Refactor code into modular structure and add comprehensive tests

- Split main.rs into 10 focused modules for better maintainability
- Add 37 unit tests covering desktop entry, Tauri config, validation,
  Chromium backend, and app config serialization
- Update version to v0.1.1-alpha.1

src/types.rs

@@ -0,0 +1,161 @@
+use clap::{Parser, Subcommand};
+
+#[derive(
+    clap::ValueEnum, serde::Serialize, serde::Deserialize, Debug, Clone, Copy, PartialEq, Eq,
+)]
+#[serde(rename_all = "lowercase")]
+pub enum Backend {
+    Tauri,
+    Chromium,
+}
+
+#[derive(
+    clap::ValueEnum, serde::Serialize, serde::Deserialize, Debug, Clone, Copy, PartialEq, Eq,
+)]
+#[serde(rename_all = "lowercase")]
+pub enum ProfileScope {
+    #[serde(alias = "default")]
+    Isolated,
+    Shared,
+}
+
+#[derive(Debug, Clone)]
+pub struct BuildArgs {
+    pub url: String,
+    pub name: String,
+    pub internal_id: String,
+    pub icon: Option<String>,
+    pub fullscreen: bool,
+    pub no_decorations: bool,
+    pub user_agent: Option<String>,
+    pub width: Option<f64>,
+    pub height: Option<f64>,
+    pub dark_mode: bool,
+    pub backend: Backend,
+    pub browser_bin: Option<String>,
+    pub profile_scope: ProfileScope,
+}
+
+#[derive(serde::Serialize, serde::Deserialize, Debug, Clone)]
+pub struct DeskifyAppConfig {
+    pub schema_version: u32,
+    pub id: String,
+    pub name: String,
+    pub url: String,
+    pub backend: Backend,
+    pub browser_bin: Option<String>,
+    pub profile_scope: ProfileScope,
+    pub fullscreen: bool,
+    pub no_decorations: bool,
+    pub user_agent: Option<String>,
+    pub width: Option<f64>,
+    pub height: Option<f64>,
+    pub dark_mode: bool,
+}
+
+#[derive(Parser, Debug)]
+#[command(author, version, about, long_about = None)]
+pub struct Cli {
+    #[command(subcommand)]
+    pub command: Commands,
+}
+
+#[derive(Subcommand, Debug)]
+pub enum Commands {
+    Build {
+        #[arg(short, long)]
+        url: String,
+
+        #[arg(short, long)]
+        name: String,
+
+        #[arg(short, long)]
+        icon: Option<String>,
+
+        #[arg(short, long)]
+        fullscreen: bool,
+
+        #[arg(long)]
+        no_decorations: bool,
+
+        #[arg(short = 'A', long)]
+        user_agent: Option<String>,
+
+        #[arg(short = 'W', long)]
+        width: Option<f64>,
+
+        #[arg(short = 'H', long)]
+        height: Option<f64>,
+
+        #[arg(short, long)]
+        dark_mode: bool,
+
+        #[arg(long, value_enum, default_value_t = Backend::Tauri)]
+        backend: Backend,
+
+        #[arg(long)]
+        browser_bin: Option<String>,
+
+        #[arg(long, value_enum, default_value_t = ProfileScope::Isolated)]
+        profile_scope: ProfileScope,
+
+        #[arg(long)]
+        print_config: bool,
+
+        #[arg(long)]
+        dry_run: bool,
+    },
+    List {
+        #[arg(long)]
+        verbose: bool,
+    },
+    Doctor,
+    Remove {
+        id: String,
+    },
+    Update {
+        id: String,
+
+        #[arg(short, long)]
+        url: Option<String>,
+
+        #[arg(short, long)]
+        name: Option<String>,
+
+        #[arg(short, long)]
+        icon: Option<String>,
+
+        #[arg(short, long, action = clap::ArgAction::SetTrue)]
+        fullscreen: Option<bool>,
+
+        #[arg(long, action = clap::ArgAction::SetTrue)]
+        no_decorations: Option<bool>,
+
+        #[arg(short = 'A', long)]
+        user_agent: Option<String>,
+
+        #[arg(short = 'W', long)]
+        width: Option<f64>,
+
+        #[arg(short = 'H', long)]
+        height: Option<f64>,
+
+        #[arg(short, long, action = clap::ArgAction::SetTrue)]
+        dark_mode: Option<bool>,
+
+        #[arg(long, value_enum)]
+        backend: Option<Backend>,
+
+        #[arg(long)]
+        browser_bin: Option<String>,
+
+        #[arg(long, value_enum)]
+        profile_scope: Option<ProfileScope>,
+
+        #[arg(long)]
+        dry_run: bool,
+
+        #[arg(long)]
+        print_config: bool,
+    },
+}