diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 13cf6c0..2e64b1a 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,104 +1,29 @@
-# v0.4.0 (2026-04-21)
+## v0.4.1 (2026-04-22)
 
-This release introduces a full **Android TV app** that embeds the Python server via Chaquopy, with boot-time autostart, root-based screen capture, and a watchdog. New device support includes **BLE LED controllers** (SP110E, Triones, Zengge, Govee), **Android USB-serial** Adalight/AmbiLED controllers, and a **Group** device type for combining multiple devices. Metrics now include battery and thermal-zone readings with a dashboard temperature chart. Devices get a new per-provider typed configuration model, and the project has been renamed from `led-grab` to **LedGrab** with the Home Assistant integration split into a separate repository.
-
-## Features
-
-### Android TV App
-
-- Android TV app embedding Python server via Chaquopy ([8574424](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/8574424))
-- Boot-time autostart, capture watchdog, versionCode derived from git ([b3775b2](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/b3775b2))
-- Root-based screen capture bypassing MediaProjection ([5fcb9f8](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/5fcb9f8))
-
-### Devices
-
-- BLE LED controller support — SP110E, Triones, Zengge, Govee ([2b5dac2](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/2b5dac2))
-- Android USB-serial support for Adalight/AmbiLED controllers ([7fcb8dd](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/7fcb8dd))
-- **Group** device type for combining multiple devices ([4940007](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/4940007))
-- Per-provider typed device configs (phases 1–4) ([d3a6416](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/d3a6416))
-
-### Metrics
-
-- Battery + thermal-zone readings with dashboard temperature chart ([ecae05d](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/ecae05d))
-
-### Sources
-
-- Support nesting for composite color strip sources ([cc9900d](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/cc9900d))
-
-### Project
-
-- Rename project to **LedGrab**; split Home Assistant integration into a separate repository ([02cd9d5](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/02cd9d5))
-
-## Bug Fixes
-
-- SP110E vendor handshake + Windows/bleak robustness ([45f93fd](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/45f93fd))
-- Coerce `BindableFloat` fps to int when snapshotting scenes ([580bd69](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/580bd69))
-- Add `autocomplete` attributes to credential inputs ([488df98](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/488df98))
-- Register pattern-templates API route; responsive toolbar overflow menu ([38f73ba](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/38f73ba))
-- HA Light Target cards no longer flicker on every poll cycle ([83ceaed](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/83ceaed))
-- `EntitySelect` now shows the selected value in weather/processed CSS editors ([d3cd48e](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/d3cd48e))
-- Bundle `bettercam`/`dxcam`/`windows-capture` in the Windows installer ([92585e7](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/92585e7))
-- Launcher: set `TCL_LIBRARY`/`TK_LIBRARY` for embedded Python ([0e09eaf](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/0e09eaf))
-- Comprehensive security, stability, and code quality audit ([123da1b](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/123da1b))
+### Bug Fixes
+- Installer now bundles `cryptography` and `just-playback`, sets the `TCL` environment for Tk, and removes the stale `debug.bat` shim ([4f7794c](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/4f7794c))
 
 ---
 
-## Development / Internal
+### Development / Internal
 
-### CI/Build
+#### CI/Build
+- Scope the Android keystore env correctly and fail loudly when a release build is attempted without a signing key ([35b75a2](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/35b75a2))
 
-- Android multi-ABI APK pipeline + `pydantic-core` wheel rebuild ([151cea3](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/151cea3))
-- Add Android APK row to release downloads table ([2477e00](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/2477e00))
-- Decouple Android release attach; add `workflow_dispatch` to `release.yml` ([524e422](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/524e422))
-- Android: fix wheels find-links URL on Linux CI ([5d6310f](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/5d6310f))
-- Android: fix missing python symlink parent; restrict to release tags ([7ef17c1](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/7ef17c1))
-
-### Refactoring
-
-- Route ESP-NOW client through `SerialTransport` ([928d626](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/928d626))
-- `MetricsProvider` abstraction with Android `/proc` backend ([546b24d](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/546b24d))
-- Move build scripts to `build/` directory ([a0b65e3](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/a0b65e3))
-
-### Documentation
-
-- Update TODO and frontend context docs ([e678e55](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/e678e55))
+#### Documentation
+- Drop the stale WLED-rename task and document the Android signing secrets ([a0d63a3](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/a0d63a3))
+- Remove WLED-specific language from the auto-generated release notes template ([4ed099d](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/4ed099d))
 
 ---
 
-<!-- markdownlint-disable MD033 -->
 <details>
 <summary>All Commits</summary>
 
 | Hash | Message | Author |
-| ---- | ------- | ------ |
-| [524e422](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/524e422) | ci: decouple android release attach, add workflow_dispatch to release.yml | alexei.dolgolyov |
-| [5d6310f](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/5d6310f) | fix(android): make wheels find-links URL work on Linux CI | alexei.dolgolyov |
-| [7ef17c1](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/7ef17c1) | ci(android): fix missing python symlink parent, restrict to release tags | alexei.dolgolyov |
-| [b3775b2](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/b3775b2) | feat(android): boot-time autostart, capture watchdog, versionCode from git | alexei.dolgolyov |
-| [45f93fd](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/45f93fd) | fix(devices): SP110E vendor handshake + Windows/bleak robustness | alexei.dolgolyov |
-| [2b5dac2](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/2b5dac2) | feat(devices): BLE LED controller support (SP110E/Triones/Zengge/Govee) | alexei.dolgolyov |
-| [d3a6416](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/d3a6416) | refactor(devices): per-provider typed configs (phases 1-4) | alexei.dolgolyov |
-| [123da1b](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/123da1b) | fix: comprehensive security, stability, and code quality audit | alexei.dolgolyov |
-| [5fcb9f8](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/5fcb9f8) | feat(android): root-based screen capture bypassing MediaProjection | alexei.dolgolyov |
-| [928d626](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/928d626) | refactor(devices): route ESP-NOW client through SerialTransport | alexei.dolgolyov |
-| [580bd69](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/580bd69) | fix(scenes): coerce BindableFloat fps to int when snapshotting | alexei.dolgolyov |
-| [7fcb8dd](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/7fcb8dd) | feat(devices): Android USB-serial support for Adalight/AmbiLED controllers | alexei.dolgolyov |
-| [ecae05d](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/ecae05d) | feat(metrics): battery + thermal-zone readings with dashboard temp chart | alexei.dolgolyov |
-| [546b24d](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/546b24d) | refactor(metrics): MetricsProvider abstraction with Android /proc backend | alexei.dolgolyov |
-| [488df98](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/488df98) | fix(frontend): add autocomplete attrs to credential inputs | alexei.dolgolyov |
-| [2477e00](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/2477e00) | ci: add Android APK row to release downloads table | alexei.dolgolyov |
-| [151cea3](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/151cea3) | ci: Android multi-ABI APK pipeline + pydantic-core wheel rebuild | alexei.dolgolyov |
-| [8574424](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/8574424) | feat: Android TV app embedding Python server via Chaquopy | alexei.dolgolyov |
-| [a0b65e3](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/a0b65e3) | refactor: move build scripts to build/ directory | alexei.dolgolyov |
-| [02cd9d5](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/02cd9d5) | refactor: rename project to LedGrab, split HA integration into separate repo | alexei.dolgolyov |
-| [38f73ba](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/38f73ba) | fix: register pattern-templates API route; add responsive toolbar overflow menu | alexei.dolgolyov |
-| [e678e55](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/e678e55) | docs: update TODO and frontend context docs | alexei.dolgolyov |
-| [83ceaed](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/83ceaed) | fix: HA Light Target cards flickering on every poll cycle | alexei.dolgolyov |
-| [d3cd48e](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/d3cd48e) | fix: EntitySelect not showing selected value in weather/processed CSS editors | alexei.dolgolyov |
-| [cc9900d](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/cc9900d) | feat: support nesting for composite color strip sources | alexei.dolgolyov |
-| [4940007](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/4940007) | feat: add Group device type for combining multiple devices | alexei.dolgolyov |
-| [92585e7](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/92585e7) | fix(build): bundle bettercam/dxcam/windows-capture in installer | alexei.dolgolyov |
-| [0e09eaf](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/0e09eaf) | fix(launcher): set TCL_LIBRARY/TK_LIBRARY for embedded Python | alexei.dolgolyov |
+|------|---------|--------|
+| [4f7794c](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/4f7794c) | fix(installer): bundle cryptography + just-playback, set TCL env, clean stale debug.bat | alexei.dolgolyov |
+| [a0d63a3](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/a0d63a3) | docs(release): drop stale WLED-rename task, document android signing secrets | alexei.dolgolyov |
+| [35b75a2](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/35b75a2) | ci(android): fix keystore env scoping, fail loudly on release without key | alexei.dolgolyov |
+| [4ed099d](https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab/commit/4ed099d) | docs(release): drop WLED-specific language from auto-generated release notes | alexei.dolgolyov |
 
 </details>
-<!-- markdownlint-enable MD033 -->
diff --git a/android/app/build.gradle.kts b/android/app/build.gradle.kts
index e5f5929..ce3d30f 100644
--- a/android/app/build.gradle.kts
+++ b/android/app/build.gradle.kts
@@ -40,7 +40,7 @@ android {
         // in CI).  See ledgrabVersionCode above.  Was stuck at 1 before —
         // sideload updates silently refused to install.
         versionCode = ledgrabVersionCode
-        versionName = "0.4.0"
+        versionName = "0.4.1"
 
         ndk {
             // All three ABIs: arm64-v8a (real TV hardware), x86_64 (modern
diff --git a/server/pyproject.toml b/server/pyproject.toml
index 351285b..b53720d 100644
--- a/server/pyproject.toml
+++ b/server/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "ledgrab"
-version = "0.4.0"
+version = "0.4.1"
 description = "Ambient lighting system that captures screen content and drives LED strips in real time"
 authors = [
     {name = "Alexei Dolgolyov", email = "dolgolyov.alexei@gmail.com"}