refactor(list): polish list commands with icons, compact timestamps, and styled discussions

Phase 3 of the UX overhaul. Enhances the issues, merge requests, and
notes list displays with visual indicators and improved formatting.

List display changes (src/cli/commands/list.rs):
- Add state icons to issues (opened/closed) and merge requests
  (opened/merged/closed) using Icons:: helpers alongside text labels
- Replace [DRAFT] prefix with Icons::mr_draft() glyph for draft MRs
- Switch from format_relative_time to format_relative_time_compact for
  tighter column widths in tabular output
- Switch from format_labels to format_labels_bare for unlabeled style
- Change format_discussions() return type from String to StyledCell so
  unresolved counts render with Theme::warning() color inline
- Bold the section headers ("Issues", "Merge Requests", "Notes")
  with count separated from the label for cleaner scanning
- Import Icons from render module

Test updates (src/cli/commands/list_tests.rs):
- Update format_discussions tests to assert on StyledCell.text field
  instead of raw String, since the function now returns styled output
- The unresolved-count test checks starts_with/contains to handle
  embedded ANSI escape codes from Theme::warning()

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/cli/commands/list.rs

@@ -1,4 +1,4 @@
-use crate::cli::render::{self, Align, StyledCell, Table as LoreTable, Theme};
+use crate::cli::render::{self, Align, Icons, StyledCell, Table as LoreTable, Theme};
 use rusqlite::Connection;
 use serde::Serialize;
 
@@ -657,15 +657,17 @@ fn format_assignees(assignees: &[String]) -> String {
     }
 }
 
-fn format_discussions(total: i64, unresolved: i64) -> String {
+fn format_discussions(total: i64, unresolved: i64) -> StyledCell {
     if total == 0 {
-        return String::new();
+        return StyledCell::plain(String::new());
     }
 
     if unresolved > 0 {
-        format!("{total}/{unresolved}!")
+        let text = format!("{total}/");
+        let warn = Theme::warning().render(&format!("{unresolved}!"));
+        StyledCell::plain(format!("{text}{warn}"))
     } else {
-        format!("{total}")
+        StyledCell::plain(format!("{total}"))
     }
 }
 
@@ -681,7 +683,8 @@ pub fn print_list_issues(result: &ListResult) {
     }
 
     println!(
-        "Issues (showing {} of {})\n",
+        "{}  {} of {}\n",
+        Theme::bold().render("Issues"),
         result.issues.len(),
         result.total_count
     );
@@ -698,16 +701,17 @@ pub fn print_list_issues(result: &ListResult) {
 
     for issue in &result.issues {
         let title = render::truncate(&issue.title, 45);
-        let relative_time = render::format_relative_time(issue.updated_at);
-        let labels = render::format_labels(&issue.labels, 2);
+        let relative_time = render::format_relative_time_compact(issue.updated_at);
+        let labels = render::format_labels_bare(&issue.labels, 2);
         let assignee = format_assignees(&issue.assignees);
         let discussions = format_discussions(issue.discussion_count, issue.unresolved_count);
 
-        let state_cell = if issue.state == "opened" {
-            StyledCell::styled(&issue.state, Theme::success())
+        let (icon, state_style) = if issue.state == "opened" {
+            (Icons::issue_opened(), Theme::success())
         } else {
-            StyledCell::styled(&issue.state, Theme::dim())
+            (Icons::issue_closed(), Theme::dim())
         };
+        let state_cell = StyledCell::styled(format!("{icon} {}", issue.state), state_style);
 
         let mut row = vec![
             StyledCell::styled(format!("#{}", issue.iid), Theme::info()),
@@ -730,7 +734,7 @@ pub fn print_list_issues(result: &ListResult) {
         row.extend([
             StyledCell::styled(assignee, Theme::accent()),
             StyledCell::styled(labels, Theme::warning()),
-            StyledCell::plain(discussions),
+            discussions,
             StyledCell::styled(relative_time, Theme::dim()),
         ]);
         table.add_row(row);
@@ -783,7 +787,8 @@ pub fn print_list_mrs(result: &MrListResult) {
     }
 
     println!(
-        "Merge Requests (showing {} of {})\n",
+        "{}  {} of {}\n",
+        Theme::bold().render("Merge Requests"),
         result.mrs.len(),
         result.total_count
     );
@@ -796,22 +801,23 @@ pub fn print_list_mrs(result: &MrListResult) {
 
     for mr in &result.mrs {
         let title = if mr.draft {
-            format!("[DRAFT] {}", render::truncate(&mr.title, 38))
+            format!("{} {}", Icons::mr_draft(), render::truncate(&mr.title, 42))
         } else {
             render::truncate(&mr.title, 45)
         };
 
-        let relative_time = render::format_relative_time(mr.updated_at);
+        let relative_time = render::format_relative_time_compact(mr.updated_at);
         let branches = format_branches(&mr.target_branch, &mr.source_branch, 25);
         let discussions = format_discussions(mr.discussion_count, mr.unresolved_count);
 
-        let state_cell = match mr.state.as_str() {
-            "opened" => StyledCell::styled(&mr.state, Theme::success()),
-            "merged" => StyledCell::styled(&mr.state, Theme::accent()),
-            "closed" => StyledCell::styled(&mr.state, Theme::error()),
-            "locked" => StyledCell::styled(&mr.state, Theme::warning()),
-            _ => StyledCell::styled(&mr.state, Theme::dim()),
+        let (icon, style) = match mr.state.as_str() {
+            "opened" => (Icons::mr_opened(), Theme::success()),
+            "merged" => (Icons::mr_merged(), Theme::accent()),
+            "closed" => (Icons::mr_closed(), Theme::error()),
+            "locked" => (Icons::mr_opened(), Theme::warning()),
+            _ => (Icons::mr_opened(), Theme::dim()),
         };
+        let state_cell = StyledCell::styled(format!("{icon} {}", mr.state), style);
 
         table.add_row(vec![
             StyledCell::styled(format!("!{}", mr.iid), Theme::info()),
@@ -822,7 +828,7 @@ pub fn print_list_mrs(result: &MrListResult) {
                 Theme::accent(),
             ),
             StyledCell::styled(branches, Theme::info()),
-            StyledCell::plain(discussions),
+            discussions,
             StyledCell::styled(relative_time, Theme::dim()),
         ]);
     }
@@ -909,7 +915,8 @@ pub fn print_list_notes(result: &NoteListResult) {
     }
 
     println!(
-        "Notes (showing {} of {})\n",
+        "{}  {} of {}\n",
+        Theme::bold().render("Notes"),
         result.notes.len(),
         result.total_count
     );
@@ -934,7 +941,7 @@ pub fn print_list_notes(result: &NoteListResult) {
             .unwrap_or_default();
         let path = format_note_path(note.position_new_path.as_deref(), note.position_new_line);
         let parent = format_note_parent(note.noteable_type.as_deref(), note.parent_iid);
-        let relative_time = render::format_relative_time(note.created_at);
+        let relative_time = render::format_relative_time_compact(note.created_at);
         let note_type = format_note_type(note.note_type.as_deref());
 
         table.add_row(vec![