diff --git a/manifests/9/990aa/Kivixa/0.4.0+4000/990aa.Kivixa.installer.yaml b/manifests/9/990aa/Kivixa/0.4.0+4000/990aa.Kivixa.installer.yaml
new file mode 100644
index 0000000000000..0f32eeb22f8e4
--- /dev/null
+++ b/manifests/9/990aa/Kivixa/0.4.0+4000/990aa.Kivixa.installer.yaml
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+# Created with WinGet Releaser using komac v2.16.0
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.installer.1.12.0.schema.json
+
+PackageIdentifier: 990aa.Kivixa
+PackageVersion: 0.4.0+4000
+InstallerLocale: en-US
+InstallerType: inno
+Scope: machine
+InstallerSwitches:
+  Silent: /VERYSILENT /SUPPRESSMSGBOXES /NORESTART /SP-
+  SilentWithProgress: /SILENT /SUPPRESSMSGBOXES /NORESTART /SP-
+Dependencies:
+  PackageDependencies:
+  - PackageIdentifier: Microsoft.VCRedist.2015+.x64
+ProductCode: '{D37F2C99-F354-4632-A626-68E2F29D6E5A}_is1'
+ReleaseDate: 2026-04-04
+AppsAndFeaturesEntries:
+- DisplayVersion: 0.4.0
+  ProductCode: '{D37F2C99-F354-4632-A626-68E2F29D6E5A}_is1'
+ElevationRequirement: elevatesSelf
+InstallationMetadata:
+  DefaultInstallLocation: '%ProgramFiles%\Kivixa'
+Installers:
+- Architecture: x64
+  InstallerUrl: https://github.com/990aa/kivixa/releases/download/v0.4.0+4000/Kivixa-Setup-0.4.0.exe
+  InstallerSha256: 19841730EE9491BF971ABA8C6CF197FD0B5ABD8CE07C3B84F10859F32603D81F
+ManifestType: installer
+ManifestVersion: 1.12.0
diff --git a/manifests/9/990aa/Kivixa/0.4.0+4000/990aa.Kivixa.locale.en-US.yaml b/manifests/9/990aa/Kivixa/0.4.0+4000/990aa.Kivixa.locale.en-US.yaml
new file mode 100644
index 0000000000000..2076033cac031
--- /dev/null
+++ b/manifests/9/990aa/Kivixa/0.4.0+4000/990aa.Kivixa.locale.en-US.yaml
@@ -0,0 +1,60 @@
+# Created with WinGet Releaser using komac v2.16.0
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.defaultLocale.1.12.0.schema.json
+
+PackageIdentifier: 990aa.Kivixa
+PackageVersion: 0.4.0+4000
+PackageLocale: en-US
+Publisher: 990aa
+PublisherUrl: https://github.com/990aa
+PublisherSupportUrl: https://github.com/990aa/kivixa/issues
+PackageName: Kivixa
+PackageUrl: https://github.com/990aa/kivixa
+License: MIT
+LicenseUrl: https://github.com/990aa/kivixa/blob/HEAD/LICENSE.md
+ShortDescription: A privacy-first cross-platform productivity workspace for notes, sketching, planning, and local AI assistance
+Tags:
+- browser
+- calendar
+- canvas
+- clock
+- flutter
+- local-ai
+- math
+- mcp
+- notes-app
+- productivity-tool
+- rust
+- version-control
+ReleaseNotes: |-
+  Kivixa v0.4.0
+  Changed
+  - AI and MCP chat composers now support prompt history recall with keyboard arrows:
+    - Arrow Up walks backward through previously sent user prompts.
+    - Arrow Down walks forward through prompt history and restores draft text at the end.
+    - Applies to both main chat pages and floating assistant chat/MCP windows.
+  - AI and MCP chat composers now include a left-side + attachment action:
+    - Supports multi-file selection with all file types.
+    - Shows attachment preview chips above the composer before sending.
+    - Each attachment chip now has a remove (x) action.
+  - Attachment context is now injected into model-bound user messages across AI and MCP controllers, including extracted text (when available) and binary metadata previews.
+  - Chat export payloads now include attachment metadata for user prompts.
+  Added
+  - Added shared attachment processing service (ChatAttachmentService) to normalize file metadata and build model-ready attachment context.
+  - Added detailed regression coverage for:
+    - AI composer attachment add/remove/send behavior and prompt-history keyboard navigation.
+    - MCP composer attachment add/remove/send behavior and prompt-history keyboard navigation.
+    - Floating assistant integration path (AI and MCP) for attachment-capable composer availability.
+    - Attachment serialization/unit behavior and model payload injection.
+  Downloads
+  Windows:
+  - Kivixa-Setup-0.4.0.exe - Windows Installer
+  - .msix package included (if build successful) - Modern Windows Package
+  Android:
+  - Kivixa-Android-0.4.0-arm64.apk - ARM64 (most modern devices)
+  - Kivixa-Android-0.4.0-armv7.apk - ARMv7 (older devices)
+  - Kivixa-Android-0.4.0-x86_64.apk - x86_64 (emulators)
+  Alternative Downloads
+  - F-Droid: Add our repo at https://990aa.github.io/kivixa/repo
+ReleaseNotesUrl: https://github.com/990aa/kivixa/releases/tag/v0.4.0+4000
+ManifestType: defaultLocale
+ManifestVersion: 1.12.0
diff --git a/manifests/9/990aa/Kivixa/0.4.0+4000/990aa.Kivixa.yaml b/manifests/9/990aa/Kivixa/0.4.0+4000/990aa.Kivixa.yaml
new file mode 100644
index 0000000000000..62c9e8c931056
--- /dev/null
+++ b/manifests/9/990aa/Kivixa/0.4.0+4000/990aa.Kivixa.yaml
@@ -0,0 +1,8 @@
+# Created with WinGet Releaser using komac v2.16.0
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.version.1.12.0.schema.json
+
+PackageIdentifier: 990aa.Kivixa
+PackageVersion: 0.4.0+4000
+DefaultLocale: en-US
+ManifestType: version
+ManifestVersion: 1.12.0