Add a persistent long-context toggle

Use expanded catalog context windows with proportional compaction limits, session persistence, status-line feedback, and optional key bindings.

Better-Codex-Patch: long-context

Author: AmazingTurtle

codex-rs/analytics/src/client_tests.rs

@@ -639,6 +639,7 @@ fn sample_thread(thread_id: &str) -> Thread {
 
 fn sample_thread_start_response() -> ClientResponsePayload {
     ClientResponsePayload::ThreadStart(ThreadStartResponse {
+        long_context: false,
         disabled_plugin_ids: Vec::new(),
         thread: sample_thread("thread-1"),
         model: "gpt-5".to_string(),
@@ -658,6 +659,7 @@ fn sample_thread_start_response() -> ClientResponsePayload {
 
 fn sample_thread_resume_response() -> ClientResponsePayload {
     ClientResponsePayload::ThreadResume(ThreadResumeResponse {
+        long_context: false,
         disabled_plugin_ids: Vec::new(),
         thread: sample_thread("thread-2"),
         model: "gpt-5".to_string(),
@@ -681,6 +683,7 @@ fn sample_thread_resume_response() -> ClientResponsePayload {
 
 fn sample_thread_fork_response() -> ClientResponsePayload {
     ClientResponsePayload::ThreadFork(ThreadForkResponse {
+        long_context: false,
         disabled_plugin_ids: Vec::new(),
         thread: sample_thread("thread-3"),
         model: "gpt-5".to_string(),

codex-rs/analytics/src/tests/support.rs

@@ -146,6 +146,7 @@ pub(super) fn sample_thread_start_response(
     model: &str,
 ) -> ClientResponsePayload {
     ClientResponsePayload::ThreadStart(ThreadStartResponse {
+        long_context: false,
         disabled_plugin_ids: Vec::new(),
         thread: sample_thread_with_metadata(
             thread_id,
@@ -212,6 +213,7 @@ pub(super) fn sample_thread_resume_response_with_source(
     parent_thread_id: Option<String>,
 ) -> ClientResponsePayload {
     ClientResponsePayload::ThreadResume(ThreadResumeResponse {
+        long_context: false,
         disabled_plugin_ids: Vec::new(),
         thread: sample_thread_with_metadata(
             thread_id,