chore(release): 1.19.0 [skip ci]

# [1.19.0](https://github.com/asepharyana/zesdex/compare/v1.18.4...v1.19.0) (2026-08-27)

### Features

* hapus fitur LSP bawaan (language server protocol) ([93f3c2a](https://github.com/asepharyana/zesdex/commit/93f3c2a3572511b5a84f244980ad71bd1b455e70))

CHANGELOG.md

@@ -1,3 +1,17 @@
+# [1.19.0](https://github.com/asepharyana/zesdex/compare/v1.18.4...v1.19.0) (2026-08-27)
+
+
+### Features
+
+* hapus fitur LSP bawaan (language server protocol) ([93f3c2a](https://github.com/asepharyana/zesdex/commit/93f3c2a3572511b5a84f244980ad71bd1b455e70))
+
+## [1.18.4](https://github.com/asepharyana/zesdex/compare/v1.18.3...v1.18.4) (2026-08-27)
+
+
+### Performance Improvements
+
+* **tui:** render streaming token secara inkremental + kurangi redraw sia-sia ([2717216](https://github.com/asepharyana/zesdex/commit/271721694beb62e9fa5ff932312b293aa1d56823))
+
 ## [1.18.3](https://github.com/asepharyana/zesdex/compare/v1.18.2...v1.18.3) (2026-08-27)
 
 

Cargo.lock

@@ -1088,15 +1088,6 @@ dependencies = [
  "miniz_oxide",
 ]
 
-[[package]]
-name = "fluent-uri"
-version = "0.1.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "17c704e9dbe1ddd863da1e6ff3567795087b1eb201ce80d8fa81162e1516500d"
-dependencies = [
- "bitflags 1.3.2",
-]
-
 [[package]]
 name = "fnv"
 version = "1.0.7"
@@ -1972,19 +1963,6 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "112b39cec0b298b6c1999fee3e31427f74f676e4cb9879ed1a121b43661a4154"
 
-[[package]]
-name = "lsp-types"
-version = "0.97.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53353550a17c04ac46c585feb189c2db82154fc84b79c7a66c96c2c644f66071"
-dependencies = [
- "bitflags 1.3.2",
- "fluent-uri",
- "serde",
- "serde_json",
- "serde_repr",
-]
-
 [[package]]
 name = "mac_address"
 version = "1.1.8"
@@ -3369,17 +3347,6 @@ dependencies = [
  "serde_core",
 ]
 
-[[package]]
-name = "serde_repr"
-version = "0.1.20"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "175ee3e80ae9982737ca543e96133087cbd9a485eecc3bc4de9c1a37b47ea59c"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 2.0.118",
-]
-
 [[package]]
 name = "serde_urlencoded"
 version = "0.7.1"
@@ -4895,7 +4862,7 @@ dependencies = [
 
 [[package]]
 name = "zesdex-api"
-version = "1.18.2"
+version = "1.18.3"
 dependencies = [
  "anyhow",
  "argon2",
@@ -4918,7 +4885,7 @@ dependencies = [
 
 [[package]]
 name = "zesdex-application"
-version = "1.18.2"
+version = "1.18.3"
 dependencies = [
  "anyhow",
  "base64",
@@ -4935,7 +4902,7 @@ dependencies = [
 
 [[package]]
 name = "zesdex-bootstrap"
-version = "1.18.2"
+version = "1.18.3"
 dependencies = [
  "anyhow",
  "chrono",
@@ -4952,7 +4919,7 @@ dependencies = [
 
 [[package]]
 name = "zesdex-daemon"
-version = "1.18.2"
+version = "1.18.3"
 dependencies = [
  "anyhow",
  "base64",
@@ -4976,7 +4943,7 @@ dependencies = [
 
 [[package]]
 name = "zesdex-domain"
-version = "1.18.2"
+version = "1.18.3"
 dependencies = [
  "anyhow",
  "base64",
@@ -4992,7 +4959,7 @@ dependencies = [
 
 [[package]]
 name = "zesdex-gateway"
-version = "1.18.2"
+version = "1.18.3"
 dependencies = [
  "anyhow",
  "axum",
@@ -5019,7 +4986,7 @@ dependencies = [
 
 [[package]]
 name = "zesdex-grpc"
-version = "1.18.2"
+version = "1.18.3"
 dependencies = [
  "anyhow",
  "axum",
@@ -5036,7 +5003,7 @@ dependencies = [
 
 [[package]]
 name = "zesdex-infrastructure"
-version = "1.18.2"
+version = "1.18.3"
 dependencies = [
  "anyhow",
  "argon2",
@@ -5055,7 +5022,6 @@ dependencies = [
  "infer",
  "jsonwebtoken",
  "libc",
- "lsp-types",
  "nucleo-matcher",
  "percent-encoding",
  "pulldown-cmark",
@@ -5085,7 +5051,7 @@ dependencies = [
 
 [[package]]
 name = "zesdex-tui"
-version = "1.18.2"
+version = "1.18.3"
 dependencies = [
  "anyhow",
  "base64",
@@ -5111,7 +5077,7 @@ dependencies = [
 
 [[package]]
 name = "zesdex-web"
-version = "1.18.2"
+version = "1.18.3"
 dependencies = [
  "anyhow",
  "axum",
@@ -5131,7 +5097,7 @@ dependencies = [
 
 [[package]]
 name = "zesdex-ws"
-version = "1.18.2"
+version = "1.18.3"
 dependencies = [
  "anyhow",
  "axum",

Cargo.toml

@@ -15,7 +15,7 @@ members = [
 ]
 
 [workspace.package]
-version = "1.18.3"
+version = "1.19.0"
 edition = "2021"
 authors = ["asepharyana <superaseph@gmail.com>"]
 
@@ -61,7 +61,6 @@ ignore = "0.4"
 nucleo-matcher = "0.3"
 futures-util = "0.3"
 rmcp = { version = "2.2", default-features = false, features = ["client", "transport-child-process", "transport-streamable-http-client-reqwest", "macros"] }
-lsp-types = "0.97"
 tiktoken-rs = "0.12"
 similar = "3"
 syntect = { version = "5", default-features = false, features = ["default-fancy"] }

apps/domain/src/cms/commands.rs

@@ -46,10 +46,6 @@ pub struct SettingsPatch {
     pub review_enabled: Option<bool>,
     /// Override the session-archive-enabled flag.
     pub session_archive_enabled: Option<bool>,
-    /// Override the LSP auto-provision flag.
-    pub lsp_auto_provision: Option<bool>,
-    /// Override the list of LSP-managed languages.
-    pub lsp_languages: Option<Vec<String>>,
     /// Override the hive-mind node timeout in milliseconds.
     pub hive_mind_node_timeout_ms: Option<u64>,
 }
@@ -111,12 +107,6 @@ impl SettingsPatch {
         if let Some(val) = self.session_archive_enabled {
             settings.flags.session_archive_enabled = val;
         }
-        if let Some(val) = self.lsp_auto_provision {
-            settings.flags.lsp_auto_provision = val;
-        }
-        if let Some(ref val) = self.lsp_languages {
-            settings.lsp_languages = val.clone();
-        }
         if let Some(val) = self.hive_mind_node_timeout_ms {
             settings.hive_mind_node_timeout_ms = val;
         }

apps/domain/src/cms/settings.rs

@@ -18,7 +18,6 @@
 //! - `workflow_max_concurrency` — max parallel hive-mind nodes
 //! - `hive_mind_node_timeout_ms` — per-node timeout for hive-mind orchestration
 //! - `flags` — grouped boolean feature toggles
-//! - `lsp_languages` — list of language IDs for LSP auto-provisioning
 
 use std::collections::HashMap;
 
@@ -49,12 +48,10 @@ pub enum InternetMode {
 /// ## Fields
 /// - `review_enabled` — enable automatic inline review after edits
 /// - `session_archive_enabled` — enable periodic session archiving
-/// - `lsp_auto_provision` — auto-provision LSP language servers on project open
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct SettingsFlags {
     pub review_enabled: bool,
     pub session_archive_enabled: bool,
-    pub lsp_auto_provision: bool,
 }
 
 impl Default for SettingsFlags {
@@ -63,7 +60,6 @@ impl Default for SettingsFlags {
         Self {
             review_enabled: true,
             session_archive_enabled: true,
-            lsp_auto_provision: true,
         }
     }
 }
@@ -93,7 +89,6 @@ pub struct Settings {
     pub workflow_max_concurrency: usize,
     #[serde(flatten)]
     pub flags: SettingsFlags,
-    pub lsp_languages: Vec<String>,
     #[serde(default = "default_hive_mind_node_timeout_ms")]
     pub hive_mind_node_timeout_ms: u64,
 }
@@ -113,7 +108,6 @@ impl Default for Settings {
             verify_timeout_ms: 30_000,
             workflow_max_concurrency: 5,
             flags: SettingsFlags::default(),
-            lsp_languages: Vec::new(),
             hive_mind_node_timeout_ms: 600_000,
         }
     }

apps/domain/src/subagent/mod.rs

@@ -10,6 +10,6 @@ pub enum AccessTier {
     Read,
     /// Read + Write: above plus write, edit, delete, git, memory.
     Write,
-    /// Full: above plus bash, shell, LSP, workflow, plan tools.
+    /// Full: above plus bash, shell, workflow, plan tools.
     Full,
 }

apps/infrastructure/Cargo.toml

@@ -32,7 +32,6 @@ ignore.workspace = true
 nucleo-matcher.workspace = true
 futures-util.workspace = true
 rmcp.workspace = true
-lsp-types.workspace = true
 tiktoken-rs.workspace = true
 similar.workspace = true
 syntect.workspace = true

apps/infrastructure/src/best_practice/arch_audit.rs

@@ -125,7 +125,6 @@ fn forbidden_imports(layer: &str) -> &'static [&'static str] {
             "argon2",
             "jsonwebtoken",
             "rmcp",
-            "lsp_types",
             "tiktoken_rs",
             "syntect",
             "pulldown_cmark",

apps/infrastructure/src/lib.rs

@@ -15,7 +15,6 @@
 //! ├── auth/               — JWT, Argon2, OAuth loopback
 //! ├── llm/                — LLM provider HTTP client
 //! ├── ipc/                — Unix-socket IPC protocol
-//! ├── lsp/                — Native LSP client + provisioner
 //! ├── mcp/                — Model Context Protocol bridge
 //! ├── bgbash/             — Background bash job management
 //! ├── tools/              — All 37 agent-invocable tools
@@ -32,7 +31,6 @@ pub mod bgbash;
 pub mod guard;
 pub mod ipc;
 pub mod llm;
-pub mod lsp;
 pub mod mcp;
 pub mod middleware;
 pub mod persistence;

apps/infrastructure/src/lsp/client.rs

@@ -1,132 +0,0 @@
-//! LSP client — sends JSON-RPC requests to language servers.
-
-use anyhow::Result;
-use serde_json::Value;
-use std::io::{BufRead, BufReader, Read, Write};
-use std::process::{Child, ChildStdin, ChildStdout, Command, Stdio};
-use std::sync::Mutex;
-use tracing::{debug, info};
-
-/// Mutable inner state of an LSP client, protected by a mutex so that
-/// `send_request` and `shutdown` can be called via `&self` (required by
-/// [`LspManager`](super::manager::LspManager)).
-struct LspClientInner {
-    process: Child,
-    stdin: ChildStdin,
-    stdout: BufReader<ChildStdout>,
-    request_id: u64,
-}
-
-/// A minimal but functional LSP client.
-pub struct LspClient {
-    inner: Mutex<LspClientInner>,
-}
-
-impl LspClient {
-    /// Spawn a language server process.
-    pub fn start(command: &str, args: &[String]) -> Result<Self> {
-        let mut child = Command::new(command)
-            .args(args)
-            .stdin(Stdio::piped())
-            .stdout(Stdio::piped())
-            .stderr(Stdio::piped())
-            .spawn()?;
-
-        let stdin = child
-            .stdin
-            .take()
-            .ok_or_else(|| anyhow::anyhow!("no stdin on LSP process"))?;
-        let stdout = BufReader::new(
-            child
-                .stdout
-                .take()
-                .ok_or_else(|| anyhow::anyhow!("no stdout on LSP process"))?,
-        );
-
-        info!("LSP client spawned: {command}");
-        Ok(LspClient {
-            inner: Mutex::new(LspClientInner {
-                process: child,
-                stdin,
-                stdout,
-                request_id: 0,
-            }),
-        })
-    }
-
-    /// Send a JSON-RPC request and read the response.
-    pub fn send_request(&self, method: &str, params: &Value) -> Result<Value> {
-        let mut inner = match self.inner.lock() {
-            Ok(g) => g,
-            Err(poisoned) => {
-                tracing::error!("LSP client mutex poisoned, recovering");
-                poisoned.into_inner()
-            }
-        };
-        inner.request_id += 1;
-        let request = serde_json::json!({
-            "jsonrpc": "2.0",
-            "id": inner.request_id,
-            "method": method,
-            "params": params.clone(),
-        });
-
-        // Write Content-Length header + body
-        let body = serde_json::to_string(&request)?;
-        let header = format!("Content-Length: {}\r\n\r\n", body.len());
-        inner.stdin.write_all(header.as_bytes())?;
-        inner.stdin.write_all(body.as_bytes())?;
-        inner.stdin.flush()?;
-
-        debug!("LSP request: {method} (id={})", inner.request_id);
-
-        // Read Content-Length header
-        let mut content_length = 0usize;
-        loop {
-            let mut line = String::new();
-            inner.stdout.read_line(&mut line)?;
-            let trimmed = line.trim();
-            if trimmed.is_empty() {
-                break; // end of headers
-            }
-            if let Some(len_str) = trimmed.strip_prefix("Content-Length: ") {
-                content_length = len_str.parse::<usize>()?;
-            }
-        }
-
-        // Read the JSON body
-        let mut buf = vec![0u8; content_length];
-        inner.stdout.read_exact(&mut buf)?;
-        let response: Value = serde_json::from_slice(&buf)?;
-
-        debug!("LSP response for {method}: response received");
-        Ok(response)
-    }
-
-    /// Gracefully shut down the server.
-    pub fn shutdown(&self) -> Result<()> {
-        let null = Value::Null;
-        if let Err(e) = self.send_request("shutdown", &null) {
-            tracing::warn!("LSP shutdown error: {e}");
-        }
-        if let Err(e) = self.send_request("exit", &null) {
-            tracing::warn!("LSP exit error: {e}");
-        }
-        if let Ok(mut inner) = self.inner.lock() {
-            let _ = inner.process.wait();
-        }
-        info!("LSP client shut down");
-        Ok(())
-    }
-}
-
-impl Drop for LspClient {
-    fn drop(&mut self) {
-        if let Ok(mut inner) = self.inner.lock() {
-            if let Err(e) = inner.process.kill() {
-                tracing::warn!("LSP process kill error: {e}");
-            }
-            let _ = inner.process.wait();
-        }
-    }
-}

apps/infrastructure/src/lsp/manager.rs

@@ -1,55 +0,0 @@
-//! Manages multiple LSP server processes, keyed by language ID.
-//!
-//! Each language (e.g. "rust", "python") maps to one `LspClient`.
-//! The manager provides a unified `request` method that dispatches
-//! to the correct client by language.
-
-use std::collections::HashMap;
-
-use super::client::LspClient;
-
-/// Manages one `LspClient` per language.
-pub struct LspManager {
-    clients: HashMap<String, LspClient>,
-}
-
-impl LspManager {
-    pub fn new() -> Self {
-        LspManager {
-            clients: HashMap::new(),
-        }
-    }
-}
-
-impl Default for LspManager {
-    fn default() -> Self {
-        Self::new()
-    }
-}
-
-impl LspManager {
-    pub fn start(&mut self, language: &str, command: &str, args: &[String]) -> anyhow::Result<()> {
-        let client = LspClient::start(command, args)?;
-        self.clients.insert(language.to_string(), client);
-        Ok(())
-    }
-
-    pub fn get_client(&self, language: &str) -> Option<&LspClient> {
-        self.clients.get(language)
-    }
-
-    pub fn shutdown_all(&mut self) {
-        for client in self.clients.values() {
-            let _ = client.shutdown();
-        }
-        self.clients.clear();
-    }
-
-    pub fn languages(&self) -> Vec<String> {
-        self.clients.keys().cloned().collect()
-    }
-
-    pub fn is_empty(&self) -> bool {
-        self.clients.is_empty()
-    }
-}

apps/infrastructure/src/lsp/mod.rs

@@ -1,6 +0,0 @@
-//! Native LSP client integration — manage language server processes and
-//! dispatch requests for completion, hover, diagnostics, etc.
-
-pub mod client;
-pub mod manager;
-pub mod provisioner;

apps/infrastructure/src/lsp/provisioner/config.rs

@@ -1,16 +0,0 @@
-//! Configuration for LSP language server provisioning.
-
-use serde::{Deserialize, Serialize};
-
-/// Describes how to provision a language server for a given language.
-#[derive(Debug, Clone, Serialize, Deserialize)]
-pub struct LspProvisionerConfig {
-    /// Language identifier, e.g. "rust", "python".
-    pub language: String,
-    /// The command to start the language server.
-    pub command: String,
-    /// Arguments for the command.
-    pub args: Vec<String>,
-    /// How to install the language server (if not found).
-    pub install_hint: Option<String>,
-}

apps/infrastructure/src/lsp/provisioner/discovery.rs

@@ -1,54 +0,0 @@
-//! Discovers installed language servers on the system PATH.
-
-use std::collections::HashMap;
-
-use super::config::LspProvisionerConfig;
-
-/// Known language server configurations keyed by language.
-fn known_configs() -> HashMap<&'static str, (&'static str, Vec<&'static str>)> {
-    let mut m = HashMap::new();
-    m.insert("rust", ("rust-analyzer", vec![]));
-    m.insert("python", ("pyright-langserver", vec!["--stdio"]));
-    m.insert(
-        "typescript",
-        ("typescript-language-server", vec!["--stdio"]),
-    );
-    m.insert(
-        "javascript",
-        ("typescript-language-server", vec!["--stdio"]),
-    );
-    m.insert("go", ("gopls", vec![]));
-    m
-}
-
-/// Check if a command is available on PATH.
-fn command_exists(cmd: &str) -> bool {
-    std::env::var_os("PATH")
-        .and_then(|path| {
-            std::env::split_paths(&path).find_map(|dir| {
-                let full_path = dir.join(cmd);
-                if full_path.is_file() {
-                    Some(())
-                } else {
-                    None
-                }
-            })
-        })
-        .is_some()
-}
-
-/// Discover which language servers are already on PATH.
-pub fn discover_installed() -> Vec<LspProvisionerConfig> {
-    let mut configs = Vec::new();
-    for (lang, (cmd, args)) in known_configs() {
-        if command_exists(cmd) {
-            configs.push(LspProvisionerConfig {
-                language: lang.to_string(),
-                command: cmd.to_string(),
-                args: args.iter().map(|s| s.to_string()).collect(),
-                install_hint: None,
-            });
-        }
-    }
-    configs
-}

apps/infrastructure/src/lsp/provisioner/install.rs

@@ -1,38 +0,0 @@
-//! Installs language servers (non-interactive, via package managers or
-//! direct download).
-
-/// Install a language server for the given language.
-///
-/// Returns a success message or an error describing why installation failed.
-pub fn install_language_server(language: &str) -> anyhow::Result<String> {
-    match language {
-        "rust" => {
-            // rust-analyzer is typically installed via rustup
-            let output = std::process::Command::new("rustup")
-                .args(["component", "add", "rust-analyzer"])
-                .output()?;
-            if output.status.success() {
-                Ok("rust-analyzer installed via rustup".to_string())
-            } else {
-                anyhow::bail!(
-                    "failed to install rust-analyzer: {}",
-                    String::from_utf8_lossy(&output.stderr)
-                )
-            }
-        }
-        "python" => {
-            let output = std::process::Command::new("npm")
-                .args(["install", "-g", "pyright"])
-                .output()?;
-            if output.status.success() {
-                Ok("pyright installed via npm".to_string())
-            } else {
-                anyhow::bail!(
-                    "failed to install pyright: {}",
-                    String::from_utf8_lossy(&output.stderr)
-                )
-            }
-        }
-        lang => anyhow::bail!("no install method known for language '{lang}'"),
-    }
-}

apps/infrastructure/src/lsp/provisioner/manager.rs

@@ -1,46 +0,0 @@
-//! High-level manager that discovers, installs (if needed), and starts
-//! LSP servers.
-
-use super::discovery::discover_installed;
-use super::install::install_language_server;
-use crate::lsp::manager::LspManager;
-
-/// Auto-provision language servers for the given list of languages.
-///
-/// Flow: discover already-installed servers → for each requested language
-/// not yet available, attempt auto-install → start each server.
-pub fn auto_provision(lsp_manager: &mut LspManager, languages: &[String]) -> Vec<String> {
-    let mut started = Vec::new();
-    let installed = discover_installed();
-    let mut installed_map: std::collections::HashMap<
-        &str,
-        &crate::lsp::provisioner::config::LspProvisionerConfig,
-    > = std::collections::HashMap::new();
-    for cfg in &installed {
-        installed_map.insert(cfg.language.as_str(), cfg);
-    }
-
-    for lang in languages {
-        if let Some(cfg) = installed_map.get(lang.as_str()) {
-            if lsp_manager.start(lang, &cfg.command, &cfg.args).is_ok() {
-                started.push(lang.clone());
-            }
-        } else {
-            // Not installed — try auto-install
-            if install_language_server(lang).is_ok() {
-                // Re-discover after install
-                let refreshed = discover_installed();
-                for cfg in refreshed {
-                    if cfg.language == *lang {
-                        if lsp_manager.start(lang, &cfg.command, &cfg.args).is_ok() {
-                            started.push(lang.clone());
-                        }
-                        break;
-                    }
-                }
-            }
-        }
-    }
-
-    started
-}

apps/infrastructure/src/lsp/provisioner/mod.rs

@@ -1,7 +0,0 @@
-//! LSP language server provisioner — discovers, installs, and manages
-//! language server executables.
-
-pub mod config;
-pub mod discovery;
-pub mod install;
-pub mod manager;

apps/infrastructure/src/subagent/division.rs

@@ -63,13 +63,6 @@ pub fn tools_for(access: &AccessTier) -> Vec<Box<dyn Tool>> {
                         | "plan_enter"
                         | "plan_ready"
                         | "sequential_think"
-                        | "lsp_connect"
-                        | "lsp_disconnect"
-                        | "lsp_hover"
-                        | "lsp_completion"
-                        | "lsp_definition"
-                        | "lsp_references"
-                        | "lsp_diagnostics"
                 )
             })
             .collect(),

apps/infrastructure/src/tools/context.rs

@@ -16,7 +16,6 @@ pub struct ToolCtx {
     pub mention_index: crate::MentionIndex,
     pub origin: crate::Origin,
     pub graduated_checks: Vec<crate::tools::GraduatedCheck>,
-    pub lsp_manager: Arc<Mutex<crate::lsp::manager::LspManager>>,
     pub turn_events: Option<Arc<Mutex<std::collections::VecDeque<crate::TurnEvent>>>>,
     pub workflow_findings: Option<Arc<Mutex<Vec<String>>>>,
     pub abort_flag: Option<Arc<AtomicBool>>,
@@ -39,7 +38,6 @@ pub struct ToolCtxBuilder {
     pub mention_index: crate::MentionIndex,
     pub origin: crate::Origin,
     pub graduated_checks: Vec<crate::tools::GraduatedCheck>,
-    pub lsp_manager: Arc<Mutex<crate::lsp::manager::LspManager>>,
     pub turn_events: Option<Arc<Mutex<std::collections::VecDeque<crate::TurnEvent>>>>,
     pub workflow_findings: Option<Arc<Mutex<Vec<String>>>>,
     pub abort_flag: Option<Arc<AtomicBool>>,
@@ -56,7 +54,6 @@ impl Default for ToolCtxBuilder {
             mention_index: crate::MentionIndex::new(),
             origin: crate::Origin::Main,
             graduated_checks: Vec::new(),
-            lsp_manager: Arc::new(Mutex::new(crate::lsp::manager::LspManager::new())),
             turn_events: None,
             workflow_findings: None,
             abort_flag: None,
@@ -98,7 +95,6 @@ impl ToolCtxBuilder {
             mention_index: self.mention_index,
             origin: self.origin,
             graduated_checks: self.graduated_checks,
-            lsp_manager: self.lsp_manager,
             turn_events: self.turn_events,
             workflow_findings: self.workflow_findings,
             abort_flag: self.abort_flag,

apps/infrastructure/src/tools/lsp/completion.rs

@@ -1,80 +0,0 @@
-//! Get completion suggestions from LSP.
-//!
-//! Sends a `textDocument/completion` request to the connected language
-//! server for a given file position.
-
-use crate::tools::{Tool, ToolCtx};
-use anyhow::Result;
-use serde_json::{json, Value};
-use tracing::{error, info, instrument};
-
-/// Tool that requests code completion suggestions from an LSP server.
-///
-/// Flow: parse language/path/line/character → lock LSP manager → find client
-/// → send `textDocument/completion` → return pretty-printed JSON response.
-pub struct LspCompletion;
-
-impl Tool for LspCompletion {
-    fn name(&self) -> &'static str {
-        "lsp_completion"
-    }
-
-    fn description(&self) -> &'static str {
-        "Get completion suggestions at a position"
-    }
-
-    fn parameters(&self) -> Value {
-        json!({
-            "type": "object",
-            "properties": {
-                "language": {
-                    "type": "string",
-                    "description": "Language identifier"
-                },
-                "path": {
-                    "type": "string",
-                    "description": "File path"
-                },
-                "line": {
-                    "type": "integer",
-                    "description": "Line number (0-based)"
-                },
-                "character": {
-                    "type": "integer",
-                    "description": "Character offset (0-based)"
-                }
-            },
-            "required": ["language", "path", "line", "character"]
-        })
-    }
-
-    #[instrument(skip(self, ctx, args))]
-    fn run(&self, ctx: &ToolCtx, args: &Value) -> Result<String> {
-        let language = crate::tools::arg_str(args, "language")?;
-        let path = crate::tools::arg_str(args, "path")?;
-        let line = args.get("line").and_then(|v| v.as_i64()).unwrap_or(0);
-        let character = args.get("character").and_then(|v| v.as_i64()).unwrap_or(0);
-
-        info!(language, path, line, character, "LSP completion requested");
-
-        let manager = match ctx.lsp_manager.lock() {
-            Ok(g) => g,
-            Err(poisoned) => {
-                error!("LSP manager mutex poisoned, recovering");
-                poisoned.into_inner()
-            }
-        };
-        if let Some(client) = manager.get_client(&language) {
-            let result = client.send_request(
-                "textDocument/completion",
-                &json!({
-                    "textDocument": { "uri": format!("file://{}", path) },
-                    "position": { "line": line, "character": character }
-                }),
-            )?;
-            Ok(serde_json::to_string_pretty(&result)?)
-        } else {
-            anyhow::bail!("no LSP client connected for '{language}'")
-        }
-    }
-}

apps/infrastructure/src/tools/lsp/connect.rs

@@ -1,76 +0,0 @@
-//! Connect to an LSP language server.
-//!
-//! Starts a new language server process and registers it in the
-//! shared LSP manager for subsequent tool invocations.
-
-use crate::tools::{Tool, ToolCtx};
-use anyhow::Result;
-use serde_json::{json, Value};
-use tracing::{error, info, instrument};
-
-/// Tool that connects to an LSP language server for a given language.
-///
-/// Flow: parse language + command + args → lock LSP manager → call
-/// `manager.start()` → confirm connection in the response string.
-pub struct LspConnect;
-
-impl Tool for LspConnect {
-    fn name(&self) -> &'static str {
-        "lsp_connect"
-    }
-
-    fn description(&self) -> &'static str {
-        "Connect to an LSP language server for a given language"
-    }
-
-    fn parameters(&self) -> Value {
-        json!({
-            "type": "object",
-            "properties": {
-                "language": {
-                    "type": "string",
-                    "description": "Language identifier (e.g. 'rust', 'python')"
-                },
-                "command": {
-                    "type": "string",
-                    "description": "Command to start the language server"
-                },
-                "args": {
-                    "type": "array",
-                    "items": {"type": "string"},
-                    "description": "Arguments for the language server command"
-                }
-            },
-            "required": ["language", "command"]
-        })
-    }
-
-    #[instrument(skip(self, ctx, args))]
-    fn run(&self, ctx: &ToolCtx, args: &Value) -> Result<String> {
-        let language = crate::tools::arg_str(args, "language")?;
-        let command = crate::tools::arg_str(args, "command")?;
-        let extra_args: Vec<String> = args
-            .get("args")
-            .and_then(|v| v.as_array())
-            .map(|arr| {
-                arr.iter()
-                    .filter_map(|v| v.as_str().map(String::from))
-                    .collect()
-            })
-            .unwrap_or_default();
-
-        info!(language, command, extra_args = ?extra_args, "LSP connect requested");
-
-        let mut manager = match ctx.lsp_manager.lock() {
-            Ok(g) => g,
-            Err(poisoned) => {
-                error!("LSP manager mutex poisoned, recovering");
-                poisoned.into_inner()
-            }
-        };
-        manager.start(&language, &command, &extra_args)?;
-
-        info!(language, "LSP connected successfully");
-        Ok(format!("Connected LSP for '{language}'"))
-    }
-}

apps/infrastructure/src/tools/lsp/definition.rs

@@ -1,81 +0,0 @@
-//! Go-to-definition via LSP.
-//!
-//! Sends a `textDocument/definition` request to the connected language
-//! server for a symbol at a given file position.
-
-use crate::tools::{Tool, ToolCtx};
-use anyhow::Result;
-use serde_json::{json, Value};
-use tracing::{error, info, instrument};
-
-/// Tool that resolves a symbol's definition location via LSP.
-///
-/// Flow: parse language/path/line/character → lock LSP manager → find client
-/// → send `textDocument/definition` → return pretty-printed JSON response
-/// containing the target URI and range.
-pub struct LspDefinition;
-
-impl Tool for LspDefinition {
-    fn name(&self) -> &'static str {
-        "lsp_definition"
-    }
-
-    fn description(&self) -> &'static str {
-        "Go to definition for a symbol at a position"
-    }
-
-    fn parameters(&self) -> Value {
-        json!({
-            "type": "object",
-            "properties": {
-                "language": {
-                    "type": "string",
-                    "description": "Language identifier"
-                },
-                "path": {
-                    "type": "string",
-                    "description": "File path"
-                },
-                "line": {
-                    "type": "integer",
-                    "description": "Line number (0-based)"
-                },
-                "character": {
-                    "type": "integer",
-                    "description": "Character offset (0-based)"
-                }
-            },
-            "required": ["language", "path", "line", "character"]
-        })
-    }
-
-    #[instrument(skip(self, ctx, args))]
-    fn run(&self, ctx: &ToolCtx, args: &Value) -> Result<String> {
-        let language = crate::tools::arg_str(args, "language")?;
-        let path = crate::tools::arg_str(args, "path")?;
-        let line = args.get("line").and_then(|v| v.as_i64()).unwrap_or(0);
-        let character = args.get("character").and_then(|v| v.as_i64()).unwrap_or(0);
-
-        info!(language, path, line, character, "LSP definition requested");
-
-        let manager = match ctx.lsp_manager.lock() {
-            Ok(g) => g,
-            Err(poisoned) => {
-                error!("LSP manager mutex poisoned, recovering");
-                poisoned.into_inner()
-            }
-        };
-        if let Some(client) = manager.get_client(&language) {
-            let result = client.send_request(
-                "textDocument/definition",
-                &json!({
-                    "textDocument": { "uri": format!("file://{}", path) },
-                    "position": { "line": line, "character": character }
-                }),
-            )?;
-            Ok(serde_json::to_string_pretty(&result)?)
-        } else {
-            anyhow::bail!("no LSP client connected for '{language}'")
-        }
-    }
-}

apps/infrastructure/src/tools/lsp/diagnostics.rs

@@ -1,70 +0,0 @@
-//! Get diagnostics from LSP.
-//!
-//! Sends a `textDocument/diagnostic` request to the connected language
-//! server for a given file and returns errors, warnings, and other
-//! diagnostics.
-
-use crate::tools::{Tool, ToolCtx};
-use anyhow::Result;
-use serde_json::{json, Value};
-use tracing::{error, info, instrument};
-
-/// Tool that retrieves diagnostics (errors, warnings) from the LSP for a file.
-///
-/// Flow: parse language/path → lock LSP manager → find client
-/// → send `textDocument/diagnostic` → return pretty-printed JSON response.
-pub struct LspDiagnostics;
-
-impl Tool for LspDiagnostics {
-    fn name(&self) -> &'static str {
-        "lsp_diagnostics"
-    }
-
-    fn description(&self) -> &'static str {
-        "Get diagnostics (errors, warnings) from the LSP for a file"
-    }
-
-    fn parameters(&self) -> Value {
-        json!({
-            "type": "object",
-            "properties": {
-                "language": {
-                    "type": "string",
-                    "description": "Language identifier"
-                },
-                "path": {
-                    "type": "string",
-                    "description": "File path to get diagnostics for"
-                }
-            },
-            "required": ["language", "path"]
-        })
-    }
-
-    #[instrument(skip(self, ctx, args))]
-    fn run(&self, ctx: &ToolCtx, args: &Value) -> Result<String> {
-        let language = crate::tools::arg_str(args, "language")?;
-        let path = crate::tools::arg_str(args, "path")?;
-
-        info!(language, path, "LSP diagnostics requested");
-
-        let manager = match ctx.lsp_manager.lock() {
-            Ok(g) => g,
-            Err(poisoned) => {
-                error!("LSP manager mutex poisoned, recovering");
-                poisoned.into_inner()
-            }
-        };
-        if let Some(client) = manager.get_client(&language) {
-            let result = client.send_request(
-                "textDocument/diagnostic",
-                &json!({
-                    "textDocument": { "uri": format!("file://{}", path) }
-                }),
-            )?;
-            Ok(serde_json::to_string_pretty(&result)?)
-        } else {
-            anyhow::bail!("no LSP client connected for '{language}'")
-        }
-    }
-}

apps/infrastructure/src/tools/lsp/disconnect.rs

@@ -1,54 +0,0 @@
-//! Disconnect from an LSP language server.
-//!
-//! Removes the registered LSP client for a given language from
-//! the shared LSP manager.
-
-use crate::tools::{Tool, ToolCtx};
-use anyhow::Result;
-use serde_json::{json, Value};
-use tracing::{error, info, instrument};
-
-/// Tool that disconnects an LSP language server for a given language.
-///
-/// Flow: parse language → lock LSP manager → remove the client
-/// for that language from the manager's registry.
-pub struct LspDisconnect;
-
-impl Tool for LspDisconnect {
-    fn name(&self) -> &'static str {
-        "lsp_disconnect"
-    }
-
-    fn description(&self) -> &'static str {
-        "Disconnect from an LSP language server"
-    }
-
-    fn parameters(&self) -> Value {
-        json!({
-            "type": "object",
-            "properties": {
-                "language": {
-                    "type": "string",
-                    "description": "Language identifier to disconnect"
-                }
-            },
-            "required": ["language"]
-        })
-    }
-
-    #[instrument(skip(self, ctx, args))]
-    fn run(&self, ctx: &ToolCtx, args: &Value) -> Result<String> {
-        let language = crate::tools::arg_str(args, "language")?;
-        info!(language, "LSP disconnect requested");
-
-        let _manager = match ctx.lsp_manager.lock() {
-            Ok(g) => g,
-            Err(poisoned) => {
-                error!("LSP manager mutex poisoned, recovering");
-                poisoned.into_inner()
-            }
-        };
-        info!(language, "LSP disconnected");
-        Ok(format!("Disconnected LSP for '{language}'"))
-    }
-}

apps/infrastructure/src/tools/lsp/hover.rs

@@ -1,81 +0,0 @@
-//! Get hover information from LSP.
-//!
-//! Sends a `textDocument/hover` request to the connected language
-//! server for a symbol at a given file position.
-
-use crate::tools::{Tool, ToolCtx};
-use anyhow::Result;
-use serde_json::{json, Value};
-use tracing::{error, info, instrument};
-
-/// Tool that retrieves hover information for a symbol at a position via LSP.
-///
-/// Flow: parse language/path/line/character → lock LSP manager → find client
-/// → send `textDocument/hover` → return pretty-printed JSON response
-/// containing the hover contents and range.
-pub struct LspHover;
-
-impl Tool for LspHover {
-    fn name(&self) -> &'static str {
-        "lsp_hover"
-    }
-
-    fn description(&self) -> &'static str {
-        "Get hover information for a symbol at a position"
-    }
-
-    fn parameters(&self) -> Value {
-        json!({
-            "type": "object",
-            "properties": {
-                "language": {
-                    "type": "string",
-                    "description": "Language identifier"
-                },
-                "path": {
-                    "type": "string",
-                    "description": "File path"
-                },
-                "line": {
-                    "type": "integer",
-                    "description": "Line number (0-based)"
-                },
-                "character": {
-                    "type": "integer",
-                    "description": "Character offset (0-based)"
-                }
-            },
-            "required": ["language", "path", "line", "character"]
-        })
-    }
-
-    #[instrument(skip(self, ctx, args))]
-    fn run(&self, ctx: &ToolCtx, args: &Value) -> Result<String> {
-        let language = crate::tools::arg_str(args, "language")?;
-        let path = crate::tools::arg_str(args, "path")?;
-        let line = args.get("line").and_then(|v| v.as_i64()).unwrap_or(0);
-        let character = args.get("character").and_then(|v| v.as_i64()).unwrap_or(0);
-
-        info!(language, path, line, character, "LSP hover requested");
-
-        let manager = match ctx.lsp_manager.lock() {
-            Ok(g) => g,
-            Err(poisoned) => {
-                error!("LSP manager mutex poisoned, recovering");
-                poisoned.into_inner()
-            }
-        };
-        if let Some(client) = manager.get_client(&language) {
-            let result = client.send_request(
-                "textDocument/hover",
-                &json!({
-                    "textDocument": { "uri": format!("file://{}", path) },
-                    "position": { "line": line, "character": character }
-                }),
-            )?;
-            Ok(serde_json::to_string_pretty(&result)?)
-        } else {
-            anyhow::bail!("no LSP client connected for '{language}'")
-        }
-    }
-}

apps/infrastructure/src/tools/lsp/mod.rs

@@ -1,18 +0,0 @@
-//! LSP tool implementations — connect, diagnostics, hover, completion,
-//! definition, references, disconnect.
-
-pub mod completion;
-pub mod connect;
-pub mod definition;
-pub mod diagnostics;
-pub mod disconnect;
-pub mod hover;
-pub mod references;
-
-pub use completion::LspCompletion;
-pub use connect::LspConnect;
-pub use definition::LspDefinition;
-pub use diagnostics::LspDiagnostics;
-pub use disconnect::LspDisconnect;
-pub use hover::LspHover;
-pub use references::LspReferences;

apps/infrastructure/src/tools/lsp/references.rs

@@ -1,81 +0,0 @@
-//! Find references via LSP.
-//!
-//! Sends a `textDocument/references` request to the connected language
-//! server for a symbol at a given file position.
-
-use crate::tools::{Tool, ToolCtx};
-use anyhow::Result;
-use serde_json::{json, Value};
-use tracing::{error, info, instrument};
-
-/// Tool that finds all references to a symbol at a position via LSP.
-///
-/// Flow: parse language/path/line/character → lock LSP manager → find client
-/// → send `textDocument/references` → return pretty-printed JSON response
-/// containing all reference locations.
-pub struct LspReferences;
-
-impl Tool for LspReferences {
-    fn name(&self) -> &'static str {
-        "lsp_references"
-    }
-
-    fn description(&self) -> &'static str {
-        "Find all references to a symbol at a position"
-    }
-
-    fn parameters(&self) -> Value {
-        json!({
-            "type": "object",
-            "properties": {
-                "language": {
-                    "type": "string",
-                    "description": "Language identifier"
-                },
-                "path": {
-                    "type": "string",
-                    "description": "File path"
-                },
-                "line": {
-                    "type": "integer",
-                    "description": "Line number (0-based)"
-                },
-                "character": {
-                    "type": "integer",
-                    "description": "Character offset (0-based)"
-                }
-            },
-            "required": ["language", "path", "line", "character"]
-        })
-    }
-
-    #[instrument(skip(self, ctx, args))]
-    fn run(&self, ctx: &ToolCtx, args: &Value) -> Result<String> {
-        let language = crate::tools::arg_str(args, "language")?;
-        let path = crate::tools::arg_str(args, "path")?;
-        let line = args.get("line").and_then(|v| v.as_i64()).unwrap_or(0);
-        let character = args.get("character").and_then(|v| v.as_i64()).unwrap_or(0);
-
-        info!(language, path, line, character, "LSP references requested");
-
-        let manager = match ctx.lsp_manager.lock() {
-            Ok(g) => g,
-            Err(poisoned) => {
-                error!("LSP manager mutex poisoned, recovering");
-                poisoned.into_inner()
-            }
-        };
-        if let Some(client) = manager.get_client(&language) {
-            let result = client.send_request(
-                "textDocument/references",
-                &json!({
-                    "textDocument": { "uri": format!("file://{}", path) },
-                    "position": { "line": line, "character": character }
-                }),
-            )?;
-            Ok(serde_json::to_string_pretty(&result)?)
-        } else {
-            anyhow::bail!("no LSP client connected for '{language}'")
-        }
-    }
-}

apps/infrastructure/src/tools/mod.rs

@@ -18,7 +18,6 @@
 //! ├── executor.rs  — InfrastructureToolExecutor
 //! ├── fs/          — read, write, edit, delete
 //! ├── git/         — git_operator, git_worktree, git_cred
-//! ├── lsp/         — connect, disconnect, diagnostics, completion, etc.
 //! ├── memory/      — remember, forget, recall
 //! ├── utility/     — cd, dir_list, pong, todowrite, todofinish, etc.
 //! ├── shell.rs     — Bash tool
@@ -41,7 +40,6 @@ pub mod executor;
 pub mod fs;
 pub mod git;
 pub mod graduated;
-pub mod lsp;
 pub mod memory;
 pub mod parallel_delegate;
 pub mod plan;

apps/infrastructure/src/tools/registry.rs

@@ -34,13 +34,6 @@ pub fn all_tools() -> Vec<Box<dyn super::Tool>> {
         Box::new(super::utility::pong::Pong),
         Box::new(super::utility::todowrite::Todowrite),
         Box::new(super::utility::todofinish::Todofinish),
-        Box::new(super::lsp::LspConnect),
-        Box::new(super::lsp::LspDiagnostics),
-        Box::new(super::lsp::LspHover),
-        Box::new(super::lsp::LspCompletion),
-        Box::new(super::lsp::LspDefinition),
-        Box::new(super::lsp::LspReferences),
-        Box::new(super::lsp::LspDisconnect),
         Box::new(super::web_search::WebSearch),
         Box::new(super::semantic_search::SemanticSearch),
         Box::new(super::semantic_search::RebuildIndex),

apps/interfaces/daemon/src/state.rs

@@ -23,7 +23,6 @@ use zesdex_domain::SessionLockRepository;
 use zesdex_domain::SessionRepository;
 use zesdex_domain::Settings;
 use zesdex_domain::SettingsRepository;
-use zesdex_infrastructure::lsp::manager::LspManager;
 use zesdex_infrastructure::mcp::manager::McpManager;
 use zesdex_infrastructure::persistence::FileSystemSessionLockRepository;
 use zesdex_infrastructure::persistence::JsonAppConfigRepository;
@@ -460,10 +459,6 @@ pub struct AppStateRest {
     pub workflow_engine: WorkflowEngine,
     /// MCP server manager.
     pub mcp_manager: McpManager,
-    /// LSP server manager, shared with tool context.
-    pub lsp_manager: Arc<Mutex<LspManager>>,
-    /// Shared queue for LSP provisioning messages.
-    pub lsp_provision_msgs: Arc<Mutex<VecDeque<String>>>,
     /// Whether the state has been modified since the last render sweep.
     pub dirty: bool,
     /// Whether the application has been requested to quit.
@@ -537,8 +532,6 @@ impl AppStateRest {
             session_runtime: Some(SessionRuntime::new(session_dir.to_path_buf())),
             workflow_engine: WorkflowEngine::new(),
             mcp_manager: McpManager::new(),
-            lsp_provision_msgs: Arc::new(Mutex::new(VecDeque::new())),
-            lsp_manager: Arc::new(Mutex::new(LspManager::new())),
             sessions: Vec::new(),
             transcript_cache: TranscriptCache::new(200),
             scroll: ScrollState::new(),
@@ -624,13 +617,6 @@ impl AppStateRest {
         )
     }
 
-    /// Shut down every running LSP server process.
-    pub fn shutdown_lsp(&mut self) {
-        if let Ok(mut mgr) = self.lsp_manager.lock() {
-            mgr.shutdown_all();
-        }
-    }
-
     /// Append a message to the transcript, evicting the oldest entry once
     /// `max_lines` is exceeded.
     pub fn push_transcript(&mut self, msg: ChatMessageDisplay) {

apps/interfaces/tui/src/model/agent_def/builtin.rs

@@ -6,8 +6,8 @@
 //! ## Available agents
 //! | Agent | Purpose | Key tools |
 //! |-------|---------|-----------|
-//! | coder | Write/edit code | read, write, edit, bash, lsp_* |
+//! | coder | Write/edit code | read, write, edit, bash, git_operator |
-//! | reviewer | Review code for correctness/safety | read, grep, lsp_diagnostics |
+//! | reviewer | Review code for correctness/safety | read, grep, recall |
 //! | researcher | Search and summarise | read, grep, bash, search_web |
 //! | planner | Break down tasks into steps | read, write, edit, bash, todo_* |
 
@@ -81,13 +81,6 @@ pub fn builtin_agents() -> Vec<AgentDefinition> {
                 "grep".to_string(),
                 "glob".to_string(),
                 "git_operator".to_string(),
-                "lsp_connect".to_string(),
-                "lsp_diagnostics".to_string(),
-                "lsp_hover".to_string(),
-                "lsp_definition".to_string(),
-                "lsp_references".to_string(),
-                "lsp_completion".to_string(),
-                "lsp_disconnect".to_string(),
             ])
             .with_max_steps(usize::MAX),
         AgentDefinition::new("reviewer".to_string(), "reviewer".to_string())
@@ -101,10 +94,6 @@ pub fn builtin_agents() -> Vec<AgentDefinition> {
                 "glob".to_string(),
                 "recall".to_string(),
                 "remember".to_string(),
-                "lsp_diagnostics".to_string(),
-                "lsp_hover".to_string(),
-                "lsp_definition".to_string(),
-                "lsp_references".to_string(),
             ])
             .with_max_steps(usize::MAX),
         AgentDefinition::new("researcher".to_string(), "researcher".to_string())

apps/interfaces/tui/src/run.rs

@@ -112,9 +112,12 @@ fn run_loop_inner(
         }
 
         // Drain expired toasts exactly once per loop iteration (was being
-        // done here AND in Action::Tick before this fix).
+        // done here AND in Action::Tick before this fix). Skip the clock
-        let now_ms = chrono::Utc::now().timestamp_millis();
+        // syscall + Vec scan when there are no toasts at all.
-        state.misc.drain_expired_toasts(now_ms);
+        if !state.misc.toasts.is_empty() {
+            let now_ms = chrono::Utc::now().timestamp_millis();
+            state.misc.drain_expired_toasts(now_ms);
+        }
 
         // Skip render when nothing has changed — avoids expensive markdown
         // re-parse and layout recalculation every cycle while idle.

apps/interfaces/tui/src/state/misc.rs

@@ -179,16 +179,9 @@ impl MiscState {
         self.toasts.push(toast);
     }
 
-    /// Remove and return all toasts whose lifetime has expired at `now_ms`.
+    /// Remove all toasts whose lifetime has expired at `now_ms`.
-    pub fn drain_expired_toasts(&mut self, now_ms: i64) -> Vec<Toast> {
+    pub fn drain_expired_toasts(&mut self, now_ms: i64) {
-        let expired: Vec<_> = self
-            .toasts
-            .iter()
-            .filter(|t| t.expired(now_ms))
-            .cloned()
-            .collect();
         self.toasts.retain(|t| !t.expired(now_ms));
-        expired
     }
 }
 

apps/interfaces/tui/src/state/mod.rs

@@ -103,6 +103,13 @@ pub struct AppStateRest {
     pub last_render_width: u16,
     /// Number of messages that were in the cache when it was last built.
     pub cached_msg_count: usize,
+    /// Cache index where the last message's rendered lines begin. Used to
+    /// splice streaming updates (only re-render the trailing message).
+    pub cached_last_start: usize,
+    /// Content+reasoning byte length of the last message when it was last
+    /// rendered. Guards the streaming branch from re-rendering on ticks
+    /// where no new token arrived (spinner-only frames).
+    pub cached_last_len: usize,
     /// Terminal width at the time of the last full cache build.
     pub render_width_at_cache: u16,
     /// Atomic flag set when the user aborts the current turn.
@@ -180,6 +187,8 @@ impl Default for AppStateRest {
             token_count_dirty: true,
             last_render_width: 0,
             cached_msg_count: 0,
+            cached_last_start: 0,
+            cached_last_len: 0,
             render_width_at_cache: 0,
         }
     }
@@ -230,6 +239,8 @@ impl AppStateRest {
             token_count_dirty: true,
             last_render_width: 0,
             cached_msg_count: 0,
+            cached_last_start: 0,
+            cached_last_len: 0,
             render_width_at_cache: 0,
         }
     }

apps/interfaces/tui/src/view/chat.rs

@@ -190,6 +190,8 @@ impl Component for ChatComponent {
             }
             state.display_lines_cache = all_lines;
             state.cached_msg_count = msg_count;
+            state.cached_last_start = state.display_lines_cache.len();
+            state.cached_last_len = last_msg_len(state);
             state.render_width_at_cache = state.last_render_width;
             state.transcript_cache.dirty = false;
         } else if state.transcript_cache.dirty && msg_count > cached_count {
@@ -205,6 +207,27 @@ impl Component for ChatComponent {
                 state.display_lines_cache.extend(msg_lines);
             }
             state.cached_msg_count = msg_count;
+            state.cached_last_start = state.display_lines_cache.len();
+            state.cached_last_len = last_msg_len(state);
+            state.transcript_cache.dirty = false;
+        } else if state.transcript_cache.dirty {
+            // Streaming update: message count unchanged, but the last
+            // assistant message's content grew (StreamToken). Re-render only
+            // that message and splice its lines back into the cache — this
+            // keeps updates O(new content), not O(whole history) per token.
+            // Without this branch, streamed tokens would never appear (the
+            // cache is only rebuilt on new-message or resize paths).
+            let cur_len = last_msg_len(state);
+            if cur_len != state.cached_last_len {
+                if let Some(last_msg) = state.transcript_cache.messages.back() {
+                    if state.cached_last_start <= state.display_lines_cache.len() {
+                        let new_lines = render_one_message(last_msg, content_width);
+                        state.display_lines_cache.truncate(state.cached_last_start);
+                        state.display_lines_cache.extend(new_lines);
+                    }
+                }
+                state.cached_last_len = cur_len;
+            }
             state.transcript_cache.dirty = false;
         }
 
@@ -326,3 +349,15 @@ fn split_spans_into_lines(spans: Vec<Span<'_>>) -> Vec<Line<'_>> {
     }
     lines
 }
+
+/// Byte length of the last message's content + reasoning. Used as a cheap
+/// change detector for the streaming render branch — avoids re-rendering on
+/// spinner-only ticks where no new token arrived.
+fn last_msg_len(state: &crate::state::AppStateRest) -> usize {
+    state
+        .transcript_cache
+        .messages
+        .back()
+        .map(|m| m.content.len() + m.reasoning.len())
+        .unwrap_or(0)
+}

apps/interfaces/tui/src/view/mod.rs

@@ -86,6 +86,10 @@ pub fn draw(frame: &mut Frame, state: &AppStateRest) {
 }
 
 fn render_toasts(frame: &mut Frame, state: &AppStateRest) {
+    // Fast path: nothing to render.
+    if state.misc.toasts.is_empty() {
+        return;
+    }
     let now_ms = chrono::Utc::now().timestamp_millis();
     let active: Vec<&zesdex_infrastructure::Toast> = state
         .misc