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/httplog/logger.go

@@ -1,3 +1,15 @@
+// Package httplog provides HTTP request/response logging for port forwards.
+// It captures HTTP traffic passing through the forward proxy and stores
+// entries for viewing in the UI.
+//
+// The logger supports:
+//   - Request and response capture with headers and bodies
+//   - Configurable body size limits to prevent memory issues
+//   - Callback-based notifications for real-time log viewing
+//   - Thread-safe operation for concurrent forwards
+//
+// Bodies are truncated if they exceed the configured maximum size
+// (default: 1MB) and marked as truncated in the log entry.
 package httplog
 
 import (
@@ -11,17 +23,17 @@ import (
 // Entry represents a single HTTP log entry
 type Entry struct {
 	Timestamp  time.Time         `json:"timestamp"`
+	Headers    map[string]string `json:"headers,omitempty"`
 	ForwardID  string            `json:"forward_id"`
 	RequestID  string            `json:"request_id"`
-	Direction  string            `json:"direction"` // "request" or "response"
+	Direction  string            `json:"direction"`
 	Method     string            `json:"method,omitempty"`
 	Path       string            `json:"path,omitempty"`
-	StatusCode int               `json:"status_code,omitempty"`
-	Headers    map[string]string `json:"headers,omitempty"`
-	BodySize   int               `json:"body_size"`
 	Body       string            `json:"body,omitempty"`
-	LatencyMs  int64             `json:"latency_ms,omitempty"`
 	Error      string            `json:"error,omitempty"`
+	StatusCode int               `json:"status_code,omitempty"`
+	BodySize   int               `json:"body_size"`
+	LatencyMs  int64             `json:"latency_ms,omitempty"`
 }
 
 // LogCallback is a function that receives log entries
@@ -29,12 +41,12 @@ type LogCallback func(entry Entry)
 
 // Logger writes HTTP log entries to an output stream
 type Logger struct {
-	mu         sync.Mutex
 	output     io.Writer
-	file       *os.File // Only set if we opened the file ourselves
+	file       *os.File
 	forwardID  string
-	maxBodyLen int
 	callbacks  []LogCallback
+	maxBodyLen int
+	mu         sync.Mutex
 }
 
 // NewLogger creates a new HTTP logger

internal/httplog/logger_test.go

@@ -166,15 +166,15 @@ func TestLogger_Log_Error(t *testing.T) {
 func TestLogger_BodyTruncation(t *testing.T) {
 	tests := []struct {
 		name        string
-		maxBodyLen  int
 		body        string
+		maxBodyLen  int
 		expectTrunc bool
 	}{
-		{"body under limit", 100, "short", false},
-		{"body at limit", 5, "exact", false},
-		{"body over limit", 5, "this is too long", true},
-		{"empty body", 100, "", false},
-		{"zero max", 0, "any", true},
+		{name: "body under limit", maxBodyLen: 100, body: "short", expectTrunc: false},
+		{name: "body at limit", maxBodyLen: 5, body: "exact", expectTrunc: false},
+		{name: "body over limit", maxBodyLen: 5, body: "this is too long", expectTrunc: true},
+		{name: "empty body", maxBodyLen: 100, body: "", expectTrunc: false},
+		{name: "zero max", maxBodyLen: 0, body: "any", expectTrunc: true},
 	}
 
 	for _, tt := range tests {
@@ -186,10 +186,10 @@ func TestLogger_BodyTruncation(t *testing.T) {
 				output:     &buf,
 			}
 
-			l.Log(Entry{Body: tt.body})
+			_ = l.Log(Entry{Body: tt.body})
 
 			var entry Entry
-			json.Unmarshal(buf.Bytes(), &entry)
+			_ = json.Unmarshal(buf.Bytes(), &entry)
 
 			if tt.expectTrunc {
 				assert.Contains(t, entry.Body, "...(truncated)")
@@ -219,9 +219,9 @@ func TestLogger_Callbacks(t *testing.T) {
 	})
 
 	// Log entries
-	l.Log(Entry{Direction: "request", Path: "/api/1"})
-	l.Log(Entry{Direction: "response", Path: "/api/1"})
-	l.Log(Entry{Direction: "request", Path: "/api/2"})
+	_ = l.Log(Entry{Direction: "request", Path: "/api/1"})
+	_ = l.Log(Entry{Direction: "response", Path: "/api/1"})
+	_ = l.Log(Entry{Direction: "request", Path: "/api/2"})
 
 	mu.Lock()
 	assert.Len(t, received, 3)
@@ -244,7 +244,7 @@ func TestLogger_MultipleCallbacks(t *testing.T) {
 	l.AddCallback(func(entry Entry) { count1++ })
 	l.AddCallback(func(entry Entry) { count2++ })
 
-	l.Log(Entry{})
+	_ = l.Log(Entry{})
 
 	assert.Equal(t, 1, count1)
 	assert.Equal(t, 1, count2)
@@ -261,12 +261,12 @@ func TestLogger_ClearCallbacks(t *testing.T) {
 	count := 0
 	l.AddCallback(func(entry Entry) { count++ })
 
-	l.Log(Entry{})
+	_ = l.Log(Entry{})
 	assert.Equal(t, 1, count)
 
 	l.ClearCallbacks()
 
-	l.Log(Entry{})
+	_ = l.Log(Entry{})
 	assert.Equal(t, 1, count) // Still 1 - callback was cleared
 }
 
@@ -321,7 +321,7 @@ func TestLogger_Concurrent(t *testing.T) {
 		wg.Add(1)
 		go func(n int) {
 			defer wg.Done()
-			l.Log(Entry{
+			_ = l.Log(Entry{
 				Direction: "request",
 				Path:      "/api/" + string(rune('a'+n%26)),
 			})

internal/httplog/proxy.go

@@ -15,20 +15,21 @@ import (
 	"time"
 
 	"github.com/nvm/kportal/internal/config"
+	"github.com/nvm/kportal/internal/logger"
 )
 
 // Proxy is an HTTP reverse proxy with logging capabilities
 type Proxy struct {
-	localPort    int // Port to listen on (user-facing)
-	targetPort   int // Port to forward to (k8s tunnel)
+	listener     net.Listener
 	logger       *Logger
 	server       *http.Server
 	forwardID    string
-	filterPath   string // Glob pattern for path filtering
-	includeHdrs  bool
-	listener     net.Listener
+	filterPath   string
+	localPort    int
+	targetPort   int
 	requestCount uint64
 	mu           sync.Mutex
+	includeHdrs  bool
 	running      bool
 }
 
@@ -100,7 +101,7 @@ func (p *Proxy) Start() error {
 	// Start serving (blocking)
 	go func() {
 		if err := p.server.Serve(ln); err != nil && err != http.ErrServerClosed {
-			// Log error but don't crash - proxy will be replaced on reconnect
+			logger.Debug("HTTP proxy serve error (will be replaced on reconnect)", map[string]any{"error": err.Error()})
 		}
 	}()
 

internal/httplog/proxy_test.go

@@ -331,7 +331,7 @@ func TestProxy_Start_PortInUse(t *testing.T) {
 	}
 	err := proxy1.Start()
 	require.NoError(t, err)
-	defer proxy1.Stop()
+	defer func() { _ = proxy1.Stop() }()
 
 	// Get the actual port
 	addr := proxy1.listener.Addr().(*net.TCPAddr)
@@ -353,9 +353,9 @@ func TestProxy_Start_PortInUse(t *testing.T) {
 // TestFlattenHeaders_EdgeCases tests header flattening edge cases
 func TestFlattenHeaders_EdgeCases(t *testing.T) {
 	tests := []struct {
-		name     string
 		headers  http.Header
 		expected map[string]string
+		name     string
 	}{
 		{
 			name:     "empty headers",