Finalize AUR deskify-bin PKGBUILD checksums

CHANGELOG.md

@@ -7,6 +7,32 @@ and this project follows early MVP/alpha versioning with tags like `v0.1.0-alpha
 
 ## [Unreleased]
 
+## [v0.1.0-alpha.6] - 2026-02-23
+
+### Added
+- `chromium` compatibility backend via `--backend chromium` using an installed Chromium-based browser in app mode (no local Tauri build for generated apps)
+- `build` / `update` flags for Chromium backend selection and runtime control:
+  - `--backend <tauri|chromium>`
+  - `--browser-bin <PATH>`
+  - `--profile-scope <isolated|shared>`
+- Chromium app install flow with XDG `.desktop` launchers and per-app metadata (`X-Deskify-Backend=chromium`)
+- Optional isolated Chromium profiles under `~/.local/share/deskify/profiles/<id>`
+- `doctor` now reports whether a Chromium-based browser is available in `PATH`
+
+### Changed
+- `update <id>` now keeps the internal app ID stable even when the display name changes
+- `list` now derives the internal ID from the `.desktop` filename (works for both Tauri and Chromium backends)
+- `remove` now also cleans up Chromium profile directories (when present)
+- `update` keeps Chromium isolated profiles by default to preserve sessions/cookies during reinstall
+
+### Fixed
+- Tauri wrapper generation now consistently uses the existing internal ID for generated app identifiers (prevents accidental ID drift during updates)
+- `.desktop` command generation for Chromium backend now escapes arguments (URLs / user agents with spaces or special characters)
+
+### Documentation
+- README now documents backend modes (`tauri` vs `chromium`) and recommends `--backend chromium` for sites that fail in the system WebView backend
+- Added Chromium backend usage examples (`--browser-bin`, `--profile-scope`) and updated compatibility notes
+
 ### Added
 - `build --no-decorations` option to create frameless windows (`decorations: false`) for kiosk/dashboard-style setups
 - README screenshots for KDE/Arch showing launcher integration, running app window, and `deskify list` workflow

Cargo.lock

@@ -351,6 +351,7 @@ dependencies = [
  "directories",
  "image",
  "regex",
+ "serde",
  "serde_json",
  "tempfile",
  "ureq",
@@ -1334,6 +1335,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9a8e94ea7f378bd32cbbd37198a4a91436180c5bb472411e48b5ec2e2124ae9e"
 dependencies = [
  "serde_core",
+ "serde_derive",
 ]
 
 [[package]]

Cargo.toml

@@ -9,6 +9,7 @@ clap = { version = "4.5.60", features = ["derive"] }
 directories = "6.0.0"
 image = "0.25.9"
 regex = "1.12.3"
+serde = { version = "1.0.218", features = ["derive"] }
 serde_json = "1.0.149"
 tempfile = "3.25.0"
 ureq = "2.9"

README.md

@@ -10,6 +10,8 @@
   <img src="https://img.shields.io/badge/Language-Rust-orange?style=flat-square" alt="Written in Rust" />
   <img src="https://img.shields.io/badge/Powered_by-Tauri_v2-grey?style=flat-square" alt="Tauri v2" />
   <img src="https://img.shields.io/badge/Status-Alpha-yellow?style=flat-square" alt="Alpha status" />
+  <img src="https://img.shields.io/github/v/release/spalencsar/deskify?label=Latest%20Release&style=flat-square" alt="Latest release" />
+  <img src="https://img.shields.io/badge/License-MIT-green?style=flat-square" alt="MIT license" />
 </p>
 
 <p align="center">
@@ -25,6 +27,34 @@
 
 ---
 
+## Quick Start
+
+Two tracks, depending on what you want:
+
+### Option A: Chromium mode (fastest, best compatibility)
+
+Requirements: any Chromium-based browser installed (`chromium`, `google-chrome`, `brave`, etc.)
+
+```bash
+mkdir -p ~/.local/bin
+curl -L -o ~/.local/bin/deskify \
+  https://github.com/spalencsar/deskify/releases/latest/download/deskify-linux-x86_64
+chmod +x ~/.local/bin/deskify
+
+# If `deskify` is not found, ensure ~/.local/bin is in PATH (common on Ubuntu/Debian):
+command -v deskify >/dev/null || { echo 'export PATH="$HOME/.local/bin:$PATH"' >> ~/.bashrc && source ~/.bashrc; }
+
+deskify build --url "https://chat.com" --name "Chat" --backend chromium
+```
+
+### Option B: Native Tauri mode (system WebView, no Chromium dependency)
+
+Follow the full install section below (Tauri/WebKitGTK prerequisites), then:
+
+```bash
+deskify build --url "https://chat.com" --name "Chat"
+```
+
 ## Why Deskify Exists
 
 Web apps are now core tools, but Linux desktops still treat them like second-class citizens.
@@ -91,8 +121,10 @@ flowchart TD
 
 - Requires Tauri/Linux system dependencies to be installed locally before `deskify build`
 - Generated app build success can vary by distro/system setup (WebKitGTK/Tauri prerequisites)
+- Some modern sites fail or degrade in the system WebView backend (`tauri`) due to engine/runtime differences
 - No official cross-platform support (Windows/macOS) yet
 - GitHub Releases / binary automation for `deskify` itself may lag behind source updates during early MVP
+- DRM/protected-media services may not work reliably in the system WebView backend even if they work in a full browser (depends on WebView/DRM support)
 
 ## Where Deskify Is Going
 
@@ -115,7 +147,7 @@ flowchart TD
     A --> C[App config files]
     A --> D[Icons + .desktop entries]
     C --> E[apps/chatgpt.json]
-    C --> F[apps/netflix.json]
+    C --> F[apps/home-assistant.json]
     B --> G[Load app config at launch]
     G --> H[Open site in system webview]
     D --> I[Linux app menu integration]
@@ -143,6 +175,25 @@ The table above covers the technical tradeoffs in more detail. In practice, `des
 
 ## 🚀 Installation
 
+### Option A: Install a prebuilt binary (recommended)
+
+Deskify provides Linux release binaries. Download the latest release and install it into `~/.local/bin`:
+
+```bash
+mkdir -p ~/.local/bin
+curl -L -o ~/.local/bin/deskify \
+  https://github.com/spalencsar/deskify/releases/latest/download/deskify-linux-x86_64
+chmod +x ~/.local/bin/deskify
+deskify --help
+```
+
+Notes:
+
+- The `tauri` backend still requires Tauri/WebKitGTK system dependencies to build wrappers locally.
+- The `chromium` backend does not require Tauri prerequisites (but it requires an installed Chromium-based browser).
+
+### Option B: Build from source (Tauri mode)
+
 ### 1. System Dependencies
 Because `deskify` compiles Tauri applications natively on your machine, you need the standard Tauri prerequisites installed before using it.
 
@@ -210,11 +261,25 @@ Once the build finishes, `ChatGPT` will instantly appear in your system Applicat
 
 `deskify` derives a safe internal ID from the app name (for example, `ChatGPT` becomes `chatgpt`).
 
+### Backend Modes (`--backend`)
+
+Deskify supports two backend modes:
+
+- `tauri` (default): Uses the system WebView (`webkit2gtk` on Linux). Produces small wrappers and strong Linux desktop integration, but some sites may fail due to engine compatibility.
+- `chromium`: Uses an already installed Chromium-based browser (`chromium`, `google-chrome`, `brave`, etc.) in app mode. Better site compatibility and no local Tauri build, but depends on a browser installed on the system.
+
+If a site does not work in the default `tauri` backend, try `--backend chromium`.
+
+Quick decision rule:
+
+- Start with the default `tauri` backend for small wrappers and native Linux integration.
+- If the site fails to load, behaves incorrectly, or needs a newer browser engine, rebuild/update with `--backend chromium`.
+
 #### Advanced Build Options
 ```bash
 deskify build \
-  --url "https://netflix.com" \
+  --url "https://example.com/dashboard" \
-  --name "Netflix" \
+  --name "Dashboard" \
   --fullscreen \
   --user-agent "Mozilla/5.0 (Windows NT 10.0; Win64; x64) Chrome/120.0.0.0 Safari/537.36" \
   --dark-mode \
@@ -239,6 +304,32 @@ Preview the generated Tauri config without building/installing:
 deskify build --url "https://chat.com" --name "Chat" --print-config
 ```
 
+Chromium compatibility mode (no local Tauri build):
+
+```bash
+deskify build --url "https://mail.proton.me" --name "Proton Mail" --backend chromium
+```
+
+Chromium with shared browser profile (uses existing browser profile/session model):
+
+```bash
+deskify build \
+  --url "https://app.slack.com" \
+  --name "Slack" \
+  --backend chromium \
+  --profile-scope shared
+```
+
+Chromium with explicit browser binary:
+
+```bash
+deskify build \
+  --url "https://github.com" \
+  --name "GitHub" \
+  --backend chromium \
+  --browser-bin /usr/bin/brave-browser
+```
+
 Preview planned actions only (dry run):
 
 ```bash
@@ -251,20 +342,34 @@ deskify build --url "https://chat.com" --name "Chat" --dry-run
 * `--user-agent <UA>`: Useful to bypass webview restrictions on certain platforms.
 * `--dark-mode`: Forces the Tauri webview into a dark theme.
 * `--width <PX>` / `--height <PX>`: Sets the startup resolution.
+* `--backend <tauri|chromium>`: Choose system WebView (`tauri`) or Chromium app mode (`chromium`).
+* `--browser-bin <PATH>`: Use a specific Chromium-based browser binary (Chromium backend only).
+* `--profile-scope <isolated|shared>`: Chromium backend profile behavior (`isolated` creates a per-app profile under `~/.local/share/deskify/profiles/`).
 * `--print-config`: Prints the generated `tauri.conf.json` and exits.
 * `--dry-run`: Shows planned actions without building/installing.
 
+Note for Chromium backend:
+
+- `--no-decorations` is best-effort and may be ignored by the browser/window manager.
+- `--width` and `--height` are applied together (`--window-size`) only when both are provided.
+
 ### Managing Apps (`list` & `remove`)
 You can view all applications generated by `deskify`:
 ```bash
 deskify list
 ```
+
+Verbose list (includes URL/backend when metadata is available):
+
+```bash
+deskify list --verbose
+```
 *Output:*
 
 ```text
 Installed Deskify Apps:
-- ChatGPT (Internal ID: chatgpt)
+- ChatGPT (Internal ID: chatgpt, Backend: tauri)
-- Netflix (Internal ID: netflix)
+- Proton Mail (Internal ID: proton-mail, Backend: chromium)
 ```
 
 To entirely uninstall an app (including the binary, desktop entry, and icons):
@@ -282,7 +387,9 @@ Rebuild and reinstall an existing app ID without manually running `remove` + `bu
 deskify update chat --url "https://chat.com" --name "Chat" --no-decorations
 ```
 
-Alpha note: `update` currently requires `--url` because Deskify does not persist app URLs/config metadata yet.
+Deskify persists app metadata under `~/.local/share/deskify/apps/<id>.json`. With persisted metadata, `update` can be used without `--url`.
+If an older app has no metadata yet, provide `--url` once (or rebuild once) to migrate it.
+`update <id>` keeps the existing internal ID stable even if you change the display name.
 
 You can also preview an update:
 
@@ -291,6 +398,12 @@ deskify update chat --url "https://chat.com" --dry-run
 deskify update chat --url "https://chat.com" --print-config
 ```
 
+Switch an existing app to Chromium compatibility mode while keeping the same internal ID:
+
+```bash
+deskify update chat --url "https://chat.com" --name "Chat" --backend chromium
+```
+
 ### Diagnostics (`doctor`)
 
 Check local prerequisites and common environment issues (Rust/Cargo, `cargo tauri`, `pkg-config`, directories):
@@ -299,6 +412,8 @@ Check local prerequisites and common environment issues (Rust/Cargo, `cargo taur
 deskify doctor
 ```
 
+`doctor` also checks whether a Chromium-based browser is available in `PATH` for `--backend chromium`.
+
 ---
 
 ## 🧪 Manual Smoke Test Checklist (Before a Public Release)
@@ -323,10 +438,9 @@ Expected: clean validation error and no unintended file deletion.
 ## 🏷️ Versioning & GitHub Releases (MVP)
 
 - Recommended tag format during MVP: `v0.1.0-alpha.N`
-- Start with **source-first** releases (repository + tags)
+- GitHub Releases publish a Linux `deskify` CLI binary on tags (`v*`)
-- Add automated binary releases later via GitHub Actions
 
-For the current public alpha, use `v0.1.0-alpha.2` (and continue with `v0.1.0-alpha.N` for follow-up releases).
+For the latest alpha, see GitHub Releases (and continue with `v0.1.0-alpha.N` for follow-up releases).
 
 ---
 

packaging/PKGBUILD

@@ -0,0 +1,22 @@
+pkgname=deskify-bin
+pkgver=0.1.0_alpha.6
+pkgrel=1
+pkgdesc="Turn websites into Linux desktop apps (prebuilt binary package)"
+arch=('x86_64')
+url="https://github.com/spalencsar/deskify"
+license=('MIT')
+depends=('glibc')
+provides=('deskify')
+conflicts=('deskify')
+
+_tag="v0.1.0-alpha.6"
+source=("deskify::https://github.com/spalencsar/deskify/releases/download/${_tag}/deskify-linux-x86_64"
+        "LICENSE::https://raw.githubusercontent.com/spalencsar/deskify/${_tag}/LICENSE")
+
+sha256sums=('6962571579b32fcf3119d0d749770b584ce57ef1efe4feea8813314d2ed61d7a'
+            'd4e53458cd2dd461f234186497b6d9b21566c477737a4d31fa6f018ef610486f')
+
+package() {
+  install -Dm755 "${srcdir}/deskify" "${pkgdir}/usr/bin/deskify"
+  install -Dm644 "${srcdir}/LICENSE" "${pkgdir}/usr/share/licenses/${pkgname}/LICENSE"
+}

packaging/README.md

@@ -0,0 +1,26 @@
+## AUR package template (manual)
+
+This folder contains a minimal `PKGBUILD` template for a future AUR package:
+
+- `deskify-bin` (prebuilt GitHub Releases binary)
+
+Notes:
+
+- Update `_tag` and `pkgver` when you publish a new release tag.
+- Update `sha256sums` to match the release asset + LICENSE for that tag.
+
+Local build test:
+
+```bash
+cd packaging
+makepkg -sf
+```
+
+To compute sha256 sums for a tag:
+
+```bash
+TAG="v0.1.0-alpha.6"
+curl -fL -o /tmp/deskify-linux-x86_64 "https://github.com/spalencsar/deskify/releases/download/${TAG}/deskify-linux-x86_64"
+curl -fL -o /tmp/LICENSE "https://raw.githubusercontent.com/spalencsar/deskify/${TAG}/LICENSE"
+sha256sum /tmp/deskify-linux-x86_64 /tmp/LICENSE
+```

src/main.rs

@@ -4,6 +4,7 @@ use directories::BaseDirs;
 use image::{DynamicImage, ImageFormat};
 use regex::Regex;
 use serde_json::{Map, Value, json};
+use std::env;
 use std::fs;
 use std::io::Read;
 use std::path::{Path, PathBuf};
@@ -11,10 +12,29 @@ use std::process::Command;
 use tempfile::tempdir;
 use url::Url;
 
+#[derive(
+    clap::ValueEnum, serde::Serialize, serde::Deserialize, Debug, Clone, Copy, PartialEq, Eq,
+)]
+#[serde(rename_all = "lowercase")]
+enum Backend {
+    Tauri,
+    Chromium,
+}
+
+#[derive(
+    clap::ValueEnum, serde::Serialize, serde::Deserialize, Debug, Clone, Copy, PartialEq, Eq,
+)]
+#[serde(rename_all = "lowercase")]
+enum ProfileScope {
+    Isolated,
+    Shared,
+}
+
 #[derive(Debug, Clone)]
 struct BuildArgs {
     url: String,
     name: String,
+    internal_id: String,
     icon: Option<String>,
     fullscreen: bool,
     no_decorations: bool,
@@ -22,6 +42,9 @@ struct BuildArgs {
     width: Option<f64>,
     height: Option<f64>,
     dark_mode: bool,
+    backend: Backend,
+    browser_bin: Option<String>,
+    profile_scope: ProfileScope,
 }
 
 /// Deskify - Turn any URL into a native Linux desktop application using Tauri.
@@ -72,6 +95,18 @@ enum Commands {
         #[arg(short, long)]
         dark_mode: bool,
 
+        /// Backend to use for the generated app
+        #[arg(long, value_enum, default_value_t = Backend::Tauri)]
+        backend: Backend,
+
+        /// Path to a Chromium-based browser binary (only for `--backend chromium`)
+        #[arg(long)]
+        browser_bin: Option<String>,
+
+        /// Profile isolation for Chromium backend (only for `--backend chromium`)
+        #[arg(long, value_enum, default_value_t = ProfileScope::Isolated)]
+        profile_scope: ProfileScope,
+
         /// Print the generated Tauri config JSON and exit
         #[arg(long)]
         print_config: bool,
@@ -81,7 +116,11 @@ enum Commands {
         dry_run: bool,
     },
     /// List all installed apps created by deskify
-    List,
+    List {
+        /// Show additional metadata (URL, backend) when available
+        #[arg(long)]
+        verbose: bool,
+    },
     /// Check local prerequisites and environment diagnostics
     Doctor,
     /// Remove a specific app by its internal ID
@@ -89,14 +128,14 @@ enum Commands {
         /// The safe name/ID of the app (e.g., "youtube")
         id: String,
     },
-    /// Rebuild and reinstall an existing app ID with new settings (alpha: URL is required)
+    /// Rebuild and reinstall an existing app ID with new settings (URL is optional when persisted)
     Update {
         /// The existing internal ID (e.g., "chatgpt")
         id: String,
 
-        /// The URL to wrap (required in current alpha because URLs are not persisted yet)
+        /// The URL to wrap (optional if Deskify has persisted app metadata for this ID)
         #[arg(short, long)]
-        url: String,
+        url: Option<String>,
 
         /// Optional new display name (defaults to current desktop entry name or the ID)
         #[arg(short, long)]
@@ -107,12 +146,12 @@ enum Commands {
         icon: Option<String>,
 
         /// Launch the application in fullscreen (Kiosk) mode
-        #[arg(short, long)]
+        #[arg(short, long, action = clap::ArgAction::SetTrue)]
-        fullscreen: bool,
+        fullscreen: Option<bool>,
 
         /// Disable native window decorations (frameless window)
-        #[arg(long)]
+        #[arg(long, action = clap::ArgAction::SetTrue)]
-        no_decorations: bool,
+        no_decorations: Option<bool>,
 
         /// Set a custom User-Agent string for the webview
         #[arg(short = 'A', long)]
@@ -127,8 +166,20 @@ enum Commands {
         height: Option<f64>,
 
         /// Force the webview into Dark Mode
-        #[arg(short, long)]
+        #[arg(short, long, action = clap::ArgAction::SetTrue)]
-        dark_mode: bool,
+        dark_mode: Option<bool>,
+
+        /// Backend to use for the updated app
+        #[arg(long, value_enum)]
+        backend: Option<Backend>,
+
+        /// Path to a Chromium-based browser binary (only for `--backend chromium`)
+        #[arg(long)]
+        browser_bin: Option<String>,
+
+        /// Profile isolation for Chromium backend (only for `--backend chromium`)
+        #[arg(long, value_enum)]
+        profile_scope: Option<ProfileScope>,
 
         /// Show planned update actions without rebuilding/installing
         #[arg(long)]
@@ -140,6 +191,23 @@ enum Commands {
     },
 }
 
+#[derive(serde::Serialize, serde::Deserialize, Debug, Clone)]
+struct DeskifyAppConfig {
+    schema_version: u32,
+    id: String,
+    name: String,
+    url: String,
+    backend: Backend,
+    browser_bin: Option<String>,
+    profile_scope: ProfileScope,
+    fullscreen: bool,
+    no_decorations: bool,
+    user_agent: Option<String>,
+    width: Option<f64>,
+    height: Option<f64>,
+    dark_mode: bool,
+}
+
 fn sanitize_app_id(name: &str) -> String {
     let re = Regex::new(r"[^a-z0-9-]").unwrap();
     let lower_name = name.to_lowercase().replace(' ', "-");
@@ -163,6 +231,82 @@ fn validate_remove_id(id: &str) -> Result<()> {
     }
 }
 
+fn profile_scope_str(scope: ProfileScope) -> &'static str {
+    match scope {
+        ProfileScope::Isolated => "isolated",
+        ProfileScope::Shared => "shared",
+    }
+}
+
+fn backend_str(backend: Backend) -> &'static str {
+    match backend {
+        Backend::Tauri => "tauri",
+        Backend::Chromium => "chromium",
+    }
+}
+
+fn deskify_data_dir() -> Result<PathBuf> {
+    let base_dirs = BaseDirs::new().ok_or_else(|| anyhow!("Could not find system BaseDirs"))?;
+    Ok(base_dirs.data_local_dir().join("deskify"))
+}
+
+fn app_config_path(id: &str) -> Result<PathBuf> {
+    validate_remove_id(id)?;
+    Ok(deskify_data_dir()?
+        .join("apps")
+        .join(format!("{}.json", id)))
+}
+
+fn read_app_config(id: &str) -> Result<Option<DeskifyAppConfig>> {
+    let path = app_config_path(id)?;
+    if !path.exists() {
+        return Ok(None);
+    }
+    let content = fs::read_to_string(&path)
+        .with_context(|| format!("Failed to read app config {}", path.display()))?;
+    let cfg: DeskifyAppConfig =
+        serde_json::from_str(&content).context("Failed to parse app config JSON")?;
+    Ok(Some(cfg))
+}
+
+fn write_app_config_from_args(args: &BuildArgs) -> Result<()> {
+    validate_remove_id(&args.internal_id)?;
+    let path = app_config_path(&args.internal_id)?;
+    if let Some(dir) = path.parent() {
+        fs::create_dir_all(dir).context("Failed to create app config directory")?;
+    }
+    let cfg = DeskifyAppConfig {
+        schema_version: 1,
+        id: args.internal_id.clone(),
+        name: args.name.clone(),
+        url: args.url.clone(),
+        backend: args.backend,
+        browser_bin: args.browser_bin.clone(),
+        profile_scope: args.profile_scope,
+        fullscreen: args.fullscreen,
+        no_decorations: args.no_decorations,
+        user_agent: args.user_agent.clone(),
+        width: args.width,
+        height: args.height,
+        dark_mode: args.dark_mode,
+    };
+    fs::write(
+        &path,
+        serde_json::to_string_pretty(&cfg).context("Failed to serialize app config")?,
+    )
+    .with_context(|| format!("Failed to write app config {}", path.display()))?;
+    Ok(())
+}
+
+fn remove_app_config(id: &str) -> Result<()> {
+    let path = app_config_path(id)?;
+    if path.exists() {
+        fs::remove_file(&path).with_context(|| format!("Failed to remove {}", path.display()))?;
+        println!("Removed app config: {:?}", path);
+    }
+    Ok(())
+}
+
 fn build_tauri_config_value(args: &BuildArgs, safe_identifier: &str, bundle_active: bool) -> Value {
     let mut window_config = Map::<String, Value>::new();
     window_config.insert("title".to_string(), json!(args.name));
@@ -207,27 +351,188 @@ fn build_tauri_config_value(args: &BuildArgs, safe_identifier: &str, bundle_acti
     })
 }
 
+fn desktop_exec_escape(arg: &str) -> String {
+    if arg.is_empty() {
+        return "\"\"".to_string();
+    }
+
+    let needs_quotes = arg
+        .chars()
+        .any(|c| c.is_whitespace() || c == '"' || c == '\\');
+    if !needs_quotes {
+        return arg.to_string();
+    }
+
+    let escaped = arg.replace('\\', "\\\\").replace('"', "\\\"");
+    format!("\"{}\"", escaped)
+}
+
+fn desktop_exec_join(args: &[String]) -> String {
+    args.iter()
+        .map(|arg| desktop_exec_escape(arg))
+        .collect::<Vec<_>>()
+        .join(" ")
+}
+
+fn chromium_candidates() -> &'static [&'static str] {
+    &[
+        "google-chrome",
+        "chromium",
+        "chromium-browser",
+        "brave-browser",
+        "vivaldi",
+        "microsoft-edge",
+    ]
+}
+
+fn find_binary_in_path(name: &str) -> Option<PathBuf> {
+    let path_var = env::var_os("PATH")?;
+    for dir in env::split_paths(&path_var) {
+        let candidate = dir.join(name);
+        if candidate.is_file() {
+            return Some(candidate);
+        }
+    }
+    None
+}
+
+fn resolve_chromium_binary(explicit: Option<&str>) -> Result<PathBuf> {
+    if let Some(path) = explicit {
+        let candidate = PathBuf::from(path);
+        if candidate.is_file() {
+            return Ok(candidate);
+        }
+        return Err(anyhow!(
+            "Specified browser binary does not exist or is not a file: {}",
+            candidate.display()
+        ));
+    }
+
+    for candidate in chromium_candidates() {
+        if let Some(path) = find_binary_in_path(candidate) {
+            return Ok(path);
+        }
+    }
+
+    Err(anyhow!(
+        "No Chromium-based browser found in PATH. Install Chromium/Chrome/Brave or use --browser-bin /path/to/browser."
+    ))
+}
+
+fn chromium_profile_dir(internal_id: &str) -> Result<PathBuf> {
+    validate_remove_id(internal_id)?;
+    let base_dirs = BaseDirs::new().ok_or_else(|| anyhow!("Could not find system BaseDirs"))?;
+    Ok(base_dirs
+        .data_local_dir()
+        .join("deskify")
+        .join("profiles")
+        .join(internal_id))
+}
+
+fn chromium_window_size_arg(width: Option<f64>, height: Option<f64>) -> Option<String> {
+    match (width, height) {
+        (Some(w), Some(h)) => Some(format!("--window-size={},{}", w as i64, h as i64)),
+        _ => None,
+    }
+}
+
+fn build_chromium_exec(
+    args: &BuildArgs,
+    browser_path: &Path,
+    profile_dir: Option<&Path>,
+) -> String {
+    let mut parts = vec![browser_path.display().to_string()];
+    parts.push("--no-first-run".to_string());
+    parts.push("--no-default-browser-check".to_string());
+    parts.push(format!("--class={}", args.internal_id));
+    parts.push(format!("--app={}", args.url));
+
+    if let Some(profile_dir) = profile_dir {
+        parts.push(format!("--user-data-dir={}", profile_dir.display()));
+    }
+    if args.fullscreen {
+        parts.push("--start-fullscreen".to_string());
+    }
+    if let Some(window_size) = chromium_window_size_arg(args.width, args.height) {
+        parts.push(window_size);
+    }
+    if let Some(user_agent) = &args.user_agent {
+        parts.push(format!("--user-agent={}", user_agent));
+    }
+    if args.dark_mode {
+        parts.push("--force-dark-mode".to_string());
+    }
+
+    desktop_exec_join(&parts)
+}
+
 fn print_generated_config(args: &BuildArgs) -> Result<()> {
-    let safe_identifier = sanitize_app_id(&args.name);
+    match args.backend {
-    let config = build_tauri_config_value(args, &safe_identifier, false);
+        Backend::Tauri => {
+            let config = build_tauri_config_value(args, &args.internal_id, false);
             println!(
                 "{}",
-        serde_json::to_string_pretty(&config).context("Failed to serialize generated config")?
+                serde_json::to_string_pretty(&config)
+                    .context("Failed to serialize generated config")?
             );
+        }
+        Backend::Chromium => {
+            let browser = resolve_chromium_binary(args.browser_bin.as_deref())?;
+            let profile_dir = chromium_profile_dir(&args.internal_id)?;
+            let profile_dir = match args.profile_scope {
+                ProfileScope::Isolated => Some(profile_dir),
+                ProfileScope::Shared => None,
+            };
+            let exec = build_chromium_exec(args, &browser, profile_dir.as_deref());
+            let value = json!({
+                "backend": "chromium",
+                "name": args.name,
+                "id": args.internal_id,
+                "url": args.url,
+                "browser": browser.display().to_string(),
+                "profileScope": profile_scope_str(args.profile_scope),
+                "exec": exec,
+            });
+            println!(
+                "{}",
+                serde_json::to_string_pretty(&value)
+                    .context("Failed to serialize generated config")?
+            );
+        }
+    }
     Ok(())
 }
 
 fn print_build_plan(action: &str, args: &BuildArgs, existing_id: Option<&str>) {
-    let safe_name = sanitize_app_id(&args.name);
+    let id = existing_id.unwrap_or(&args.internal_id);
     println!("{} plan:", action);
     if let Some(id) = existing_id {
         println!("- Existing app ID: {}", id);
     }
     println!("- URL: {}", args.url);
     println!("- Name: {}", args.name);
-    println!("- New internal ID: {}", safe_name);
+    println!("- Internal ID: {}", id);
+    match args.backend {
+        Backend::Tauri => {
+            println!("- Backend: tauri (system WebView)");
             println!("- Local build: cargo tauri build (temporary generated project)");
             println!("- Install targets: local binary + XDG icon + .desktop entry");
+        }
+        Backend::Chromium => {
+            println!("- Backend: chromium (installed browser runtime)");
+            println!("- Local build: none");
+            println!("- Install targets: XDG icon + .desktop entry (+ optional isolated profile)");
+            println!("- Profile scope: {}", profile_scope_str(args.profile_scope));
+            if let Some(path) = &args.browser_bin {
+                println!("- Browser binary: {}", path);
+            } else {
+                println!("- Browser binary: auto-detect from PATH");
+            }
+            if args.no_decorations {
+                println!("- Note: --no-decorations is not guaranteed in Chromium app mode");
+            }
+        }
+    }
     if args.fullscreen {
         println!("- Window: fullscreen enabled");
     }
@@ -402,8 +707,6 @@ fn main() {
     fs::write(src_dir.join("main.rs"), main_rs).context("Failed to write src/main.rs")?;
 
     // 4. tauri.conf.json
-    let safe_identifier = sanitize_app_id(&args.name);
-
     let dist_dir = project_dir.join("dist");
     fs::create_dir_all(&dist_dir).context("Failed to create dist directory")?;
     fs::write(
@@ -417,7 +720,7 @@ fn main() {
 
     fetch_or_create_icon(&args.url, args.icon.as_ref(), &icons_dir.join("icon.png"))?;
 
-    let tauri_conf = build_tauri_config_value(args, &safe_identifier, false);
+    let tauri_conf = build_tauri_config_value(args, &args.internal_id, false);
     fs::write(
         project_dir.join("tauri.conf.json"),
         serde_json::to_string_pretty(&tauri_conf).context("Failed to serialize tauri.conf.json")?,
@@ -466,9 +769,7 @@ fn build_project(project_dir: &Path) -> Result<PathBuf> {
     }
 }
 
-fn install_app(name: &str, bin_path: &Path, project_dir: &Path) -> Result<()> {
+fn desktop_paths(internal_id: &str) -> Result<(PathBuf, PathBuf, PathBuf, PathBuf)> {
-    let safe_name = sanitize_app_id(name);
-
     let base_dirs =
         BaseDirs::new().ok_or_else(|| anyhow!("Could not find system BaseDirs (e.g. $HOME)"))?;
     let data_local_dir = base_dirs.data_local_dir(); // Usually ~/.local/share
@@ -480,23 +781,46 @@ fn install_app(name: &str, bin_path: &Path, project_dir: &Path) -> Result<()> {
             base_dirs.home_dir().join(".local/bin")
         });
 
+    let applications_dir = data_local_dir.join("applications");
+    let icon_dir = data_local_dir.join("icons/hicolor/128x128/apps");
+    let target_bin = executable_dir.join(internal_id);
+    let target_icon = icon_dir.join(format!("{}.png", internal_id));
+    let desktop_file_path = applications_dir.join(format!("{}.desktop", internal_id));
+
+    Ok((
+        target_bin,
+        target_icon,
+        desktop_file_path,
+        data_local_dir.to_path_buf(),
+    ))
+}
+
+fn install_tauri_app(args: &BuildArgs, bin_path: &Path, project_dir: &Path) -> Result<()> {
+    let (target_bin, target_icon, desktop_file_path, _data_local_dir) =
+        desktop_paths(&args.internal_id)?;
+    let executable_dir = target_bin
+        .parent()
+        .ok_or_else(|| anyhow!("Invalid executable target path"))?;
+    let icon_dir = target_icon
+        .parent()
+        .ok_or_else(|| anyhow!("Invalid icon target path"))?;
+    let applications_dir = desktop_file_path
+        .parent()
+        .ok_or_else(|| anyhow!("Invalid applications target path"))?;
+
     // 1. Move binary
-    fs::create_dir_all(&executable_dir).context("Failed to create ~/.local/bin directory")?;
+    fs::create_dir_all(executable_dir).context("Failed to create ~/.local/bin directory")?;
-    let target_bin = executable_dir.join(&safe_name);
     fs::copy(bin_path, &target_bin).context("Failed to move binary to installation directory")?;
 
     // 2. Install Icon
-    let icon_dir = data_local_dir.join("icons/hicolor/128x128/apps");
+    fs::create_dir_all(icon_dir).context("Failed to create icons directory")?;
-    fs::create_dir_all(&icon_dir).context("Failed to create icons directory")?;
-    let target_icon = icon_dir.join(format!("{}.png", safe_name));
     let source_icon = project_dir.join("icons/icon.png");
     if source_icon.exists() {
         let _ = fs::copy(&source_icon, &target_icon);
     }
 
     // 3. Create .desktop file
-    let applications_dir = data_local_dir.join("applications");
+    fs::create_dir_all(applications_dir).context("Failed to create applications directory")?;
-    fs::create_dir_all(&applications_dir).context("Failed to create applications directory")?;
 
     let desktop_entry = format!(
         r#"
@@ -510,23 +834,107 @@ Terminal=false
 Type=Application
 Categories=Network;WebBrowser;
 X-Deskify-Managed=true
+X-Deskify-Backend=tauri
 "#,
-        name,
+        args.name,
         target_bin.to_string_lossy(),
-        safe_name, // Icon name
+        args.internal_id, // Icon name
-        safe_name  // Window class for wayland/x11 proper grouping
+        args.internal_id  // Window class for wayland/x11 proper grouping
     );
 
-    let desktop_file_path = applications_dir.join(format!("{}.desktop", safe_name));
     fs::write(&desktop_file_path, desktop_entry.trim()).context("Failed to write .desktop file")?;
 
     println!("App successfully installed!");
-    println!("You can now launch '{}' from your application menu.", name);
+    println!(
+        "You can now launch '{}' from your application menu.",
+        args.name
+    );
 
     Ok(())
 }
 
-fn list_apps() -> Result<()> {
+fn install_chromium_app(args: &BuildArgs) -> Result<()> {
+    let browser = resolve_chromium_binary(args.browser_bin.as_deref())?;
+    let profile_dir = match args.profile_scope {
+        ProfileScope::Isolated => Some(chromium_profile_dir(&args.internal_id)?),
+        ProfileScope::Shared => None,
+    };
+
+    if matches!((args.width, args.height), (Some(_), None) | (None, Some(_))) {
+        eprintln!(
+            "Warning: Chromium backend requires both --width and --height for --window-size; ignoring partial size override."
+        );
+    }
+    if args.no_decorations {
+        eprintln!(
+            "Warning: --no-decorations is not reliably supported in Chromium app mode and may be ignored."
+        );
+    }
+
+    let (target_bin, target_icon, desktop_file_path, _data_local_dir) =
+        desktop_paths(&args.internal_id)?;
+    let icon_dir = target_icon
+        .parent()
+        .ok_or_else(|| anyhow!("Invalid icon target path"))?;
+    let applications_dir = desktop_file_path
+        .parent()
+        .ok_or_else(|| anyhow!("Invalid applications target path"))?;
+
+    fs::create_dir_all(icon_dir).context("Failed to create icons directory")?;
+    fs::create_dir_all(applications_dir).context("Failed to create applications directory")?;
+    if let Some(profile_dir) = &profile_dir {
+        fs::create_dir_all(profile_dir).context("Failed to create Chromium profile directory")?;
+    }
+
+    let temp = tempdir().context("Failed to create temporary directory for icon fetch")?;
+    let temp_icon = temp.path().join("icon.png");
+    fetch_or_create_icon(&args.url, args.icon.as_ref(), &temp_icon)?;
+    let _ = fs::copy(&temp_icon, &target_icon);
+
+    let exec = build_chromium_exec(args, &browser, profile_dir.as_deref());
+    let desktop_entry = format!(
+        r#"
+[Desktop Entry]
+Version=1.0
+Name={}
+Exec={}
+Icon={}
+StartupWMClass={}
+Terminal=false
+Type=Application
+Categories=Network;WebBrowser;
+X-Deskify-Managed=true
+X-Deskify-Backend=chromium
+X-Deskify-URL={}
+X-Deskify-ProfileScope={}
+X-Deskify-Browser={}
+"#,
+        args.name,
+        exec,
+        args.internal_id,
+        args.internal_id,
+        args.url,
+        profile_scope_str(args.profile_scope),
+        browser.display()
+    );
+    fs::write(&desktop_file_path, desktop_entry.trim()).context("Failed to write .desktop file")?;
+
+    if target_bin.exists() {
+        println!(
+            "Note: existing binary {} left in place (Chromium backend does not use it).",
+            target_bin.display()
+        );
+    }
+
+    println!("App successfully installed (Chromium backend)!");
+    println!(
+        "You can now launch '{}' from your application menu.",
+        args.name
+    );
+    Ok(())
+}
+
+fn list_apps_with_options(verbose: bool) -> Result<()> {
     let base_dirs = BaseDirs::new().ok_or_else(|| anyhow!("Could not find system BaseDirs"))?;
     let applications_dir = base_dirs.data_local_dir().join("applications");
 
@@ -549,18 +957,48 @@ fn list_apps() -> Result<()> {
                     .and_then(|l| l.strip_prefix("Name="))
                     .unwrap_or("Unknown");
 
-                let exec = content
+                let internal_id = path
+                    .file_stem()
+                    .and_then(|s| s.to_str())
+                    .unwrap_or("Unknown");
+                let backend = content
                     .lines()
-                    .find(|l| l.starts_with("Exec="))
+                    .find(|l| l.starts_with("X-Deskify-Backend="))
-                    .and_then(|l| l.strip_prefix("Exec="))
+                    .and_then(|l| l.strip_prefix("X-Deskify-Backend="))
-                    .unwrap_or("Unknown");
+                    .unwrap_or("legacy");
 
-                let bin_name = Path::new(exec)
+                if verbose && validate_remove_id(internal_id).is_ok() {
-                    .file_name()
+                    if let Some(cfg) = read_app_config(internal_id)? {
-                    .and_then(|n| n.to_str())
+                        println!(
-                    .unwrap_or("Unknown");
+                            "- {} (Internal ID: {}, Backend: {}, URL: {})",
-
+                            name,
-                println!("- {} (Internal ID: {})", name, bin_name);
+                            internal_id,
+                            backend_str(cfg.backend),
+                            cfg.url
+                        );
+                    } else {
+                        let url = content
+                            .lines()
+                            .find(|l| l.starts_with("X-Deskify-URL="))
+                            .and_then(|l| l.strip_prefix("X-Deskify-URL="));
+                        if let Some(url) = url {
+                            println!(
+                                "- {} (Internal ID: {}, Backend: {}, URL: {})",
+                                name, internal_id, backend, url
+                            );
+                        } else {
+                            println!(
+                                "- {} (Internal ID: {}, Backend: {})",
+                                name, internal_id, backend
+                            );
+                        }
+                    }
+                } else {
+                    println!(
+                        "- {} (Internal ID: {}, Backend: {})",
+                        name, internal_id, backend
+                    );
+                }
                 found = true;
             }
         }
@@ -573,6 +1011,29 @@ fn list_apps() -> Result<()> {
     Ok(())
 }
 
+fn read_desktop_entry_value(id: &str, key: &str) -> Result<Option<String>> {
+    validate_remove_id(id)?;
+    let base_dirs = BaseDirs::new().ok_or_else(|| anyhow!("Could not find system BaseDirs"))?;
+    let desktop_path = base_dirs
+        .data_local_dir()
+        .join("applications")
+        .join(format!("{}.desktop", id));
+    if !desktop_path.exists() {
+        return Ok(None);
+    }
+    let content = fs::read_to_string(&desktop_path)
+        .with_context(|| format!("Failed to read desktop entry {}", desktop_path.display()))?;
+    if !is_deskify_desktop_entry(&content) {
+        return Ok(None);
+    }
+    let prefix = format!("{}=", key);
+    Ok(content
+        .lines()
+        .find(|line| line.starts_with(&prefix))
+        .and_then(|line| line.strip_prefix(&prefix))
+        .map(str::to_string))
+}
+
 fn read_installed_app_display_name(id: &str) -> Result<Option<String>> {
     validate_remove_id(id)?;
     let base_dirs = BaseDirs::new().ok_or_else(|| anyhow!("Could not find system BaseDirs"))?;
@@ -653,6 +1114,11 @@ fn run_doctor() -> Result<()> {
         }
     }
 
+    match resolve_chromium_binary(None) {
+        Ok(path) => println!("[ok] chromium browser found: {}", path.display()),
+        Err(_) => println!("[warn] no chromium-based browser found in PATH"),
+    }
+
     let base_dirs = BaseDirs::new().ok_or_else(|| anyhow!("Could not find system BaseDirs"))?;
     let executable_dir = base_dirs
         .executable_dir()
@@ -665,6 +1131,9 @@ fn run_doctor() -> Result<()> {
     println!("[info] executable dir: {}", executable_dir.display());
     println!("[info] applications dir: {}", applications_dir.display());
     println!("[info] icons dir: {}", icons_dir.display());
+    if let Ok(exe) = env::current_exe() {
+        println!("[info] deskify path: {}", exe.display());
+    }
 
     if failed {
         Err(anyhow!("Doctor found critical issues"))
@@ -675,6 +1144,10 @@ fn run_doctor() -> Result<()> {
 }
 
 fn remove_app(safe_name: &str) -> Result<()> {
+    remove_app_with_options(safe_name, true)
+}
+
+fn remove_app_with_options(safe_name: &str, remove_profile: bool) -> Result<()> {
     validate_remove_id(safe_name)?;
 
     let base_dirs = BaseDirs::new().ok_or_else(|| anyhow!("Could not find system BaseDirs"))?;
@@ -716,7 +1189,21 @@ fn remove_app(safe_name: &str) -> Result<()> {
         println!("Icon not found: {:?}", icon_path);
     }
 
+    // 4. Remove Chromium profile (optional)
+    let profile_path = data_local_dir.join("deskify/profiles").join(safe_name);
+    if remove_profile {
+        if profile_path.exists() {
+            fs::remove_dir_all(&profile_path).context("Failed to remove Chromium profile")?;
+            println!("Removed Chromium profile: {:?}", profile_path);
+        } else {
+            println!("Chromium profile not found: {:?}", profile_path);
+        }
+    } else if profile_path.exists() {
+        println!("Keeping Chromium profile: {:?}", profile_path);
+    }
+
     println!("Successfully removed app '{}'.", safe_name);
+    let _ = remove_app_config(safe_name);
     Ok(())
 }
 
@@ -730,6 +1217,8 @@ fn execute_build(args: &BuildArgs, dry_run: bool, print_config: bool) -> Result<
         return Ok(());
     }
 
+    match args.backend {
+        Backend::Tauri => {
             println!(
                 "Generating native app '{}' for URL: {}",
                 args.name, args.url
@@ -748,8 +1237,20 @@ fn execute_build(args: &BuildArgs, dry_run: bool, print_config: bool) -> Result<
                 }
             };
 
-    install_app(&args.name, &bin_path, dir.path())?;
+            install_tauri_app(args, &bin_path, dir.path())?;
+            write_app_config_from_args(args)?;
             Ok(())
+        }
+        Backend::Chromium => {
+            println!(
+                "Installing Chromium app '{}' for URL: {}",
+                args.name, args.url
+            );
+            install_chromium_app(args)?;
+            write_app_config_from_args(args)?;
+            Ok(())
+        }
+    }
 }
 
 fn execute_update(id: &str, args: &BuildArgs, dry_run: bool, print_config: bool) -> Result<()> {
@@ -769,7 +1270,11 @@ fn execute_update(id: &str, args: &BuildArgs, dry_run: bool, print_config: bool)
     }
 
     println!("Updating app '{}' -> '{}' ({})", id, args.name, args.url);
-    remove_app(id)?;
+    let remove_profile = match args.backend {
+        Backend::Chromium => false,
+        Backend::Tauri => true,
+    };
+    remove_app_with_options(id, remove_profile)?;
     execute_build(args, false, false)
 }
 
@@ -787,12 +1292,17 @@ fn main() -> Result<()> {
             width,
             height,
             dark_mode,
+            backend,
+            browser_bin,
+            profile_scope,
             print_config,
             dry_run,
         } => {
+            let internal_id = sanitize_app_id(&name);
             let args = BuildArgs {
                 url,
                 name,
+                internal_id,
                 icon,
                 fullscreen,
                 no_decorations,
@@ -800,11 +1310,14 @@ fn main() -> Result<()> {
                 width,
                 height,
                 dark_mode,
+                backend,
+                browser_bin,
+                profile_scope,
             };
             execute_build(&args, dry_run, print_config)?;
         }
-        Commands::List => {
+        Commands::List { verbose } => {
-            list_apps()?;
+            list_apps_with_options(verbose)?;
         }
         Commands::Doctor => {
             run_doctor()?;
@@ -823,24 +1336,90 @@ fn main() -> Result<()> {
             width,
             height,
             dark_mode,
+            backend,
+            browser_bin,
+            profile_scope,
             dry_run,
             print_config,
         } => {
+            let existing_cfg = read_app_config(&id)?;
+            let resolved_url = if let Some(url) = url {
+                url
+            } else if let Some(cfg) = &existing_cfg {
+                cfg.url.clone()
+            } else if let Some(url) = read_desktop_entry_value(&id, "X-Deskify-URL")? {
+                url
+            } else {
+                return Err(anyhow!(
+                    "Missing --url for update. Provide --url or rebuild once with a recent Deskify version so metadata can be persisted."
+                ));
+            };
+
             let resolved_name = if let Some(name) = name {
                 name
+            } else if let Some(cfg) = &existing_cfg {
+                cfg.name.clone()
             } else {
                 read_installed_app_display_name(&id)?.unwrap_or_else(|| id.clone())
             };
+
+            let resolved_backend = if let Some(backend) = backend {
+                backend
+            } else if let Some(cfg) = &existing_cfg {
+                cfg.backend
+            } else if let Some(b) = read_desktop_entry_value(&id, "X-Deskify-Backend")? {
+                match b.as_str() {
+                    "chromium" => Backend::Chromium,
+                    "tauri" => Backend::Tauri,
+                    _ => Backend::Tauri,
+                }
+            } else {
+                Backend::Tauri
+            };
+
+            let resolved_profile_scope = if let Some(scope) = profile_scope {
+                scope
+            } else if let Some(cfg) = &existing_cfg {
+                cfg.profile_scope
+            } else {
+                ProfileScope::Isolated
+            };
+
+            let resolved_user_agent = if user_agent.is_some() {
+                user_agent
+            } else {
+                existing_cfg.as_ref().and_then(|c| c.user_agent.clone())
+            };
+            let resolved_width = width.or_else(|| existing_cfg.as_ref().and_then(|c| c.width));
+            let resolved_height = height.or_else(|| existing_cfg.as_ref().and_then(|c| c.height));
+            let resolved_browser_bin =
+                browser_bin.or_else(|| existing_cfg.as_ref().and_then(|c| c.browser_bin.clone()));
+
+            let resolved_fullscreen =
+                fullscreen.unwrap_or(existing_cfg.as_ref().map(|c| c.fullscreen).unwrap_or(false));
+            let resolved_no_decorations = no_decorations.unwrap_or(
+                existing_cfg
+                    .as_ref()
+                    .map(|c| c.no_decorations)
+                    .unwrap_or(false),
+            );
+            let resolved_dark_mode =
+                dark_mode.unwrap_or(existing_cfg.as_ref().map(|c| c.dark_mode).unwrap_or(false));
+
             let args = BuildArgs {
-                url,
+                url: resolved_url,
                 name: resolved_name,
+                internal_id: id.clone(),
                 icon,
-                fullscreen,
+                fullscreen: resolved_fullscreen,
-                no_decorations,
+                no_decorations: resolved_no_decorations,
-                user_agent,
+                user_agent: resolved_user_agent,
-                width,
+                width: resolved_width,
-                height,
+                height: resolved_height,
-                dark_mode,
+                dark_mode: resolved_dark_mode,
+                backend: resolved_backend,
+                browser_bin: resolved_browser_bin,
+                profile_scope: resolved_profile_scope,
             };
             execute_update(&id, &args, dry_run, print_config)?;
         }
@@ -851,7 +1430,11 @@ fn main() -> Result<()> {
 
 #[cfg(test)]
 mod tests {
-    use super::{is_deskify_desktop_entry, sanitize_app_id, validate_remove_id};
+    use super::{
+        Backend, BuildArgs, ProfileScope, build_chromium_exec, chromium_window_size_arg,
+        is_deskify_desktop_entry, sanitize_app_id, validate_remove_id,
+    };
+    use std::path::Path;
 
     #[test]
     fn sanitize_app_id_replaces_spaces_and_strips_symbols() {
@@ -891,4 +1474,55 @@ mod tests {
         let content = "[Desktop Entry]\nExec=/usr/bin/firefox\nCategories=Network;WebBrowser;\n";
         assert!(!is_deskify_desktop_entry(content));
     }
+
+    fn sample_build_args() -> BuildArgs {
+        BuildArgs {
+            url: "https://chat.com".to_string(),
+            name: "Chat".to_string(),
+            internal_id: "chat".to_string(),
+            icon: None,
+            fullscreen: false,
+            no_decorations: false,
+            user_agent: None,
+            width: None,
+            height: None,
+            dark_mode: false,
+            backend: Backend::Chromium,
+            browser_bin: None,
+            profile_scope: ProfileScope::Isolated,
+        }
+    }
+
+    #[test]
+    fn chromium_window_size_requires_both_dimensions() {
+        assert_eq!(
+            chromium_window_size_arg(Some(1200.0), Some(800.0)).as_deref(),
+            Some("--window-size=1200,800")
+        );
+        assert!(chromium_window_size_arg(Some(1200.0), None).is_none());
+        assert!(chromium_window_size_arg(None, Some(800.0)).is_none());
+    }
+
+    #[test]
+    fn chromium_exec_contains_required_args() {
+        let mut args = sample_build_args();
+        args.fullscreen = true;
+        args.dark_mode = true;
+        args.user_agent = Some("UA Test".to_string());
+        args.width = Some(1280.0);
+        args.height = Some(720.0);
+        let exec = build_chromium_exec(
+            &args,
+            Path::new("/usr/bin/chromium"),
+            Some(Path::new("/tmp/profile")),
+        );
+        assert!(exec.contains("/usr/bin/chromium"));
+        assert!(exec.contains("--app=https://chat.com"));
+        assert!(exec.contains("--class=chat"));
+        assert!(exec.contains("--user-data-dir=/tmp/profile"));
+        assert!(exec.contains("--start-fullscreen"));
+        assert!(exec.contains("--window-size=1280,720"));
+        assert!(exec.contains("--force-dark-mode"));
+        assert!(exec.contains("--user-agent="));
+    }
 }