Add UV_LOG_CONTEXT to EnvironmentOptions (#16031)

## Summary
Add UV_LOG_CONTEXT to EnvironmentOptions
Relates https://github.com/astral-sh/uv/issues/14720

## Test Plan

Tests with existing tests

crates/uv-settings/src/lib.rs

@@ -571,6 +571,7 @@ pub struct EnvironmentOptions {
     pub python_install_bin: Option<bool>,
     pub python_install_registry: Option<bool>,
     pub install_mirrors: PythonInstallMirrors,
+    pub log_context: Option<bool>,
 }
 
 impl EnvironmentOptions {
@@ -592,6 +593,7 @@ impl EnvironmentOptions {
                     EnvVars::UV_PYTHON_DOWNLOADS_JSON_URL,
                 )?,
             },
+            log_context: parse_boolish_environment_variable(EnvVars::UV_LOG_CONTEXT)?,
         })
     }
 }

crates/uv/src/lib.rs

@@ -367,6 +367,7 @@ async fn run(mut cli: Cli) -> Result<ExitStatus> {
         },
         durations_layer,
         globals.color,
+        environment.log_context.unwrap_or_default(),
     )?;
 
     // Configure the `Printer`, which controls user-facing output in the CLI.

crates/uv/src/logging.rs

@@ -14,6 +14,7 @@ use tracing_tree::time::Uptime;
 
 use uv_cli::ColorChoice;
 use uv_logging::UvFormat;
+#[cfg(feature = "tracing-durations-export")]
 use uv_static::EnvVars;
 
 #[derive(Debug, Default, Clone, Copy, PartialEq, Eq)]
@@ -35,6 +36,7 @@ pub(crate) fn setup_logging(
     level: Level,
     durations_layer: Option<impl Layer<Registry> + Send + Sync>,
     color: ColorChoice,
+    detailed_logging: bool,
 ) -> anyhow::Result<()> {
     // We use directives here to ensure `RUST_LOG` can override them
     let default_directive = match level {
@@ -87,7 +89,6 @@ pub(crate) fn setup_logging(
         };
     let writer = std::sync::Mutex::new(anstream::AutoStream::new(std::io::stderr(), color_choice));
 
-    let detailed_logging = std::env::var(EnvVars::UV_LOG_CONTEXT).is_ok();
     if detailed_logging {
         // Regardless of the tracing level, include the uptime and target for each message.
         tracing_subscriber::registry()