fix: docker version check, uv PATH, install progress bar

- Fix Docker latest version: use moby/moby instead of docker/compose
- Fix uv install: add ~/.local/bin to PATH in shell rc after install
- Add progress bar during tool installation in dashboard
- Show spinner + per-tool progress with X/Y counter
- Disable install key while installation is running

💘 Generated with Crush

Assisted-by: GLM-5.1 via Crush <crush@charm.land>

internal/installer/installer.go

@@ -344,7 +344,14 @@ func (i *Installer) installUv() InstallResult {
 	var cmd *exec.Cmd
 	switch i.system.OS {
 	case platform.Linux, platform.MacOS:
+		home, _ := os.UserHomeDir()
 		cmd = exec.Command("bash", "-c", "curl -LsSf https://astral.sh/uv/install.sh | sh")
+		if output, err := cmd.CombinedOutput(); err != nil {
+			return InstallResult{Tool: "uv", Success: false, Message: fmt.Sprintf("install failed: %s: %s", err, string(output))}
+		}
+		rcFile := i.getRCFile()
+		appendLine(rcFile, "export PATH="+home+"/.local/bin:$PATH")
+		return InstallResult{Tool: "uv", Success: true, Message: "installed (added ~/.local/bin to PATH)"}
 	case platform.Windows:
 		cmd = exec.Command("powershell", "-Command", "irm https://astral.sh/uv/install.ps1 | iex")
 	default: