Add transcript description prompt context

internal/core/config/flags.go

@@ -1,6 +1,9 @@
 package config
 
-import "fmt"
+import (
+	"fmt"
+	"strings"
+)
 
 type CLIOverrides struct {
 	ModulesCSV                    *string
@@ -30,6 +33,7 @@ type CLIOverrides struct {
 	NormalizeEllipsisGap          *float64
 	NormalizeMaxSegmentDuration   *float64
 	NormalizeMaxSegmentTokens     *int
+	TranscriptDescription         *string
 	WorkDir                       *string
 	WorkDirRetention              *string
 }
@@ -135,6 +139,9 @@ func (c *Config) ApplyCLIOverrides(overrides CLIOverrides) error {
 	if overrides.NormalizeMaxSegmentTokens != nil {
 		c.Normalization.MaxSegmentTokens = *overrides.NormalizeMaxSegmentTokens
 	}
+	if overrides.TranscriptDescription != nil {
+		c.TranscriptDescription = strings.TrimSpace(*overrides.TranscriptDescription)
+	}
 	if overrides.WorkDir != nil {
 		c.WorkDir = *overrides.WorkDir
 	}