diff --git a/Cargo.lock b/Cargo.lock
index 0489068..42771e6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -785,6 +785,12 @@ version = "0.8.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "47e1ffaa40ddd1f3ed91f717a33c8c0ee23fff369e3aa8772b9605cc1d22f4c3"
 
+[[package]]
+name = "md5"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "490cc448043f947bae3cbee9c203358d62dbee0db12107a74be5c30ccfd09771"
+
 [[package]]
 name = "memchr"
 version = "2.8.0"
@@ -1618,6 +1624,7 @@ dependencies = [
  "axum",
  "chrono",
  "clap",
+ "md5",
  "reqwest",
  "roxmltree",
  "serde",
diff --git a/Cargo.toml b/Cargo.toml
index ea627d2..5d8193e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,6 +8,7 @@ anyhow = "1.0"
 axum = "0.8"
 chrono = { version = "0.4", features = ["serde"] }
 clap = { version = "4.5", features = ["derive"] }
+md5 = "0.7"
 reqwest = { version = "0.12", default-features = false, features = ["charset", "http2", "json", "multipart", "rustls-tls"] }
 roxmltree = "0.20"
 serde = { version = "1.0", features = ["derive"] }
diff --git a/PROJECT_MAP.md b/PROJECT_MAP.md
index 67ffa86..0170e35 100644
--- a/PROJECT_MAP.md
+++ b/PROJECT_MAP.md
@@ -19,7 +19,7 @@ script and control smart TVs through a stable, brand-agnostic API.
 
 ## Project Status
 
-**Phase:** Milestone 2 in progress. Core Roku ECP support exists; daemon and CLI wiring are still pending.
+**Phase:** Milestone 2 complete. Roku adapter is live-validated; daemon and CLI wiring are next.
 **Platform v1:** Roku only (via ECP HTTP API)
 **Language:** Rust
 **Crate type:** Binary (single binary distribution target)
@@ -43,6 +43,7 @@ tvctl/
 │   ├── API.md              ← HTTP API specification (detailed)
 │   └── ADAPTER.md          ← Adapter trait spec and implementation guide
 ├── src/
+│   ├── lib.rs              ← Library surface for shared modules and integration tests
 │   ├── main.rs             ← Binary entry point and runtime bootstrap
 │   ├── cli/                ← CLI layer (clap-based scaffold)
 │   │   └── mod.rs
@@ -58,6 +59,8 @@ tvctl/
 │       ├── mod.rs          ← Adapter trait definition and core data shapes
 │       └── roku/           ← Roku ECP adapter implementation
 │           └── mod.rs
+├── tests/
+│   └── roku_live.rs        ← Live Roku integration tests gated by env vars
 └── cache/                  ← Runtime cache (gitignored)
 ```
 
@@ -335,7 +338,6 @@ enabled = true
 - Daemon runtime, socket transport, and persistence logic
 - HTTP route handlers and request validation
 - Real CLI command handling beyond skeleton parsing
-- Integration and hardware validation coverage
 - CI/CD configuration
 - Release/packaging
 
diff --git a/ROADMAP.md b/ROADMAP.md
index 979df65..167d41b 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -7,14 +7,14 @@
 
 ## Current Focus
 
-**Milestone 2 — Roku Adapter**
-Foundation scaffold is complete. Begin platform implementation work.
+**Milestone 3 — Daemon Core**
+Roku adapter work is complete. Begin daemon runtime and persistence wiring.
 
 ---
 
 ## In Progress
 
-- Roku adapter `dev_install()` and `dev_logs()` need developer-web credential handling plus real-device validation
+_Nothing in progress right now._
 
 ---
 
@@ -36,11 +36,11 @@ _Goal: Can communicate with a real Roku TV over ECP._
 - [x] 2026-04-14 — `key()` — send ECP keypress
 - [x] 2026-04-14 — `sequence()` — send multiple keypresses
 - [x] 2026-04-14 — `state()` — query power state and active app
-- [ ] `dev_install()` — zip upload via ECP dev mode
+- [x] 2026-04-14 — `dev_install()` — zip upload via ECP developer web installer with Digest auth
 - [x] 2026-04-14 — `dev_reload()` — reload the sideloaded app via `launch/dev`
-- [ ] `dev_logs()` — fetch dev logs
+- [x] 2026-04-14 — `dev_logs()` — fetch BrightScript debugger output from the live dev socket
 - [x] 2026-04-14 — Key translation table (TvKey → Roku ECP key string)
-- [ ] Manual integration test against real Roku device
+- [x] 2026-04-14 — Automated live validation against `58" Hisense Roku TV` at `10.10.0.136`
 
 ---
 
@@ -156,6 +156,8 @@ out of scope until Milestone 6 is complete and stable.
 - [x] 2026-04-14 — Define the adapter contract and core shared data types
 - [x] 2026-04-14 — Compile the project cleanly with `cargo build`
 - [x] 2026-04-14 — Add Roku ECP discovery, input, app, and state adapter support with unit tests
+- [x] 2026-04-14 — Add env-gated live Roku integration tests and validate against the Hisense TV on the LAN
+- [x] 2026-04-14 — Implement Roku developer-mode install/log support and validate sideloading on the Hisense TV
 
 ---
 
diff --git a/src/adapters/mod.rs b/src/adapters/mod.rs
index a689169..d102e09 100644
--- a/src/adapters/mod.rs
+++ b/src/adapters/mod.rs
@@ -11,6 +11,7 @@ pub mod roku;
 pub type Result<T> = std::result::Result<T, TvError>;
 
 /// A platform adapter capable of controlling one class of TVs.
+#[allow(async_fn_in_trait)]
 pub trait TvAdapter: Send + Sync {
     /// Discover candidate devices for this platform.
     async fn discover(&self) -> Result<Vec<DeviceInfo>>;
diff --git a/src/adapters/roku/mod.rs b/src/adapters/roku/mod.rs
index 2cf244f..ae1c5c9 100644
--- a/src/adapters/roku/mod.rs
+++ b/src/adapters/roku/mod.rs
@@ -1,16 +1,20 @@
 use std::{
     collections::{BTreeMap, BTreeSet},
+    env,
     net::IpAddr,
     time::Duration,
 };
 
 use chrono::Utc;
-use reqwest::{Client, StatusCode, Url};
+use reqwest::{Client, Method, StatusCode, Url, header::WWW_AUTHENTICATE, multipart};
 use roxmltree::Document;
 use tokio::{
+    io::AsyncReadExt,
+    net::TcpStream,
     net::UdpSocket,
     time::{Instant, timeout},
 };
+use uuid::Uuid;
 
 use super::{
     AppInfo, Device, DeviceInfo, DeviceState, PowerState, Result, TvAdapter, TvError, TvKey,
@@ -26,6 +30,9 @@ const ROKU_ECP_DISCOVERY_REQUEST: &str = concat!(
 );
 const DEFAULT_REQUEST_TIMEOUT_SECS: u64 = 5;
 const DEFAULT_DISCOVERY_TIMEOUT_SECS: u64 = 3;
+const DEFAULT_DEV_LOG_WINDOW_SECS: u64 = 3;
+const ROKU_DEV_WEB_PORT: u16 = 80;
+const ROKU_DEV_DEBUG_PORT: u16 = 8085;
 
 /// A Roku ECP adapter backed by SSDP and HTTP requests.
 #[derive(Debug, Clone)]
@@ -33,6 +40,7 @@ pub struct RokuAdapter {
     client: Client,
     request_timeout: Duration,
     discovery_timeout: Duration,
+    dev_log_window: Duration,
 }
 
 impl RokuAdapter {
@@ -42,6 +50,7 @@ impl RokuAdapter {
             client: Client::new(),
             request_timeout: Duration::from_secs(DEFAULT_REQUEST_TIMEOUT_SECS),
             discovery_timeout: Duration::from_secs(DEFAULT_DISCOVERY_TIMEOUT_SECS),
+            dev_log_window: Duration::from_secs(DEFAULT_DEV_LOG_WINDOW_SECS),
         }
     }
 
@@ -51,6 +60,7 @@ impl RokuAdapter {
             client: Client::new(),
             request_timeout,
             discovery_timeout,
+            dev_log_window: Duration::from_secs(DEFAULT_DEV_LOG_WINDOW_SECS),
         }
     }
 
@@ -161,6 +171,175 @@ impl RokuAdapter {
         let xml = self.get_text(url).await?;
         parse_device_info(&xml)
     }
+
+    fn dev_base_url(device: &Device) -> Result<Url> {
+        let host = match device.address {
+            IpAddr::V4(address) => address.to_string(),
+            IpAddr::V6(address) => format!("[{address}]"),
+        };
+        Url::parse(&format!("http://{host}:{ROKU_DEV_WEB_PORT}/"))
+            .map_err(|error| TvError::Transport(format!("invalid Roku developer URL: {error}")))
+    }
+
+    async fn developer_credentials(&self) -> Result<(String, String)> {
+        let username =
+            env::var("TVCTL_ROKU_DEV_USERNAME").unwrap_or_else(|_| "rokudev".to_string());
+        let password = env::var("TVCTL_ROKU_DEV_PASSWORD").map_err(|_| {
+            TvError::Config("missing TVCTL_ROKU_DEV_PASSWORD for Roku developer mode".to_string())
+        })?;
+        Ok((username, password))
+    }
+
+    async fn digest_challenge(&self, url: &Url) -> Result<DigestChallenge> {
+        let response = self
+            .client
+            .get(url.clone())
+            .timeout(self.request_timeout)
+            .send()
+            .await
+            .map_err(|error| TvError::Transport(format!("GET {url} failed: {error}")))?;
+
+        if response.status() != StatusCode::UNAUTHORIZED {
+            return Err(TvError::Transport(format!(
+                "expected digest challenge from {url}, got status {}",
+                response.status()
+            )));
+        }
+
+        let header = response
+            .headers()
+            .get(WWW_AUTHENTICATE)
+            .and_then(|value| value.to_str().ok())
+            .ok_or_else(|| TvError::Transport(format!("missing digest challenge from {url}")))?;
+
+        DigestChallenge::parse(header)
+    }
+
+    fn digest_authorization(
+        challenge: &DigestChallenge,
+        username: &str,
+        password: &str,
+        method: &Method,
+        uri: &str,
+    ) -> String {
+        let cnonce = format!("{:x}", md5::compute(Uuid::new_v4().as_bytes()));
+        let nc = "00000001";
+        let ha1 = format!(
+            "{:x}",
+            md5::compute(format!("{username}:{}:{password}", challenge.realm))
+        );
+        let ha2 = format!("{:x}", md5::compute(format!("{}:{uri}", method.as_str())));
+        let response = format!(
+            "{:x}",
+            md5::compute(format!(
+                "{ha1}:{}:{nc}:{cnonce}:{}:{ha2}",
+                challenge.nonce, challenge.qop
+            ))
+        );
+
+        let mut parts = vec![
+            format!("username=\"{username}\""),
+            format!("realm=\"{}\"", challenge.realm),
+            format!("nonce=\"{}\"", challenge.nonce),
+            format!("uri=\"{uri}\""),
+            format!("response=\"{response}\""),
+            format!("qop={}", challenge.qop),
+            format!("nc={nc}"),
+            format!("cnonce=\"{cnonce}\""),
+        ];
+        if let Some(opaque) = &challenge.opaque {
+            parts.push(format!("opaque=\"{opaque}\""));
+        }
+        if let Some(algorithm) = &challenge.algorithm {
+            parts.push(format!("algorithm={algorithm}"));
+        }
+
+        format!("Digest {}", parts.join(", "))
+    }
+
+    async fn developer_post_multipart(
+        &self,
+        device: &Device,
+        path: &str,
+        form: multipart::Form,
+    ) -> Result<String> {
+        let (username, password) = self.developer_credentials().await?;
+        let base_url = Self::dev_base_url(device)?;
+        let url = Self::join_url(&base_url, path)?;
+        let challenge = self.digest_challenge(&url).await?;
+        let uri = format!("/{path}");
+        let authorization =
+            Self::digest_authorization(&challenge, &username, &password, &Method::POST, &uri);
+
+        let response = self
+            .client
+            .post(url.clone())
+            .timeout(self.request_timeout)
+            .header("Authorization", authorization)
+            .multipart(form)
+            .send()
+            .await
+            .map_err(|error| TvError::Transport(format!("POST {url} failed: {error}")))?;
+
+        let status = response.status();
+        let body = response
+            .text()
+            .await
+            .map_err(|error| TvError::Transport(format!("reading {url} failed: {error}")))?;
+
+        if status == StatusCode::UNAUTHORIZED {
+            return Err(TvError::Transport(
+                "invalid Roku developer credentials".to_string(),
+            ));
+        }
+
+        Ok(body)
+    }
+
+    async fn debugger_lines(&self, device: &Device) -> Result<Vec<String>> {
+        let address = (device.address, ROKU_DEV_DEBUG_PORT);
+        let mut stream = timeout(self.request_timeout, TcpStream::connect(address))
+            .await
+            .map_err(|_| {
+                TvError::Transport(format!(
+                    "connecting to Roku debugger at {} timed out",
+                    device.address
+                ))
+            })?
+            .map_err(|error| {
+                TvError::Transport(format!("connecting to Roku debugger failed: {error}"))
+            })?;
+
+        let deadline = Instant::now() + self.dev_log_window;
+        let mut buffer = vec![0_u8; 4096];
+        let mut output = Vec::new();
+
+        loop {
+            let now = Instant::now();
+            if now >= deadline {
+                break;
+            }
+
+            let remaining = deadline - now;
+            match timeout(remaining, stream.read(&mut buffer)).await {
+                Ok(Ok(0)) => break,
+                Ok(Ok(size)) => output.extend_from_slice(&buffer[..size]),
+                Ok(Err(error)) => {
+                    return Err(TvError::Transport(format!(
+                        "reading Roku debugger output failed: {error}"
+                    )));
+                }
+                Err(_) => break,
+            }
+        }
+
+        Ok(String::from_utf8_lossy(&output)
+            .lines()
+            .map(str::trim_end)
+            .filter(|line| !line.is_empty())
+            .map(ToString::to_string)
+            .collect())
+    }
 }
 
 impl Default for RokuAdapter {
@@ -285,6 +464,38 @@ impl TvAdapter for RokuAdapter {
     async fn dev_reload(&self, device: &Device) -> Result<()> {
         self.device_post(device, "launch/dev").await
     }
+
+    async fn dev_install(&self, device: &Device, zip: &[u8]) -> Result<()> {
+        let part = multipart::Part::bytes(zip.to_vec())
+            .file_name("tvctl-dev.zip")
+            .mime_str("application/zip")
+            .map_err(|error| {
+                TvError::Transport(format!("invalid Roku package MIME type: {error}"))
+            })?;
+        let form = multipart::Form::new()
+            .text("mysubmit", "Install")
+            .part("archive", part);
+
+        let body = self
+            .developer_post_multipart(device, "plugin_install", form)
+            .await?;
+
+        if body.contains("Install Success.") {
+            return Ok(());
+        }
+
+        if let Some(message) = extract_first_message(&body, "Install Failure:") {
+            return Err(TvError::Transport(message));
+        }
+
+        Err(TvError::Transport(
+            "Roku developer install did not report success".to_string(),
+        ))
+    }
+
+    async fn dev_logs(&self, device: &Device) -> Result<Vec<String>> {
+        self.debugger_lines(device).await
+    }
 }
 
 #[derive(Debug, Clone, PartialEq, Eq)]
@@ -398,6 +609,18 @@ fn parse_ssdp_location(response: &str) -> Option<String> {
     })
 }
 
+fn extract_first_message(body: &str, prefix: &str) -> Option<String> {
+    body.lines()
+        .map(str::trim)
+        .find(|line| line.contains(prefix))
+        .map(|line| {
+            line.replace("<font color=\"red\">", "")
+                .replace("</font>", "")
+                .trim()
+                .to_string()
+        })
+}
+
 fn map_power_state(value: Option<&str>) -> PowerState {
     let Some(value) = value else {
         return PowerState::Unknown;
@@ -459,6 +682,46 @@ fn roku_key_paths(key: &TvKey) -> Result<Vec<String>> {
     Err(TvError::InvalidKey(path.to_string()))
 }
 
+#[derive(Debug, Clone, PartialEq, Eq)]
+struct DigestChallenge {
+    realm: String,
+    nonce: String,
+    qop: String,
+    opaque: Option<String>,
+    algorithm: Option<String>,
+}
+
+impl DigestChallenge {
+    fn parse(header: &str) -> Result<Self> {
+        let challenge = header
+            .strip_prefix("Digest ")
+            .ok_or_else(|| TvError::Transport(format!("unsupported auth challenge: {header}")))?;
+        let mut values = BTreeMap::new();
+        for part in challenge.split(',') {
+            let (key, value) = part
+                .trim()
+                .split_once('=')
+                .ok_or_else(|| TvError::Transport(format!("invalid digest challenge: {header}")))?;
+            values.insert(
+                key.trim().to_string(),
+                value.trim().trim_matches('"').to_string(),
+            );
+        }
+
+        Ok(Self {
+            realm: values
+                .remove("realm")
+                .ok_or_else(|| TvError::Transport("digest challenge missing realm".to_string()))?,
+            nonce: values
+                .remove("nonce")
+                .ok_or_else(|| TvError::Transport("digest challenge missing nonce".to_string()))?,
+            qop: values.remove("qop").unwrap_or_else(|| "auth".to_string()),
+            opaque: values.remove("opaque"),
+            algorithm: values.remove("algorithm"),
+        })
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -532,4 +795,14 @@ mod tests {
         let error = roku_key_paths(&TvKey::PowerOn).expect_err("PowerOn should not map");
         assert!(matches!(error, TvError::InvalidKey(key) if key == "power-on"));
     }
+
+    #[test]
+    fn parses_digest_challenge() {
+        let challenge =
+            DigestChallenge::parse("Digest qop=\"auth\", realm=\"rokudev\", nonce=\"1776173348\"")
+                .expect("challenge should parse");
+        assert_eq!(challenge.realm, "rokudev");
+        assert_eq!(challenge.nonce, "1776173348");
+        assert_eq!(challenge.qop, "auth");
+    }
 }
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..71c30e5
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,6 @@
+#![allow(dead_code)]
+
+pub mod adapters;
+pub mod api;
+pub mod cli;
+pub mod daemon;
diff --git a/src/main.rs b/src/main.rs
index 0ebd0c7..d93769b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,10 +1,3 @@
-#![allow(dead_code)]
-
-mod adapters;
-mod api;
-mod cli;
-mod daemon;
-
 /// Launch the tvctl binary entry point.
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
@@ -17,5 +10,5 @@ async fn main() -> anyhow::Result<()> {
         .compact()
         .init();
 
-    cli::run().await
+    tvctl::cli::run().await
 }
diff --git a/tests/roku_live.rs b/tests/roku_live.rs
new file mode 100644
index 0000000..38b3276
--- /dev/null
+++ b/tests/roku_live.rs
@@ -0,0 +1,228 @@
+use std::{env, fs, net::IpAddr, process::Command, sync::OnceLock, time::Duration};
+
+use chrono::Utc;
+use tokio::time::sleep;
+use tvctl::adapters::{Device, DeviceState, PowerState, TvAdapter, roku::RokuAdapter};
+use uuid::Uuid;
+
+static LIVE_ROKU_LOCK: OnceLock<tokio::sync::Mutex<()>> = OnceLock::new();
+
+fn live_target_ip() -> Option<IpAddr> {
+    env::var("TVCTL_LIVE_ROKU_IP")
+        .ok()
+        .and_then(|value| value.parse::<IpAddr>().ok())
+}
+
+fn live_expected_name() -> Option<String> {
+    env::var("TVCTL_LIVE_ROKU_NAME").ok()
+}
+
+fn live_dev_password() -> Option<String> {
+    env::var("TVCTL_ROKU_DEV_PASSWORD").ok()
+}
+
+fn live_device(ip: IpAddr) -> Device {
+    Device {
+        id: Uuid::new_v4(),
+        name: live_expected_name().unwrap_or_else(|| "Live Roku".to_string()),
+        original_name: live_expected_name().unwrap_or_else(|| "Live Roku".to_string()),
+        platform: "roku".to_string(),
+        address: ip,
+        port: 8060,
+        is_default: false,
+        discovered_at: Utc::now(),
+        last_seen: Utc::now(),
+    }
+}
+
+async fn live_guard() -> tokio::sync::MutexGuard<'static, ()> {
+    LIVE_ROKU_LOCK
+        .get_or_init(|| tokio::sync::Mutex::new(()))
+        .lock()
+        .await
+}
+
+async fn wait_for_active_app(
+    adapter: &RokuAdapter,
+    device: &Device,
+    expected_platform_id: &str,
+    attempts: usize,
+) -> DeviceState {
+    let mut last_state = adapter.state(device).await.expect("state should succeed");
+    for _ in 0..attempts {
+        if last_state
+            .active_app
+            .as_ref()
+            .map(|app| app.platform_id.as_str())
+            == Some(expected_platform_id)
+        {
+            return last_state;
+        }
+        sleep(Duration::from_millis(750)).await;
+        last_state = adapter.state(device).await.expect("state should succeed");
+    }
+    last_state
+}
+
+#[tokio::test]
+async fn live_discover_finds_expected_roku() {
+    let Some(ip) = live_target_ip() else {
+        return;
+    };
+    let _guard = live_guard().await;
+
+    let adapter = RokuAdapter::new();
+    let devices = adapter.discover().await.expect("discovery should succeed");
+    let device = devices
+        .iter()
+        .find(|device| device.address == ip)
+        .expect("live Roku should be discovered");
+
+    if let Some(expected_name) = live_expected_name() {
+        assert_eq!(device.name, expected_name);
+    }
+}
+
+#[tokio::test]
+async fn live_state_and_apps_are_queryable() {
+    let Some(ip) = live_target_ip() else {
+        return;
+    };
+    let _guard = live_guard().await;
+
+    let adapter = RokuAdapter::new();
+    let device = live_device(ip);
+
+    let state = adapter.state(&device).await.expect("state should succeed");
+    assert_eq!(state.device_id, device.id);
+    assert_eq!(state.power, PowerState::On);
+
+    let active_app = state.active_app.expect("active app should exist");
+    assert!(!active_app.name.is_empty());
+
+    let apps = adapter
+        .list_apps(&device)
+        .await
+        .expect("app listing should succeed");
+    assert!(!apps.is_empty());
+    assert!(apps.iter().any(|app| app.name == "Netflix"));
+    assert!(apps.iter().any(|app| app.name == "YouTube"));
+}
+
+#[tokio::test]
+async fn live_key_sequence_and_launch_work() {
+    let Some(ip) = live_target_ip() else {
+        return;
+    };
+    let _guard = live_guard().await;
+
+    let adapter = RokuAdapter::new();
+    let device = live_device(ip);
+
+    adapter
+        .key(&device, tvctl::adapters::TvKey::Home)
+        .await
+        .expect("home key should succeed");
+
+    let home_state = wait_for_active_app(&adapter, &device, "562859", 12).await;
+    let home_app = home_state.active_app.expect("home app should exist");
+    assert_eq!(home_app.name, "Home");
+
+    adapter
+        .launch(&device, "837")
+        .await
+        .expect("YouTube launch should succeed");
+
+    let launched_state = wait_for_active_app(&adapter, &device, "837", 12).await;
+    let launched_app = launched_state
+        .active_app
+        .expect("launched app should exist");
+    assert_eq!(launched_app.platform_id, "837");
+
+    adapter
+        .stop_app(&device)
+        .await
+        .expect("stop_app should return to home");
+
+    let restored_state = wait_for_active_app(&adapter, &device, "562859", 12).await;
+    let restored_app = restored_state
+        .active_app
+        .expect("restored app should exist");
+    assert_eq!(restored_app.name, "Home");
+}
+
+#[tokio::test]
+async fn live_dev_install_reload_and_logs_work() {
+    let Some(ip) = live_target_ip() else {
+        return;
+    };
+    let Some(_password) = live_dev_password() else {
+        return;
+    };
+    let _guard = live_guard().await;
+
+    let adapter = RokuAdapter::new();
+    let device = live_device(ip);
+    let package = build_dev_test_zip();
+
+    adapter
+        .dev_install(&device, &package)
+        .await
+        .expect("dev install should succeed");
+
+    adapter
+        .dev_reload(&device)
+        .await
+        .expect("dev reload should succeed");
+
+    let state = wait_for_active_app(&adapter, &device, "dev", 12).await;
+    let app = state.active_app.expect("dev app should be active");
+    assert_eq!(app.platform_id, "dev");
+
+    let logs = adapter
+        .dev_logs(&device)
+        .await
+        .expect("dev logs should be readable");
+    let joined = logs.join("\n");
+    assert!(joined.contains("tvctl dev test starting"));
+    assert!(joined.contains("tvctl heartbeat"));
+
+    adapter
+        .stop_app(&device)
+        .await
+        .expect("stop_app should return to home after dev test");
+}
+
+fn build_dev_test_zip() -> Vec<u8> {
+    let root = env::temp_dir().join(format!("tvctl-roku-live-{}", Uuid::new_v4()));
+    let source_dir = root.join("source");
+    fs::create_dir_all(&source_dir).expect("source dir should exist");
+
+    fs::write(
+        root.join("manifest"),
+        "title=tvctl dev test\nsubtitle=tvctl dev test\nmajor_version=1\nminor_version=0\nbuild_version=3\n",
+    )
+    .expect("manifest should write");
+    fs::write(
+        source_dir.join("main.brs"),
+        "sub Main()\n  print \"tvctl dev test starting\"\n  while true\n    print \"tvctl heartbeat\"\n    sleep(1000)\n  end while\nend sub\n",
+    )
+    .expect("main source should write");
+
+    let zip_path = root.join("tvctl-dev-test.zip");
+    let status = Command::new("zip")
+        .current_dir(&root)
+        .args([
+            "-qr",
+            zip_path.to_str().expect("zip path should be utf-8"),
+            "manifest",
+            "source",
+        ])
+        .status()
+        .expect("zip command should run");
+    assert!(status.success(), "zip command should succeed");
+
+    let bytes = fs::read(&zip_path).expect("zip output should be readable");
+    let _ = fs::remove_dir_all(&root);
+    bytes
+}