fix: support iavl.* pruning config keys with legacy fallback

sei-cosmos/server/pruning.go

@@ -15,17 +15,35 @@ import (
 // PruningOptions. If a pruning strategy is provided, that will be parsed and
 // returned, otherwise, it is assumed custom pruning options are provided.
 func GetPruningOptionsFromFlags(appOpts types.AppOptions) (storetypes.PruningOptions, error) {
-	strategy := strings.ToLower(cast.ToString(appOpts.Get(FlagPruning)))
+	// New format (iavl.*) takes priority, fallback to legacy top-level keys for backward compatibility
+	strategy := cast.ToString(appOpts.Get(FlagIAVLPruning))
+	if strategy == "" {
+		strategy = cast.ToString(appOpts.Get(FlagPruning))
+	}
+	strategy = strings.ToLower(strategy)
 
 	switch strategy {
 	case storetypes.PruningOptionDefault, storetypes.PruningOptionNothing, storetypes.PruningOptionEverything:
 		return storetypes.NewPruningOptionsFromString(strategy), nil
 
 	case storetypes.PruningOptionCustom:
+		keepRecent := appOpts.Get(FlagIAVLPruningKeepRecent)
+		if keepRecent == nil {
+			keepRecent = appOpts.Get(FlagPruningKeepRecent)
+		}
+		keepEvery := appOpts.Get(FlagIAVLPruningKeepEvery)
+		if keepEvery == nil {
+			keepEvery = appOpts.Get(FlagPruningKeepEvery)
+		}
+		interval := appOpts.Get(FlagIAVLPruningInterval)
+		if interval == nil {
+			interval = appOpts.Get(FlagPruningInterval)
+		}
+
 		opts := storetypes.NewPruningOptions(
-			cast.ToUint64(appOpts.Get(FlagPruningKeepRecent)),
-			cast.ToUint64(appOpts.Get(FlagPruningKeepEvery)),
-			cast.ToUint64(appOpts.Get(FlagPruningInterval)),
+			cast.ToUint64(keepRecent),
+			cast.ToUint64(keepEvery),
+			cast.ToUint64(interval),
 		)
 
 		if err := opts.Validate(); err != nil {

sei-cosmos/server/pruning_test.go

@@ -25,6 +25,15 @@ func TestGetPruningOptionsFromFlags(t *testing.T) {
 			},
 			expectedOptions: types.PruneNothing,
 		},
+		{
+			name: FlagIAVLPruning,
+			initParams: func() *viper.Viper {
+				v := viper.New()
+				v.Set(FlagIAVLPruning, types.PruningOptionNothing)
+				return v
+			},
+			expectedOptions: types.PruneNothing,
+		},
 		{
 			name: "custom pruning options",
 			initParams: func() *viper.Viper {
@@ -42,6 +51,23 @@ func TestGetPruningOptionsFromFlags(t *testing.T) {
 				Interval:   10,
 			},
 		},
+		{
+			name: "custom pruning options iavl",
+			initParams: func() *viper.Viper {
+				v := viper.New()
+				v.Set(FlagIAVLPruning, types.PruningOptionCustom)
+				v.Set(FlagIAVLPruningKeepRecent, 1234)
+				v.Set(FlagIAVLPruningKeepEvery, 4321)
+				v.Set(FlagIAVLPruningInterval, 10)
+
+				return v
+			},
+			expectedOptions: types.PruningOptions{
+				KeepRecent: 1234,
+				KeepEvery:  4321,
+				Interval:   10,
+			},
+		},
 		{
 			name: types.PruningOptionDefault,
 			initParams: func() *viper.Viper {
@@ -51,6 +77,17 @@ func TestGetPruningOptionsFromFlags(t *testing.T) {
 			},
 			expectedOptions: types.PruneDefault,
 		},
+		{
+			name: "new format takes priority over legacy",
+			initParams: func() *viper.Viper {
+				v := viper.New()
+				// Both old and new format present - new format should win
+				v.Set(FlagPruning, types.PruningOptionNothing)
+				v.Set(FlagIAVLPruning, types.PruningOptionEverything)
+				return v
+			},
+			expectedOptions: types.PruneEverything,
+		},
 	}
 
 	for _, tt := range tests {

sei-cosmos/server/start.go

@@ -54,10 +54,19 @@ const (
 	FlagProfile            = "profile"
 	FlagInvCheckPeriod     = "inv-check-period"
 
-	FlagPruning                      = "pruning"
-	FlagPruningKeepRecent            = "pruning-keep-recent"
-	FlagPruningKeepEvery             = "pruning-keep-every"
-	FlagPruningInterval              = "pruning-interval"
+	// Legacy pruning flags (kept for backward compatibility)
+	FlagPruning           = "pruning"
+	FlagPruningKeepRecent = "pruning-keep-recent"
+	FlagPruningKeepEvery  = "pruning-keep-every"
+	FlagPruningInterval   = "pruning-interval"
+
+	// New pruning config keys under [iavl] section (v6.3.0+)
+	// TODO: Remove legacy fallback once all nodes have migrated to v6.3.0+
+	FlagIAVLPruning           = "iavl.pruning"
+	FlagIAVLPruningKeepRecent = "iavl.pruning-keep-recent"
+	FlagIAVLPruningKeepEvery  = "iavl.pruning-keep-every"
+	FlagIAVLPruningInterval   = "iavl.pruning-interval"
+
 	FlagIndexEvents                  = "index-events"
 	FlagMinRetainBlocks              = "min-retain-blocks"
 	FlagIAVLCacheSize                = "iavl-cache-size"