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/logger/klog_bridge_test.go

@@ -17,10 +17,10 @@ func TestKlogWriter(t *testing.T) {
 		input         string
 		expectedLevel string
 		expectedMsg   string
+		description   string
 		loggerLevel   Level
 		loggerFormat  Format
 		shouldLog     bool
-		description   string
 	}{
 		{
 			name:          "info level log",
@@ -162,9 +162,9 @@ func TestKlogWriter(t *testing.T) {
 func TestKlogWriterBuffering(t *testing.T) {
 	tests := []struct {
 		name        string
+		description string
 		writes      []string
 		expectCount int
-		description string
 	}{
 		{
 			name: "single complete line",
@@ -264,7 +264,7 @@ func TestKlogWriterConcurrency(t *testing.T) {
 		go func(id int) {
 			for j := 0; j < numWrites; j++ {
 				msg := fmt.Sprintf("I1124 12:34:56.789012   12345 test.go:123] Message from goroutine %d iteration %d\n", id, j)
-				klogWriter.Write([]byte(msg))
+				_, _ = klogWriter.Write([]byte(msg))
 			}
 			done <- true
 		}(i)