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

server/src/models.rs

@@ -81,21 +81,6 @@ impl CodeChange {
         self.branch.as_deref().or(self.git_branch.as_deref())
     }
 }
-#[derive(Debug, Clone, Serialize, Deserialize, Default)]
-pub struct StickyNote {
-    #[serde(default = "generate_uuid")]
-    pub id: String,
-    pub timestamp: u64,
-    pub content: String,
-    #[serde(default)]
-    pub expires_at: Option<u64>,
-    #[serde(default = "default_namespace")]
-    pub namespace: String,
-    #[serde(default)]
-    pub category: Option<String>,
-    #[serde(default)]
-    pub author: Option<String>,
-}
 
 pub fn generate_uuid() -> String {
     uuid::Uuid::new_v4().to_string()
@@ -162,18 +147,20 @@ pub fn normalize_relation_type(input: &str) -> String {
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize, JsonSchema, Default)]
 #[serde(rename_all = "snake_case")]
 pub enum TaskStatus {
+    Pending,
     #[default]
     Active,
     InProgress,
     Blocked,
     Completed,
+    Cancelled,
 }
 
 impl TaskStatus {
     pub fn is_active(&self) -> bool {
         matches!(
             self,
-            TaskStatus::Active | TaskStatus::InProgress | TaskStatus::Blocked
+            TaskStatus::Pending | TaskStatus::Active | TaskStatus::InProgress | TaskStatus::Blocked
         )
     }
 
@@ -183,10 +170,12 @@ impl TaskStatus {
 
     pub fn as_str(&self) -> &'static str {
         match self {
+            TaskStatus::Pending => "pending",
             TaskStatus::Active => "active",
             TaskStatus::InProgress => "in_progress",
             TaskStatus::Blocked => "blocked",
             TaskStatus::Completed => "completed",
+            TaskStatus::Cancelled => "cancelled",
         }
     }
 }
@@ -400,18 +389,6 @@ fn default_adr_status() -> String {
     "accepted".to_string()
 }
 
-#[derive(Debug, Clone, Serialize, Deserialize, Default)]
-pub struct Preference {
-    pub key: String,
-    pub value: String,
-    pub updated_at: u64,
-    #[serde(default = "default_namespace")]
-    pub namespace: String,
-    #[serde(default)]
-    pub category: Option<String>,
-    #[serde(default)]
-    pub rationale: Option<String>,
-}
 
 #[derive(Debug, Clone, Serialize, Deserialize, Default)]
 pub struct ErrorFix {
@@ -434,19 +411,6 @@ pub struct ErrorFix {
     pub toolchain: Option<String>,
 }
 
-#[derive(Debug, Clone, Serialize, Deserialize, Default)]
-pub struct PinnedFile {
-    pub namespace: String,
-    pub file_path: String,
-    pub timestamp: u64,
-    pub git_branch: Option<String>,
-    #[serde(default)]
-    pub repo_name: Option<String>,
-    #[serde(default)]
-    pub symbol_or_line: Option<String>,
-    #[serde(default)]
-    pub pin_reason: Option<String>,
-}
 
 #[derive(Debug, Clone, Serialize, Deserialize, Default)]
 pub struct SessionSummary {
@@ -554,20 +518,6 @@ pub struct EnvironmentDetail {
     pub ssh_host: Option<String>,
 }
 
-#[derive(Debug, Clone, Serialize, Deserialize, Default)]
-pub struct PrChecklistItem {
-    pub namespace: String,
-    pub id: String,
-    pub description: String,
-    #[serde(default)]
-    pub is_checked: bool,
-    #[serde(default)]
-    pub category: Option<String>,
-    #[serde(default)]
-    pub automated_check: Option<String>,
-    #[serde(default)]
-    pub repo_name: Option<String>,
-}
 
 #[derive(Debug, Clone, Serialize, Deserialize, Default)]
 pub struct TechDebt {
@@ -595,22 +545,6 @@ pub struct TechDebt {
     pub effort_estimate: Option<String>,
 }
 
-#[derive(Debug, Clone, Serialize, Deserialize, Default)]
-pub struct ContextWorkspace {
-    pub name: String,
-    pub namespace: String,
-    pub pinned_files: Vec<String>,
-    pub active_task_ids: Vec<String>,
-    pub saved_at: u64,
-    #[serde(default)]
-    pub repo_name: Option<String>,
-    #[serde(default)]
-    pub git_branch: Option<String>,
-    #[serde(default)]
-    pub vcs_revision: Option<String>,
-    #[serde(default)]
-    pub description: Option<String>,
-}
 
 #[derive(Debug, Clone, Serialize, Deserialize, Default)]
 pub struct GateRecord {