feat(runtime): add Ruby provider

.dtvem/runtimes.json

@@ -1,4 +1,6 @@
 {
   "$schema": "https://raw.githubusercontent.com/dtvem/dtvem/main/schemas/runtimes.schema.json",
-  "node": "22.0.0"
-}
+  "node": "22.0.0",
+  "python": "3.8.9",
+  "ruby": "3.3.9"
+}

schemas/runtimes.schema.json

@@ -10,10 +10,11 @@
     "pattern": "^[0-9]+\\.[0-9]+\\.[0-9]+$"
   },
   "propertyNames": {
-    "description": "Runtime name (e.g., 'python', 'node'). NOTE: When adding a new runtime provider, update this enum list to include the new runtime name.",
+    "description": "Runtime name (e.g., 'python', 'node', 'ruby'). NOTE: When adding a new runtime provider, update this enum list to include the new runtime name.",
     "enum": [
       "python",
-      "node"
+      "node",
+      "ruby"
     ]
   },
   "examples": [

src/internal/runtime/registry_test.go

@@ -10,9 +10,9 @@ type mockProvider struct {
 	displayName string
 }
 
-func (m *mockProvider) Name() string        { return m.name }
-func (m *mockProvider) DisplayName() string { return m.displayName }
-func (m *mockProvider) Shims() []string     { return []string{m.name} }
+func (m *mockProvider) Name() string                                                  { return m.name }
+func (m *mockProvider) DisplayName() string                                           { return m.displayName }
+func (m *mockProvider) Shims() []string                                               { return []string{m.name} }
 func (m *mockProvider) Install(version string) error                                  { return nil }
 func (m *mockProvider) Uninstall(version string) error                                { return nil }
 func (m *mockProvider) ListInstalled() ([]InstalledVersion, error)                    { return nil, nil }

src/internal/tui/styles.go

@@ -59,12 +59,12 @@ func initStyles() {
 		lipgloss.SetColorProfile(termenv.TrueColor)
 
 		// Color palette
-		colorPrimary = lipgloss.Color("39")   // Cyan
+		colorPrimary = lipgloss.Color("39")    // Cyan
 		colorSecondary = lipgloss.Color("213") // Magenta/Pink
-		colorSuccess = lipgloss.Color("42")   // Green
-		colorWarning = lipgloss.Color("214")  // Orange/Yellow
-		colorError = lipgloss.Color("196")    // Red
-		colorMuted = lipgloss.Color("245")    // Gray
+		colorSuccess = lipgloss.Color("42")    // Green
+		colorWarning = lipgloss.Color("214")   // Orange/Yellow
+		colorError = lipgloss.Color("196")     // Red
+		colorMuted = lipgloss.Color("245")     // Gray
 
 		// Text styles
 		StyleTitle = lipgloss.NewStyle().

src/main.go

@@ -6,6 +6,7 @@ import (
 	// Import runtime providers to register them
 	_ "github.com/dtvem/dtvem/src/runtimes/node"
 	_ "github.com/dtvem/dtvem/src/runtimes/python"
+	_ "github.com/dtvem/dtvem/src/runtimes/ruby"
 )
 
 func main() {