refactor: eradicate deprecated tools (sticky_notes, pinned_files, context_workspaces, pr_checklist, preferences) and dead code

server/src/lib.rs

@@ -105,9 +105,7 @@ pub async fn ttl_sweeper_worker(state: Arc<MemoryState>) {
         state.project.tasks.modify(|tasks| {
             tasks.retain(|t| t.expires_at.is_none_or(|exp| exp > now));
         });
-        state.code.sticky.modify(|notes| {
-            notes.retain(|n| n.expires_at.is_none_or(|exp| exp > now));
-        });
+
         state.telemetry.handoff_memos.modify(|memos| {
             memos.retain(|m| m.expires_at.is_none_or(|exp| exp > now));
         });
@@ -139,48 +137,6 @@ pub async fn condense_graph_worker(state: Arc<MemoryState>) {
             .unwrap_or_default()
             .as_secs();
 
-        let sticky_condensation = state.code.sticky.read_with(|notes| {
-            if notes.len() > threshold {
-                let mut sorted = notes.clone();
-                sorted.sort_by_key(|n| n.timestamp);
-                let to_remove = sorted.len() - (threshold / 2);
-                let removed: Vec<_> = sorted.into_iter().take(to_remove).collect();
-                let mut content = String::new();
-                let mut ids = Vec::new();
-                for r in &removed {
-                    content.push_str(&format!("{}\n", r.content));
-                    ids.push(r.id.clone());
-                }
-                Some((content, ids))
-            } else {
-                None
-            }
-        });
-
-        if let Some((content, ids)) = sticky_condensation {
-            if !content.is_empty() {
-                let name = format!("StickyNote History {}", now);
-                state.modify_graph(|graph| {
-                    graph.entities.insert(
-                        name.clone(),
-                        crate::models::Entity {
-                            name: name.clone(),
-                            entity_type: "Historical Summary".to_string(),
-                            observations: vec![content],
-                            namespace: crate::models::default_namespace(),
-                            git_branch: None,
-                            ..Default::default()
-                        },
-                    );
-                });
-                let id_set: std::collections::HashSet<String> = ids.into_iter().collect();
-                state.code.sticky.modify(|notes| {
-                    notes.retain(|n| !id_set.contains(&n.id));
-                });
-                tracing::info!("Condensed sticky notes into Historical Summary.");
-            }
-        }
-
         let snippet_condensation = state.code.snippets.read_with(|snippets| {
             if snippets.len() > threshold {
                 let mut sorted = snippets.clone();