From 903e4537f4a5e915b01a75e0e189b256000c73d5 Mon Sep 17 00:00:00 2001
From: Hunter Bown <hmbown@gmail.com>
Date: Sat, 23 May 2026 11:48:43 -0500
Subject: [PATCH] refactor(strings): rebrand user-facing strings to codewhale
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Rename brand-bearing string literals across the TUI source and the
system-prompt templates that ship inside the binary. The DeepSeek
provider integration is again left intact: the `ApiProvider::Deepseek`
enum variant, the `"deepseek"` provider name string returned by
`ApiProvider`-to-string mappings, model IDs, the `~/.deepseek/` config
directory and `DEEPSEEK_CONFIG_PATH` env var, the OS keyring key
`"deepseek"`, the Ollama `deepseek-coder*` model defaults, the China
preset alias `deepseek-china`, and the various provider list error
messages all keep the legacy spelling.

Touchpoints:

- `crates/tui/src/prompts/*.md` and `*.txt`: brand language flipped to
  `codewhale`; the internal `<deepseek:subagent.done>`,
  `<deepseek:subagent_context>`, `<deepseek:fork_state>`,
  `<deepseek:tool_call>` XML-ish event tags rename in lockstep to
  `<codewhale:…>` so the model-facing format stays consistent.
- `crates/tui/src/tools/subagent/mod.rs`: emits the new event tag.
- `crates/tui/src/core/tool_parser.rs`: parses the new event tag.
- `crates/tui/src/tools/subagent/tests.rs`,
  `crates/tui/tests/protocol_recovery.rs`,
  `crates/tui/src/prompts.rs`: test expectations updated to match the
  new tag and the new prompt text.
- Status / display strings flipped to `codewhale`: `acp_server.rs`'s
  agent name + title, `config_ui.rs`'s config schema title,
  `share.rs`'s export title, `welcome.rs`'s onboarding banner,
  `commands/status.rs`, `core/engine*`, `tui/notifications.rs`,
  `tui/sidebar.rs`, `tui/widgets/header.rs`, `tui/widgets/mod.rs`,
  `tui/ui.rs`'s resume-hint, `main.rs`'s clap header and `Doctor`
  prose, `tui/ui/tests.rs` and other test assertions.
- `crates/tui/src/logging.rs` test fixture: `deepseek_cli=debug` ->
  `codewhale_cli=debug` so the log-filter test references the renamed
  crate.
- Tracing targets that were namespaced under the brand
  (`target: "deepseek::config"`) move to `target: "codewhale::config"`.
- Test-fixture tempdir prefixes (`deepseek-tui-…` / `deepseek-…`) rename
  for consistency.

Local gates green: `cargo check --workspace --all-targets --locked`,
`cargo fmt --all -- --check`, `cargo clippy --workspace --all-targets
--all-features --locked -- -D warnings`, `cargo test --workspace
--all-features --locked` (3226+ pass, 0 fail).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
---
 crates/tui/src/acp_server.rs                  |   8 +-
 crates/tui/src/commands/config.rs             |  16 +-
 crates/tui/src/commands/core.rs               |   4 +-
 crates/tui/src/commands/share.rs              |  12 +-
 crates/tui/src/commands/status.rs             |   4 +-
 crates/tui/src/config.rs                      | 146 +++++++-------
 crates/tui/src/config_ui.rs                   |  14 +-
 crates/tui/src/core/engine.rs                 |   6 +-
 crates/tui/src/core/engine/streaming.rs       |   4 +-
 crates/tui/src/core/engine/tests.rs           |   6 +-
 crates/tui/src/core/engine/turn_loop.rs       |  10 +-
 crates/tui/src/core/tool_parser.rs            |  12 +-
 crates/tui/src/dependencies.rs                |   2 +-
 crates/tui/src/localization.rs                |  20 +-
 crates/tui/src/logging.rs                     |   2 +-
 crates/tui/src/main.rs                        | 186 +++++++++---------
 crates/tui/src/mcp.rs                         |   4 +-
 crates/tui/src/prompts.rs                     |  14 +-
 crates/tui/src/prompts/agent.txt              |   2 +-
 crates/tui/src/prompts/base.md                |  10 +-
 crates/tui/src/prompts/base.txt               |   2 +-
 crates/tui/src/tools/subagent/mod.rs          |  18 +-
 crates/tui/src/tools/subagent/tests.rs        |  26 +--
 crates/tui/src/tui/notifications.rs           |  22 +--
 crates/tui/src/tui/onboarding/welcome.rs      |   2 +-
 crates/tui/src/tui/sidebar.rs                 |   4 +-
 crates/tui/src/tui/ui.rs                      |   2 +-
 crates/tui/src/tui/ui/tests.rs                |  16 +-
 crates/tui/src/tui/widgets/header.rs          |  18 +-
 crates/tui/src/tui/widgets/mod.rs             |  18 +-
 crates/tui/tests/protocol_recovery.rs         |   4 +-
 .../tui/tests/support/qa_harness/harness.rs   |   2 +-
 32 files changed, 308 insertions(+), 308 deletions(-)

diff --git a/crates/tui/src/acp_server.rs b/crates/tui/src/acp_server.rs
index 1b2cbd38..72a110cf 100644
--- a/crates/tui/src/acp_server.rs
+++ b/crates/tui/src/acp_server.rs
@@ -143,7 +143,7 @@ impl AcpServer {
             .and_then(Value::as_str)
             .map(PathBuf::from)
             .unwrap_or_else(|| self.default_cwd.clone());
-        let session_id = format!("deepseek-{}", uuid::Uuid::new_v4());
+        let session_id = format!("codewhale-{}", uuid::Uuid::new_v4());
         self.sessions.insert(session_id.clone(), AcpSession { cwd });
         Ok(json!({ "sessionId": session_id }))
     }
@@ -284,8 +284,8 @@ fn initialize_result(client_protocol_version: Option<u64>) -> Value {
             "sessionCapabilities": {}
         },
         "agentInfo": {
-            "name": "deepseek",
-            "title": "DeepSeek TUI",
+            "name": "codewhale",
+            "title": "codewhale",
             "version": env!("CARGO_PKG_VERSION")
         },
         "authMethods": []
@@ -423,7 +423,7 @@ mod tests {
         let result = initialize_result(Some(1));
 
         assert_eq!(result["protocolVersion"], 1);
-        assert_eq!(result["agentInfo"]["name"], "deepseek");
+        assert_eq!(result["agentInfo"]["name"], "codewhale");
         assert_eq!(result["agentCapabilities"]["loadSession"], false);
         assert_eq!(
             result["agentCapabilities"]["promptCapabilities"]["embeddedContext"],
diff --git a/crates/tui/src/commands/config.rs b/crates/tui/src/commands/config.rs
index c84afec1..40ffe1dc 100644
--- a/crates/tui/src/commands/config.rs
+++ b/crates/tui/src/commands/config.rs
@@ -976,7 +976,7 @@ pub struct AutoRouteSelection {
 }
 
 pub const AUTO_MODEL_ROUTER_SYSTEM_PROMPT: &str = "\
-You are the DeepSeek TUI auto-routing classifier. Return only compact JSON: \
+You are the codewhale auto-routing classifier. Return only compact JSON: \
 {\"model\":\"deepseek-v4-flash|deepseek-v4-pro\",\"thinking\":\"off|high|max\"}. \
 Use deepseek-v4-flash for trivial, conversational, status, or single-step work. \
 Use deepseek-v4-pro for coding, debugging, release work, multi-step tasks, high-risk decisions, \
@@ -1706,7 +1706,7 @@ mod tests {
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-default-mode-test-{}-{}",
+            "codewhale-tui-default-mode-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -1731,7 +1731,7 @@ mod tests {
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-cost-currency-test-{}-{}",
+            "codewhale-tui-cost-currency-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -1757,7 +1757,7 @@ mod tests {
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-theme-command-test-{}-{}",
+            "codewhale-tui-theme-command-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -1780,7 +1780,7 @@ mod tests {
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-theme-save-test-{}-{}",
+            "codewhale-tui-theme-save-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -1884,7 +1884,7 @@ mod tests {
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-logout-test-{}-{}",
+            "codewhale-tui-logout-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -1933,7 +1933,7 @@ mod tests {
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-statusline-persist-{}-{}",
+            "codewhale-statusline-persist-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -1964,7 +1964,7 @@ mod tests {
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-statusline-preserve-{}-{}",
+            "codewhale-statusline-preserve-{}-{}",
             std::process::id(),
             nanos
         ));
diff --git a/crates/tui/src/commands/core.rs b/crates/tui/src/commands/core.rs
index 4820b1bd..9e8fd775 100644
--- a/crates/tui/src/commands/core.rs
+++ b/crates/tui/src/commands/core.rs
@@ -782,7 +782,7 @@ mod tests {
         let result = home_dashboard(&mut app);
         assert!(result.message.is_some());
         let msg = result.message.unwrap();
-        assert!(msg.contains("DeepSeek TUI Home Dashboard"));
+        assert!(msg.contains("codewhale Home Dashboard"));
         assert!(msg.contains("Model:"));
         assert!(msg.contains("Mode:"));
         assert!(msg.contains("Workspace:"));
@@ -831,7 +831,7 @@ mod tests {
             !msg.lines()
                 .any(|line| line.trim_start().starts_with("/set "))
         );
-        assert!(!msg.contains("/deepseek"));
+        assert!(!msg.contains("/codewhale"));
     }
 
     #[test]
diff --git a/crates/tui/src/commands/share.rs b/crates/tui/src/commands/share.rs
index 0ba38ca4..25c1db58 100644
--- a/crates/tui/src/commands/share.rs
+++ b/crates/tui/src/commands/share.rs
@@ -101,7 +101,7 @@ fn render_session_html(history_json: &str, model: &str, mode: &str) -> String {
 <head>
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
-<title>DeepSeek TUI Session Export</title>
+<title>codewhale Session Export</title>
 <style>
   body {{
     font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
@@ -119,14 +119,14 @@ fn render_session_html(history_json: &str, model: &str, mode: &str) -> String {
 </style>
 </head>
 <body>
-<h1>DeepSeek TUI Session</h1>
+<h1>codewhale Session</h1>
 <div class="meta">
   <strong>Model:</strong> {escaped_model} · <strong>Mode:</strong> {escaped_mode}<br>
   <strong>Exported:</strong> {timestamp}
 </div>
 <pre>{escaped_body}</pre>
 <div class="footer">
-  Generated by DeepSeek TUI · https://github.com/Hmbown/DeepSeek-TUI
+  Generated by codewhale · https://github.com/Hmbown/DeepSeek-TUI
 </div>
 </body>
 </html>"#,
@@ -145,7 +145,7 @@ fn html_escape(s: &str) -> String {
 /// Write HTML to a secure temp file and keep it alive for upload.
 fn write_temp_html(html: &str) -> Result<tempfile::NamedTempFile, String> {
     let mut tmp = tempfile::Builder::new()
-        .prefix("deepseek-share-")
+        .prefix("codewhale-share-")
         .suffix(".html")
         .tempfile()
         .map_err(|e| format!("{e}"))?;
@@ -164,7 +164,7 @@ async fn upload_gist(path: &Path) -> Result<String, String> {
             "--filename",
             "session-export.html",
             "--desc",
-            "DeepSeek TUI Session Export",
+            "codewhale Session Export",
         ])
         .output()
         .await
@@ -194,7 +194,7 @@ mod tests {
         assert!(html.contains("deepseek-v4-pro"));
         assert!(html.contains("agent"));
         assert!(html.contains("[{}]"));
-        assert!(html.contains("DeepSeek TUI"));
+        assert!(html.contains("codewhale"));
     }
 
     #[test]
diff --git a/crates/tui/src/commands/status.rs b/crates/tui/src/commands/status.rs
index 55e84cdc..c721dec7 100644
--- a/crates/tui/src/commands/status.rs
+++ b/crates/tui/src/commands/status.rs
@@ -18,7 +18,7 @@ fn format_status(app: &App) -> String {
     let mut out = String::new();
     let (context_used, context_max, context_percent) = context_usage(app);
 
-    let _ = writeln!(out, "DeepSeek TUI Status");
+    let _ = writeln!(out, "codewhale Status");
     let _ = writeln!(out, "===================");
     let _ = writeln!(out);
     push_row(&mut out, "Version:", env!("CARGO_PKG_VERSION"));
@@ -227,7 +227,7 @@ mod tests {
 
         let result = status(&mut app);
         let msg = result.message.expect("status message");
-        assert!(msg.contains("DeepSeek TUI Status"));
+        assert!(msg.contains("codewhale Status"));
         assert!(msg.contains("Provider:"));
         assert!(msg.contains("Model:"));
         assert!(msg.contains("Directory:"));
diff --git a/crates/tui/src/config.rs b/crates/tui/src/config.rs
index 471534a9..663aae88 100644
--- a/crates/tui/src/config.rs
+++ b/crates/tui/src/config.rs
@@ -1,4 +1,4 @@
-//! Configuration loading and defaults for DeepSeek TUI.
+//! Configuration loading and defaults for codewhale.
 
 use std::collections::HashMap;
 use std::fmt::Write;
@@ -969,7 +969,7 @@ pub struct Config {
     #[serde(default)]
     pub hooks: Option<HooksConfig>,
 
-    /// Provider-specific credentials and defaults shared with the `deepseek` facade.
+    /// Provider-specific credentials and defaults shared with the `codewhale` facade.
     #[serde(default)]
     pub providers: Option<ProvidersConfig>,
 
@@ -1024,7 +1024,7 @@ pub struct Config {
     #[serde(default)]
     pub subagents: Option<SubagentsConfig>,
 
-    /// Runtime API server tuning (`deepseek serve --http`). Currently only
+    /// Runtime API server tuning (`codewhale serve --http`). Currently only
     /// hosts the CORS allow-list extension (whalescale#255 / #561). When the
     /// table is absent, the daemon ships with localhost:3000 / localhost:1420
     /// / tauri://localhost as the only allowed dev origins.
@@ -1656,7 +1656,7 @@ impl Config {
         }
 
         // 1. Config file (provider-scoped slot). This intentionally wins
-        // over ambient env so `deepseek auth set` fixes stale shell exports.
+        // over ambient env so `codewhale auth set` fixes stale shell exports.
         if let Some(configured) = self
             .provider_config_for(provider)
             .and_then(|provider| provider.api_key.clone())
@@ -1683,7 +1683,7 @@ impl Config {
                  \n\
                  1. Get a key:  https://platform.deepseek.com/api_keys\n\
                  2. Save it (works in every folder, no OS prompts):\n\
-                        deepseek auth set --provider deepseek\n\
+                        codewhale auth set --provider deepseek\n\
                  \n\
                  Alternatives:\n\
                    • export DEEPSEEK_API_KEY=<your-key>      (current shell only;\n\
@@ -1692,33 +1692,33 @@ impl Config {
                    • api_key = \"<your-key>\"  in ~/.deepseek/config.toml"
             ),
             ApiProvider::NvidiaNim => anyhow::bail!(
-                "NVIDIA NIM API key not found. Run 'deepseek auth set --provider nvidia-nim', \
+                "NVIDIA NIM API key not found. Run 'codewhale auth set --provider nvidia-nim', \
                  set NVIDIA_API_KEY/NVIDIA_NIM_API_KEY, or save api_key in ~/.deepseek/config.toml \
                  with provider = \"nvidia-nim\"."
             ),
             ApiProvider::Openai => anyhow::bail!(
-                "OpenAI-compatible API key not found. Run 'deepseek auth set --provider openai', \
+                "OpenAI-compatible API key not found. Run 'codewhale auth set --provider openai', \
                  set OPENAI_API_KEY, or add [providers.openai] api_key in ~/.deepseek/config.toml."
             ),
             ApiProvider::Atlascloud => anyhow::bail!(
-                "AtlasCloud API key not found. Run 'deepseek auth set --provider atlascloud', \
+                "AtlasCloud API key not found. Run 'codewhale auth set --provider atlascloud', \
                  set ATLASCLOUD_API_KEY, or add [providers.atlascloud] api_key in ~/.deepseek/config.toml."
             ),
             ApiProvider::WanjieArk => anyhow::bail!(
-                "Wanjie Ark API key not found. Run 'deepseek auth set --provider wanjie-ark', \
+                "Wanjie Ark API key not found. Run 'codewhale auth set --provider wanjie-ark', \
                  set WANJIE_ARK_API_KEY/WANJIE_API_KEY/WANJIE_MAAS_API_KEY, or add \
                  [providers.wanjie_ark] api_key in ~/.deepseek/config.toml."
             ),
             ApiProvider::Openrouter => anyhow::bail!(
-                "OpenRouter API key not found. Run 'deepseek auth set --provider openrouter', \
+                "OpenRouter API key not found. Run 'codewhale auth set --provider openrouter', \
                  set OPENROUTER_API_KEY, or add [providers.openrouter] api_key in ~/.deepseek/config.toml."
             ),
             ApiProvider::Novita => anyhow::bail!(
-                "Novita API key not found. Run 'deepseek auth set --provider novita', \
+                "Novita API key not found. Run 'codewhale auth set --provider novita', \
                  set NOVITA_API_KEY, or add [providers.novita] api_key in ~/.deepseek/config.toml."
             ),
             ApiProvider::Fireworks => anyhow::bail!(
-                "Fireworks AI API key not found. Run 'deepseek auth set --provider fireworks', \
+                "Fireworks AI API key not found. Run 'codewhale auth set --provider fireworks', \
                  set FIREWORKS_API_KEY, or add [providers.fireworks] api_key in ~/.deepseek/config.toml."
             ),
             // Self-hosted deployments commonly run without auth on localhost.
@@ -2120,7 +2120,7 @@ fn resolve_load_config_path(path: Option<PathBuf>) -> Option<PathBuf> {
 
 /// Create an inspectable config file on first interactive launch.
 ///
-/// The file intentionally omits `api_key`; onboarding or `deepseek auth set`
+/// The file intentionally omits `api_key`; onboarding or `codewhale auth set`
 /// writes that field after the user supplies a key.
 pub fn ensure_config_file_exists(path: Option<PathBuf>) -> Result<Option<PathBuf>> {
     let config_path = path
@@ -2133,9 +2133,9 @@ pub fn ensure_config_file_exists(path: Option<PathBuf>) -> Result<Option<PathBuf
 
     ensure_parent_dir(&config_path)?;
     let content = format!(
-        r#"# DeepSeek TUI Configuration
+        r#"# codewhale Configuration
 # Get your API key from https://platform.deepseek.com
-# Save it with: deepseek auth set --provider deepseek
+# Save it with: codewhale auth set --provider deepseek
 
 # Base URL (default: https://api.deepseek.com/beta)
 # Set https://api.deepseek.com to opt out of beta features.
@@ -3128,7 +3128,7 @@ pub fn ensure_parent_dir(path: &Path) -> Result<()> {
                     perms.set_mode(mode & !0o077);
                     if let Err(err) = fs::set_permissions(parent, perms) {
                         tracing::warn!(
-                            target: "deepseek::config",
+                            target: "codewhale::config",
                             path = %parent.display(),
                             error = %err,
                             "could not tighten parent dir permissions; \
@@ -3166,7 +3166,7 @@ fn write_config_file_secure(path: &Path, content: &str) -> Result<()> {
         // system's native ACL model is doing the access control.
         if let Err(err) = file.set_permissions(fs::Permissions::from_mode(0o600)) {
             tracing::warn!(
-                target: "deepseek::config",
+                target: "codewhale::config",
                 path = %path.display(),
                 error = %err,
                 "could not enforce 0o600 on config file; filesystem may \
@@ -3186,7 +3186,7 @@ fn write_config_file_secure(path: &Path, content: &str) -> Result<()> {
 /// the caller can show a confirmation message without leaking the key.
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub enum SavedCredential {
-    /// Stored in **both** the OS keyring and the deepseek config file.
+    /// Stored in **both** the OS keyring and the codewhale config file.
     /// This is the default outcome on platforms with a working keyring
     /// backend: writing both layers defeats the
     /// `keyring → env → config-file` resolution-order shadow that
@@ -3201,7 +3201,7 @@ pub enum SavedCredential {
         /// Absolute path to the config file that was also updated.
         path: PathBuf,
     },
-    /// Stored in the deepseek config file only. Fallback when no
+    /// Stored in the codewhale config file only. Fallback when no
     /// keyring backend is reachable, or under `cfg(test)` so unit
     /// tests don't pollute the host keyring.
     ConfigFile(PathBuf),
@@ -3324,7 +3324,7 @@ fn save_api_key_to_config_file(api_key: &str) -> Result<PathBuf> {
     } else {
         // Create new minimal config
         format!(
-            r#"# DeepSeek TUI Configuration
+            r#"# codewhale Configuration
 # Get your API key from https://platform.deepseek.com
 # Or set DEEPSEEK_API_KEY environment variable
 
@@ -4063,7 +4063,7 @@ mod tests {
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-test-{}-{}",
+            "codewhale-tui-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -4099,7 +4099,7 @@ mod tests {
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-first-run-config-{}-{}",
+            "codewhale-tui-first-run-config-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -4125,7 +4125,7 @@ mod tests {
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-workspace-trust-{}-{}",
+            "codewhale-tui-workspace-trust-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -4161,7 +4161,7 @@ mod tests {
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-existing-project-trust-{}-{}",
+            "codewhale-tui-existing-project-trust-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -4364,7 +4364,7 @@ mod tests {
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-clear-{}-{}",
+            "codewhale-tui-clear-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -4397,7 +4397,7 @@ api_key = "old-openrouter-key"
         );
         assert!(
             !after.contains("old-provider-key"),
-            "provider-scoped deepseek key must be stripped: {after}"
+            "provider-scoped codewhale key must be stripped: {after}"
         );
         assert!(
             !after.contains("old-openrouter-key"),
@@ -4420,7 +4420,7 @@ api_key = "old-openrouter-key"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-override-{}-{}",
+            "codewhale-tui-override-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -4446,7 +4446,7 @@ api_key = "old-openrouter-key"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-config-over-env-{}-{}",
+            "codewhale-tui-config-over-env-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -4471,7 +4471,7 @@ api_key = "old-openrouter-key"
     fn active_provider_detects_env_only_api_key() -> Result<()> {
         let _lock = lock_test_env();
         let temp_root =
-            env::temp_dir().join(format!("deepseek-tui-env-only-key-{}", std::process::id()));
+            env::temp_dir().join(format!("codewhale-tui-env-only-key-{}", std::process::id()));
         fs::create_dir_all(&temp_root)?;
         let _guard = EnvGuard::new(&temp_root);
 
@@ -4501,7 +4501,7 @@ api_key = "old-openrouter-key"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-sentinel-{}-{}",
+            "codewhale-tui-sentinel-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -4529,7 +4529,7 @@ api_key = "old-openrouter-key"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-tilde-test-{}-{}",
+            "codewhale-tui-tilde-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -4558,7 +4558,7 @@ api_key = "old-openrouter-key"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-load-tilde-test-{}-{}",
+            "codewhale-tui-load-tilde-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -4587,7 +4587,7 @@ api_key = "old-openrouter-key"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-load-fallback-test-{}-{}",
+            "codewhale-tui-load-fallback-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -4646,7 +4646,7 @@ api_key = "old-openrouter-key"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-api-key-test-{}-{}",
+            "codewhale-tui-api-key-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -4693,7 +4693,7 @@ api_key = "old-openrouter-key"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-empty-key-{}-{}",
+            "codewhale-tui-empty-key-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -4726,7 +4726,7 @@ api_key = "old-openrouter-key"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-env-key-not-config-{}-{}",
+            "codewhale-tui-env-key-not-config-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -4839,7 +4839,7 @@ api_key = "old-openrouter-key"
     #[test]
     fn normalize_model_name_rejects_invalid_or_non_deepseek_ids() {
         assert!(normalize_model_name("gpt-4o").is_none());
-        assert!(normalize_model_name("deepseek v4").is_none());
+        assert!(normalize_model_name("codewhale v4").is_none());
         assert!(normalize_model_name("").is_none());
     }
 
@@ -4980,7 +4980,7 @@ api_key = "old-openrouter-key"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-model-env-test-{}-{}",
+            "codewhale-tui-model-env-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5009,7 +5009,7 @@ api_key = "old-openrouter-key"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-http-headers-root-{}-{}",
+            "codewhale-tui-http-headers-root-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5073,7 +5073,7 @@ http_headers = { "X-Model-Provider-Id" = "tongyi" }
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-http-headers-env-{}-{}",
+            "codewhale-tui-http-headers-env-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5127,7 +5127,7 @@ http_headers = { "X-Model-Provider-Id" = "from-file" }
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-nim-model-alias-test-{}-{}",
+            "codewhale-tui-nim-model-alias-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5171,7 +5171,7 @@ http_headers = { "X-Model-Provider-Id" = "from-file" }
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-nim-env-test-{}-{}",
+            "codewhale-tui-nim-env-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5200,7 +5200,7 @@ http_headers = { "X-Model-Provider-Id" = "from-file" }
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-nim-base-url-alias-test-{}-{}",
+            "codewhale-tui-nim-base-url-alias-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5227,7 +5227,7 @@ http_headers = { "X-Model-Provider-Id" = "from-file" }
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-nim-forwarded-base-url-test-{}-{}",
+            "codewhale-tui-nim-forwarded-base-url-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5285,7 +5285,7 @@ http_headers = { "X-Model-Provider-Id" = "from-file" }
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-atlascloud-env-test-{}-{}",
+            "codewhale-tui-atlascloud-env-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5329,7 +5329,7 @@ http_headers = { "X-Model-Provider-Id" = "from-file" }
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-wanjie-env-test-{}-{}",
+            "codewhale-tui-wanjie-env-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5359,7 +5359,7 @@ http_headers = { "X-Model-Provider-Id" = "from-file" }
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-wanjie-table-{}-{}",
+            "codewhale-tui-wanjie-table-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5398,7 +5398,7 @@ model = "account-model-id"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-openai-table-{}-{}",
+            "codewhale-tui-openai-table-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5429,7 +5429,7 @@ model = "glm-5"
         Ok(())
     }
 
-    // Regression for issue #1714: `deepseek --provider openai --model
+    // Regression for issue #1714: `codewhale --provider openai --model
     // MiniMax-M2.7` forwards the choice via DEEPSEEK_MODEL (never
     // OPENAI_MODEL) and uses the DEFAULT base_url. The explicit custom model
     // must pass through verbatim instead of silently becoming a
@@ -5442,7 +5442,7 @@ model = "glm-5"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-1714-passthrough-{}-{}",
+            "codewhale-tui-1714-passthrough-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5495,7 +5495,7 @@ model = "glm-5"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-openai-env-test-{}-{}",
+            "codewhale-tui-openai-env-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5529,7 +5529,7 @@ model = "glm-5"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-openai-forwarded-base-url-test-{}-{}",
+            "codewhale-tui-openai-forwarded-base-url-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5563,7 +5563,7 @@ model = "glm-5"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-or-defaults-{}-{}",
+            "codewhale-tui-or-defaults-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5589,7 +5589,7 @@ model = "glm-5"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-novita-defaults-{}-{}",
+            "codewhale-tui-novita-defaults-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5615,7 +5615,7 @@ model = "glm-5"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-fireworks-defaults-{}-{}",
+            "codewhale-tui-fireworks-defaults-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5641,7 +5641,7 @@ model = "glm-5"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-sglang-defaults-{}-{}",
+            "codewhale-tui-sglang-defaults-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5669,7 +5669,7 @@ model = "glm-5"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-ollama-defaults-{}-{}",
+            "codewhale-tui-ollama-defaults-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5697,7 +5697,7 @@ model = "glm-5"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-ollama-model-test-{}-{}",
+            "codewhale-tui-ollama-model-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5731,7 +5731,7 @@ model = "qwen2.5-coder:7b"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-self-hosted-base-url-test-{}-{}",
+            "codewhale-tui-self-hosted-base-url-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5766,7 +5766,7 @@ model = "qwen2.5-coder:7b"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-ollama-env-test-{}-{}",
+            "codewhale-tui-ollama-env-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5795,7 +5795,7 @@ model = "qwen2.5-coder:7b"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-or-env-key-{}-{}",
+            "codewhale-tui-or-env-key-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5822,7 +5822,7 @@ model = "qwen2.5-coder:7b"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-novita-env-key-{}-{}",
+            "codewhale-tui-novita-env-key-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5849,7 +5849,7 @@ model = "qwen2.5-coder:7b"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-or-base-url-{}-{}",
+            "codewhale-tui-or-base-url-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5876,7 +5876,7 @@ model = "qwen2.5-coder:7b"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-or-table-{}-{}",
+            "codewhale-tui-or-table-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5910,7 +5910,7 @@ base_url = "https://or-table.example/v1"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-or-custom-model-{}-{}",
+            "codewhale-tui-or-custom-model-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5946,7 +5946,7 @@ model = "DeepSeek-V4-Pro"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-novita-table-{}-{}",
+            "codewhale-tui-novita-table-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -5979,7 +5979,7 @@ api_key = "novita-table-key"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-has-key-{}-{}",
+            "codewhale-tui-has-key-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -6036,7 +6036,7 @@ api_key = "novita-table-key"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-has-key-cn-{}-{}",
+            "codewhale-tui-has-key-cn-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -6073,7 +6073,7 @@ api_key = "novita-table-key"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-save-key-or-{}-{}",
+            "codewhale-tui-save-key-or-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -6161,7 +6161,7 @@ api_key = "novita-table-key"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-save-key-cn-{}-{}",
+            "codewhale-tui-save-key-cn-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -6188,7 +6188,7 @@ api_key = "novita-table-key"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-nim-provider-table-test-{}-{}",
+            "codewhale-tui-nim-provider-table-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -6227,7 +6227,7 @@ model = "deepseek-v4-pro"
             .unwrap()
             .as_nanos();
         let temp_root = env::temp_dir().join(format!(
-            "deepseek-tui-nim-root-key-precedence-test-{}-{}",
+            "codewhale-tui-nim-root-key-precedence-test-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -6238,7 +6238,7 @@ model = "deepseek-v4-pro"
         ensure_parent_dir(&config_path)?;
         fs::write(
             &config_path,
-            r#"api_key = "deepseek-root-key"
+            r#"api_key = "codewhale-root-key"
 provider = "nvidia-nim"
 
 [providers.nvidia_nim]
diff --git a/crates/tui/src/config_ui.rs b/crates/tui/src/config_ui.rs
index a0915dd8..7e400496 100644
--- a/crates/tui/src/config_ui.rs
+++ b/crates/tui/src/config_ui.rs
@@ -283,7 +283,7 @@ pub enum StatusItemValue {
 pub fn parse_mode(arg: Option<&str>) -> Result<ConfigUiMode, String> {
     let raw = arg.unwrap_or("").trim();
     // Bare `/config` opens the legacy native modal — it matches the rest
-    // of the deepseek-tui navy chrome out of the box. Power users can
+    // of the codewhale-tui navy chrome out of the box. Power users can
     // opt into the schemaui-driven editor with `/config tui`, or the
     // browser surface with `/config web` (web feature only).
     if raw.is_empty() || raw.eq_ignore_ascii_case("native") {
@@ -348,7 +348,7 @@ pub fn build_document(app: &App, config: &Config) -> Result<ConfigUiDocument> {
 
 pub fn build_schema() -> Value {
     let mut schema = serde_json::to_value(schema_for!(ConfigUiDocument)).expect("config ui schema");
-    schema["title"] = Value::String("DeepSeek TUI Config".to_string());
+    schema["title"] = Value::String("codewhale Config".to_string());
     schema["description"] =
         Value::String("Edit runtime and persisted TUI configuration.".to_string());
     schema
@@ -359,7 +359,7 @@ pub fn run_tui_editor(app: &App, config: &Config) -> Result<ConfigUiDocument> {
     let document = build_document(app, config)?;
     let value = SchemaUI::new(serde_json::to_value(document.clone())?)
         .with_schema(build_schema())
-        .with_title("DeepSeek TUI Config")
+        .with_title("codewhale Config")
         .with_description("Edit persisted settings and live runtime knobs.")
         .run(FrontendOptions::Tui(
             UiOptions::default()
@@ -377,7 +377,7 @@ pub async fn start_web_editor(app: &App, config: &Config) -> Result<WebConfigSes
     let initial = serde_json::to_value(build_document(app, config)?)?;
     let session = WebSessionBuilder::new(build_schema())
         .with_initial_data(initial)
-        .with_title("DeepSeek TUI Config")
+        .with_title("codewhale Config")
         .with_description("Save updates the browser draft. Exit commits changes back to the TUI.")
         .build()?;
     let bound = bind_session(session, ServeOptions::default()).await?;
@@ -1082,7 +1082,7 @@ mod tests {
             .expect("clock")
             .as_nanos();
         let temp_root = std::env::temp_dir().join(format!(
-            "deepseek-config-ui-cost-currency-{}-{}",
+            "codewhale-config-ui-cost-currency-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -1126,7 +1126,7 @@ cost_currency = "cny"
             .expect("clock")
             .as_nanos();
         let temp_root = std::env::temp_dir().join(format!(
-            "deepseek-config-ui-background-color-{}-{}",
+            "codewhale-config-ui-background-color-{}-{}",
             std::process::id(),
             nanos
         ));
@@ -1208,7 +1208,7 @@ background_color = "#1A1B26"
             .expect("clock")
             .as_nanos();
         let temp_root = std::env::temp_dir().join(format!(
-            "deepseek-config-ui-session-only-{}-{}",
+            "codewhale-config-ui-session-only-{}-{}",
             std::process::id(),
             nanos
         ));
diff --git a/crates/tui/src/core/engine.rs b/crates/tui/src/core/engine.rs
index 4332df6e..02260410 100644
--- a/crates/tui/src/core/engine.rs
+++ b/crates/tui/src/core/engine.rs
@@ -298,7 +298,7 @@ pub struct Engine {
     /// can fan completion events back into the engine.
     tx_subagent_completion: mpsc::UnboundedSender<SubAgentCompletion>,
     /// Receiver paired with `tx_subagent_completion`. Drained at the
-    /// turn-loop's empty-tool_uses branch to surface `<deepseek:subagent.done>`
+    /// turn-loop's empty-tool_uses branch to surface `<codewhale:subagent.done>`
     /// sentinels into the parent's transcript before deciding to end the turn.
     pub(super) rx_subagent_completion: mpsc::UnboundedReceiver<SubAgentCompletion>,
     cancel_token: CancellationToken,
@@ -378,8 +378,8 @@ impl Engine {
 
         Some(format!(
             "The rejected key came from {env_var}; no saved config key is present.\n\
-             Run `deepseek auth status` to inspect credential sources, then \
-             `deepseek auth set --provider {provider}` to save a valid key in ~/.deepseek/config.toml, \
+             Run `codewhale auth status` to inspect credential sources, then \
+             `codewhale auth set --provider {provider}` to save a valid key in ~/.deepseek/config.toml, \
              or remove the stale export and open a fresh shell.",
             provider = provider.as_str()
         ))
diff --git a/crates/tui/src/core/engine/streaming.rs b/crates/tui/src/core/engine/streaming.rs
index 3c2a654c..0da4d5ae 100644
--- a/crates/tui/src/core/engine/streaming.rs
+++ b/crates/tui/src/core/engine/streaming.rs
@@ -88,7 +88,7 @@ pub(super) fn should_transparently_retry_stream(
 
 pub(crate) const TOOL_CALL_START_MARKERS: [&str; 5] = [
     "[TOOL_CALL]",
-    "<deepseek:tool_call",
+    "<codewhale:tool_call",
     "<tool_call",
     "<invoke ",
     "<function_calls>",
@@ -96,7 +96,7 @@ pub(crate) const TOOL_CALL_START_MARKERS: [&str; 5] = [
 
 pub(crate) const TOOL_CALL_END_MARKERS: [&str; 5] = [
     "[/TOOL_CALL]",
-    "</deepseek:tool_call>",
+    "</codewhale:tool_call>",
     "</tool_call>",
     "</invoke>",
     "</function_calls>",
diff --git a/crates/tui/src/core/engine/tests.rs b/crates/tui/src/core/engine/tests.rs
index 78d50435..ca3c410a 100644
--- a/crates/tui/src/core/engine/tests.rs
+++ b/crates/tui/src/core/engine/tests.rs
@@ -94,8 +94,8 @@ fn env_only_auth_error_gets_recovery_hint() {
 
     assert!(message.contains("DEEPSEEK_API_KEY"));
     assert!(message.contains("no saved config key is present"));
-    assert!(message.contains("deepseek auth status"));
-    assert!(message.contains("deepseek auth set --provider deepseek"));
+    assert!(message.contains("codewhale auth status"));
+    assert!(message.contains("codewhale auth set --provider deepseek"));
 }
 
 #[test]
@@ -1874,7 +1874,7 @@ fn filter_tool_call_delta_strips_bracket_marker() {
 fn filter_tool_call_delta_strips_deepseek_xml_marker() {
     let mut in_block = false;
     let visible = filter_tool_call_delta(
-        "before <deepseek:tool_call name=\"x\">payload</deepseek:tool_call> after",
+        "before <codewhale:tool_call name=\"x\">payload</codewhale:tool_call> after",
         &mut in_block,
     );
     assert!(!in_block);
diff --git a/crates/tui/src/core/engine/turn_loop.rs b/crates/tui/src/core/engine/turn_loop.rs
index 1cfe8f09..e69104e3 100644
--- a/crates/tui/src/core/engine/turn_loop.rs
+++ b/crates/tui/src/core/engine/turn_loop.rs
@@ -924,7 +924,7 @@ impl Engine {
                 // streaming with no tool calls — but if it has direct children
                 // still running (or completions queued from children that
                 // finished while we were inferring), surface their
-                // `<deepseek:subagent.done>` sentinels into the transcript and
+                // `<codewhale:subagent.done>` sentinels into the transcript and
                 // resume instead of ending the turn. This fulfils the contract
                 // already documented in `prompts/base.md`: the parent is
                 // promised it'll see the sentinel when a child finishes.
@@ -2010,13 +2010,13 @@ fn subagent_completion_runtime_message(payload: &str) -> Message {
         role: "system".to_string(),
         content: vec![ContentBlock::Text {
             text: format!(
-                "<deepseek:runtime_event kind=\"subagent_completion\" visibility=\"internal\">\n\
+                "<codewhale:runtime_event kind=\"subagent_completion\" visibility=\"internal\">\n\
 This is an internal runtime event, not user input. Use the sub-agent completion \
 data below to continue coordinating the current task. Do not tell the user they \
 pasted sentinels, do not explain the sentinel protocol, and do not quote the raw \
 XML unless the user explicitly asks to debug sub-agent internals.\n\n\
 {payload}\n\
-</deepseek:runtime_event>"
+</codewhale:runtime_event>"
             ),
             cache_control: None,
         }],
@@ -2109,7 +2109,7 @@ mod tests {
     #[test]
     fn subagent_completion_handoff_is_internal_system_message() {
         let message = subagent_completion_runtime_message(
-            "Build passed\n<deepseek:subagent.done>{\"agent_id\":\"agent_a\"}</deepseek:subagent.done>",
+            "Build passed\n<codewhale:subagent.done>{\"agent_id\":\"agent_a\"}</codewhale:subagent.done>",
         );
 
         assert_eq!(message.role, "system");
@@ -2119,7 +2119,7 @@ mod tests {
         };
         assert!(text.contains("internal runtime event, not user input"));
         assert!(text.contains("Do not tell the user they pasted sentinels"));
-        assert!(text.contains("<deepseek:subagent.done>"));
+        assert!(text.contains("<codewhale:subagent.done>"));
         assert!(text.contains("Build passed"));
     }
 
diff --git a/crates/tui/src/core/tool_parser.rs b/crates/tui/src/core/tool_parser.rs
index 08a73848..d0bdc2da 100644
--- a/crates/tui/src/core/tool_parser.rs
+++ b/crates/tui/src/core/tool_parser.rs
@@ -12,11 +12,11 @@
 //!
 //! Or XML-style format:
 //! ```text
-//! <deepseek:tool_call>
+//! <codewhale:tool_call>
 //! <invoke name="tool_name">
 //! <parameter name="arg">value</parameter>
 //! </invoke>
-//! </deepseek:tool_call>
+//! </codewhale:tool_call>
 //! ```
 //!
 //! This module parses these text patterns into structured tool calls.
@@ -60,8 +60,8 @@ fn get_tool_call_regex() -> &'static Regex {
 
 fn get_xml_tool_call_regex() -> &'static Regex {
     XML_TOOL_CALL_REGEX.get_or_init(|| {
-        // Match <deepseek:tool_call>...</deepseek:tool_call> or similar XML patterns
-        Regex::new(r"(?s)<(?:deepseek:)?tool_call[^>]*>\s*(.*?)\s*</(?:deepseek:)?tool_call>")
+        // Match <codewhale:tool_call>...</codewhale:tool_call> or similar XML patterns
+        Regex::new(r"(?s)<(?:codewhale:)?tool_call[^>]*>\s*(.*?)\s*</(?:codewhale:)?tool_call>")
             .expect("XML tool_call regex pattern is valid")
     })
 }
@@ -108,7 +108,7 @@ pub fn parse_tool_calls(text: &str) -> ParseResult {
         clean_text = clean_text.replace(full_match, "");
     }
 
-    // Parse XML-style <deepseek:tool_call> or <tool_call> format
+    // Parse XML-style <codewhale:tool_call> or <tool_call> format
     let xml_regex = get_xml_tool_call_regex();
     for cap in xml_regex.captures_iter(text) {
         let (Some(full_match), Some(inner)) = (cap.get(0), cap.get(1)) else {
@@ -443,7 +443,7 @@ fn extract_json_object(text: &str) -> Option<Value> {
 /// Check if text contains tool call markers (either format).
 pub fn has_tool_call_markers(text: &str) -> bool {
     text.contains("[TOOL_CALL]")
-        || text.contains("<deepseek:tool_call")
+        || text.contains("<codewhale:tool_call")
         || text.contains("<tool_call")
         || text.contains("<invoke ")
 }
diff --git a/crates/tui/src/dependencies.rs b/crates/tui/src/dependencies.rs
index ec9f5c73..1918c291 100644
--- a/crates/tui/src/dependencies.rs
+++ b/crates/tui/src/dependencies.rs
@@ -219,7 +219,7 @@ mod tests {
     fn probe_executable_returns_false_for_unknown_binary() {
         // Pick a name we're confident isn't on any developer's PATH.
         // If this ever starts failing locally, rename it.
-        assert!(!probe_executable("deepseek-tui-imaginary-binary-xyz123"));
+        assert!(!probe_executable("codewhale-tui-imaginary-binary-xyz123"));
     }
 
     #[test]
diff --git a/crates/tui/src/localization.rs b/crates/tui/src/localization.rs
index d3c17774..1ef618a3 100644
--- a/crates/tui/src/localization.rs
+++ b/crates/tui/src/localization.rs
@@ -952,7 +952,7 @@ fn english(id: MessageId) -> &'static str {
         MessageId::CmdNoteDescription => "Add, list, edit, or remove workspace notes",
         MessageId::CmdThemeDescription => "Switch theme or open the theme picker",
         MessageId::CmdProviderDescription => {
-            "Switch or view the active LLM backend (deepseek | nvidia-nim | ollama)"
+            "Switch or view the active LLM backend (codewhale | nvidia-nim | ollama)"
         }
         MessageId::CmdQueueDescription => "View or edit queued messages",
         MessageId::CmdRecallDescription => "Search prior cycle archives (BM25 over message text)",
@@ -1131,7 +1131,7 @@ fn english(id: MessageId) -> &'static str {
         MessageId::LinksTip => "Tip: API keys are available in the dashboard console.",
         MessageId::SubagentsFetching => "Fetching sub-agent status...",
         MessageId::HelpUnknownCommand => "Unknown command: {topic}",
-        MessageId::HomeDashboardTitle => "DeepSeek TUI Home Dashboard",
+        MessageId::HomeDashboardTitle => "codewhale Home Dashboard",
         MessageId::HomeModel => "Model:",
         MessageId::HomeMode => "Mode:",
         MessageId::HomeWorkspace => "Workspace:",
@@ -1336,7 +1336,7 @@ fn japanese(id: MessageId) -> Option<&'static str> {
             "テーマを切り替え（ダーク/ライト/グレースケール/システム）"
         }
         MessageId::CmdProviderDescription => {
-            "現在の LLM バックエンドを切り替え・確認（deepseek | nvidia-nim | ollama）"
+            "現在の LLM バックエンドを切り替え・確認（codewhale | nvidia-nim | ollama）"
         }
         MessageId::CmdQueueDescription => "キューされたメッセージを確認・編集",
         MessageId::CmdRecallDescription => {
@@ -1516,7 +1516,7 @@ fn japanese(id: MessageId) -> Option<&'static str> {
         MessageId::LinksTip => "ヒント: API キーはダッシュボードコンソールで取得できます。",
         MessageId::SubagentsFetching => "サブエージェントの状態を取得中...",
         MessageId::HelpUnknownCommand => "不明なコマンド: {topic}",
-        MessageId::HomeDashboardTitle => "DeepSeek TUI ホームダッシュボード",
+        MessageId::HomeDashboardTitle => "codewhale ホームダッシュボード",
         MessageId::HomeModel => "モデル：",
         MessageId::HomeMode => "モード：",
         MessageId::HomeWorkspace => "ワークスペース：",
@@ -1679,7 +1679,7 @@ fn chinese_simplified(id: MessageId) -> Option<&'static str> {
         MessageId::CmdNoteDescription => "添加、列出、编辑或删除工作区笔记",
         MessageId::CmdThemeDescription => "切换主题：深色、浅色、灰度或系统",
         MessageId::CmdProviderDescription => {
-            "切换或查看当前 LLM 后端（deepseek | nvidia-nim | ollama）"
+            "切换或查看当前 LLM 后端（codewhale | nvidia-nim | ollama）"
         }
         MessageId::CmdQueueDescription => "查看或编辑已排队的消息",
         MessageId::CmdRecallDescription => "搜索此前的循环归档（基于消息文本的 BM25 检索）",
@@ -1833,7 +1833,7 @@ fn chinese_simplified(id: MessageId) -> Option<&'static str> {
         MessageId::LinksTip => "提示：API 密钥可在控制台中获取。",
         MessageId::SubagentsFetching => "正在获取子代理状态...",
         MessageId::HelpUnknownCommand => "未知命令：{topic}",
-        MessageId::HomeDashboardTitle => "DeepSeek TUI 主面板",
+        MessageId::HomeDashboardTitle => "codewhale 主面板",
         MessageId::HomeModel => "模型：",
         MessageId::HomeMode => "模式：",
         MessageId::HomeWorkspace => "工作区：",
@@ -2006,7 +2006,7 @@ fn portuguese_brazil(id: MessageId) -> Option<&'static str> {
         MessageId::CmdNoteDescription => "Adicionar, listar, editar ou remover notas do workspace",
         MessageId::CmdThemeDescription => "Alternar tema: escuro, claro, tons de cinza ou sistema",
         MessageId::CmdProviderDescription => {
-            "Trocar ou exibir o backend LLM ativo (deepseek | nvidia-nim | ollama)"
+            "Trocar ou exibir o backend LLM ativo (codewhale | nvidia-nim | ollama)"
         }
         MessageId::CmdQueueDescription => "Ver ou editar mensagens enfileiradas",
         MessageId::CmdRecallDescription => {
@@ -2198,7 +2198,7 @@ fn portuguese_brazil(id: MessageId) -> Option<&'static str> {
         MessageId::LinksTip => "Dica: chaves de API estão disponíveis no console do painel.",
         MessageId::SubagentsFetching => "Buscando status dos sub-agentes...",
         MessageId::HelpUnknownCommand => "Comando desconhecido: {topic}",
-        MessageId::HomeDashboardTitle => "Painel Inicial do DeepSeek TUI",
+        MessageId::HomeDashboardTitle => "Painel Inicial do codewhale",
         MessageId::HomeModel => "Modelo:",
         MessageId::HomeMode => "Modo:",
         MessageId::HomeWorkspace => "Workspace:",
@@ -2393,7 +2393,7 @@ fn spanish_latin_america(id: MessageId) -> Option<&'static str> {
         MessageId::CmdNoteDescription => "Agregar nota al archivo persistente (.deepseek/notes.md)",
         MessageId::CmdThemeDescription => "Alternar entre tema claro y oscuro",
         MessageId::CmdProviderDescription => {
-            "Cambiar o mostrar el backend LLM activo (deepseek | nvidia-nim | ollama)"
+            "Cambiar o mostrar el backend LLM activo (codewhale | nvidia-nim | ollama)"
         }
         MessageId::CmdQueueDescription => "Ver o editar mensajes en cola",
         MessageId::CmdRecallDescription => {
@@ -2591,7 +2591,7 @@ fn spanish_latin_america(id: MessageId) -> Option<&'static str> {
         MessageId::LinksTip => "Tip: las claves de API están disponibles en la consola del panel.",
         MessageId::SubagentsFetching => "Obteniendo estado de los sub-agentes...",
         MessageId::HelpUnknownCommand => "Comando desconocido: {topic}",
-        MessageId::HomeDashboardTitle => "Panel Inicial de DeepSeek TUI",
+        MessageId::HomeDashboardTitle => "Panel Inicial de codewhale",
         MessageId::HomeModel => "Modelo:",
         MessageId::HomeMode => "Modo:",
         MessageId::HomeWorkspace => "Workspace:",
diff --git a/crates/tui/src/logging.rs b/crates/tui/src/logging.rs
index 15dd52c0..1dd8e330 100644
--- a/crates/tui/src/logging.rs
+++ b/crates/tui/src/logging.rs
@@ -67,7 +67,7 @@ mod tests {
     #[test]
     fn log_value_parser_accepts_common_rust_log_directives() {
         assert!(log_value_enables_verbose("debug"));
-        assert!(log_value_enables_verbose("deepseek_cli=debug"));
+        assert!(log_value_enables_verbose("codewhale_cli=debug"));
         assert!(log_value_enables_verbose(
             "warn,codewhale_tui::client=trace"
         ));
diff --git a/crates/tui/src/main.rs b/crates/tui/src/main.rs
index 75bfbda9..11beeb87 100644
--- a/crates/tui/src/main.rs
+++ b/crates/tui/src/main.rs
@@ -101,12 +101,12 @@ fn configure_windows_console_utf8() {}
 
 #[derive(Parser, Debug)]
 #[command(
-    name = "deepseek-tui",
-    bin_name = "deepseek-tui",
+    name = "codewhale-tui",
+    bin_name = "codewhale-tui",
     author,
     version = env!("DEEPSEEK_BUILD_VERSION"),
-    about = "DeepSeek TUI/CLI for DeepSeek models",
-    long_about = "Terminal-native TUI and CLI for DeepSeek models.\n\nRun 'deepseek' to start.\n\nNot affiliated with DeepSeek Inc."
+    about = "codewhale/CLI for DeepSeek models",
+    long_about = "Terminal-native TUI and CLI for DeepSeek models.\n\nRun 'codewhale' to start.\n\nNot affiliated with DeepSeek Inc."
 )]
 struct Cli {
     /// Subcommand to run
@@ -372,7 +372,7 @@ fn resolve_exec_resume_session_id(args: &ExecArgs, workspace: &Path) -> Result<O
     latest_session_id_for_workspace(workspace)?.map_or_else(
         || {
             bail!(
-                "No saved sessions found for workspace {}. Use `deepseek sessions` to list sessions, or pass `deepseek exec --resume <SESSION_ID> ...`.",
+                "No saved sessions found for workspace {}. Use `codewhale sessions` to list sessions, or pass `codewhale exec --resume <SESSION_ID> ...`.",
                 workspace.display()
             )
         },
@@ -590,15 +590,15 @@ enum McpCommand {
     Validate,
     /// Register this DeepSeek binary as a local MCP stdio server.
     ///
-    /// This adds a config entry that runs `deepseek serve --mcp` (stdio protocol).
-    /// For the HTTP/SSE runtime API, use `deepseek serve --http` directly instead.
+    /// This adds a config entry that runs `codewhale serve --mcp` (stdio protocol).
+    /// For the HTTP/SSE runtime API, use `codewhale serve --http` directly instead.
     #[command(
         name = "add-self",
-        long_about = "Register this DeepSeek binary as a local MCP stdio server.\n\nAdds a config entry to ~/.deepseek/mcp.json that launches `deepseek serve --mcp`\nvia the stdio transport. Other DeepSeek sessions (or any MCP client) can then\ndiscover and call tools exposed by this server.\n\nUse `deepseek serve --http` instead if you need the HTTP/SSE runtime API."
+        long_about = "Register this DeepSeek binary as a local MCP stdio server.\n\nAdds a config entry to ~/.deepseek/mcp.json that launches `codewhale serve --mcp`\nvia the stdio transport. Other DeepSeek sessions (or any MCP client) can then\ndiscover and call tools exposed by this server.\n\nUse `codewhale serve --http` instead if you need the HTTP/SSE runtime API."
     )]
     AddSelf {
-        /// Server name in mcp.json (default: "deepseek")
-        #[arg(long, default_value = "deepseek")]
+        /// Server name in mcp.json (default: "codewhale")
+        #[arg(long, default_value = "codewhale")]
         name: String,
         /// Workspace directory for the MCP server
         #[arg(long)]
@@ -894,7 +894,7 @@ async fn main() -> Result<()> {
         return run_one_shot(&config, &model, &prompt).await;
     }
 
-    // Handle session resume. Plain `deepseek` starts fresh: interrupted
+    // Handle session resume. Plain `codewhale` starts fresh: interrupted
     // snapshots are preserved for explicit resume, but never auto-attached.
     let resume_session_id = if cli.continue_session {
         let workspace = resolve_workspace(&cli);
@@ -1087,7 +1087,7 @@ fn init_skills_dir(skills_dir: &Path, force: bool) -> Result<(PathBuf, WriteStat
 fn tools_readme_template() -> &'static str {
     "# Local tools\n\n\
      Drop self-describing scripts here so they can be discovered by\n\
-     `deepseek-tui setup --status` and surfaced in `deepseek-tui doctor`.\n\n\
+     `codewhale-tui setup --status` and surfaced in `codewhale-tui doctor`.\n\n\
      Each script should start with a frontmatter-style header so the\n\
      description is visible without executing the file:\n\n\
      ```\n\
@@ -1105,7 +1105,7 @@ fn tools_example_script() -> &'static str {
      # name: example\n\
      # description: Print a confirmation that local tool discovery works\n\
      # usage: example [name]\n\
-     printf 'deepseek-tui local tool ok: %s\\n' \"${1:-world}\"\n"
+     printf 'codewhale-tui local tool ok: %s\\n' \"${1:-world}\"\n"
 }
 
 fn init_tools_dir(tools_dir: &Path, force: bool) -> Result<(PathBuf, WriteStatus, WriteStatus)> {
@@ -1166,7 +1166,7 @@ fn init_plugins_dir(
     Ok((readme_path, example_path, readme_status, example_status))
 }
 
-/// Resolve the user-supplied CORS origins for `deepseek serve --http`.
+/// Resolve the user-supplied CORS origins for `codewhale serve --http`.
 ///
 /// Sources, in priority order (later sources extend earlier ones):
 /// 1. `--cors-origin URL` flags (repeatable)
@@ -1291,7 +1291,9 @@ fn run_setup(config: &Config, workspace: &Path, args: SetupArgs) -> Result<()> {
                 println!("  · MCP config already exists at {}", mcp_path.display());
             }
         }
-        println!("    Next: edit the file, then run `deepseek mcp list` or `deepseek mcp tools`.");
+        println!(
+            "    Next: edit the file, then run `codewhale mcp list` or `codewhale mcp tools`."
+        );
     }
 
     if run_skills {
@@ -1463,45 +1465,45 @@ fn run_setup_status(config: &Config, workspace: &Path) -> Result<()> {
             let (env_var, login_hint) = match config.api_provider() {
                 crate::config::ApiProvider::NvidiaNim => (
                     "NVIDIA_API_KEY",
-                    "deepseek auth set --provider nvidia-nim --api-key \"...\"",
+                    "codewhale auth set --provider nvidia-nim --api-key \"...\"",
                 ),
                 crate::config::ApiProvider::Openai => (
                     "OPENAI_API_KEY",
-                    "deepseek auth set --provider openai --api-key \"...\"",
+                    "codewhale auth set --provider openai --api-key \"...\"",
                 ),
                 crate::config::ApiProvider::Atlascloud => (
                     "ATLASCLOUD_API_KEY",
-                    "deepseek auth set --provider atlascloud --api-key \"...\"",
+                    "codewhale auth set --provider atlascloud --api-key \"...\"",
                 ),
                 crate::config::ApiProvider::WanjieArk => (
                     "WANJIE_ARK_API_KEY",
-                    "deepseek auth set --provider wanjie-ark --api-key \"...\"",
+                    "codewhale auth set --provider wanjie-ark --api-key \"...\"",
                 ),
                 crate::config::ApiProvider::Openrouter => (
                     "OPENROUTER_API_KEY",
-                    "deepseek auth set --provider openrouter --api-key \"...\"",
+                    "codewhale auth set --provider openrouter --api-key \"...\"",
                 ),
                 crate::config::ApiProvider::Novita => (
                     "NOVITA_API_KEY",
-                    "deepseek auth set --provider novita --api-key \"...\"",
+                    "codewhale auth set --provider novita --api-key \"...\"",
                 ),
                 crate::config::ApiProvider::Fireworks => (
                     "FIREWORKS_API_KEY",
-                    "deepseek auth set --provider fireworks --api-key \"...\"",
+                    "codewhale auth set --provider fireworks --api-key \"...\"",
                 ),
                 crate::config::ApiProvider::Sglang => (
                     "SGLANG_API_KEY",
-                    "deepseek auth set --provider sglang --api-key \"...\"",
+                    "codewhale auth set --provider sglang --api-key \"...\"",
                 ),
                 crate::config::ApiProvider::Vllm => (
                     "VLLM_API_KEY",
-                    "deepseek auth set --provider vllm --api-key \"...\"",
+                    "codewhale auth set --provider vllm --api-key \"...\"",
                 ),
                 crate::config::ApiProvider::Ollama => {
-                    ("OLLAMA_API_KEY", "deepseek auth set --provider ollama")
+                    ("OLLAMA_API_KEY", "codewhale auth set --provider ollama")
                 }
                 crate::config::ApiProvider::Deepseek | crate::config::ApiProvider::DeepseekCN => {
-                    ("DEEPSEEK_API_KEY", "deepseek auth set --provider deepseek")
+                    ("DEEPSEEK_API_KEY", "codewhale auth set --provider deepseek")
                 }
             };
             println!(
@@ -1596,7 +1598,7 @@ fn run_setup_status(config: &Config, workspace: &Path) -> Result<()> {
     println!("  {} {}", "·".dimmed(), dotenv_status_line(workspace));
 
     println!();
-    println!("Run `deepseek doctor --json` for a machine-readable check.");
+    println!("Run `codewhale doctor --json` for a machine-readable check.");
     Ok(())
 }
 
@@ -1664,16 +1666,14 @@ async fn run_doctor(config: &Config, workspace: &Path, config_path_override: Opt
 
     println!(
         "{}",
-        "DeepSeek TUI Doctor"
-            .truecolor(blue_r, blue_g, blue_b)
-            .bold()
+        "codewhale Doctor".truecolor(blue_r, blue_g, blue_b).bold()
     );
     println!("{}", "==================".truecolor(sky_r, sky_g, sky_b));
     println!();
 
     // Version info
     println!("{}", "Version Information:".bold());
-    println!("  deepseek-tui: {}", env!("DEEPSEEK_BUILD_VERSION"));
+    println!("  codewhale-tui: {}", env!("DEEPSEEK_BUILD_VERSION"));
     println!("  rust: {}", rustc_version());
     println!();
 
@@ -1836,7 +1836,7 @@ async fn run_doctor(config: &Config, workspace: &Path, config_path_override: Opt
             "✗".truecolor(red_r, red_g, red_b)
         );
         println!(
-            "    Run 'deepseek auth set --provider <name>' to save a key to ~/.deepseek/config.toml."
+            "    Run 'codewhale auth set --provider <name>' to save a key to ~/.deepseek/config.toml."
         );
         false
     };
@@ -1888,21 +1888,21 @@ async fn run_doctor(config: &Config, workspace: &Path, config_path_override: Opt
                 );
                 if error_msg.contains("401") || error_msg.contains("Unauthorized") {
                     println!(
-                        "    Invalid API key. Check `deepseek auth status`, DEEPSEEK_API_KEY, or config.toml"
+                        "    Invalid API key. Check `codewhale auth status`, DEEPSEEK_API_KEY, or config.toml"
                     );
                     if matches!(api_key_source, ApiKeySource::Keyring) {
                         println!(
                             "    The rejected key came from the OS keyring via the dispatcher."
                         );
                         println!(
-                            "    Run `deepseek auth status` to inspect config/keyring/env sources."
+                            "    Run `codewhale auth status` to inspect config/keyring/env sources."
                         );
                     } else if matches!(api_key_source, ApiKeySource::Env) {
                         println!(
                             "    The rejected key came from DEEPSEEK_API_KEY; no saved config key is present."
                         );
                         println!(
-                            "    Run `deepseek auth set --provider deepseek` to save a config key that overrides stale env."
+                            "    Run `codewhale auth set --provider deepseek` to save a config key that overrides stale env."
                         );
                     }
                 } else if error_msg.contains("403") || error_msg.contains("Forbidden") {
@@ -2004,7 +2004,7 @@ async fn run_doctor(config: &Config, workspace: &Path, config_path_override: Opt
             "·".dimmed(),
             crate::utils::display_path(&mcp_config_path)
         );
-        println!("    Run `deepseek mcp init` or `deepseek setup --mcp`.");
+        println!("    Run `codewhale mcp init` or `codewhale setup --mcp`.");
     }
 
     // Skills configuration
@@ -2134,7 +2134,7 @@ async fn run_doctor(config: &Config, workspace: &Path, config_path_override: Opt
             .is_some_and(|dir| dir.exists())
         && !global_skills_dir.exists()
     {
-        println!("    Run `deepseek setup --skills` (or add --local for ./skills).");
+        println!("    Run `codewhale setup --skills` (or add --local for ./skills).");
     }
 
     // Tools directory
@@ -2155,7 +2155,7 @@ async fn run_doctor(config: &Config, workspace: &Path, config_path_override: Opt
             "·".dimmed(),
             crate::utils::display_path(&tools_dir)
         );
-        println!("    Run `deepseek setup --tools` to scaffold a starter dir.");
+        println!("    Run `codewhale setup --tools` to scaffold a starter dir.");
     }
 
     // Plugins directory
@@ -2176,7 +2176,7 @@ async fn run_doctor(config: &Config, workspace: &Path, config_path_override: Opt
             "·".dimmed(),
             crate::utils::display_path(&plugins_dir)
         );
-        println!("    Run `deepseek setup --plugins` to scaffold a starter dir.");
+        println!("    Run `codewhale setup --plugins` to scaffold a starter dir.");
     }
 
     // Storage surfaces (#422 / #440 / #500)
@@ -2707,7 +2707,7 @@ fn run_doctor_json(
         },
         "api_connectivity": {
             "checked": false,
-            "note": "Skipped in --json mode; run `deepseek doctor` for a live check.",
+            "note": "Skipped in --json mode; run `codewhale doctor` for a live check.",
         },
         "capability": provider_capability_report(config),
     });
@@ -2844,7 +2844,7 @@ fn doctor_timeout_recovery_lines(config: &Config) -> Vec<String> {
                 && !target.base_url.contains("api.deepseeki.com") =>
         {
             lines.push(
-                "If this is a custom DeepSeek-compatible endpoint, set its HTTPS base URL in ~/.deepseek/config.toml and rerun `deepseek doctor`."
+                "If this is a custom DeepSeek-compatible endpoint, set its HTTPS base URL in ~/.deepseek/config.toml and rerun `codewhale doctor`."
                     .to_string(),
             );
         }
@@ -2863,7 +2863,7 @@ fn doctor_timeout_recovery_lines(config: &Config) -> Vec<String> {
     }
 
     lines.push(
-        "Run `deepseek doctor --json` and include `base_url`, `default_text_model`, and `api_connectivity` when filing an issue."
+        "Run `codewhale doctor --json` and include `base_url`, `default_text_model`, and `api_connectivity` when filing an issue."
             .to_string(),
     );
     lines
@@ -2987,7 +2987,7 @@ fn list_sessions(limit: usize, search: Option<String>) -> Result<()> {
         println!("{}", "No sessions found.".truecolor(sky_r, sky_g, sky_b));
         println!(
             "Start a new session with: {}",
-            "deepseek".truecolor(blue_r, blue_g, blue_b)
+            "codewhale".truecolor(blue_r, blue_g, blue_b)
         );
         return Ok(());
     }
@@ -3020,12 +3020,12 @@ fn list_sessions(limit: usize, search: Option<String>) -> Result<()> {
     println!();
     println!(
         "Resume with: {} {}",
-        "deepseek --resume".truecolor(blue_r, blue_g, blue_b),
+        "codewhale --resume".truecolor(blue_r, blue_g, blue_b),
         "<session-id>".dimmed()
     );
     println!(
         "Continue latest in this workspace: {}",
-        "deepseek --continue".truecolor(blue_r, blue_g, blue_b)
+        "codewhale --continue".truecolor(blue_r, blue_g, blue_b)
     );
 
     Ok(())
@@ -3062,7 +3062,7 @@ fn init_project() -> Result<()> {
             );
             println!();
             println!("Edit this file to customize how the AI agent works with your project.");
-            println!("The instructions will be loaded automatically when you run deepseek.");
+            println!("The instructions will be loaded automatically when you run codewhale.");
         }
         Err(e) => {
             println!(
@@ -3126,7 +3126,7 @@ fn resolve_session_id(session_id: Option<String>, last: bool, workspace: &Path)
     if last {
         return latest_session_id_for_workspace(workspace)?.ok_or_else(|| {
             anyhow!(
-                "No saved sessions found for workspace {}. Use `deepseek sessions` to list all sessions, or `deepseek resume <SESSION_ID>` to resume one explicitly.",
+                "No saved sessions found for workspace {}. Use `codewhale sessions` to list all sessions, or `codewhale resume <SESSION_ID>` to resume one explicitly.",
                 workspace.display()
             )
         });
@@ -3289,7 +3289,7 @@ Provide findings ordered by severity with file references, then open questions,
     Ok(())
 }
 
-/// `deepseek pr <N>` (#451) — fetch a GitHub PR via `gh`, format
+/// `codewhale pr <N>` (#451) — fetch a GitHub PR via `gh`, format
 /// title + body + diff as the composer's first message, and launch
 /// the interactive TUI. Falls back gracefully if `gh` is missing.
 async fn run_pr(
@@ -3303,7 +3303,7 @@ async fn run_pr(
         bail!(
             "`gh` CLI not found on PATH. Install GitHub CLI \
              (https://cli.github.com) and authenticate (`gh auth login`) \
-             so `deepseek pr <N>` can fetch PR metadata and the diff."
+             so `codewhale pr <N>` can fetch PR metadata and the diff."
         );
     }
 
@@ -3583,7 +3583,7 @@ async fn run_mcp_command(config: &Config, command: McpCommand) -> Result<()> {
                     );
                 }
             }
-            println!("Edit the file, then run `deepseek mcp list` or `deepseek mcp tools`.");
+            println!("Edit the file, then run `codewhale mcp list` or `codewhale mcp tools`.");
             Ok(())
         }
         McpCommand::List => {
@@ -3763,7 +3763,7 @@ async fn run_mcp_command(config: &Config, command: McpCommand) -> Result<()> {
             let mut cfg = load_mcp_config(&config_path)?;
             if cfg.servers.contains_key(&name) {
                 bail!(
-                    "MCP server '{name}' already exists in {}. Use `deepseek mcp remove {name}` first, or choose a different --name.",
+                    "MCP server '{name}' already exists in {}. Use `codewhale mcp remove {name}` first, or choose a different --name.",
                     config_path.display()
                 );
             }
@@ -3796,8 +3796,8 @@ async fn run_mcp_command(config: &Config, command: McpCommand) -> Result<()> {
                 workspace.map_or(String::new(), |ws| format!(" --workspace {ws}"))
             );
             println!();
-            println!("Tip: Use `deepseek mcp validate` to test the connection.");
-            println!("     Use `deepseek serve --http` for the HTTP/SSE runtime API instead.");
+            println!("Tip: Use `codewhale mcp validate` to test the connection.");
+            println!("     Use `codewhale serve --http` for the HTTP/SSE runtime API instead.");
             Ok(())
         }
     }
@@ -4119,7 +4119,7 @@ fn checkpoint_age_label(age: std::time::Duration) -> String {
 /// **The checkpoint's workspace must also match the resolved launch workspace
 /// after canonicalisation.** If the workspace doesn't match, the checkpoint is
 /// persisted as a regular session (so the user can find it via
-/// `deepseek sessions` / `deepseek resume <id>`) and cleared, but not loaded.
+/// `codewhale sessions` / `codewhale resume <id>`) and cleared, but not loaded.
 fn recover_interrupted_checkpoint_for_resume(launch_workspace: &Path) -> Option<String> {
     let manager = session_manager::SessionManager::default_location().ok()?;
     let (session, age) = load_recent_checkpoint(&manager)?;
@@ -4133,7 +4133,7 @@ fn recover_interrupted_checkpoint_for_resume(launch_workspace: &Path) -> Option<
         session_manager::workspace_scope_matches(&session_workspace, launch_workspace);
 
     if !workspace_matches {
-        // Persist the checkpoint so the user can find it via `deepseek
+        // Persist the checkpoint so the user can find it via `codewhale
         // sessions`, then clear it so the next launch in this folder doesn't
         // re-trip the nag. Print a one-line notice pointing at the explicit
         // resume command — but DO NOT auto-load the session here.
@@ -4141,7 +4141,7 @@ fn recover_interrupted_checkpoint_for_resume(launch_workspace: &Path) -> Option<
         let _ = manager.clear_checkpoint();
         eprintln!(
             "Note: an interrupted session from another workspace ({}) is \
-             available. Run `deepseek sessions` to list saved sessions. Starting \
+             available. Run `codewhale sessions` to list saved sessions. Starting \
              fresh in {}.",
             session_workspace.display(),
             launch_workspace.display(),
@@ -4166,7 +4166,7 @@ fn recover_interrupted_checkpoint_for_resume(launch_workspace: &Path) -> Option<
 }
 
 /// Preserve an interrupted checkpoint on a normal fresh launch without
-/// attaching it to the new TUI instance. This keeps "open another deepseek in
+/// attaching it to the new TUI instance. This keeps "open another codewhale in
 /// the same folder" from re-entering the previous in-flight session while still
 /// leaving an explicit resume path.
 fn preserve_interrupted_checkpoint_for_explicit_resume(launch_workspace: &Path) {
@@ -4185,12 +4185,12 @@ fn preserve_interrupted_checkpoint_for_explicit_resume(launch_workspace: &Path)
     if session_manager::workspace_scope_matches(&session_workspace, launch_workspace) {
         eprintln!(
             "Found an in-flight session snapshot ({age_str}). Starting a new \
-             session. Run `deepseek --continue` to resume it."
+             session. Run `codewhale --continue` to resume it."
         );
     } else {
         eprintln!(
             "Note: an interrupted session from another workspace ({}) is \
-             available. Run `deepseek sessions` to list saved sessions. Starting \
+             available. Run `codewhale sessions` to list saved sessions. Starting \
              fresh in {}.",
             session_workspace.display(),
             launch_workspace.display(),
@@ -5205,7 +5205,7 @@ mod doctor_endpoint_tests {
         assert!(text.contains("api.deepseek.com"));
         assert!(text.contains("custom DeepSeek-compatible endpoint"));
         assert!(!text.contains("provider = \"deepseek-cn\""));
-        assert!(text.contains("deepseek doctor --json"));
+        assert!(text.contains("codewhale doctor --json"));
     }
 
     #[test]
@@ -5234,19 +5234,19 @@ mod terminal_mode_tests {
 
     #[test]
     fn prompt_flag_accepts_split_prompt_words_for_windows_cmd_shims() {
-        let cli = parse_cli(&["deepseek", "-p", "hello", "world"]);
+        let cli = parse_cli(&["codewhale", "-p", "hello", "world"]);
 
         assert_eq!(cli.prompt, vec!["hello", "world"]);
     }
 
     #[test]
     fn companion_binary_reports_its_own_name() {
-        assert_eq!(Cli::command().get_name(), "deepseek-tui");
+        assert_eq!(Cli::command().get_name(), "codewhale-tui");
     }
 
     #[test]
     fn exec_accepts_split_prompt_words_for_windows_cmd_shims() {
-        let cli = parse_cli(&["deepseek", "exec", "hello", "world"]);
+        let cli = parse_cli(&["codewhale", "exec", "hello", "world"]);
         let Some(Commands::Exec(args)) = cli.command else {
             panic!("expected exec command");
         };
@@ -5256,7 +5256,7 @@ mod terminal_mode_tests {
 
     #[test]
     fn exec_keeps_flags_before_split_prompt_words() {
-        let cli = parse_cli(&["deepseek", "exec", "--json", "hello", "world"]);
+        let cli = parse_cli(&["codewhale", "exec", "--json", "hello", "world"]);
         let Some(Commands::Exec(args)) = cli.command else {
             panic!("expected exec command");
         };
@@ -5268,7 +5268,7 @@ mod terminal_mode_tests {
     #[test]
     fn exec_accepts_resume_session_flags_for_harnesses() {
         let cli = parse_cli(&[
-            "deepseek",
+            "codewhale",
             "exec",
             "--resume",
             "abc123",
@@ -5287,7 +5287,7 @@ mod terminal_mode_tests {
 
     #[test]
     fn exec_accepts_session_id_alias() {
-        let cli = parse_cli(&["deepseek", "exec", "--session-id", "abc123", "follow up"]);
+        let cli = parse_cli(&["codewhale", "exec", "--session-id", "abc123", "follow up"]);
         let Some(Commands::Exec(args)) = cli.command else {
             panic!("expected exec command");
         };
@@ -5298,7 +5298,7 @@ mod terminal_mode_tests {
 
     #[test]
     fn exec_accepts_continue_for_latest_workspace_session() {
-        let cli = parse_cli(&["deepseek", "exec", "--continue", "follow up"]);
+        let cli = parse_cli(&["codewhale", "exec", "--continue", "follow up"]);
         let Some(Commands::Exec(args)) = cli.command else {
             panic!("expected exec command");
         };
@@ -5309,7 +5309,7 @@ mod terminal_mode_tests {
     #[test]
     fn exec_json_conflicts_with_stream_json_output() {
         let err = Cli::try_parse_from([
-            "deepseek",
+            "codewhale",
             "exec",
             "--json",
             "--output-format",
@@ -5337,7 +5337,7 @@ mod terminal_mode_tests {
 
     #[test]
     fn alternate_screen_defaults_on_in_auto_mode() {
-        let cli = parse_cli(&["deepseek"]);
+        let cli = parse_cli(&["codewhale"]);
         let config = Config::default();
 
         assert!(should_use_alt_screen(&cli, &config));
@@ -5345,7 +5345,7 @@ mod terminal_mode_tests {
 
     #[test]
     fn no_alt_screen_flag_is_accepted_but_keeps_alternate_screen() {
-        let cli = parse_cli(&["deepseek", "--no-alt-screen"]);
+        let cli = parse_cli(&["codewhale", "--no-alt-screen"]);
         let config = Config::default();
 
         assert!(should_use_alt_screen(&cli, &config));
@@ -5353,7 +5353,7 @@ mod terminal_mode_tests {
 
     #[test]
     fn config_never_is_accepted_but_keeps_alternate_screen() {
-        let cli = parse_cli(&["deepseek"]);
+        let cli = parse_cli(&["codewhale"]);
         let config = Config {
             tui: Some(crate::config::TuiConfig {
                 alternate_screen: Some("never".to_string()),
@@ -5373,7 +5373,7 @@ mod terminal_mode_tests {
     #[test]
     #[cfg(not(windows))]
     fn mouse_capture_defaults_on_when_alternate_screen_is_active() {
-        let cli = parse_cli(&["deepseek"]);
+        let cli = parse_cli(&["codewhale"]);
         let config = Config::default();
 
         assert!(should_use_mouse_capture_with(
@@ -5387,7 +5387,7 @@ mod terminal_mode_tests {
         // Legacy conhost (no `WT_SESSION` and no `ConEmuPID`) keeps the
         // v0.8.x default-off behavior: mouse-mode reporting on legacy console
         // can leak SGR escapes into the composer.
-        let cli = parse_cli(&["deepseek"]);
+        let cli = parse_cli(&["codewhale"]);
         let config = Config::default();
 
         assert!(!should_use_mouse_capture_with(
@@ -5403,7 +5403,7 @@ mod terminal_mode_tests {
     #[test]
     #[cfg(windows)]
     fn mouse_capture_defaults_on_in_windows_terminal() {
-        let cli = parse_cli(&["deepseek"]);
+        let cli = parse_cli(&["codewhale"]);
         let config = Config::default();
 
         assert!(should_use_mouse_capture_with(
@@ -5421,7 +5421,7 @@ mod terminal_mode_tests {
     #[test]
     #[cfg(windows)]
     fn mouse_capture_defaults_on_in_conemu() {
-        let cli = parse_cli(&["deepseek"]);
+        let cli = parse_cli(&["codewhale"]);
         let config = Config::default();
 
         assert!(should_use_mouse_capture_with(
@@ -5436,7 +5436,7 @@ mod terminal_mode_tests {
 
     #[test]
     fn no_mouse_capture_flag_disables_mouse_capture() {
-        let cli = parse_cli(&["deepseek", "--no-mouse-capture"]);
+        let cli = parse_cli(&["codewhale", "--no-mouse-capture"]);
         let config = Config::default();
 
         assert!(!should_use_mouse_capture_with(
@@ -5446,7 +5446,7 @@ mod terminal_mode_tests {
 
     #[test]
     fn config_can_disable_default_mouse_capture() {
-        let cli = parse_cli(&["deepseek"]);
+        let cli = parse_cli(&["codewhale"]);
         let config = Config {
             tui: Some(crate::config::TuiConfig {
                 alternate_screen: None,
@@ -5467,7 +5467,7 @@ mod terminal_mode_tests {
 
     #[test]
     fn mouse_capture_flag_enables_mouse_capture() {
-        let cli = parse_cli(&["deepseek", "--mouse-capture"]);
+        let cli = parse_cli(&["codewhale", "--mouse-capture"]);
         let config = Config::default();
 
         assert!(should_use_mouse_capture_with(
@@ -5477,7 +5477,7 @@ mod terminal_mode_tests {
 
     #[test]
     fn config_can_enable_mouse_capture() {
-        let cli = parse_cli(&["deepseek"]);
+        let cli = parse_cli(&["codewhale"]);
         let config = Config {
             tui: Some(crate::config::TuiConfig {
                 alternate_screen: None,
@@ -5498,7 +5498,7 @@ mod terminal_mode_tests {
 
     #[test]
     fn mouse_capture_is_off_without_alternate_screen() {
-        let cli = parse_cli(&["deepseek", "--mouse-capture"]);
+        let cli = parse_cli(&["codewhale", "--mouse-capture"]);
         let config = Config::default();
 
         assert!(!should_use_mouse_capture_with(
@@ -5515,7 +5515,7 @@ mod terminal_mode_tests {
 
     #[test]
     fn mouse_capture_defaults_off_in_jetbrains_jediterm() {
-        let cli = parse_cli(&["deepseek"]);
+        let cli = parse_cli(&["codewhale"]);
         let config = Config::default();
 
         assert!(!should_use_mouse_capture_with(
@@ -5530,7 +5530,7 @@ mod terminal_mode_tests {
 
     #[test]
     fn jetbrains_default_off_is_case_insensitive() {
-        let cli = parse_cli(&["deepseek"]);
+        let cli = parse_cli(&["codewhale"]);
         let config = Config::default();
 
         // JetBrains has occasionally varied the casing across releases;
@@ -5547,7 +5547,7 @@ mod terminal_mode_tests {
 
     #[test]
     fn mouse_capture_flag_overrides_jetbrains_default() {
-        let cli = parse_cli(&["deepseek", "--mouse-capture"]);
+        let cli = parse_cli(&["codewhale", "--mouse-capture"]);
         let config = Config::default();
 
         assert!(should_use_mouse_capture_with(
@@ -5562,7 +5562,7 @@ mod terminal_mode_tests {
 
     #[test]
     fn config_mouse_capture_true_overrides_jetbrains_default() {
-        let cli = parse_cli(&["deepseek"]);
+        let cli = parse_cli(&["codewhale"]);
         let config = Config {
             tui: Some(crate::config::TuiConfig {
                 alternate_screen: None,
@@ -5782,24 +5782,24 @@ max_subagents = -3
     fn project_overlay_skips_missing_config_file() {
         let tmp = tempdir().expect("tempdir");
         let mut config = Config {
-            provider: Some("deepseek".to_string()),
+            provider: Some("codewhale".to_string()),
             ..Config::default()
         };
         merge_project_config(&mut config, tmp.path());
         // Untouched.
-        assert_eq!(config.provider.as_deref(), Some("deepseek"));
+        assert_eq!(config.provider.as_deref(), Some("codewhale"));
     }
 
     #[test]
     fn project_overlay_skips_malformed_toml() {
         let tmp = workspace_with_project_config("this is not valid TOML !!");
         let mut config = Config {
-            provider: Some("deepseek".to_string()),
+            provider: Some("codewhale".to_string()),
             ..Config::default()
         };
         merge_project_config(&mut config, tmp.path());
         // Untouched on parse error — better to fall back to global than crash.
-        assert_eq!(config.provider.as_deref(), Some("deepseek"));
+        assert_eq!(config.provider.as_deref(), Some("codewhale"));
     }
 
     #[test]
@@ -5811,13 +5811,13 @@ model = ""
 "#,
         );
         let mut config = Config {
-            provider: Some("deepseek".to_string()),
+            provider: Some("codewhale".to_string()),
             default_text_model: Some("deepseek-v4-pro".to_string()),
             ..Config::default()
         };
         merge_project_config(&mut config, tmp.path());
         // Empty strings are ignored — they're rarely a deliberate override.
-        assert_eq!(config.provider.as_deref(), Some("deepseek"));
+        assert_eq!(config.provider.as_deref(), Some("codewhale"));
         assert_eq!(
             config.default_text_model.as_deref(),
             Some("deepseek-v4-pro")
@@ -5958,7 +5958,7 @@ mod doctor_mcp_tests {
 
     #[test]
     fn test_self_hosted_absolute_is_ok() {
-        let server = make_server(Some("/usr/local/bin/deepseek"), &["serve", "--mcp"], None);
+        let server = make_server(Some("/usr/local/bin/codewhale"), &["serve", "--mcp"], None);
         match doctor_check_mcp_server(&server) {
             McpServerDoctorStatus::Ok(detail) | McpServerDoctorStatus::Error(detail) => {
                 // On systems where the path doesn't exist, this will be Error.
@@ -5976,7 +5976,7 @@ mod doctor_mcp_tests {
 
     #[test]
     fn test_self_hosted_relative_is_warning() {
-        let server = make_server(Some("deepseek"), &["serve", "--mcp"], None);
+        let server = make_server(Some("codewhale"), &["serve", "--mcp"], None);
         match doctor_check_mcp_server(&server) {
             McpServerDoctorStatus::Warning(detail) => {
                 assert!(detail.contains("relative"));
@@ -6461,7 +6461,7 @@ mod pr_prompt_tests {
         // A deliberately-implausible name to confirm the negative
         // branch — `--version` on this would exec(3) → ENOENT.
         assert!(
-            !is_command_available("this-command-cannot-exist-deepseek-tui-test-ENOENT-marker"),
+            !is_command_available("this-command-cannot-exist-codewhale-tui-test-ENOENT-marker"),
             "missing command should return false, not panic"
         );
     }
diff --git a/crates/tui/src/mcp.rs b/crates/tui/src/mcp.rs
index d25c0734..e9c60406 100644
--- a/crates/tui/src/mcp.rs
+++ b/crates/tui/src/mcp.rs
@@ -1328,7 +1328,7 @@ impl McpConnection {
             "params": {
                 "protocolVersion": "2024-11-05",
                 "clientInfo": {
-                    "name": "deepseek-tui",
+                    "name": "codewhale-tui",
                     "version": env!("CARGO_PKG_VERSION")
                 },
                 "capabilities": {
@@ -3343,7 +3343,7 @@ mod tests {
             r#"{
                 "mcpServers": {
                     "broken": {
-                        "command": "deepseek-tui-test-this-binary-does-not-exist-9f8e7d6c5b4a",
+                        "command": "codewhale-tui-test-this-binary-does-not-exist-9f8e7d6c5b4a",
                         "args": []
                     }
                 }
diff --git a/crates/tui/src/prompts.rs b/crates/tui/src/prompts.rs
index f801ed59..912ab283 100644
--- a/crates/tui/src/prompts.rs
+++ b/crates/tui/src/prompts.rs
@@ -277,7 +277,7 @@ pub(crate) fn locale_reinforcement_closer(locale_tag: &str) -> Option<&'static s
 }
 
 const LOCALE_PREAMBLE_ZH_HANS: &str = "## 语言要求\n\n\
-你正在 DeepSeek TUI 中运行。无论任务上下文（代码、错误日志、文件名）\
+你正在 codewhale 中运行。无论任务上下文（代码、错误日志、文件名）\
 是英文，无论系统提示的其余部分是英文，你都必须用简体中文进行 \
 `reasoning_content`（内部思考）和最终回复。代码、文件路径、工具名称\
 （例如 `read_file`、`exec_shell`）、环境变量、命令行参数和 URL \
@@ -286,7 +286,7 @@ const LOCALE_PREAMBLE_ZH_HANS: &str = "## 语言要求\n\n\
 如果用户明确要求（例如 \"think in English\"），则覆盖此规则。";
 
 const LOCALE_PREAMBLE_JA: &str = "## 言語要件\n\n\
-DeepSeek TUI を実行しています。タスクコンテキスト（コード、エラーログ、\
+codewhale を実行しています。タスクコンテキスト（コード、エラーログ、\
 ファイル名）が英語であっても、システムプロンプトの他の部分が英語で\
 あっても、`reasoning_content`（内部思考）と最終的な返信は日本語で\
 行ってください。コード、ファイルパス、ツール名（例：`read_file`、\
@@ -297,7 +297,7 @@ DeepSeek TUI を実行しています。タスクコンテキスト（コード
 \"think in English\"）はこのルールを上書きします。";
 
 const LOCALE_PREAMBLE_PT_BR: &str = "## Requisito de Idioma\n\n\
-Você está rodando dentro do DeepSeek TUI. Escreva tanto \
+Você está rodando dentro do codewhale. Escreva tanto \
 `reasoning_content` (seu pensamento interno) quanto a resposta final \
 em português do Brasil, mesmo quando o contexto da tarefa (código, \
 logs de erro, nomes de arquivos) estiver em inglês e mesmo quando o \
@@ -888,7 +888,7 @@ mod tests {
             SystemPrompt::Blocks(_) => panic!("expected text system prompt"),
         };
         let preamble_marker = "## 语言要求";
-        let base_marker = "You are DeepSeek TUI";
+        let base_marker = "You are codewhale";
         let preamble_pos = text
             .find(preamble_marker)
             .expect("zh-Hans preamble should be present");
@@ -1262,7 +1262,7 @@ mod tests {
     fn compose_prompt_includes_all_layers() {
         let prompt = compose_prompt(AppMode::Agent, Personality::Calm);
         // Base layer
-        assert!(prompt.contains("You are DeepSeek TUI"));
+        assert!(prompt.contains("You are codewhale"));
         // Personality layer
         assert!(prompt.contains("Personality: Calm"));
         // Mode layer
@@ -1321,7 +1321,7 @@ mod tests {
     #[test]
     fn compose_prompt_deterministic_order() {
         let prompt = compose_prompt(AppMode::Yolo, Personality::Calm);
-        let base_pos = prompt.find("You are DeepSeek TUI").unwrap();
+        let base_pos = prompt.find("You are codewhale").unwrap();
         let personality_pos = prompt.find("Personality: Calm").unwrap();
         let mode_pos = prompt.find("Mode: YOLO").unwrap();
         let approval_pos = prompt.find("Approval Policy: Auto").unwrap();
@@ -1581,7 +1581,7 @@ mod tests {
     fn subagent_done_sentinel_section_present() {
         let prompt = compose_prompt(AppMode::Agent, Personality::Calm);
         assert!(prompt.contains("Internal Sub-agent Completion Events"));
-        assert!(prompt.contains("<deepseek:subagent.done>"));
+        assert!(prompt.contains("<codewhale:subagent.done>"));
         assert!(prompt.contains("not user input"));
         assert!(prompt.contains("Integration protocol"));
         assert!(prompt.contains("Do not tell the user they pasted sentinels"));
diff --git a/crates/tui/src/prompts/agent.txt b/crates/tui/src/prompts/agent.txt
index 42ee3301..42ab337f 100644
--- a/crates/tui/src/prompts/agent.txt
+++ b/crates/tui/src/prompts/agent.txt
@@ -11,6 +11,6 @@ flow.
 ## Sub-agent completion sentinel
 
 When you open a sub-agent via `agent_open`, the child runs independently.
-You will receive a `<deepseek:subagent.done>` element in the transcript when it finishes.
+You will receive a `<codewhale:subagent.done>` element in the transcript when it finishes.
 Read its `summary` field and integrate the work — do not re-do what the child already did.
 You can also call `agent_eval` with the agent name or id to pull the current structured projection or transcript handle.
diff --git a/crates/tui/src/prompts/base.md b/crates/tui/src/prompts/base.md
index 0180f5f8..4e342bdb 100644
--- a/crates/tui/src/prompts/base.md
+++ b/crates/tui/src/prompts/base.md
@@ -1,4 +1,4 @@
-You are DeepSeek TUI. You're already running inside it. Do not launch a nested interactive `deepseek` or `deepseek-tui` session unless the user explicitly asks. Using `deepseek` CLI subcommands such as `deepseek --version`, `deepseek -p`, `deepseek doctor`, or `deepseek auth status` is allowed when it directly helps the task.
+You are codewhale. You're already running inside it. Do not launch a nested interactive `codewhale` or `codewhale-tui` session unless the user explicitly asks. Using `codewhale` CLI subcommands such as `codewhale --version`, `codewhale -p`, `codewhale doctor`, or `codewhale auth status` is allowed when it directly helps the task.
 
 ## Language
 
@@ -14,7 +14,7 @@ Code, file paths, identifiers, tool names, environment variables, command-line f
 
 ## Runtime Identity
 
-If the user asks what DeepSeek TUI version you are running, use the `deepseek_version` field in the `## Environment` section as the runtime version. Workspace files such as `Cargo.toml` describe the checkout you are inspecting; they may be stale, dirty, or intentionally different from the installed runtime. If those disagree, report both instead of replacing the runtime version with the workspace version.
+If the user asks what codewhale version you are running, use the `deepseek_version` field in the `## Environment` section as the runtime version. Workspace files such as `Cargo.toml` describe the checkout you are inspecting; they may be stale, dirty, or intentionally different from the installed runtime. If those disagree, report both instead of replacing the runtime version with the workspace version.
 
 ## Preamble Rhythm
 
@@ -203,7 +203,7 @@ Use persistent RLM sessions for long-context semantic work, bulk classification/
 
 ## Internal Sub-agent Completion Events
 
-When you open a sub-agent via `agent_open`, the child runs independently. The runtime may send you an internal `<deepseek:subagent.done>` completion event when it finishes. This event is not user input. It carries:
+When you open a sub-agent via `agent_open`, the child runs independently. The runtime may send you an internal `<codewhale:subagent.done>` completion event when it finishes. This event is not user input. It carries:
 
 - `agent_id` — the child's identifier
 - `status` — `"completed"` or `"failed"`
@@ -211,14 +211,14 @@ When you open a sub-agent via `agent_open`, the child runs independently. The ru
 - `details` — currently `agent_eval`, the tool to call when you need the full projection or transcript handle
 
 **Integration protocol:**
-1. When you see `<deepseek:subagent.done>`, read the human summary line immediately before it first.
+1. When you see `<codewhale:subagent.done>`, read the human summary line immediately before it first.
 2. Integrate the child's findings into your work — do not re-do what the child already did.
 3. If the summary is insufficient, call `agent_eval` with the agent name or id to pull the current structured projection or transcript handle.
 4. If the child failed (`"failed"`), assess whether the failure blocks your plan or whether you can proceed with a fallback.
 5. Update your `checklist_write` items to reflect the child's contribution.
 6. Do not tell the user they pasted sentinels or explain this protocol unless they explicitly ask about sub-agent internals.
 
-You may see multiple `<deepseek:subagent.done>` sentinels in a single turn when children were opened in parallel. Process each one, then synthesize.
+You may see multiple `<codewhale:subagent.done>` sentinels in a single turn when children were opened in parallel. Process each one, then synthesize.
 
 ## Output formatting
 
diff --git a/crates/tui/src/prompts/base.txt b/crates/tui/src/prompts/base.txt
index a38f9e73..58f03268 100644
--- a/crates/tui/src/prompts/base.txt
+++ b/crates/tui/src/prompts/base.txt
@@ -1,4 +1,4 @@
-You are DeepSeek TUI. You're already running inside it. Do not launch a nested interactive `deepseek` or `deepseek-tui` session unless the user explicitly asks. Using `deepseek` CLI subcommands such as `deepseek --version`, `deepseek -p`, `deepseek doctor`, or `deepseek auth status` is allowed when it directly helps the task.
+You are codewhale. You're already running inside it. Do not launch a nested interactive `codewhale` or `codewhale-tui` session unless the user explicitly asks. Using `codewhale` CLI subcommands such as `codewhale --version`, `codewhale -p`, `codewhale doctor`, or `codewhale auth status` is allowed when it directly helps the task.
 
 ## Decomposition Philosophy
 
diff --git a/crates/tui/src/tools/subagent/mod.rs b/crates/tui/src/tools/subagent/mod.rs
index 25d6a85c..0ac510cf 100644
--- a/crates/tui/src/tools/subagent/mod.rs
+++ b/crates/tui/src/tools/subagent/mod.rs
@@ -607,7 +607,7 @@ pub const DEFAULT_MAX_SPAWN_DEPTH: u32 = 3;
 
 /// Terminal-state notification emitted to the engine's parent turn loop
 /// when one of its direct children finishes (issue #756). Carries the
-/// already-rendered `<deepseek:subagent.done>` sentinel that the model
+/// already-rendered `<codewhale:subagent.done>` sentinel that the model
 /// expects in the transcript per `prompts/base.md`.
 #[derive(Debug, Clone)]
 pub struct SubAgentCompletion {
@@ -3308,12 +3308,12 @@ fn build_initial_subagent_messages(
             .filter(|state| !state.is_empty())
         {
             messages.push(system_text_message(format!(
-                "<deepseek:fork_state>\n{state}\n</deepseek:fork_state>"
+                "<codewhale:fork_state>\n{state}\n</codewhale:fork_state>"
             )));
         }
 
         messages.push(system_text_message(format!(
-            "<deepseek:subagent_context>\n{}\n</deepseek:subagent_context>",
+            "<codewhale:subagent_context>\n{}\n</codewhale:subagent_context>",
             build_subagent_system_prompt(agent_type, assignment)
         )));
     }
@@ -3381,7 +3381,7 @@ async fn run_subagent_task(task: SubAgentTask) {
     // sidebar / cell) AND a structured sentinel the model can recognize
     // on its next turn. Format: human summary on the first line,
     // sentinel on the second. The sentinel uses an opaque tag
-    // (`deepseek:subagent.done`) to avoid collision with normal user
+    // (`codewhale:subagent.done`) to avoid collision with normal user
     // text.
     let (summary, sentinel) = match &result {
         Ok(res) => (
@@ -3448,7 +3448,7 @@ pub(crate) fn emit_parent_completion(
     true
 }
 
-/// Build a `<deepseek:subagent.done>` JSON sentinel for a successful child.
+/// Build a `<codewhale:subagent.done>` JSON sentinel for a successful child.
 /// Intended to surface in the parent's transcript so the model recognizes
 /// child completion and can decide whether to read the full result via
 /// `agent_eval`.
@@ -3465,10 +3465,10 @@ fn subagent_done_sentinel(agent_id: &str, res: &SubAgentResult) -> String {
         "summary_location": "previous_line",
         "details": "agent_eval",
     });
-    format!("<deepseek:subagent.done>{payload}</deepseek:subagent.done>")
+    format!("<codewhale:subagent.done>{payload}</codewhale:subagent.done>")
 }
 
-/// Build a `<deepseek:subagent.done>` sentinel for a failed child.
+/// Build a `<codewhale:subagent.done>` sentinel for a failed child.
 fn subagent_failed_sentinel(agent_id: &str, _err: &str) -> String {
     let payload = json!({
         "agent_id": agent_id,
@@ -3476,7 +3476,7 @@ fn subagent_failed_sentinel(agent_id: &str, _err: &str) -> String {
         "error_location": "previous_line",
         "details": "agent_eval",
     });
-    format!("<deepseek:subagent.done>{payload}</deepseek:subagent.done>")
+    format!("<codewhale:subagent.done>{payload}</codewhale:subagent.done>")
 }
 
 #[allow(clippy::too_many_arguments)]
@@ -4412,7 +4412,7 @@ async fn subagent_flash_router(
 }
 
 const SUBAGENT_ROUTER_SYSTEM_PROMPT: &str = "\
-You are the DeepSeek TUI sub-agent routing manager. Return only compact JSON: \
+You are the codewhale sub-agent routing manager. Return only compact JSON: \
 {\"model\":\"deepseek-v4-flash|deepseek-v4-pro\",\"thinking\":\"off|high|max\"}. \
 Treat each child assignment like a customer request entering a team queue: decide the least \
 sufficient worker and thinking budget for that assignment. Do not treat being a sub-agent as \
diff --git a/crates/tui/src/tools/subagent/tests.rs b/crates/tui/src/tools/subagent/tests.rs
index 30b3494d..58a42d9d 100644
--- a/crates/tui/src/tools/subagent/tests.rs
+++ b/crates/tui/src/tools/subagent/tests.rs
@@ -472,9 +472,9 @@ fn forked_subagent_messages_preserve_parent_prefix_then_append_task() {
     assert_eq!(messages.first(), Some(&parent_message));
     assert_eq!(messages.len(), 4);
     assert_eq!(messages[1].role, "system");
-    assert!(message_text(&messages[1]).contains("<deepseek:fork_state>"));
+    assert!(message_text(&messages[1]).contains("<codewhale:fork_state>"));
     assert_eq!(messages[2].role, "system");
-    assert!(message_text(&messages[2]).contains("<deepseek:subagent_context>"));
+    assert!(message_text(&messages[2]).contains("<codewhale:subagent_context>"));
     assert_eq!(messages[3].role, "user");
     assert!(message_text(&messages[3]).contains("inspect parser"));
 }
@@ -1152,13 +1152,13 @@ fn build_subagent_system_prompt_skips_role_when_blank() {
 fn subagent_done_sentinel_format_is_well_formed() {
     let res = make_snapshot(SubAgentStatus::Completed);
     let sentinel = subagent_done_sentinel("agent_xyz", &res);
-    assert!(sentinel.starts_with("<deepseek:subagent.done>"));
-    assert!(sentinel.ends_with("</deepseek:subagent.done>"));
+    assert!(sentinel.starts_with("<codewhale:subagent.done>"));
+    assert!(sentinel.ends_with("</codewhale:subagent.done>"));
 
     // The inner JSON parses and carries the expected fields.
     let inner = sentinel
-        .trim_start_matches("<deepseek:subagent.done>")
-        .trim_end_matches("</deepseek:subagent.done>");
+        .trim_start_matches("<codewhale:subagent.done>")
+        .trim_end_matches("</codewhale:subagent.done>");
     let parsed: serde_json::Value = serde_json::from_str(inner).expect("inner JSON parses");
     assert_eq!(parsed["agent_id"], "agent_xyz");
     assert_eq!(parsed["status"], "completed");
@@ -1174,8 +1174,8 @@ fn subagent_done_sentinel_format_is_well_formed() {
 fn subagent_failed_sentinel_format_is_well_formed() {
     let sentinel = subagent_failed_sentinel("agent_zzz", "boom");
     let inner = sentinel
-        .trim_start_matches("<deepseek:subagent.done>")
-        .trim_end_matches("</deepseek:subagent.done>");
+        .trim_start_matches("<codewhale:subagent.done>")
+        .trim_end_matches("</codewhale:subagent.done>");
     let parsed: serde_json::Value = serde_json::from_str(inner).expect("inner JSON parses");
     assert_eq!(parsed["agent_id"], "agent_zzz");
     assert_eq!(parsed["status"], "failed");
@@ -1651,7 +1651,7 @@ fn persisted_non_empty_allowed_tools_loads_as_narrow() {
 fn stub_runtime() -> SubAgentRuntime {
     use tokio_util::sync::CancellationToken;
 
-    let workspace = std::env::temp_dir().join("deepseek-test-stub");
+    let workspace = std::env::temp_dir().join("codewhale-test-stub");
     let context = ToolContext::new(workspace.clone());
     SubAgentRuntime {
         client: stub_client(),
@@ -2023,7 +2023,7 @@ fn child_runtime_preserves_step_api_timeout() {
 #[test]
 fn subagent_completion_payload_carries_existing_sentinel_format() {
     // The payload format is the same one already documented in
-    // prompts/base.md: human summary on line 1, `<deepseek:subagent.done>`
+    // prompts/base.md: human summary on line 1, `<codewhale:subagent.done>`
     // sentinel on line 2. This test pins the format so future refactors
     // don't silently break the model's parsing contract.
     let mut snap = make_snapshot(SubAgentStatus::Completed);
@@ -2037,14 +2037,14 @@ fn subagent_completion_payload_carries_existing_sentinel_format() {
     let first = lines.next().expect("first line is summary");
     let second = lines.next().expect("second line is sentinel");
     assert!(
-        !first.starts_with("<deepseek:subagent.done>"),
+        !first.starts_with("<codewhale:subagent.done>"),
         "summary should not be the sentinel itself"
     );
     assert!(
-        second.starts_with("<deepseek:subagent.done>"),
+        second.starts_with("<codewhale:subagent.done>"),
         "second line is the sentinel"
     );
-    assert!(second.ends_with("</deepseek:subagent.done>"));
+    assert!(second.ends_with("</codewhale:subagent.done>"));
     assert!(
         second.contains("\"agent_id\":\"agent_test\""),
         "sentinel JSON includes agent_id"
diff --git a/crates/tui/src/tui/notifications.rs b/crates/tui/src/tui/notifications.rs
index fcfe4ba3..670f73f9 100644
--- a/crates/tui/src/tui/notifications.rs
+++ b/crates/tui/src/tui/notifications.rs
@@ -143,7 +143,7 @@ fn build_escape(method: Method, in_tmux: bool, msg: &str) -> Vec<u8> {
         }
         Method::Ghostty => {
             // Ghostty notification: OSC 777 ; notify ; title ; message BEL
-            let seq = format!("\x1b]777;notify;DeepSeek TUI;{msg}\x07");
+            let seq = format!("\x1b]777;notify;codewhale;{msg}\x07");
             wrap_for_multiplexer(&seq, in_tmux).into_bytes()
         }
         // Auto and Off should not reach build_escape.
@@ -332,18 +332,18 @@ pub fn completed_turn_message(
 ) -> String {
     let mut msg = text_summary(current_streaming_text)
         .or_else(|| latest_assistant_text(&app.api_messages))
-        .unwrap_or_else(|| "deepseek: turn complete".to_string());
+        .unwrap_or_else(|| "codewhale: turn complete".to_string());
 
     if include_summary {
         let human = humanize_duration(turn_elapsed);
         let summary = match turn_cost {
             Some(c) => {
                 let cost = crate::pricing::format_cost_estimate(c, app.cost_currency);
-                format!("deepseek: turn complete ({human}, {cost})")
+                format!("codewhale: turn complete ({human}, {cost})")
             }
-            None => format!("deepseek: turn complete ({human})"),
+            None => format!("codewhale: turn complete ({human})"),
         };
-        if msg == "deepseek: turn complete" {
+        if msg == "codewhale: turn complete" {
             msg = summary;
         } else {
             msg.push('\n');
@@ -366,16 +366,16 @@ pub fn subagent_completion_message(
     let result_line = result
         .lines()
         .map(str::trim)
-        .find(|line| !line.is_empty() && !line.starts_with("<deepseek:subagent.done>"));
+        .find(|line| !line.is_empty() && !line.starts_with("<codewhale:subagent.done>"));
     let mut msg = result_line
         .and_then(text_summary)
         .map(|summary| format!("sub-agent {id}: {summary}"))
-        .unwrap_or_else(|| format!("deepseek: sub-agent {id} complete"));
+        .unwrap_or_else(|| format!("codewhale: sub-agent {id} complete"));
 
     if include_summary {
         let human = humanize_duration(elapsed);
         msg.push('\n');
-        msg.push_str(&format!("deepseek: sub-agent complete ({human})"));
+        msg.push_str(&format!("codewhale: sub-agent complete ({human})"));
     }
 
     msg
@@ -471,8 +471,8 @@ mod tests {
 
     #[test]
     fn osc9_body_format() {
-        let out = capture(Method::Osc9, false, "deepseek: done", 0, 1);
-        assert_eq!(out, b"\x1b]9;deepseek: done\x07");
+        let out = capture(Method::Osc9, false, "codewhale: done", 0, 1);
+        assert_eq!(out, b"\x1b]9;codewhale: done\x07");
     }
 
     #[test]
@@ -501,7 +501,7 @@ mod tests {
         let out = capture(Method::Ghostty, false, "done", 0, 1);
         let s = String::from_utf8(out).unwrap();
         assert!(
-            s.contains("777;notify;DeepSeek TUI;done"),
+            s.contains("777;notify;codewhale;done"),
             "should have ghostty seq"
         );
     }
diff --git a/crates/tui/src/tui/onboarding/welcome.rs b/crates/tui/src/tui/onboarding/welcome.rs
index 3726c6a6..46d710fe 100644
--- a/crates/tui/src/tui/onboarding/welcome.rs
+++ b/crates/tui/src/tui/onboarding/welcome.rs
@@ -8,7 +8,7 @@ use crate::palette;
 pub fn lines() -> Vec<Line<'static>> {
     vec![
         Line::from(Span::styled(
-            "DeepSeek TUI",
+            "codewhale",
             Style::default()
                 .fg(palette::DEEPSEEK_BLUE)
                 .add_modifier(Modifier::BOLD),
diff --git a/crates/tui/src/tui/sidebar.rs b/crates/tui/src/tui/sidebar.rs
index 4a102150..1744ac27 100644
--- a/crates/tui/src/tui/sidebar.rs
+++ b/crates/tui/src/tui/sidebar.rs
@@ -2051,7 +2051,7 @@ mod tests {
             .push(HistoryCell::Tool(ToolCell::Generic(GenericToolCell {
                 name: "read_file".to_string(),
                 status: ToolStatus::Success,
-                input_summary: Some("deepseek-tui/CHANGELOG.md".to_string()),
+                input_summary: Some("codewhale-tui/CHANGELOG.md".to_string()),
                 output: Some("done".to_string()),
                 prompts: None,
                 spillover_path: None,
@@ -2328,7 +2328,7 @@ mod tests {
     fn tasks_panel_failed_shell_rows_point_to_activity_details() {
         let mut app = create_test_app();
         app.history.push(HistoryCell::Tool(ToolCell::Exec(ExecCell {
-            command: "cargo test -p deepseek-tui".to_string(),
+            command: "cargo test -p codewhale-tui".to_string(),
             status: ToolStatus::Failed,
             output: Some("test failed".to_string()),
             started_at: None,
diff --git a/crates/tui/src/tui/ui.rs b/crates/tui/src/tui/ui.rs
index 3cf028a4..552a4f4b 100644
--- a/crates/tui/src/tui/ui.rs
+++ b/crates/tui/src/tui/ui.rs
@@ -576,7 +576,7 @@ fn should_show_resume_hint(session_id: Option<&str>) -> bool {
 }
 
 fn resume_hint_text() -> &'static str {
-    "To continue this session, execute deepseek run --continue"
+    "To continue this session, execute codewhale run --continue"
 }
 
 fn terminal_probe_timeout(config: &Config) -> Duration {
diff --git a/crates/tui/src/tui/ui/tests.rs b/crates/tui/src/tui/ui/tests.rs
index 5ec4f788..bc8b7d1d 100644
--- a/crates/tui/src/tui/ui/tests.rs
+++ b/crates/tui/src/tui/ui/tests.rs
@@ -116,7 +116,7 @@ impl Drop for SettingsHomeGuard {
 fn resume_hint_uses_canonical_resume_command() {
     assert_eq!(
         resume_hint_text(),
-        "To continue this session, execute deepseek run --continue"
+        "To continue this session, execute codewhale run --continue"
     );
     assert!(should_show_resume_hint(Some(
         "019dd9d6-4f44-7c83-9863-59674a12b827"
@@ -1952,7 +1952,7 @@ fn init_git_repo() -> TempDir {
     let commit = Command::new("git")
         .args([
             "-c",
-            "user.name=DeepSeek TUI Tests",
+            "user.name=codewhale Tests",
             "-c",
             "user.email=tests@example.com",
             "commit",
@@ -2836,7 +2836,7 @@ fn visible_slash_menu_entries_excludes_removed_commands() {
     assert!(entries.iter().any(|entry| entry.name == "/config"));
     assert!(entries.iter().any(|entry| entry.name == "/links"));
     assert!(!entries.iter().any(|entry| entry.name == "/set"));
-    assert!(!entries.iter().any(|entry| entry.name == "/deepseek"));
+    assert!(!entries.iter().any(|entry| entry.name == "/codewhale"));
 }
 
 #[test]
@@ -5942,7 +5942,7 @@ fn completed_turn_notification_falls_back_to_default_when_empty() {
         Duration::from_secs(5),
         None,
     );
-    assert_eq!(msg, "deepseek: turn complete");
+    assert_eq!(msg, "codewhale: turn complete");
 }
 
 #[test]
@@ -5965,13 +5965,13 @@ fn completed_turn_notification_truncates_long_text() {
 fn subagent_completion_notification_uses_summary_line_not_sentinel() {
     let msg = crate::tui::notifications::subagent_completion_message(
         "agent_live",
-        "Finished the docs audit.\n<deepseek:subagent.done>{}</deepseek:subagent.done>",
+        "Finished the docs audit.\n<codewhale:subagent.done>{}</codewhale:subagent.done>",
         false,
         Duration::from_secs(42),
     );
 
     assert_eq!(msg, "sub-agent agent_live: Finished the docs audit.");
-    assert!(!msg.contains("deepseek:subagent.done"));
+    assert!(!msg.contains("codewhale:subagent.done"));
 }
 
 #[test]
@@ -5983,8 +5983,8 @@ fn subagent_completion_notification_can_include_elapsed_summary() {
         Duration::from_secs(65),
     );
 
-    assert!(msg.contains("deepseek: sub-agent agent_live complete"));
-    assert!(msg.contains("deepseek: sub-agent complete (1m 5s)"));
+    assert!(msg.contains("codewhale: sub-agent agent_live complete"));
+    assert!(msg.contains("codewhale: sub-agent complete (1m 5s)"));
 }
 
 #[test]
diff --git a/crates/tui/src/tui/widgets/header.rs b/crates/tui/src/tui/widgets/header.rs
index afcacd50..3c680412 100644
--- a/crates/tui/src/tui/widgets/header.rs
+++ b/crates/tui/src/tui/widgets/header.rs
@@ -619,7 +619,7 @@ mod tests {
             HeaderData::new(
                 AppMode::Agent,
                 "deepseek-v4-pro",
-                "deepseek-tui",
+                "codewhale-tui",
                 false,
                 palette::DEEPSEEK_INK,
             ),
@@ -627,7 +627,7 @@ mod tests {
         );
 
         assert!(rendered.contains("Agent"));
-        assert!(rendered.contains("deepseek-tui"));
+        assert!(rendered.contains("codewhale-tui"));
         assert!(rendered.contains("deepseek-v4-pro"));
         assert!(!rendered.contains("Plan"));
         assert!(!rendered.contains("Yolo"));
@@ -637,12 +637,12 @@ mod tests {
     fn header_renders_version_chip_when_width_allows() {
         // At a generous width the header must surface the runtime version
         // — users repeatedly ask for it in the live UI (vs only via
-        // `deepseek --version` / `/status`).
+        // `codewhale --version` / `/status`).
         let rendered = render_header(
             HeaderData::new(
                 AppMode::Agent,
                 "deepseek-v4-pro",
-                "deepseek-tui",
+                "codewhale-tui",
                 false,
                 palette::DEEPSEEK_INK,
             ),
@@ -663,7 +663,7 @@ mod tests {
             HeaderData::new(
                 AppMode::Yolo,
                 "deepseek-v4-pro",
-                "deepseek-tui",
+                "codewhale-tui",
                 true,
                 palette::DEEPSEEK_INK,
             )
@@ -775,7 +775,7 @@ mod tests {
             HeaderData::new(
                 AppMode::Agent,
                 "deepseek-ai/deepseek-v4-flash",
-                "deepseek-tui",
+                "codewhale-tui",
                 false,
                 palette::DEEPSEEK_INK,
             )
@@ -794,7 +794,7 @@ mod tests {
             HeaderData::new(
                 AppMode::Agent,
                 "deepseek-v4-pro",
-                "deepseek-tui",
+                "codewhale-tui",
                 false,
                 palette::DEEPSEEK_INK,
             ),
@@ -859,7 +859,7 @@ mod tests {
             HeaderData::new(
                 AppMode::Agent,
                 "deepseek-v4-pro",
-                "deepseek-tui",
+                "codewhale-tui",
                 false,
                 palette::DEEPSEEK_INK,
             )
@@ -890,7 +890,7 @@ mod tests {
             HeaderData::new(
                 AppMode::Agent,
                 "deepseek-v4-pro",
-                "deepseek-tui",
+                "codewhale-tui",
                 false,
                 palette::DEEPSEEK_INK,
             )
diff --git a/crates/tui/src/tui/widgets/mod.rs b/crates/tui/src/tui/widgets/mod.rs
index 2eb2c63a..fdad7dc4 100644
--- a/crates/tui/src/tui/widgets/mod.rs
+++ b/crates/tui/src/tui/widgets/mod.rs
@@ -333,7 +333,7 @@ impl Renderable for ChatWidget {
 
         let area = _area;
 
-        // Repaint the full chat area with the deepseek-ink background each
+        // Repaint the full chat area with the codewhale-ink background each
         // frame. Ratatui's `Paragraph` only writes cells that contain text,
         // so cells the current frame's paragraph doesn't touch would
         // otherwise hold the *previous* frame's contents (the `:24Z`
@@ -1926,7 +1926,7 @@ fn build_empty_state_lines(app: &App, area: Rect) -> Vec<Line<'static>> {
 
     let body = vec![
         Line::from(Span::styled(
-            format!("{inset}>_ DeepSeek TUI (v{})", env!("CARGO_PKG_VERSION")),
+            format!("{inset}>_ codewhale (v{})", env!("CARGO_PKG_VERSION")),
             Style::default().fg(palette::DEEPSEEK_BLUE).bold(),
         )),
         Line::from(""),
@@ -2557,7 +2557,7 @@ mod tests {
     fn slash_completion_hints_exclude_set_and_deepseek_commands() {
         let hints = slash_completion_hints("/", 128, &[], Locale::En, None, ApiProvider::Deepseek);
         assert!(!hints.iter().any(|hint| hint.name == "/set"));
-        assert!(!hints.iter().any(|hint| hint.name == "/deepseek"));
+        assert!(!hints.iter().any(|hint| hint.name == "/codewhale"));
     }
 
     #[test]
@@ -2809,7 +2809,7 @@ mod tests {
         let mut app = create_test_app();
         app.composer_density = ComposerDensity::Comfortable;
         app.session_title =
-            Some("hello could you please take a look at deepseek-tui and all changes".to_string());
+            Some("hello could you please take a look at codewhale-tui and all changes".to_string());
         let slash_menu_entries = Vec::<SlashMenuEntry>::new();
         let mention_menu_entries = Vec::<String>::new();
         let widget = ComposerWidget::new(&app, 5, &slash_menu_entries, &mention_menu_entries);
@@ -2825,7 +2825,7 @@ mod tests {
         let rendered = buffer_text(&buf, area);
 
         assert!(rendered.contains("Composer"));
-        assert!(!rendered.contains("deepseek-tui"));
+        assert!(!rendered.contains("codewhale-tui"));
         assert!(!rendered.contains("hello could you"));
     }
 
@@ -2951,7 +2951,7 @@ mod tests {
     #[test]
     fn empty_state_shows_startup_context() {
         let mut app = create_test_app();
-        app.workspace = PathBuf::from("/tmp/deepseek-test-workspace");
+        app.workspace = PathBuf::from("/tmp/codewhale-test-workspace");
         app.model = "deepseek-v4-pro".to_string();
 
         let lines = build_empty_state_lines(&app, Rect::new(0, 0, 100, 20));
@@ -2966,9 +2966,9 @@ mod tests {
             .collect::<Vec<_>>()
             .join("\n");
 
-        assert!(rendered.contains(&format!(">_ DeepSeek TUI (v{})", env!("CARGO_PKG_VERSION"))));
+        assert!(rendered.contains(&format!(">_ codewhale (v{})", env!("CARGO_PKG_VERSION"))));
         assert!(rendered.contains("model: deepseek-v4-pro  /model to switch"));
-        assert!(rendered.contains("directory: /tmp/deepseek-test-workspace"));
+        assert!(rendered.contains("directory: /tmp/codewhale-test-workspace"));
     }
 
     /// Probe: confirm `cell.lines_with_motion` returns no Line whose total
@@ -3449,7 +3449,7 @@ mod tests {
     /// pays the wrap cost; subsequent calls at different offsets should hit
     /// the per-cell cache and be ~constant time regardless of offset.
     ///
-    /// Run with: `cargo test -p deepseek-tui --release bench_transcript_scroll
+    /// Run with: `cargo test -p codewhale-tui --release bench_transcript_scroll
     /// -- --ignored --nocapture`
     // Perf bench prints timing rows to stdout — runs in `cargo test`,
     // never inside the TUI alt-screen.
diff --git a/crates/tui/tests/protocol_recovery.rs b/crates/tui/tests/protocol_recovery.rs
index b42f174e..7f567a26 100644
--- a/crates/tui/tests/protocol_recovery.rs
+++ b/crates/tui/tests/protocol_recovery.rs
@@ -48,7 +48,7 @@ fn any_engine_source_contains(needle: &str) -> bool {
 
 const EXPECTED_START_MARKERS: &[&str] = &[
     "[TOOL_CALL]",
-    "<deepseek:tool_call",
+    "<codewhale:tool_call",
     "<tool_call",
     "<invoke ",
     "<function_calls>",
@@ -56,7 +56,7 @@ const EXPECTED_START_MARKERS: &[&str] = &[
 
 const EXPECTED_END_MARKERS: &[&str] = &[
     "[/TOOL_CALL]",
-    "</deepseek:tool_call>",
+    "</codewhale:tool_call>",
     "</tool_call>",
     "</invoke>",
     "</function_calls>",
diff --git a/crates/tui/tests/support/qa_harness/harness.rs b/crates/tui/tests/support/qa_harness/harness.rs
index 3ebebde4..3ebda0fa 100644
--- a/crates/tui/tests/support/qa_harness/harness.rs
+++ b/crates/tui/tests/support/qa_harness/harness.rs
@@ -227,7 +227,7 @@ impl Harness {
             return PathBuf::from(path);
         }
         // Legacy fallback for callers still referencing the old bin name.
-        if name == "deepseek-tui"
+        if name == "codewhale-tui"
             && let Some(path) = option_env!("CARGO_BIN_EXE_deepseek-tui")
         {
             return PathBuf::from(path);