Auto compact at ~90% (#5292)

Users now hit a window exceeded limit and they usually don't know what
to do. This starts auto compact at ~90% of the window.

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

@@ -31,16 +31,16 @@ use super::rate_limits::render_status_limit_progress_bar;
 
 #[derive(Debug, Clone)]
 struct StatusContextWindowData {
-    percent_remaining: u8,
-    tokens_in_context: u64,
-    window: u64,
+    percent_remaining: i64,
+    tokens_in_context: i64,
+    window: i64,
 }
 
 #[derive(Debug, Clone)]
 pub(crate) struct StatusTokenUsageData {
-    total: u64,
-    input: u64,
-    output: u64,
+    total: i64,
+    input: i64,
+    output: i64,
     context_window: Option<StatusContextWindowData>,
 }
 

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

@@ -103,7 +103,8 @@ pub(crate) fn compose_account_display(config: &Config) -> Option<StatusAccountDi
     None
 }
 
-pub(crate) fn format_tokens_compact(value: u64) -> String {
+pub(crate) fn format_tokens_compact(value: i64) -> String {
+    let value = value.max(0);
     if value == 0 {
         return "0".to_string();
     }
@@ -111,14 +112,15 @@ pub(crate) fn format_tokens_compact(value: u64) -> String {
         return value.to_string();
     }
 
+    let value_f64 = value as f64;
     let (scaled, suffix) = if value >= 1_000_000_000_000 {
-        (value as f64 / 1_000_000_000_000.0, "T")
+        (value_f64 / 1_000_000_000_000.0, "T")
     } else if value >= 1_000_000_000 {
-        (value as f64 / 1_000_000_000.0, "B")
+        (value_f64 / 1_000_000_000.0, "B")
     } else if value >= 1_000_000 {
-        (value as f64 / 1_000_000.0, "M")
+        (value_f64 / 1_000_000.0, "M")
     } else {
-        (value as f64 / 1_000.0, "K")
+        (value_f64 / 1_000.0, "K")
     };
 
     let decimals = if scaled < 10.0 {

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

@@ -27,7 +27,7 @@ pub(crate) enum StatusRateLimitData {
 pub(crate) struct RateLimitWindowDisplay {
     pub used_percent: f64,
     pub resets_at: Option<String>,
-    pub window_minutes: Option<u64>,
+    pub window_minutes: Option<i64>,
 }
 
 impl RateLimitWindowDisplay {