style: Extract UI constants and refactor main view rendering (#30)

- [x] Add golangci-lint configuration with gocritic ifElseChain disabled
- [x] Rename error variables to avoid shadowing (createErr, watcherErr, watchErr, etc.)
- [x] Replace `interface{}` with `any` type alias throughout codebase
- [x] Add package-level documentation comments to all internal packages
- [x] Reorder struct fields alphabetically for consistency
- [x] Extract UI constants (terminal dimensions, column widths, colors) to constants.go
- [x] Refactor BubbleTeaUI main view rendering into smaller helper functions
- [x] Simplify nested conditionals and improve code clarity
- [x] Add `isForwardDisabled()` helper method to BubbleTeaUI
- [x] Update file permissions from 0644 to 0600 in config tests
- [x] Add `#nosec` comments and error suppression where appropriate
- [x] Improve test table struct field ordering for readability
- [x] Fix resource parsing in AddForward using strings.SplitN
- [x] Add comprehensive tests for new UI helper functions and constants

internal/forward/worker_unit_test.go

@@ -55,8 +55,8 @@ func TestLogWriter_Write(t *testing.T) {
 func TestForwardWorker_GetForward(t *testing.T) {
 	tests := []struct {
 		name        string
-		forward     config.Forward
 		description string
+		forward     config.Forward
 	}{
 		{
 			name: "get pod forward",
@@ -141,9 +141,9 @@ func TestForwardWorker_IsRunning(t *testing.T) {
 func TestForwardID(t *testing.T) {
 	tests := []struct {
 		name         string
+		description  string
 		forward      config.Forward
 		expectUnique bool
-		description  string
 	}{
 		{
 			name: "unique IDs for different forwards",
@@ -183,9 +183,9 @@ func TestForwardID(t *testing.T) {
 func TestForwardString(t *testing.T) {
 	tests := []struct {
 		name             string
-		forward          config.Forward
-		expectedContains []string
 		description      string
+		expectedContains []string
+		forward          config.Forward
 	}{
 		{
 			name: "pod forward string",
@@ -259,8 +259,8 @@ func TestSleepWithBackoffConcept(t *testing.T) {
 func TestWorkerVerboseMode(t *testing.T) {
 	tests := []struct {
 		name        string
-		verbose     bool
 		description string
+		verbose     bool
 	}{
 		{
 			name:        "verbose mode enabled",