Refactor: separate prompt/profile run resolution with explicit precedence, centralized defaults, and api_key_env validation

internal/defaults/defaults.go

@@ -0,0 +1,34 @@
+package defaults
+
+import (
+	"time"
+
+	"gitea.maximumdirect.net/eric/scriptorium/internal/domain"
+)
+
+const (
+	HTTPAddrDefault            = ":8080"
+	SchemaDirDefault           = "."
+	OutputArtifactName         = "output"
+	ContentTypeTextPlain       = "text/plain"
+	ContentTypeTextMarkdown    = "text/markdown"
+	ContentTypeApplicationJSON = "application/json"
+
+	ExecutionDefaultTemperature    = 0.0
+	ExecutionDefaultMaxTokens      = 0
+	ExecutionDefaultTopP           = 1.0
+	ExecutionDefaultTimeoutSeconds = 600
+)
+
+var (
+	LLMRequestTimeoutDefault = 10 * time.Minute
+)
+
+func ExecutionTargetDefault() domain.ExecutionTarget {
+	return domain.ExecutionTarget{
+		Temperature:    ExecutionDefaultTemperature,
+		MaxTokens:      ExecutionDefaultMaxTokens,
+		TopP:           ExecutionDefaultTopP,
+		TimeoutSeconds: ExecutionDefaultTimeoutSeconds,
+	}
+}