flip rate limit status bar (#6482)

flipping rate limit status bar to match chat.com/codex/settings/usage

<img width="848" height="420" alt="Screenshot 2025-11-10 at 4 53 41 PM"
src="https://github.com/user-attachments/assets/e326db3f-4405-412d-9e62-337282ec9a35"
/>

codex-rs/tui/src/status/card.rs

@@ -211,10 +211,11 @@ impl StatusHistoryCell {
         let mut lines = Vec::with_capacity(rows.len().saturating_mul(2));
 
         for row in rows {
+            let percent_remaining = (100.0 - row.percent_used).clamp(0.0, 100.0);
             let value_spans = vec![
-                Span::from(render_status_limit_progress_bar(row.percent_used)),
+                Span::from(render_status_limit_progress_bar(percent_remaining)),
                 Span::from(" "),
-                Span::from(format_status_limit_summary(row.percent_used)),
+                Span::from(format_status_limit_summary(percent_remaining)),
             ];
             let base_spans = formatter.full_spans(row.label.as_str(), value_spans);
             let base_line = Line::from(base_spans.clone());

codex-rs/tui/src/status/rate_limits.rs

@@ -124,8 +124,8 @@ pub(crate) fn compose_rate_limit_data(
     }
 }
 
-pub(crate) fn render_status_limit_progress_bar(percent_used: f64) -> String {
-    let ratio = (percent_used / 100.0).clamp(0.0, 1.0);
+pub(crate) fn render_status_limit_progress_bar(percent_remaining: f64) -> String {
+    let ratio = (percent_remaining / 100.0).clamp(0.0, 1.0);
     let filled = (ratio * STATUS_LIMIT_BAR_SEGMENTS as f64).round() as usize;
     let filled = filled.min(STATUS_LIMIT_BAR_SEGMENTS);
     let empty = STATUS_LIMIT_BAR_SEGMENTS.saturating_sub(filled);
@@ -136,8 +136,8 @@ pub(crate) fn render_status_limit_progress_bar(percent_used: f64) -> String {
     )
 }
 
-pub(crate) fn format_status_limit_summary(percent_used: f64) -> String {
-    format!("{percent_used:.0}% used")
+pub(crate) fn format_status_limit_summary(percent_remaining: f64) -> String {
+    format!("{percent_remaining:.0}% left")
 }
 
 fn capitalize_first(label: &str) -> String {

codex-rs/tui/src/status/snapshots/codex_tui__status__tests__status_snapshot_includes_monthly_limit.snap

@@ -18,5 +18,5 @@ expression: sanitized
 │                                                                            │
 │  Token usage:      1.2K total  (800 input + 400 output)                    │
 │  Context window:   100% left (1.2K used / 272K)                            │
-│  Monthly limit:    [██░░░░░░░░░░░░░░░░░░] 12% used (resets 07:08 on 7 May) │
+│  Monthly limit:    [██████████████████░░] 88% left (resets 07:08 on 7 May) │
 ╰────────────────────────────────────────────────────────────────────────────╯

codex-rs/tui/src/status/snapshots/codex_tui__status__tests__status_snapshot_includes_reasoning_details.snap

@@ -18,6 +18,6 @@ expression: sanitized
 │                                                                     │
 │  Token usage:      1.9K total  (1K input + 900 output)              │
 │  Context window:   100% left (2.25K used / 272K)                    │
-│  5h limit:         [███████████████░░░░░] 72% used (resets 03:14)   │
-│  Weekly limit:     [█████████░░░░░░░░░░░] 45% used (resets 03:24)   │
+│  5h limit:         [██████░░░░░░░░░░░░░░] 28% left (resets 03:14)   │
+│  Weekly limit:     [███████████░░░░░░░░░] 55% left (resets 03:24)   │
 ╰─────────────────────────────────────────────────────────────────────╯

codex-rs/tui/src/status/snapshots/codex_tui__status__tests__status_snapshot_shows_stale_limits_message.snap

@@ -18,7 +18,7 @@ expression: sanitized
 │                                                                     │
 │  Token usage:      1.9K total  (1K input + 900 output)              │
 │  Context window:   100% left (2.25K used / 272K)                    │
-│  5h limit:         [███████████████░░░░░] 72% used (resets 03:14)   │
-│  Weekly limit:     [████████░░░░░░░░░░░░] 40% used (resets 03:34)   │
+│  5h limit:         [██████░░░░░░░░░░░░░░] 28% left (resets 03:14)   │
+│  Weekly limit:     [████████████░░░░░░░░] 60% left (resets 03:34)   │
 │  Warning:          limits may be stale - start new turn to refresh. │
 ╰─────────────────────────────────────────────────────────────────────╯

codex-rs/tui/src/status/snapshots/codex_tui__status__tests__status_snapshot_truncates_in_narrow_terminal.snap

@@ -1,6 +1,5 @@
 ---
 source: tui/src/status/tests.rs
-assertion_line: 257
 expression: sanitized
 ---
 /status
@@ -20,6 +19,6 @@ expression: sanitized
 │                                            │
 │  Token usage:      1.9K total  (1K input + │
 │  Context window:   100% left (2.25K used / │
-│  5h limit:         [███████████████░░░░░]  │
+│  5h limit:         [██████░░░░░░░░░░░░░░]  │
 │                    (resets 03:14)          │
 ╰────────────────────────────────────────────╯