refactor: modernize codebase for Go 1.26 and fix adapter issues

- Upgrade Go version from 1.24 to 1.26.1 with updated dependencies
- Replace interface{} with any type throughout codebase
- Add message deduplication in OneBot11 adapter to prevent duplicate event processing
- URL-encode access token in WebSocket connections to handle special characters
- Remove duplicate bot startup hooks in DI providers (now handled by botManager.StartAll)
- Use slices.Clone and errgroup.Go patterns for cleaner concurrent code
- Apply omitzero JSON tags for optional fields (Go 1.24+ feature)

internal/engine/dispatcher.go

@@ -3,6 +3,7 @@ package engine
 import (
 	"context"
 	"runtime/debug"
+	"slices"
 	"sort"
 	"sync"
 	"sync/atomic"
@@ -238,8 +239,7 @@ func (d *Dispatcher) handleEvent(ctx context.Context, event protocol.Event) {
 func (d *Dispatcher) createHandlerChain(ctx context.Context, event protocol.Event) func(context.Context, protocol.Event) {
 	return func(ctx context.Context, e protocol.Event) {
 		d.mu.RLock()
-		handlers := make([]protocol.EventHandler, len(d.handlers))
-		copy(handlers, d.handlers)
+		handlers := slices.Clone(d.handlers)
 		d.mu.RUnlock()
 
 		for i, handler := range handlers {