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/events/bus.go

@@ -1,3 +1,21 @@
+// Package events provides a publish-subscribe event bus for decoupled
+// communication between kportal components. Events are typed and carry
+// contextual data about forward lifecycle, health status, and configuration
+// changes.
+//
+// Event types include:
+//   - Forward lifecycle: starting, connected, disconnected, reconnecting, stopped, error
+//   - Health: status_changed, stale
+//   - Watchdog: worker_hung
+//   - Config: reloaded
+//
+// Basic usage:
+//
+//	bus := events.NewBus()
+//	bus.Subscribe(events.EventForwardConnected, func(e events.Event) {
+//	    fmt.Printf("Forward %s connected\n", e.ForwardID)
+//	})
+//	bus.Publish(events.Event{Type: events.EventForwardConnected, ForwardID: "..."})
 package events
 
 import (
@@ -29,9 +47,9 @@ const (
 
 // Event represents a system event
 type Event struct {
+	Data      map[string]interface{}
 	Type      EventType
 	ForwardID string
-	Data      map[string]interface{}
 }
 
 // Handler is a function that handles events
@@ -39,8 +57,8 @@ type Handler func(event Event)
 
 // Bus is a simple event bus for decoupled communication between components
 type Bus struct {
-	mu       sync.RWMutex
 	handlers map[EventType][]Handler
+	mu       sync.RWMutex
 	closed   bool
 }