feat: complete commercial developer workflowspublish-commercial-control-plane

Add tenant-safe usage observability, prepaid billing controls, API key lifecycle management, Embeddings metering, configurable billing alerts, and resilient provider health propagation. Harden Stripe failure handling, migrations, readiness, and the authenticated control-plane UI with end-to-end verification evidence.

1 files changed, 19 insertions, 3 deletions

diff --git a/internal/domain/types.go b/internal/domain/types.go
index 81da8f2..c700123 100644
--- a/internal/domain/types.go
+++ b/internal/domain/types.go
@@ -5,9 +5,21 @@ import "time"
 type Protocol string
 
 const (
-	ProtocolOpenAI          Protocol = "openai"
-	ProtocolOpenAIResponses Protocol = "openai_responses"
-	ProtocolAnthropic       Protocol = "anthropic"
+	ProtocolOpenAI           Protocol = "openai"
+	ProtocolOpenAIResponses  Protocol = "openai_responses"
+	ProtocolOpenAIEmbeddings Protocol = "openai_embeddings"
+	ProtocolAnthropic        Protocol = "anthropic"
+)
+
+// MeteringUnit defines the physical quantity a price applies to. Token-priced
+// endpoints are implemented today; image and second keep future media pricing
+// explicit instead of overloading token counters.
+type MeteringUnit string
+
+const (
+	MeteringUnitToken  MeteringUnit = "token"
+	MeteringUnitImage  MeteringUnit = "image"
+	MeteringUnitSecond MeteringUnit = "second"
 )
 
 type Principal struct {
@@ -17,6 +29,9 @@ type Principal struct {
 	Scopes             []string
 	AllowedModels      map[string]struct{}
 	MonthlySpendMicros int64
+	DailySpendMicros   int64
+	RequestsPerMinute  int64
+	TokensPerMinute    int64
 	ExpiresAt          *time.Time
 }
 
@@ -126,6 +141,7 @@ type UsageEvent struct {
 	Attempts      int       `json:"attempts"`
 	StartedAt     time.Time `json:"started_at"`
 	DurationMS    int64     `json:"duration_ms"`
+	TTFTMS        int64     `json:"ttft_ms,omitempty"`
 	Usage         Usage     `json:"usage"`
 	UsageReported bool      `json:"usage_reported"`
 }