fix(toolchain): Unbreak client startup

This reverts commit 9f900a7325304a06d9e0913a8e661d7bbc86ad04.

22 files changed, 207 insertions, 138 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6ea2a2c9..2d148911 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -37,7 +37,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 * feat(plugins): add tab_history to the session metadata (https://github.com/zellij-org/zellij/pull/4014)
 * chore(repo): update some dependencies (https://github.com/zellij-org/zellij/pull/4019)
 * fix(grid): reap sixel images on clear (https://github.com/zellij-org/zellij/pull/3982)
-* chore(repo): remove compile warnings (https://github.com/zellij-org/zellij/pull/4026)
 * fix(panes): properly render stacked panes when pane frames are disabled (https://github.com/zellij-org/zellij/pull/4035)
 
 ## [0.41.2] - 2024-11-19
diff --git a/Cargo.lock b/Cargo.lock
index 84095f90..c352d6c3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5102,39 +5102,40 @@ dependencies = [
 
 [[package]]
 name = "xflags"
-version = "0.3.2"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7d9e15fbb3de55454b0106e314b28e671279009b363e6f1d8e39fdc3bf048944"
+checksum = "c4554b580522d0ca238369c16b8f6ce34524d61dafe7244993754bbd05f2c2ea"
 dependencies = [
  "xflags-macros",
 ]
 
 [[package]]
 name = "xflags-macros"
-version = "0.3.2"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "672423d4fea7ffa2f6c25ba60031ea13dc6258070556f125cc4d790007d4a155"
+checksum = "f58e7b3ca8977093aae6b87b6a7730216fc4c53a6530bab5c43a783cd810c1a8"
 
 [[package]]
 name = "xshell"
-version = "0.2.7"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9e7290c623014758632efe00737145b6867b66292c42167f2ec381eb566a373d"
+checksum = "6d47097dc5c85234b1e41851b3422dd6d19b3befdd35b4ae5ce386724aeca981"
 dependencies = [
  "xshell-macros",
 ]
 
 [[package]]
 name = "xshell-macros"
-version = "0.2.7"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32ac00cd3f8ec9c1d33fb3e7958a82df6989c42d747bd326c822b1d625283547"
+checksum = "88301b56c26dd9bf5c43d858538f82d6f3f7764767defbc5d34e59459901c41a"
 
 [[package]]
 name = "xtask"
 version = "0.1.0"
 dependencies = [
  "anyhow",
+ "lazy_static",
  "prost-build",
  "toml 0.5.10",
  "which",
diff --git a/xtask/Cargo.toml b/xtask/Cargo.toml
index d52793f0..2ab2b1c4 100644
--- a/xtask/Cargo.toml
+++ b/xtask/Cargo.toml
@@ -6,8 +6,9 @@ edition = "2021"
 
 [dependencies]
 anyhow = "1.0"
-xshell = "= 0.2.7"
-xflags = "0.3.2"
+lazy_static = "1.4"
+xshell = "= 0.2.2"
+xflags = "0.3.1"
 which = "4.2"
 toml = "0.5"
 prost-build = "0.11.9"
diff --git a/xtask/src/build.rs b/xtask/src/build.rs
index 0cd5bdb0..4dc17e68 100644
--- a/xtask/src/build.rs
+++ b/xtask/src/build.rs
@@ -22,7 +22,7 @@ pub fn build(sh: &Shell, flags: flags::Build) -> anyhow::Result<()> {
         std::process::exit(1);
     }
 
-    for WorkspaceMember { crate_name, .. } in crate::workspace_members()
+    for WorkspaceMember { crate_name, .. } in crate::WORKSPACE_MEMBERS
         .iter()
         .filter(|member| member.build)
     {
@@ -32,8 +32,10 @@ pub fn build(sh: &Shell, flags: flags::Build) -> anyhow::Result<()> {
             if flags.no_plugins {
                 continue;
             }
-        } else if flags.plugins_only {
-            continue;
+        } else {
+            if flags.plugins_only {
+                continue;
+            }
         }
 
         // zellij-utils requires protobuf definition files to be present. Usually these are
@@ -151,7 +153,7 @@ pub fn manpage(sh: &Shell) -> anyhow::Result<()> {
 
     let project_root = crate::project_root();
     let asset_dir = &project_root.join("assets").join("man");
-    sh.create_dir(asset_dir).context(err_context)?;
+    sh.create_dir(&asset_dir).context(err_context)?;
     let _pd = sh.push_dir(asset_dir);
 
     cmd!(sh, "{mandown} {project_root}/docs/MANPAGE.md 1")
diff --git a/xtask/src/ci.rs b/xtask/src/ci.rs
index b1c5fe2e..99f195da 100644
--- a/xtask/src/ci.rs
+++ b/xtask/src/ci.rs
@@ -77,7 +77,7 @@ fn e2e_build(sh: &Shell) -> anyhow::Result<()> {
 
     sh.remove_path(&data_dir)
         .and_then(|_| sh.create_dir(&data_dir))
-        .and_then(|_| sh.create_dir(data_dir.join("plugins")))
+        .and_then(|_| sh.create_dir(&data_dir.join("plugins")))
         .context(err_context)?;
 
     for plugin in plugins {
@@ -119,15 +119,15 @@ fn e2e_test(sh: &Shell, args: Vec<OsString>) -> anyhow::Result<()> {
 
             // plugin system tests are run here because they're medium-slow
             let _pd = sh.push_dir(Path::new("zellij-server"));
-            println!();
-            let msg = ">> Testing Plugin System".to_string();
+            println!("");
+            let msg = format!(">> Testing Plugin System");
             crate::status(&msg);
             println!("{}", msg);
 
             cmd!(sh, "{cargo} test -- --ignored --nocapture --test-threads 1")
                 .args(args.clone())
                 .run()
-                .with_context(|| "Failed to run tests for the Plugin System".to_string())?;
+                .with_context(|| format!("Failed to run tests for the Plugin System"))?;
             Ok(())
         })
         .context(err_context)
diff --git a/xtask/src/clippy.rs b/xtask/src/clippy.rs
index 0cb9146e..b5e2cfe5 100644
--- a/xtask/src/clippy.rs
+++ b/xtask/src/clippy.rs
@@ -21,7 +21,7 @@ pub fn clippy(sh: &Shell, _flags: flags::Clippy) -> anyhow::Result<()> {
         .and_then(|_| crate::cargo())
         .context("failed to run task 'clippy'")?;
 
-    for WorkspaceMember { crate_name, .. } in crate::workspace_members().iter() {
+    for WorkspaceMember { crate_name, .. } in crate::WORKSPACE_MEMBERS.iter() {
         let _pd = sh.push_dir(Path::new(crate_name));
         // Tell the user where we are now
         println!();
diff --git a/xtask/src/flags.rs b/xtask/src/flags.rs
index 8ad32870..1c693626 100644
--- a/xtask/src/flags.rs
+++ b/xtask/src/flags.rs
@@ -9,7 +9,7 @@ xflags::xflags! {
     cmd xtask {
         /// Deprecation warning. Compatibility to transition from `cargo make`.
         cmd deprecated {
-            repeated _args: OsString
+            repeated args: OsString
         }
 
         /// Tasks for the CI
@@ -128,7 +128,7 @@ pub enum XtaskCmd {
 
 #[derive(Debug)]
 pub struct Deprecated {
-    pub _args: Vec<OsString>,
+    pub args: Vec<OsString>,
 }
 
 #[derive(Debug)]
diff --git a/xtask/src/format.rs b/xtask/src/format.rs
index 88e858cd..4084a1f3 100644
--- a/xtask/src/format.rs
+++ b/xtask/src/format.rs
@@ -11,7 +11,7 @@ pub fn format(sh: &Shell, flags: flags::Format) -> anyhow::Result<()> {
         .and_then(|_| crate::cargo())
         .context("failed to run task 'format'")?;
 
-    for WorkspaceMember { crate_name, .. } in crate::workspace_members().iter() {
+    for WorkspaceMember { crate_name, .. } in crate::WORKSPACE_MEMBERS.iter() {
         let _pd = sh.push_dir(Path::new(crate_name));
         // Tell the user where we are now
         println!();
diff --git a/xtask/src/main.rs b/xtask/src/main.rs
index 1bb3eec9..e17f0383 100644
--- a/xtask/src/main.rs
+++ b/xtask/src/main.rs
@@ -19,7 +19,6 @@ use anyhow::Context;
 use std::{
     env,
     path::{Path, PathBuf},
-    sync::OnceLock,
     time::Instant,
 };
 use xshell::Shell;
@@ -29,72 +28,24 @@ pub struct WorkspaceMember {
     build: bool,
 }
 
-fn workspace_members() -> &'static Vec<WorkspaceMember> {
-    static WORKSPACE_MEMBERS: OnceLock<Vec<WorkspaceMember>> = OnceLock::new();
-    WORKSPACE_MEMBERS.get_or_init(|| {
-        vec![
-            WorkspaceMember {
-                crate_name: "default-plugins/compact-bar",
-                build: true,
-            },
-            WorkspaceMember {
-                crate_name: "default-plugins/status-bar",
-                build: true,
-            },
-            WorkspaceMember {
-                crate_name: "default-plugins/strider",
-                build: true,
-            },
-            WorkspaceMember {
-                crate_name: "default-plugins/tab-bar",
-                build: true,
-            },
-            WorkspaceMember {
-                crate_name: "default-plugins/fixture-plugin-for-tests",
-                build: true,
-            },
-            WorkspaceMember {
-                crate_name: "default-plugins/session-manager",
-                build: true,
-            },
-            WorkspaceMember {
-                crate_name: "default-plugins/configuration",
-                build: true,
-            },
-            WorkspaceMember {
-                crate_name: "default-plugins/plugin-manager",
-                build: true,
-            },
-            WorkspaceMember {
-                crate_name: "default-plugins/about",
-                build: true,
-            },
-            WorkspaceMember {
-                crate_name: "zellij-utils",
-                build: false,
-            },
-            WorkspaceMember {
-                crate_name: "zellij-tile-utils",
-                build: false,
-            },
-            WorkspaceMember {
-                crate_name: "zellij-tile",
-                build: false,
-            },
-            WorkspaceMember {
-                crate_name: "zellij-client",
-                build: false,
-            },
-            WorkspaceMember {
-                crate_name: "zellij-server",
-                build: false,
-            },
-            WorkspaceMember {
-                crate_name: ".",
-                build: true,
-            },
-        ]
-    })
+lazy_static::lazy_static! {
+    pub static ref WORKSPACE_MEMBERS: Vec<WorkspaceMember> = vec![
+        WorkspaceMember{crate_name: "default-plugins/compact-bar", build: true},
+        WorkspaceMember{crate_name: "default-plugins/status-bar", build: true},
+        WorkspaceMember{crate_name: "default-plugins/strider", build: true},
+        WorkspaceMember{crate_name: "default-plugins/tab-bar", build: true},
+        WorkspaceMember{crate_name: "default-plugins/fixture-plugin-for-tests", build: true},
+        WorkspaceMember{crate_name: "default-plugins/session-manager", build: true},
+        WorkspaceMember{crate_name: "default-plugins/configuration", build: true},
+        WorkspaceMember{crate_name: "default-plugins/plugin-manager", build: true},
+        WorkspaceMember{crate_name: "default-plugins/about", build: true},
+        WorkspaceMember{crate_name: "zellij-utils", build: false},
+        WorkspaceMember{crate_name: "zellij-tile-utils", build: false},
+        WorkspaceMember{crate_name: "zellij-tile", build: false},
+        WorkspaceMember{crate_name: "zellij-client", build: false},
+        WorkspaceMember{crate_name: "zellij-server", build: false},
+        WorkspaceMember{crate_name: ".", build: true},
+    ];
 }
 
 fn main() -> anyhow::Result<()> {
diff --git a/xtask/src/pipelines.rs b/xtask/src/pipelines.rs
index d3277c2f..437cefbf 100644
--- a/xtask/src/pipelines.rs
+++ b/xtask/src/pipelines.rs
@@ -317,7 +317,7 @@ pub fn publish(sh: &Shell, flags: flags::Publish) -> anyhow::Result<()> {
         }
 
         // Publish all the crates
-        for WorkspaceMember { crate_name, .. } in crate::workspace_members().iter() {
+        for WorkspaceMember { crate_name, .. } in crate::WORKSPACE_MEMBERS.iter() {
             if crate_name.contains("plugin") || crate_name.contains("xtask") {
                 continue;
             }
diff --git a/xtask/src/test.rs b/xtask/src/test.rs
index 1c725f38..9bcfb37a 100644
--- a/xtask/src/test.rs
+++ b/xtask/src/test.rs
@@ -20,15 +20,15 @@ pub fn test(sh: &Shell, flags: flags::Test) -> anyhow::Result<()> {
     )
     .context(err_context)?;
 
-    for WorkspaceMember { crate_name, .. } in crate::workspace_members().iter() {
+    for WorkspaceMember { crate_name, .. } in crate::WORKSPACE_MEMBERS.iter() {
         // the workspace root only contains e2e tests, skip it
-        if crate_name == &"." {
+        if *crate_name == "." {
             continue;
         }
 
         let _pd = sh.push_dir(Path::new(crate_name));
         // Tell the user where we are now
-        println!();
+        println!("");
         let msg = format!(">> Testing '{}'", crate_name);
         crate::status(&msg);
         println!("{}", msg);
@@ -60,9 +60,9 @@ pub fn host_target_triple(sh: &Shell) -> anyhow::Result<String> {
                 return None;
             }
             if let Some((_, triple)) = line.split_once(": ") {
-                Some(triple.to_string())
+                return Some(triple.to_string());
             } else {
-                None
+                return None;
             }
         })
         .collect::<Vec<String>>();
diff --git a/zellij-client/src/lib.rs b/zellij-client/src/lib.rs
index 725ed8cd..0d7b313b 100644
--- a/zellij-client/src/lib.rs
+++ b/zellij-client/src/lib.rs
@@ -46,14 +46,15 @@ pub(crate) enum ClientInstruction {
     UnblockInputThread,
     Exit(ExitReason),
     Connected,
+    ActiveClients(Vec<ClientId>),
     StartedParsingStdinQuery,
     DoneParsingStdinQuery,
     Log(Vec<String>),
     LogError(Vec<String>),
     SwitchSession(ConnectToSession),
     SetSynchronizedOutput(Option<SyncOutput>),
-    UnblockCliPipeInput(()), // String -> pipe name
-    CliPipeOutput((), ()),   // String -> pipe name, String -> output
+    UnblockCliPipeInput(String),   // String -> pipe name
+    CliPipeOutput(String, String), // String -> pipe name, String -> output
     QueryTerminalSize,
     WriteConfigToDisk { config: String },
 }
@@ -65,16 +66,17 @@ impl From<ServerToClientMsg> for ClientInstruction {
             ServerToClientMsg::Render(buffer) => ClientInstruction::Render(buffer),
             ServerToClientMsg::UnblockInputThread => ClientInstruction::UnblockInputThread,
             ServerToClientMsg::Connected => ClientInstruction::Connected,
+            ServerToClientMsg::ActiveClients(clients) => ClientInstruction::ActiveClients(clients),
             ServerToClientMsg::Log(log_lines) => ClientInstruction::Log(log_lines),
             ServerToClientMsg::LogError(log_lines) => ClientInstruction::LogError(log_lines),
             ServerToClientMsg::SwitchSession(connect_to_session) => {
                 ClientInstruction::SwitchSession(connect_to_session)
             },
-            ServerToClientMsg::UnblockCliPipeInput(_pipe_name) => {
-                ClientInstruction::UnblockCliPipeInput(())
+            ServerToClientMsg::UnblockCliPipeInput(pipe_name) => {
+                ClientInstruction::UnblockCliPipeInput(pipe_name)
             },
-            ServerToClientMsg::CliPipeOutput(_pipe_name, _output) => {
-                ClientInstruction::CliPipeOutput((), ())
+            ServerToClientMsg::CliPipeOutput(pipe_name, output) => {
+                ClientInstruction::CliPipeOutput(pipe_name, output)
             },
             ServerToClientMsg::QueryTerminalSize => ClientInstruction::QueryTerminalSize,
             ServerToClientMsg::WriteConfigToDisk { config } => {
@@ -92,6 +94,7 @@ impl From<&ClientInstruction> for ClientContext {
             ClientInstruction::Render(_) => ClientContext::Render,
             ClientInstruction::UnblockInputThread => ClientContext::UnblockInputThread,
             ClientInstruction::Connected => ClientContext::Connected,
+            ClientInstruction::ActiveClients(_) => ClientContext::ActiveClients,
             ClientInstruction::Log(_) => ClientContext::Log,
             ClientInstruction::LogError(_) => ClientContext::LogError,
             ClientInstruction::StartedParsingStdinQuery => ClientContext::StartedParsingStdinQuery,
diff --git a/zellij-server/src/lib.rs b/zellij-server/src/lib.rs
index 6e652c05..879fd545 100644
--- a/zellij-server/src/lib.rs
+++ b/zellij-server/src/lib.rs
@@ -92,6 +92,7 @@ pub enum ServerInstruction {
         ClientId,
     ),
     ConnStatus(ClientId),
+    ActiveClients(ClientId),
     Log(Vec<String>, ClientId),
     LogError(Vec<String>, ClientId),
     SwitchSession(ConnectToSession, ClientId),
@@ -132,6 +133,7 @@ impl From<&ServerInstruction> for ServerContext {
             ServerInstruction::DetachSession(..) => ServerContext::DetachSession,
             ServerInstruction::AttachClient(..) => ServerContext::AttachClient,
             ServerInstruction::ConnStatus(..) => ServerContext::ConnStatus,
+            ServerInstruction::ActiveClients(_) => ServerContext::ActiveClients,
             ServerInstruction::Log(..) => ServerContext::Log,
             ServerInstruction::LogError(..) => ServerContext::LogError,
             ServerInstruction::SwitchSession(..) => ServerContext::SwitchSession,
@@ -1043,6 +1045,15 @@ pub fn start_server(mut os_input: Box<dyn ServerOsApi>, socket_path: PathBuf) {
                 let _ = os_input.send_to_client(client_id, ServerToClientMsg::Connected);
                 remove_client!(client_id, os_input, session_state);
             },
+            ServerInstruction::ActiveClients(client_id) => {
+                let client_ids = session_state.read().unwrap().client_ids();
+                send_to_client!(
+                    client_id,
+                    os_input,
+                    ServerToClientMsg::ActiveClients(client_ids),
+                    session_state
+                );
+            },
             ServerInstruction::Log(lines_to_log, client_id) => {
                 send_to_client!(
                     client_id,
diff --git a/zellij-server/src/panes/tiled_panes/tiled_pane_grid.rs b/zellij-server/src/panes/tiled_panes/tiled_pane_grid.rs
index ad497822..5f2bf834 100644
--- a/zellij-server/src/panes/tiled_panes/tiled_pane_grid.rs
+++ b/zellij-server/src/panes/tiled_panes/tiled_pane_grid.rs
@@ -2033,11 +2033,8 @@ impl<'a> TiledPaneGrid<'a> {
             return None;
         }
         StackedPanes::new(self.panes.clone())
-            .combine_vertically_aligned_panes_to_stack(&pane_id, neighboring_pane_ids_above)
-            .non_fatal();
-        StackedPanes::new(self.panes.clone())
-            .expand_pane(&pane_id)
-            .non_fatal();
+            .combine_vertically_aligned_panes_to_stack(&pane_id, neighboring_pane_ids_above);
+        StackedPanes::new(self.panes.clone()).expand_pane(&pane_id);
         Some(vec![*pane_id])
     }
     pub fn unstack_pane_up(&mut self, pane_id: &PaneId) -> Option<Vec<PaneId>> {
@@ -2117,11 +2114,8 @@ impl<'a> TiledPaneGrid<'a> {
             return None;
         }
         StackedPanes::new(self.panes.clone())
-            .combine_vertically_aligned_panes_to_stack(&pane_id, neighboring_pane_ids_below)
-            .non_fatal();
-        StackedPanes::new(self.panes.clone())
-            .expand_pane(&pane_id)
-            .non_fatal();
+            .combine_vertically_aligned_panes_to_stack(&pane_id, neighboring_pane_ids_below);
+        StackedPanes::new(self.panes.clone()).expand_pane(&pane_id);
         Some(vec![*pane_id])
     }
     pub fn direct_neighboring_pane_ids_to_the_left(&self, root_pane_id: &PaneId) -> Vec<PaneId> {
@@ -2190,12 +2184,11 @@ impl<'a> TiledPaneGrid<'a> {
         {
             return None;
         }
-        StackedPanes::new(self.panes.clone())
-            .combine_horizontally_aligned_panes_to_stack(&pane_id, neighboring_pane_ids_to_the_left)
-            .non_fatal();
-        StackedPanes::new(self.panes.clone())
-            .expand_pane(&pane_id)
-            .non_fatal();
+        StackedPanes::new(self.panes.clone()).combine_horizontally_aligned_panes_to_stack(
+            &pane_id,
+            neighboring_pane_ids_to_the_left,
+        );
+        StackedPanes::new(self.panes.clone()).expand_pane(&pane_id);
         Some(vec![*pane_id])
     }
     pub fn direct_neighboring_pane_ids_to_the_right(&self, root_pane_id: &PaneId) -> Vec<PaneId> {
@@ -2267,15 +2260,11 @@ impl<'a> TiledPaneGrid<'a> {
         if neighboring_pane_ids_to_the_right.is_empty() {
             return None;
         }
-        StackedPanes::new(self.panes.clone())
-            .combine_horizontally_aligned_panes_to_stack(
-                &pane_id,
-                neighboring_pane_ids_to_the_right,
-            )
-            .non_fatal();
-        StackedPanes::new(self.panes.clone())
-            .expand_pane(&pane_id)
-            .non_fatal();
+        StackedPanes::new(self.panes.clone()).combine_horizontally_aligned_panes_to_stack(
+            &pane_id,
+            neighboring_pane_ids_to_the_right,
+        );
+        StackedPanes::new(self.panes.clone()).expand_pane(&pane_id);
         Some(vec![*pane_id])
     }
     pub fn next_stack_id(&self) -> usize {
@@ -2293,6 +2282,74 @@ impl<'a> TiledPaneGrid<'a> {
             .set_geom(geom_of_active_pane);
         Ok(())
     }
+    fn get_vertically_aligned_pane_id_above(&self, pane_id: &PaneId) -> Option<PaneId> {
+        let Some(pane_geom) = self.get_pane_geom(pane_id) else {
+            return None;
+        };
+        let panes = self.panes.borrow();
+        let stacked_panes = StackedPanes::new(self.panes.clone());
+        let pane_geom = if pane_geom.is_stacked() {
+            stacked_panes
+                .position_and_size_of_stack(pane_id)
+                .unwrap_or(pane_geom)
+        } else {
+            pane_geom
+        };
+        panes.iter().find_map(|(candidate_pane_id, p)| {
+            if !p.selectable() {
+                return None;
+            }
+            let candidate_geom = p.current_geom();
+            let candidate_geom = if candidate_geom.is_stacked() {
+                stacked_panes
+                    .position_and_size_of_stack(candidate_pane_id)
+                    .unwrap_or(candidate_geom)
+            } else {
+                candidate_geom
+            };
+            if candidate_geom.y + candidate_geom.rows.as_usize() == pane_geom.y
+                && candidate_geom.x == pane_geom.x
+                && candidate_geom.cols.as_usize() == pane_geom.cols.as_usize()
+            {
+                return Some(p.pid());
+            }
+            return None;
+        })
+    }
+    fn get_vertically_aligned_pane_id_below(&self, pane_id: &PaneId) -> Option<PaneId> {
+        let Some(pane_geom) = self.get_pane_geom(pane_id) else {
+            return None;
+        };
+        let panes = self.panes.borrow();
+        let stacked_panes = StackedPanes::new(self.panes.clone());
+        let pane_geom = if pane_geom.is_stacked() {
+            stacked_panes
+                .position_and_size_of_stack(pane_id)
+                .unwrap_or(pane_geom)
+        } else {
+            pane_geom
+        };
+        panes.iter().find_map(|(candidate_pane_id, p)| {
+            if !p.selectable() {
+                return None;
+            }
+            let candidate_geom = p.current_geom();
+            let candidate_geom = if candidate_geom.is_stacked() {
+                stacked_panes
+                    .position_and_size_of_stack(candidate_pane_id)
+                    .unwrap_or(candidate_geom)
+            } else {
+                candidate_geom
+            };
+            if candidate_geom.y == pane_geom.y + pane_geom.rows.as_usize()
+                && candidate_geom.x == pane_geom.x
+                && candidate_geom.cols.as_usize() == pane_geom.cols.as_usize()
+            {
+                return Some(p.pid());
+            }
+            return None;
+        })
+    }
 }
 
 pub fn split(direction: SplitDirection, rect: &PaneGeom) -> Option<(PaneGeom, PaneGeom)> {
diff --git a/zellij-server/src/plugins/plugin_loader.rs b/zellij-server/src/plugins/plugin_loader.rs
index 4a79ffb1..56ae6786 100644
--- a/zellij-server/src/plugins/plugin_loader.rs
+++ b/zellij-server/src/plugins/plugin_loader.rs
@@ -638,6 +638,7 @@ impl<'a> PluginLoader<'a> {
             .filter_map(|export| export.clone().into_func().map(|_| export.name()))
         {
             if function_name.ends_with("_worker") {
+                let plugin_config = self.plugin.clone();
                 let (mut store, instance) =
                     self.create_plugin_instance_and_wasi_env_for_worker()?;
 
@@ -648,7 +649,7 @@ impl<'a> PluginLoader<'a> {
                     .call(&mut store, ())
                     .with_context(err_context)?;
 
-                let worker = RunningWorker::new(store, instance, &function_name);
+                let worker = RunningWorker::new(store, instance, &function_name, plugin_config);
                 let worker_sender = plugin_worker(worker);
                 workers.insert(function_name.into(), worker_sender);
             }
diff --git a/zellij-server/src/plugins/plugin_worker.rs b/zellij-server/src/plugins/plugin_worker.rs
index 635c8f50..3b630706 100644
--- a/zellij-server/src/plugins/plugin_worker.rs
+++ b/zellij-server/src/plugins/plugin_worker.rs
@@ -5,21 +5,29 @@ use wasmtime::{Instance, Store};
 use zellij_utils::async_channel::{unbounded, Receiver, Sender};
 use zellij_utils::async_std::task;
 use zellij_utils::errors::prelude::*;
+use zellij_utils::input::plugins::PluginConfig;
 use zellij_utils::plugin_api::message::ProtobufMessage;
 use zellij_utils::prost::Message;
 
 pub struct RunningWorker {
     pub instance: Instance,
     pub name: String,
+    pub plugin_config: PluginConfig,
     pub store: Store<PluginEnv>,
 }
 
 impl RunningWorker {
-    pub fn new(store: Store<PluginEnv>, instance: Instance, name: &str) -> Self {
+    pub fn new(
+        store: Store<PluginEnv>,
+        instance: Instance,
+        name: &str,
+        plugin_config: PluginConfig,
+    ) -> Self {
         RunningWorker {
             store,
             instance,
             name: name.into(),
+            plugin_config,
         }
     }
     pub fn send_message(&mut self, message: String, payload: String) -> Result<()> {
diff --git a/zellij-server/src/route.rs b/zellij-server/src/route.rs
index fbfe04d8..5832cb4d 100644
--- a/zellij-server/src/route.rs
+++ b/zellij-server/src/route.rs
@@ -1188,6 +1188,9 @@ pub(crate) fn route_thread_main(
                             let _ = to_server.send(ServerInstruction::DetachSession(client_id));
                             should_break = true;
                         },
+                        ClientToServerMsg::ListClients => {
+                            let _ = to_server.send(ServerInstruction::ActiveClients(client_id));
+                        },
                         ClientToServerMsg::ConfigWrittenToDisk(config) => {
                             let _ = to_server
                                 .send(ServerInstruction::ConfigWrittenToDisk(client_id, config));
diff --git a/zellij-server/src/tab/mod.rs b/zellij-server/src/tab/mod.rs
index 02c19987..26fcb81b 100644
--- a/zellij-server/src/tab/mod.rs
+++ b/zellij-server/src/tab/mod.rs
@@ -186,6 +186,7 @@ pub(crate) struct Tab {
     viewport: Rc<RefCell<Viewport>>, // includes all non-UI panes
     display_area: Rc<RefCell<Size>>, // includes all panes (including eg. the status bar and tab bar in the default layout)
     character_cell_size: Rc<RefCell<Option<SizeInPixels>>>,
+    stacked_resize: Rc<RefCell<bool>>,
     sixel_image_store: Rc<RefCell<SixelImageStore>>,
     os_api: Box<dyn ServerOsApi>,
     pub senders: ThreadSenders,
@@ -205,6 +206,7 @@ pub(crate) struct Tab {
     // it seems that optimization is possible using `active_panes`
     focus_pane_id: Option<PaneId>,
     copy_on_select: bool,
+    last_mouse_hold_position: Option<Position>,
     terminal_emulator_colors: Rc<RefCell<Palette>>,
     terminal_emulator_color_codes: Rc<RefCell<HashMap<usize, String>>>,
     pids_waiting_resize: HashSet<u32>, // u32 is the terminal_id
@@ -689,6 +691,7 @@ impl Tab {
             viewport,
             display_area,
             character_cell_size,
+            stacked_resize,
             sixel_image_store,
             synchronize_is_active: false,
             os_api,
@@ -706,6 +709,7 @@ impl Tab {
             clipboard_provider,
             focus_pane_id: None,
             copy_on_select: copy_options.copy_on_select,
+            last_mouse_hold_position: None,
             terminal_emulator_colors,
             terminal_emulator_color_codes,
             pids_waiting_resize: HashSet::new(),
@@ -3886,7 +3890,6 @@ impl Tab {
         Ok(())
     }
 
-    #[cfg(test)]
     pub fn handle_right_mouse_release(
         &mut self,
         position: &Position,
@@ -3896,6 +3899,7 @@ impl Tab {
             format!("failed to handle right mouse release at position {position:?} for client {client_id}")
         };
 
+        self.last_mouse_hold_position = None;
         let active_pane = self.get_active_pane_or_floating_pane_mut(client_id);
         if let Some(active_pane) = active_pane {
             let mut relative_position = active_pane.relative_position(position);
@@ -3919,7 +3923,6 @@ impl Tab {
         Ok(())
     }
 
-    #[cfg(test)]
     fn handle_middle_mouse_release(
         &mut self,
         position: &Position,
@@ -3929,6 +3932,7 @@ impl Tab {
             format!("failed to handle middle mouse release at position {position:?} for client {client_id}")
         };
 
+        self.last_mouse_hold_position = None;
         let active_pane = self.get_active_pane_or_floating_pane_mut(client_id);
         if let Some(active_pane) = active_pane {
             let mut relative_position = active_pane.relative_position(position);
diff --git a/zellij-server/src/tab/swap_layouts.rs b/zellij-server/src/tab/swap_layouts.rs
index 8ee9709d..ec009a59 100644
--- a/zellij-server/src/tab/swap_layouts.rs
+++ b/zellij-server/src/tab/swap_layouts.rs
@@ -64,6 +64,9 @@ impl SwapLayouts {
     pub fn reset_floating_damage(&mut self) {
         self.is_floating_damaged = false;
     }
+    pub fn reset_tiled_damage(&mut self) {
+        self.is_tiled_damaged = false;
+    }
     pub fn is_floating_damaged(&self) -> bool {
         self.is_floating_damaged
     }
@@ -277,4 +280,31 @@ impl SwapLayouts {
         }
         None
     }
+    pub fn best_effort_tiled_layout(
+        &mut self,
+        tiled_panes: &TiledPanes,
+    ) -> Option<TiledPaneLayout> {
+        for swap_layout in self.swap_tiled_layouts.iter() {
+            for (_constraint, layout) in swap_layout.0.iter() {
+                let focus_layout_if_not_focused = true;
+                let display_area = self.display_area.borrow();
+                // TODO: reuse the assets from position_panes_in_space here?
+                let pane_count = tiled_panes.visible_panes_count();
+                let display_area = PaneGeom::from(&*display_area);
+                if layout
+                    .position_panes_in_space(
+                        &display_area,
+                        Some(pane_count),
+                        false,
+                        focus_layout_if_not_focused,
+                    )
+                    .is_ok()
+                {
+                    return Some(layout.clone());
+                }
+            }
+        }
+        log::error!("Could not find layout that would fit on screen!");
+        None
+    }
 }
diff --git a/zellij-server/src/terminal_bytes.rs b/zellij-server/src/terminal_bytes.rs
index 9459e943..6b81a01b 100644
--- a/zellij-server/src/terminal_bytes.rs
+++ b/zellij-server/src/terminal_bytes.rs
@@ -82,13 +82,7 @@ impl TerminalBytes {
         let mut buf = [0u8; 65536];
         loop {
             match self.deadline_read(&mut buf).await {
-                // EOF
-                ReadResult::Ok(0) => break,
-                // Some error occured
-                ReadResult::Err(err) => {
-                    log::error!("{}", err);
-                    break;
-                },
+                ReadResult::Ok(0) | ReadResult::Err(_) => break, // EOF or error
                 ReadResult::Timeout => {
                     let time_to_send_render = self
                         .async_send_to_screen(ScreenInstruction::Render)
diff --git a/zellij-utils/src/errors.rs b/zellij-utils/src/errors.rs
index 9c419773..1d023722 100644
--- a/zellij-utils/src/errors.rs
+++ b/zellij-utils/src/errors.rs
@@ -450,6 +450,7 @@ pub enum ClientContext {
     ServerError,
     SwitchToMode,
     Connected,
+    ActiveClients,
     Log,
     LogError,
     OwnClientId,
@@ -476,6 +477,7 @@ pub enum ServerContext {
     DetachSession,
     AttachClient,
     ConnStatus,
+    ActiveClients,
     Log,
     LogError,
     SwitchSession,
diff --git a/zellij-utils/src/ipc.rs b/zellij-utils/src/ipc.rs
index 8725c88c..a9a40bf4 100644
--- a/zellij-utils/src/ipc.rs
+++ b/zellij-utils/src/ipc.rs
@@ -92,6 +92,7 @@ pub enum ClientToServerMsg {
     ClientExited,
     KillSession,
     ConnStatus,
+    ListClients,
     ConfigWrittenToDisk(Config),
     FailedToWriteConfigToDisk(Option<PathBuf>),
 }
@@ -103,6 +104,7 @@ pub enum ServerToClientMsg {
     UnblockInputThread,
     Exit(ExitReason),
     Connected,
+    ActiveClients(Vec<ClientId>),
     Log(Vec<String>),
     LogError(Vec<String>),
     SwitchSession(ConnectToSession),