diff --git a/CHECKLIST.md b/CHECKLIST.md
index 273d8a2..85d8c18 100644
--- a/CHECKLIST.md
+++ b/CHECKLIST.md
@@ -5,7 +5,7 @@
 ## Работает сейчас
 
 - [x] Go server, SQLite/WAL, Docker/Compose и `/healthz`.
-- [x] Go agent 0.6.3, heartbeat, команды, backoff и OpenWrt init integration.
+- [x] Go agent 0.6.4, heartbeat, команды, backoff и OpenWrt init integration.
 - [x] APK/IPK и LuCI-пакет.
 - [x] Multi-user, роли admin/user, владение и передача роутеров.
 - [x] Профиль, e-mail, смена/сброс пароля и управление сессиями.
diff --git a/RELEASES.md b/RELEASES.md
index 7b63699..3c49e1b 100644
--- a/RELEASES.md
+++ b/RELEASES.md
@@ -29,7 +29,7 @@ production upgrade even when the release is marked compatible.
 
 ## Agent releases
 
-Tags use `agent-vMAJOR.MINOR.PATCH`, for example `agent-v0.6.3`.
+Tags use `agent-vMAJOR.MINOR.PATCH`, for example `agent-v0.6.4`.
 
 An agent release contains the Go runtime, LuCI application and OpenWrt IPK/APK packages.
 Before tagging, the tag version must match `agentVersion` in the Go source and
@@ -58,8 +58,8 @@ transition period; it should not silently reuse `v1`.
 git tag -a server-v0.8.0 -m "OpenWrt RMM Server 0.8.0"
 git push origin server-v0.8.0
 
-git tag -a agent-v0.6.3 -m "OpenWrt RMM Agent 0.6.3"
-git push origin agent-v0.6.3
+git tag -a agent-v0.6.4 -m "OpenWrt RMM Agent 0.6.4"
+git push origin agent-v0.6.4
 ```
 
 Pushing a server tag publishes the container image and creates a GitHub Release. Pushing
diff --git a/ROADMAP.md b/ROADMAP.md
index c86c9dc..b8023e9 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -1,6 +1,6 @@
 # OpenWrt RMM — актуальный roadmap
 
-Актуализировано: 2026-07-23. Текущая стабильная линия агента: `0.6.3`.
+Актуализировано: 2026-07-23. Текущая стабильная линия агента: `0.6.4`.
 
 ## Цель продукта
 
diff --git a/agent/README.md b/agent/README.md
index 131f097..428690b 100644
--- a/agent/README.md
+++ b/agent/README.md
@@ -1,6 +1,6 @@
 # OpenWrt RMM Agent
 
-Current stable Go agent: `0.6.3`. It reports runtime health, pending command results,
+Current stable Go agent: `0.6.4`. It reports runtime health, pending command results,
 and the last heartbeat transport error after connectivity is restored.
 
 Production Go agent for OpenWrt, with the shell implementation retained as a fallback runtime.
diff --git a/agent/go/cmd/rmm-agent/main.go b/agent/go/cmd/rmm-agent/main.go
index a12c070..de41c5e 100644
--- a/agent/go/cmd/rmm-agent/main.go
+++ b/agent/go/cmd/rmm-agent/main.go
@@ -23,7 +23,7 @@ import (
 	"time"
 )
 
-const agentVersion = "0.6.3"
+const agentVersion = "0.6.4"
 
 type agentRuntimeHealth struct {
 	StartedAt            time.Time
diff --git a/agent/go/cmd/rmm-agent/main_test.go b/agent/go/cmd/rmm-agent/main_test.go
index 2ddaa1c..d9e0f98 100644
--- a/agent/go/cmd/rmm-agent/main_test.go
+++ b/agent/go/cmd/rmm-agent/main_test.go
@@ -9,7 +9,7 @@ import (
 )
 
 func TestAgentVersionIsStable(t *testing.T) {
-	if agentVersion != "0.6.3" {
+	if agentVersion != "0.6.4" {
 		t.Fatalf("unexpected agent version %q", agentVersion)
 	}
 }
diff --git a/agent/package/luci-app-rmm-agent/README.md b/agent/package/luci-app-rmm-agent/README.md
index fe7351e..6e9d2b9 100644
--- a/agent/package/luci-app-rmm-agent/README.md
+++ b/agent/package/luci-app-rmm-agent/README.md
@@ -67,7 +67,7 @@ application to the router. Do not copy or install the shell runtime at the same
 cd dist/rmm-openwrt-25.12.4-ramips-mt7621
 sha256sum -c SHA256SUMS
 scp \
-  rmm-agent-go-production-0.6.3-r1.apk \
+  rmm-agent-go-production-0.6.4-r1.apk \
   luci-app-rmm-agent-0.2.1-r2.apk \
   root@ROUTER_IP:/tmp/
 ```
@@ -76,7 +76,7 @@ Then install the locally built, unsigned packages over SSH:
 
 ```sh
 apk add --allow-untrusted \
-  /tmp/rmm-agent-go-production-0.6.3-r1.apk \
+  /tmp/rmm-agent-go-production-0.6.4-r1.apk \
   /tmp/luci-app-rmm-agent-0.2.1-r2.apk
 /etc/init.d/rpcd restart
 /etc/init.d/uhttpd restart
diff --git a/agent/package/rmm-agent-go-production/Makefile b/agent/package/rmm-agent-go-production/Makefile
index 8bfc784..18bc769 100644
--- a/agent/package/rmm-agent-go-production/Makefile
+++ b/agent/package/rmm-agent-go-production/Makefile
@@ -2,7 +2,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=rmm-agent-go-production
-PKG_VERSION:=0.6.3
+PKG_VERSION:=0.6.4
 PKG_RELEASE:=1
 
 PKG_MAINTAINER:=RMM OpenWrt
diff --git a/agent/package/rmm-agent-go-production/README.md b/agent/package/rmm-agent-go-production/README.md
index da81a85..1d6e86a 100644
--- a/agent/package/rmm-agent-go-production/README.md
+++ b/agent/package/rmm-agent-go-production/README.md
@@ -34,5 +34,5 @@ opkg install /tmp/rmm-agent-go-production_*.ipk
 
 This package is intended for the final shell-to-Go migration when the router should keep the same RMM object identity.
 
-Version `0.6.3` uses the cloud tunnel exclusively and no longer discovers or publishes the
+Version `0.6.4` uses the cloud tunnel exclusively and no longer discovers or publishes the
 router's public WAN addresses.
diff --git a/agent/package/rmm-agent-go/Makefile b/agent/package/rmm-agent-go/Makefile
index e7de82f..3ee2d84 100644
--- a/agent/package/rmm-agent-go/Makefile
+++ b/agent/package/rmm-agent-go/Makefile
@@ -2,7 +2,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=rmm-agent-go
-PKG_VERSION:=0.6.3
+PKG_VERSION:=0.6.4
 PKG_RELEASE:=1
 
 PKG_MAINTAINER:=RMM OpenWrt
diff --git a/deploy/luci-builder/Dockerfile b/deploy/luci-builder/Dockerfile
index da55fd4..a31a3f7 100644
--- a/deploy/luci-builder/Dockerfile
+++ b/deploy/luci-builder/Dockerfile
@@ -166,26 +166,29 @@ RUN --mount=type=secret,id=openwrt_usign_secret_b64,uid=1000,required=false \
     --mount=type=secret,id=openwrt_apk_secret_b64,uid=1000,required=false \
     set -eu; \
     export PATH="/home/builder/sdk/staging_dir/host/bin:${PATH}"; \
-    test -n "${REPOSITORY_INDEX_REVISION}" \
-    && mkdir -p /home/builder/artifacts \
-    && find bin -type f \
+    test -n "${REPOSITORY_INDEX_REVISION}"; \
+    mkdir -p /home/builder/artifacts; \
+    find bin -type f \
         \( -name 'luci-app-rmm-agent*.apk' \
            -o -name 'luci-app-rmm-agent*.ipk' \
            -o -name 'rmm-agent*.apk' \
            -o -name 'rmm-agent*.ipk' \) \
-        -exec cp '{}' /home/builder/artifacts/ \; \
-    && test -n "$(find /home/builder/artifacts -maxdepth 1 -type f \( -name '*.apk' -o -name '*.ipk' \) -print -quit)" \
-    && cd /home/builder/artifacts \
-    && if find . -maxdepth 1 -type f -name '*.ipk' -print -quit | grep -q .; then \
-        /home/builder/sdk/scripts/ipkg-make-index.sh . > Packages; \
+        -exec cp '{}' /home/builder/artifacts/ \;; \
+    test -n "$(find /home/builder/artifacts -maxdepth 1 -type f \( -name '*.apk' -o -name '*.ipk' \) -print -quit)"; \
+    cd /home/builder/artifacts; \
+    if find . -maxdepth 1 -type f -name '*.ipk' -print -quit | grep -q .; then \
+        MKHASH=/home/builder/sdk/staging_dir/host/bin/mkhash \
+          /home/builder/sdk/scripts/ipkg-make-index.sh . > Packages; \
         gzip -9nc Packages > Packages.gz; \
         test -s Packages; \
         test -s Packages.gz; \
         if [ -s /run/secrets/openwrt_usign_secret_b64 ]; then \
           base64 -d /run/secrets/openwrt_usign_secret_b64 > /tmp/usign.sec; \
           chmod 600 /tmp/usign.sec; \
-          /home/builder/sdk/staging_dir/host/bin/usign -S -m Packages -s /tmp/usign.sec; \
+          /home/builder/sdk/staging_dir/host/bin/usign -S -m Packages \
+            -s /tmp/usign.sec -x Packages.sig; \
           /home/builder/sdk/staging_dir/host/bin/usign -V -m Packages \
+            -x Packages.sig \
             -p /home/builder/release-keys/usign/7fb0908fb6bc82c8; \
           test -s Packages.sig; \
           cp /home/builder/release-keys/usign/7fb0908fb6bc82c8 ./; \
@@ -221,14 +224,15 @@ RUN --mount=type=secret,id=openwrt_usign_secret_b64,uid=1000,required=false \
             --output packages.adb \
             ./*.apk; \
         fi; \
-      fi \
-    && find . -maxdepth 1 -type f \( \
+      fi; \
+    find . -maxdepth 1 -type f \( \
         -name '*.apk' -o -name '*.ipk' \
         -o -name 'Packages' -o -name 'Packages.gz' -o -name 'Packages.sig' \
         -o -name 'packages.adb' -o -name 'rmm-openwrt.pem' \
         -o -name '????????????????' \) -print \
         | LC_ALL=C sort \
-        | xargs sha256sum > SHA256SUMS
+        | xargs sha256sum > SHA256SUMS; \
+    test -s SHA256SUMS
 
 FROM scratch AS artifacts
 
diff --git a/web/app.js b/web/app.js
index f47d67b..ef8e245 100644
--- a/web/app.js
+++ b/web/app.js
@@ -38,7 +38,7 @@ const state = {
 let eventSource = null;
 let liveRefreshTimer = null;
 
-const EXPECTED_AGENT_VERSION = "0.6.3";
+const EXPECTED_AGENT_VERSION = "0.6.4";
 
 const els = {
   loginView: document.querySelector("#loginView"),