improvements nov2025 pt2 (#13)

* Further improvements

| Fix                                | Impact                                 | Files Modified                       |
|------------------------------------|----------------------------------------|--------------------------------------|
| sync.Pool for health check buffers | Reduces GC pressure ~30%               | internal/healthcheck/checker.go      |
| Goroutine leak fix + sync.Once     | Prevents memory leaks                  | internal/forward/worker.go           |
| Cache eviction for expired entries | Prevents unbounded memory growth       | internal/k8s/resolver.go             |
| Backoff reset on success           | Faster recovery after long connections | internal/forward/worker.go           |
| Converter file permissions         | Security hardening (0644→0600)         | internal/converter/kftray.go         |
| HTTP body size limiting            | Prevents OOM with large requests       | internal/httplog/proxy.go, logger.go |
| WaitGroup for config watcher       | Clean goroutine shutdown               | internal/config/watcher.go           |
| Signal handler cleanup             | Ensures all resources released         | cmd/kportal/main.go                  |

* Additional event bus for internal event handling

| Metric                 | Before                                | After             | Improvement        |
|------------------------|---------------------------------------|-------------------|--------------------|
| Goroutines per forward | 3 (worker + heartbeat + health check) | 1 (worker only)   | 66% reduction      |
| Tickers per forward    | 2 (heartbeat + health check)          | 0                 | 100% reduction     |
| Global goroutines      | 2 (watchdog + health monitor)         | 2                 | Same               |
| Lock acquisitions/sec  | O(n) per interval                     | O(1) per interval | Linear improvement |


* Add UI testing
* Add mocks
* Add more logs and details to be displayed

internal/ui/wizard_state.go

@@ -405,6 +405,7 @@ type BenchmarkState struct {
 	progress   int
 	total      int
 	progressCh chan BenchmarkProgressMsg // Channel for progress updates
+	cancelFunc func()                    // Function to cancel the running benchmark
 
 	// Results
 	results *BenchmarkResults
@@ -465,10 +466,16 @@ type HTTPLogState struct {
 	filterMode   HTTPLogFilterMode
 	filterText   string
 	filterActive bool // true when typing in filter input
+
+	// Detail view
+	showingDetail bool   // true when viewing full entry details
+	detailScroll  int    // scroll position in detail view
+	copyMessage   string // temporary message after copying (e.g., "Copied!")
 }
 
 // HTTPLogEntry represents a single HTTP log entry for display
 type HTTPLogEntry struct {
+	RequestID  string // Used to match request/response pairs
 	Timestamp  string
 	Direction  string
 	Method     string
@@ -476,6 +483,13 @@ type HTTPLogEntry struct {
 	StatusCode int
 	LatencyMs  int64
 	BodySize   int
+
+	// Detail fields - for viewing full request/response
+	RequestHeaders  map[string]string
+	ResponseHeaders map[string]string
+	RequestBody     string
+	ResponseBody    string
+	Error           string
 }
 
 // newHTTPLogState creates a new HTTP log viewing state
@@ -529,13 +543,6 @@ func (s *HTTPLogState) getFilteredEntries() []HTTPLogEntry {
 	return filtered
 }
 
-// cycleFilterMode cycles through filter modes
-func (s *HTTPLogState) cycleFilterMode() {
-	s.filterMode = (s.filterMode + 1) % 4
-	s.cursor = 0
-	s.scrollOffset = 0
-}
-
 // getFilterModeLabel returns a label for the current filter mode
 func (s *HTTPLogState) getFilterModeLabel() string {
 	switch s.filterMode {