth + 1,
+                                            max_title_size: max_title_size,
+                                            max_message_size: max_message_size,
                                             on_react: on_react.clone(),
                                             on_request_delete: on_request_delete.clone(),
                                             on_edit: on_edit.clone(),
@@ -1429,6 +1446,8 @@ pub fn MessageCard(
                                     msg_id: msg_id.clone(),
                                     on_edit: on_edit.clone(),
                                     size: size,
+                                    max_title_size: max_title_size,
+                                    max_message_size: max_message_size,
                                 }
                             } else {
                                 MessageContentDisplay {

ui/src/components/conversation/message_input.rs

@@ -15,11 +15,9 @@ pub fn PostInput(
     /// Default reply context - applied when modal opens if replying_to is None
     #[props(default)]
     default_reply_to: Option<ReplyContext>,
-    /// Maximum title length (default 100)
-    #[props(default = 100)]
+    /// Maximum title length (from board configuration)
     max_title_size: usize,
-    /// Maximum message length (default 10000)
-    #[props(default = 10000)]
+    /// Maximum message length (from board configuration)
     max_message_size: usize,
 ) -> Element {
     let mut show_modal = use_signal(|| false);

ui/src/components/posts_view.rs

@@ -85,10 +85,17 @@ pub fn PostsView() -> Element {
                 div { class: "flex-1 overflow-y-auto",
                     div { class: "max-w-4xl mx-auto px-4 py-6",
                         {
-                            let self_member_id_for_posts = current_board_data.as_ref()
-                                .map(|rd| MemberId::from(&rd.self_sk.verifying_key()));
-                            match (posts.read().as_ref(), self_member_id_for_posts) {
-                                (Some(posts), Some(self_member_id)) if !posts.is_empty() => {
+                            let board_info = current_board_data.as_ref()
+                                .map(|rd| {
+                                    let config = &rd.board_state.configuration.configuration;
+                                    (
+                                        MemberId::from(&rd.self_sk.verifying_key()),
+                                        config.max_title_size,
+                                        config.max_message_size,
+                                    )
+                                });
+                            match (posts.read().as_ref(), board_info) {
+                                (Some(posts), Some((self_member_id, max_title_size, max_message_size))) if !posts.is_empty() => {
                                     rsx! {
                                         div { class: "space-y-8",
                                             {posts.iter().map({
@@ -107,6 +114,8 @@ pub fn PostsView() -> Element {
                                                                 self_member_id: self_member_id,
                                                                 expanded: false,
                                                                 show_replies: false,
+                                                                max_title_size: max_title_size,
+                                                                max_message_size: max_message_size,
                                                                 on_click: move |_| {
                                                                     // Get current board_id for navigation
                                                                     if let Some(key) = CURRENT_BOARD.read().owner_key {
@@ -198,21 +207,24 @@ pub fn SinglePostView(post_id: String) -> Element {
             .unwrap_or_default()
     });
 
-    // Find the post and self_member_id
+    // Find the post, self_member_id, and config
     let post_data = use_memo(move || {
         let current_board = CURRENT_BOARD.read();
         if let Some(key) = current_board.owner_key {
             let boards = BOARDS.read();
             if let Some(board_data) = boards.map.get(&key) {
                 let self_member_id = MemberId::from(&board_data.self_sk.verifying_key());
+                let config = &board_data.board_state.configuration.configuration;
+                let max_title_size = config.max_title_size;
+                let max_message_size = config.max_message_size;
                 let all_messages = get_all_messages(
                     &board_data.board_state.recent_messages,
                     &board_data.board_state.member_info,
                     self_member_id,
                     &board_data.secrets,
                 );
                 let post = all_messages.into_iter().find(|m| m.id_string() == post_id);
-                return post.map(|p| (p, self_member_id));
+                return post.map(|p| (p, self_member_id, max_title_size, max_message_size));
             }
         }
         None
@@ -262,7 +274,7 @@ pub fn SinglePostView(post_id: String) -> Element {
             div { class: "flex-1 overflow-y-auto",
                 {
                     match post_data.read().as_ref() {
-                        Some((post, self_member_id)) => {
+                        Some((post, self_member_id, max_title_size, max_message_size)) => {
                             rsx! {
                                 div { class: "max-w-4xl mx-auto px-4 py-6",
                                     MessageCard {
@@ -271,6 +283,8 @@ pub fn SinglePostView(post_id: String) -> Element {
                                         self_member_id: *self_member_id,
                                         expanded: true,
                                         show_replies: true,
+                                        max_title_size: *max_title_size,
+                                        max_message_size: *max_message_size,
                                         on_react: move |(msg_id, emoji)| {
                                             handle_toggle_reaction(msg_id, emoji);
                                         },