fix: clippy lint and multi-spacer distribution

- transcript.rs: use sort_by_key with Reverse instead of sort_by
  (clippy::unnecessary_sort_by)
- flex.rs: distribute extra space proportionally among multiple spacers
  instead of picking a single winner
- .gitignore: add .DS_Store entries

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

.gitignore

@@ -1,3 +1,5 @@
 # bv (beads viewer) local config and caches
 .bv/
 target/
+.DS_Store
+src/.DS_Store

src/layout/flex.rs

@@ -2,11 +2,11 @@ use crate::format;
 use crate::layout::ActiveSection;
 use crate::section::{self, RenderContext};
 
-/// Expand the winning flex section to fill remaining terminal width.
+/// Expand flex sections to fill remaining terminal width.
 ///
 /// Rules:
-/// - Spacers take priority over non-spacer flex sections
-/// - Only one flex section wins per line
+/// - If multiple spacers exist, distribute extra space proportionally among them
+/// - If only non-spacer flex sections exist, pick one winner (spacer > non-spacer)
 /// - Spacer: fill with spaces
 /// - context_bar: rebuild bar with wider width
 /// - Other: pad with trailing spaces
@@ -18,7 +18,34 @@ pub fn flex_expand(active: &mut [ActiveSection], ctx: &RenderContext, separator:
         return;
     }
 
-    // Find winning flex section: spacer wins over non-spacer
+    let extra = term_width - current_width;
+
+    // Collect all spacer indices
+    let spacer_indices: Vec<usize> = active
+        .iter()
+        .enumerate()
+        .filter(|(_, s)| s.is_spacer)
+        .map(|(i, _)| i)
+        .collect();
+
+    // If multiple spacers, distribute extra space among them
+    if spacer_indices.len() > 1 {
+        let per_spacer = extra / spacer_indices.len();
+        let remainder = extra % spacer_indices.len();
+
+        for (i, &idx) in spacer_indices.iter().enumerate() {
+            // First spacers get +1 char from remainder
+            let this_width = per_spacer + if i < remainder { 1 } else { 0 } + 1;
+            let padding = " ".repeat(this_width);
+            active[idx].output = section::SectionOutput {
+                raw: padding.clone(),
+                ansi: padding,
+            };
+        }
+        return;
+    }
+
+    // Single spacer or non-spacer flex: find winning flex section
     let mut flex_idx: Option<usize> = None;
     for (i, sec) in active.iter().enumerate() {
         if !sec.is_flex {
@@ -35,7 +62,6 @@ pub fn flex_expand(active: &mut [ActiveSection], ctx: &RenderContext, separator:
     }
 
     let Some(idx) = flex_idx else { return };
-    let extra = term_width - current_width;
 
     if active[idx].is_spacer {
         let padding = " ".repeat(extra + 1);

src/transcript.rs

@@ -125,7 +125,7 @@ pub fn parse_transcript(path: &Path, skip_lines: usize) -> Option<TranscriptStat
 
     // Sort by count descending
     let mut sorted: Vec<(String, u64)> = counts.into_iter().collect();
-    sorted.sort_by(|a, b| b.1.cmp(&a.1));
+    sorted.sort_by_key(|item| std::cmp::Reverse(item.1));
     stats.tool_counts = sorted;
 
     Some(stats)