feat(cursor): add independent Cursor protocol debugging proxy and build tasks

- Introduced a new task for running the Cursor protocol debugging proxy.
- Added a build task for the Cursor protocol debugging proxy.
- Updated documentation to include usage instructions for the debugging tool.

cursor-proxy-debugger/store.go

@@ -0,0 +1,162 @@
+package proxydebugger
+
+import (
+	"sort"
+	"sync"
+	"time"
+)
+
+type exchangeStore struct {
+	mu          sync.RWMutex
+	max         int
+	order       []string
+	exchanges   map[string]*Exchange
+	subscribers map[chan storeEvent]struct{}
+}
+
+func newExchangeStore(max int) *exchangeStore {
+	return &exchangeStore{
+		max:         max,
+		exchanges:   make(map[string]*Exchange),
+		subscribers: make(map[chan storeEvent]struct{}),
+	}
+}
+
+func (store *exchangeStore) create(exchange *Exchange) {
+	store.mu.Lock()
+	store.exchanges[exchange.ID] = exchange
+	store.order = append([]string{exchange.ID}, store.order...)
+	for len(store.order) > store.max {
+		oldest := store.order[len(store.order)-1]
+		store.order = store.order[:len(store.order)-1]
+		delete(store.exchanges, oldest)
+	}
+	store.mu.Unlock()
+	store.publish(storeEvent{Type: "created", ID: exchange.ID})
+}
+
+func (store *exchangeStore) update(id string, apply func(*Exchange)) {
+	store.mu.Lock()
+	if exchange := store.exchanges[id]; exchange != nil {
+		apply(exchange)
+	}
+	store.mu.Unlock()
+	store.publish(storeEvent{Type: "updated", ID: id})
+}
+
+func (store *exchangeStore) summaries() []ExchangeSummary {
+	store.mu.RLock()
+	defer store.mu.RUnlock()
+	result := make([]ExchangeSummary, 0, len(store.order))
+	for _, id := range store.order {
+		if exchange := store.exchanges[id]; exchange != nil {
+			result = append(result, exchange.ExchangeSummary)
+		}
+	}
+	return result
+}
+
+func (store *exchangeStore) get(id string) (Exchange, bool) {
+	store.mu.RLock()
+	defer store.mu.RUnlock()
+	exchange := store.exchanges[id]
+	if exchange == nil {
+		return Exchange{}, false
+	}
+	return cloneExchange(*exchange), true
+}
+
+func (store *exchangeStore) clear() {
+	store.mu.Lock()
+	store.order = nil
+	store.exchanges = make(map[string]*Exchange)
+	store.mu.Unlock()
+	store.publish(storeEvent{Type: "cleared"})
+}
+
+func (store *exchangeStore) subscribe() (<-chan storeEvent, func()) {
+	updates := make(chan storeEvent, 32)
+	store.mu.Lock()
+	store.subscribers[updates] = struct{}{}
+	store.mu.Unlock()
+	return updates, func() {
+		store.mu.Lock()
+		if _, ok := store.subscribers[updates]; ok {
+			delete(store.subscribers, updates)
+			close(updates)
+		}
+		store.mu.Unlock()
+	}
+}
+
+func (store *exchangeStore) publish(event storeEvent) {
+	store.mu.RLock()
+	defer store.mu.RUnlock()
+	for subscriber := range store.subscribers {
+		select {
+		case subscriber <- event:
+		default:
+		}
+	}
+}
+
+func cloneExchange(exchange Exchange) Exchange {
+	exchange.Request = clonePayload(exchange.Request)
+	exchange.Response = clonePayload(exchange.Response)
+	return exchange
+}
+
+func clonePayload(payload Payload) Payload {
+	payload.Headers = append([]Header(nil), payload.Headers...)
+	payload.Frames = append([]FrameView(nil), payload.Frames...)
+	return payload
+}
+
+func elapsedMS(startedAt time.Time) int64 {
+	if startedAt.IsZero() {
+		return 0
+	}
+	return time.Since(startedAt).Milliseconds()
+}
+
+func sortedHeaders(headers map[string][]string) []Header {
+	result := make([]Header, 0, len(headers))
+	for name, values := range headers {
+		value := ""
+		for index, item := range values {
+			if index > 0 {
+				value += ", "
+			}
+			value += item
+		}
+		if isSensitiveHeader(name) && value != "" {
+			value = "[已隐藏]"
+		}
+		result = append(result, Header{Name: name, Value: value})
+	}
+	sort.Slice(result, func(left, right int) bool {
+		return result[left].Name < result[right].Name
+	})
+	return result
+}
+
+func isSensitiveHeader(name string) bool {
+	switch httpCanonicalLower(name) {
+	case "authorization", "cookie", "set-cookie", "proxy-authorization", "x-api-key":
+		return true
+	default:
+		return false
+	}
+}
+
+func httpCanonicalLower(value string) string {
+	buffer := make([]byte, len(value))
+	for index := range value {
+		character := value[index]
+		if character >= 'A' && character <= 'Z' {
+			character += 'a' - 'A'
+		}
+		buffer[index] = character
+	}
+	return string(buffer)
+}