feat: Add Windows support and stabilize SDK installation (v1.0.0-rc1)

Complete Windows compatibility overhaul with robust cross-platform SDK management.
This release candidate establishes feature freeze for the 1.0.0 release.

Key improvements:
- Fixed Android SDK installation on Windows
  * Use cmd.exe wrapper for sdkmanager.bat with piped stdin
  * Properly reorganize cmdline-tools directory structure
  * Write license acceptances synchronously to avoid hangs

- Fixed FTC SDK configuration
  * Auto-generate local.properties with Android SDK path
  * Escape backslashes in Kotlin build.gradle.kts strings
  * Support both new installs and upgrades via ensure_local_properties()

- Enhanced Windows console output
  * Enable ANSI color support via enable_ansi_support crate
  * Maintain color compatibility across Windows versions

- Improved error handling and debugging
  * Added comprehensive logging throughout SDK installation
  * Better context messages for troubleshooting failures

Cross-platform testing verified on:
- Windows 11 with Eclipse Adoptium JDK 21
- Linux (existing support maintained)

Breaking changes: None
This RC introduces feature freeze - subsequent 1.0.x releases will be
bug fixes only. New features deferred to 1.1.0.

Closes Windows compatibility milestone.

src/commands/upgrade.rs

@@ -20,6 +20,9 @@ pub fn upgrade_project(path: &str) -> Result<()> {
     // Get SDK config
     let sdk_config = crate::sdk::SdkConfig::new()?;
     
+    // Ensure FTC SDK has local.properties (in case it was installed before this feature)
+    ensure_local_properties(&sdk_config)?;
+    
     // Load or create project config
     let project_config = if has_config {
         println!("Found existing .weevil.toml");
@@ -115,5 +118,23 @@ pub fn upgrade_project(path: &str) -> Result<()> {
     println!("Test it: ./gradlew test");
     println!();
     
+    Ok(())
+}
+
+fn ensure_local_properties(sdk_config: &crate::sdk::SdkConfig) -> Result<()> {
+    let local_properties_path = sdk_config.ftc_sdk_path.join("local.properties");
+    
+    if !local_properties_path.exists() {
+        println!("Creating local.properties in FTC SDK...");
+        let android_sdk_str = sdk_config.android_sdk_path
+            .display()
+            .to_string()
+            .replace("\\", "/");
+        
+        let local_properties = format!("sdk.dir={}\n", android_sdk_str);
+        fs::write(&local_properties_path, local_properties)?;
+        println!("{} Created local.properties", "✓".green());
+    }
+    
     Ok(())
 }