Initial scaffold: project structure, .gitignore, go.mod

internal/icons/states.go

@@ -0,0 +1,30 @@
+package icons
+
+import "image/color"
+
+// State represents the current sync state for icon rendering.
+type State int
+
+const (
+	StateIdle         State = iota // Green — all folders idle
+	StateSyncing                   // Blue — syncing/scanning
+	StatePaused                    // Gray — all paused
+	StateError                     // Red — folder error
+	StateDisconnected              // Dark gray — cannot reach Syncthing
+)
+
+// colors maps each state to its icon color.
+var colors = map[State]color.RGBA{
+	StateIdle:         {76, 175, 80, 255},   // green
+	StateSyncing:      {33, 150, 243, 255},  // blue
+	StatePaused:       {158, 158, 158, 255}, // gray
+	StateError:        {244, 67, 54, 255},   // red
+	StateDisconnected: {97, 97, 97, 255},    // dark gray
+}
+
+func colorForState(s State) color.RGBA {
+	if c, ok := colors[s]; ok {
+		return c
+	}
+	return colors[StateDisconnected]
+}