updated s3_key name to icon_hash

pipeline/03_icon_download/db.go

@@ -43,7 +43,7 @@ func claimBatch(ctx context.Context, pool *pgxpool.Pool, limit int) ([]IconRow,
 
 // DownloadResult holds the outcome of downloading one icon.
 type DownloadResult struct {
-	S3Key       string
+	IconHash       string
 	ContentType string
 	Width       int
 	Height      int
@@ -65,14 +65,14 @@ func updateIcon(ctx context.Context, pool *pgxpool.Pool, iconID int64, result Do
 	_, err := pool.Exec(ctx, `
 		UPDATE icons SET
 			scan_state = 'completed',
-			s3_key = $1,
+			icon_hash = $1,
 			content_type = $2,
 			width = $3,
 			height = $4,
 			file_size = $5,
 			downloaded_at = now()
 		WHERE id = $6`,
-		result.S3Key, result.ContentType,
+		result.IconHash, result.ContentType,
 		nilIntIf(result.Width, 0), nilIntIf(result.Height, 0),
 		result.FileSize, iconID)
 	return err

pipeline/03_icon_download/download.go

@@ -37,22 +37,22 @@ func processIcon(icon IconRow, cfg Config) DownloadResult {
 
 	// Compute SHA-256 for content-addressed storage
 	hash := sha256.Sum256(data)
-	s3Key := hex.EncodeToString(hash[:])
+	iconHash := hex.EncodeToString(hash[:])
 
 	// Write to disk (skip if already exists — dedup)
 	dedup := false
 	if !cfg.DryRun {
-		if iconExists(s3Key) {
+		if iconExists(iconHash) {
 			dedup = true
 		} else {
-			if err := iconWrite(s3Key, data); err != nil {
+			if err := iconWrite(iconHash, data); err != nil {
 				return DownloadResult{Err: fmt.Sprintf("disk write: %v", err), ErrType: "other"}
 			}
 		}
 	}
 
 	return DownloadResult{
-		S3Key:       s3Key,
+		IconHash:       iconHash,
 		ContentType: contentType,
 		Width:       width,
 		Height:      height,