refactor(cli): polish secondary commands with icons, number formatting, and section dividers

Phase 6 of the UX overhaul. Applies consistent visual treatment across
the remaining command outputs: stats, doctor, timeline, who, count,
and drift.

Stats (stats.rs):
- Apply render::format_number() to all numeric values (documents,
  FTS indexed, embedding counts, chunks) for thousand-separator
  formatting in large databases

Doctor (doctor.rs):
- Replace Unicode check/warning/cross symbols with Icons::success(),
  Icons::warning(), Icons::error() for glyph-mode awareness
- Add summary line after checks showing "Ready/Not ready" with counts
  of passed, warnings, and failed checks separated by middle dots
- Remove "lore doctor" title header for cleaner output

Count (count.rs):
- Right-align numeric values with {:>10} format for columnar output
  in count and state breakdown displays

Timeline (timeline.rs):
- Add entity icons (issue/MR) before entity references in event rows
- Refactor format_event_tag to pad plain text before applying style,
  preventing ANSI codes from breaking column alignment
- Extract style_padded() helper for width-then-style pattern

Who (who.rs):
- Add Icons::user() before usernames in expert, workload, reviews,
  and overlap displays
- Replace manual bold section headers with render::section_divider()
  in workload view (Assigned Issues, Authored MRs, Reviewing MRs,
  Unresolved Discussions)

Drift (drift.rs):
- Add Icons::error()/success() before drift detection status line
- Replace '#' bar character with Unicode full block for similarity
  curve visualization

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

src/cli/commands/count.rs

@@ -333,7 +333,7 @@ pub fn print_count(result: &CountResult) {
 
     if let Some(system_count) = result.system_count {
         println!(
-            "{}: {} {}",
+            "{}: {:>10} {}",
             Theme::info().render(&result.entity),
             Theme::bold().render(&count_str),
             Theme::dim().render(&format!(
@@ -343,22 +343,22 @@ pub fn print_count(result: &CountResult) {
         );
     } else {
         println!(
-            "{}: {}",
+            "{}: {:>10}",
             Theme::info().render(&result.entity),
             Theme::bold().render(&count_str)
         );
     }
 
     if let Some(breakdown) = &result.state_breakdown {
-        println!("  opened: {}", render::format_number(breakdown.opened));
+        println!("  opened: {:>10}", render::format_number(breakdown.opened));
         if let Some(merged) = breakdown.merged {
-            println!("  merged: {}", render::format_number(merged));
+            println!("  merged: {:>10}", render::format_number(merged));
         }
-        println!("  closed: {}", render::format_number(breakdown.closed));
+        println!("  closed: {:>10}", render::format_number(breakdown.closed));
         if let Some(locked) = breakdown.locked
             && locked > 0
         {
-            println!("  locked: {}", render::format_number(locked));
+            println!("  locked: {:>10}", render::format_number(locked));
         }
     }
 }