Synced from monorepo

Changes:
- Detect the herdr multiplexer
- Mark /gboom as non-production code
- Bound peak memory when loading a large session
- Add a subagent lifecycle soak bounding threads, fds, and heap
- Stream inherited replay to bound fork memory
- Copy full plan from plan approval with y
- Stop armed signature verification from deleting the managed-deny smoke policy
- Add source-tagged terminal version telemetry
- Show the UI instantly and fetch models and settings in the background
- Session test helpers
- computer_reason on the ConversationHistoryDone trailer

crates/codegen/xai-grok-pager/src/input/mouse.rs

@@ -277,12 +277,15 @@ impl ScrollConfigOverrides {
 }
 
 /// Multiplexers that re-encode mouse into their own SGR stream (tmux with
-/// `mouse on`, screen, zellij all re-emit per pane). Cmux is a Ghostty-backed
-/// passthrough and keeps the outer brand's stream.
+/// `mouse on`, screen, zellij, herdr all re-emit per pane). Cmux is a
+/// Ghostty-backed passthrough and keeps the outer brand's stream.
 fn multiplexer_reencodes_mouse(multiplexer: MultiplexerKind) -> bool {
     matches!(
         multiplexer,
-        MultiplexerKind::Tmux | MultiplexerKind::Screen | MultiplexerKind::Zellij
+        MultiplexerKind::Tmux
+            | MultiplexerKind::Screen
+            | MultiplexerKind::Zellij
+            | MultiplexerKind::Herdr
     )
 }
 
@@ -311,8 +314,8 @@ impl ScrollConfig {
     }
 
     /// Derive scroll normalization defaults from detected terminal metadata.
-    /// tmux/screen/zellij re-encode mouse into their own SGR stream, so the
-    /// outer brand's events-per-tick/pacing calibration describes the wrong
+    /// tmux/screen/zellij/herdr re-encode mouse into their own SGR stream, so
+    /// the outer brand's events-per-tick/pacing calibration describes the wrong
     /// producer — trusting an outer ept=3 profile under tmux under-counts 3x
     /// per notch when the multiplexer re-chunks to one event. Under those
     /// multiplexers the brand table is replaced by a conservative ept=1

crates/codegen/xai-grok-pager/src/input/mouse/tests.rs

@@ -1147,7 +1147,7 @@ fn ghostty_duplicate_reports_do_not_feed_accel_banding() {
 
 #[test]
 fn multiplexed_sessions_use_conservative_profile_regardless_of_brand() {
-    // tmux/screen/zellij re-encode mouse into their own SGR stream, so
+    // tmux/screen/zellij/herdr re-encode mouse into their own SGR stream, so
     // the outer brand's ept/pacing calibration is wrong under them: the
     // conservative ept=1 shape applies no matter the brand. Cmux is a
     // passthrough and Undetected means no multiplexer — both keep the
@@ -1172,6 +1172,7 @@ fn multiplexed_sessions_use_conservative_profile_regardless_of_brand() {
         MultiplexerKind::Tmux,
         MultiplexerKind::Screen,
         MultiplexerKind::Zellij,
+        MultiplexerKind::Herdr,
     ] {
         for brand in brands {
             let cfg = ScrollConfig::from_terminal_context(brand, mux, Default::default());