fix(database): repair legacy string tgId in inbound settings on upgrade

Old panel builds and external tools writing directly to the DB store
tgId as a JSON string; parsing such settings into the strict int64
Client model fails with "json: cannot unmarshal string into Go struct
field Client.tgId of type int64" and blocks every client operation on
that inbound. The one-shot InboundClientTgIdFix seeder already ran on
existing installs, so the repair is re-registered as
InboundClientTgIdFix2 to run once more on upgrade, and it now preserves
numeric string ids instead of zeroing them. The Client model itself
stays number-only.

internal/database/db.go

@@ -1057,7 +1057,7 @@ func runSeeders(isUsersEmpty bool) error {
 	}
 
 	if empty && isUsersEmpty {
-		seeders := []string{"UserPasswordHash", "ClientsTable", "InboundClientsArrayFix", "InboundClientTgIdFix", "InboundClientSubIdFix", "FreedomFinalRulesReverseFix", "ApiTokensHash", "LegacyProxySettingsCleanup", "WireguardPeersToClients", "MtprotoSecretsToClients", "NodeInboundsAdopted", "ResetIpLimitNoFail2ban"}
+		seeders := []string{"UserPasswordHash", "ClientsTable", "InboundClientsArrayFix", "InboundClientTgIdFix2", "InboundClientSubIdFix", "FreedomFinalRulesReverseFix", "ApiTokensHash", "LegacyProxySettingsCleanup", "WireguardPeersToClients", "MtprotoSecretsToClients", "NodeInboundsAdopted", "ResetIpLimitNoFail2ban"}
 		for _, name := range seeders {
 			if err := db.Create(&model.HistoryOfSeeders{SeederName: name}).Error; err != nil {
 				return err
@@ -1126,7 +1126,7 @@ func runSeeders(isUsersEmpty bool) error {
 		}
 	}
 
-	if !slices.Contains(seedersHistory, "InboundClientTgIdFix") {
+	if !slices.Contains(seedersHistory, "InboundClientTgIdFix2") {
 		if err := normalizeInboundClientTgId(); err != nil {
 			return err
 		}
@@ -1384,6 +1384,11 @@ func normalizeInboundClientTgId() error {
 					continue
 				}
 				obj["tgId"] = int64(0)
+				if s, isStr := tgRaw.(string); isStr {
+					if id, err := strconv.ParseInt(strings.ReplaceAll(strings.TrimSpace(s), " ", ""), 10, 64); err == nil {
+						obj["tgId"] = id
+					}
+				}
 				clients[i] = obj
 				mutated = true
 			}
@@ -1401,7 +1406,7 @@ func normalizeInboundClientTgId() error {
 				return err
 			}
 		}
-		return tx.Create(&model.HistoryOfSeeders{SeederName: "InboundClientTgIdFix"}).Error
+		return tx.Create(&model.HistoryOfSeeders{SeederName: "InboundClientTgIdFix2"}).Error
 	})
 }