Add automatic retry policy for AI jobs

internal/store/retry_policy_test.go

@@ -0,0 +1,37 @@
+package store
+
+import (
+	"testing"
+	"time"
+)
+
+func TestRetryPolicyForError(t *testing.T) {
+	tests := []struct {
+		name      string
+		code      string
+		retryable bool
+		delay     time.Duration
+	}{
+		{name: "provider unavailable", code: "provider_unavailable", retryable: true, delay: 30 * time.Second},
+		{name: "model unavailable", code: "model_unavailable", retryable: true, delay: 30 * time.Second},
+		{name: "timeout", code: "timeout", retryable: true, delay: 30 * time.Second},
+		{name: "storage", code: "storage_error", retryable: true, delay: 30 * time.Second},
+		{name: "bad response", code: "bad_response", retryable: true, delay: 2 * time.Minute},
+		{name: "unknown", code: "unknown", retryable: true, delay: 2 * time.Minute},
+		{name: "bad audio", code: "bad_audio"},
+		{name: "bad input", code: "bad_input"},
+		{name: "context length", code: "context_length"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := retryPolicyForError(tt.code)
+			if got.Retryable != tt.retryable {
+				t.Fatalf("Retryable = %v, want %v", got.Retryable, tt.retryable)
+			}
+			if got.Delay != tt.delay {
+				t.Fatalf("Delay = %s, want %s", got.Delay, tt.delay)
+			}
+		})
+	}
+}