Initial commit of Descrybe v2 without local scratch artifacts.

Drop one-shot tmp/axe scripts and agent i18n scratch so the Gitea tree is deployable.

apps/api/internal/campaigns/service.go

@@ -0,0 +1,79 @@
+package campaigns
+
+import (
+	"net/http"
+	"sync"
+	"time"
+
+	"github.com/descrybe/descrybe-v2/apps/api/internal/aiprompts"
+	"github.com/descrybe/descrybe-v2/apps/api/internal/aiprovider"
+	"github.com/descrybe/descrybe-v2/apps/api/internal/billing"
+	"github.com/descrybe/descrybe-v2/apps/api/internal/email"
+	"github.com/descrybe/descrybe-v2/apps/api/internal/processing"
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+// Service is the email campaigns API surface (CRUD + generate + schedule/send).
+// Tenant sending goes through email.Service (verified provider, rate limits, unsub).
+type Service struct {
+	Pool         *pgxpool.Pool
+	Billing      *billing.Service
+	Email        *email.Service
+	Completer    processing.Completer
+	AI           *aiprovider.Service
+	Prompts      *aiprompts.Service
+	WebOrigin    string
+	PublicAPIURL string
+	// TokenSigningSecret signs public brand-logo URLs for email embeds.
+	TokenSigningSecret string
+	HTTP               *http.Client
+
+	genMu   sync.Mutex
+	genHit  map[string][]time.Time
+	sendMu  sync.Mutex
+	sendHit map[string][]time.Time
+}
+
+func NewService(pool *pgxpool.Pool, billingSvc *billing.Service, emailSvc *email.Service) *Service {
+	return &Service{
+		Pool:    pool,
+		Billing: billingSvc,
+		Email:   emailSvc,
+		HTTP:    &http.Client{Timeout: 30 * time.Second},
+		genHit:  make(map[string][]time.Time),
+		sendHit: make(map[string][]time.Time),
+	}
+}
+
+const (
+	generateRPM = 10
+	sendRPM     = 20
+)
+
+func (s *Service) allowGenerate(companyID string) bool {
+	return allowWindow(&s.genMu, s.genHit, companyID, generateRPM, time.Minute)
+}
+
+func (s *Service) allowSend(companyID string) bool {
+	return allowWindow(&s.sendMu, s.sendHit, companyID, sendRPM, time.Minute)
+}
+
+func allowWindow(mu *sync.Mutex, hits map[string][]time.Time, key string, limit int, window time.Duration) bool {
+	now := time.Now()
+	cutoff := now.Add(-window)
+	mu.Lock()
+	defer mu.Unlock()
+	ts := hits[key]
+	kept := ts[:0]
+	for _, t := range ts {
+		if t.After(cutoff) {
+			kept = append(kept, t)
+		}
+	}
+	if len(kept) >= limit {
+		hits[key] = kept
+		return false
+	}
+	hits[key] = append(kept, now)
+	return true
+}