diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..c79b67c
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,47 @@
+name: CI
+
+on:
+  push:
+    branches: [ "main", "phase-*" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  test:
+    name: Rust & Workspace Tests (${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Rust stable
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Setup Rust cache
+        uses: Swatinem/rust-cache@v2
+
+      - name: Install Linux dependencies
+        if: runner.os == 'Linux'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libwebkit2gtk-4.1-dev libappindicator3-dev librsvg2-dev patchelf libssl-dev
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Install GUI frontend dependencies
+        working-directory: gui
+        run: npm ci
+
+      - name: Build GUI frontend
+        working-directory: gui
+        run: npm run build
+
+      - name: Run Workspace Tests
+        run: cargo test --workspace --verbose
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 0000000..56157b1
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,168 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+jobs:
+  build-cli:
+    name: Build CLI (${{ matrix.target }})
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: macos-latest
+            target: aarch64-apple-darwin
+            binary_name: nut
+            artifact_name: nut-aarch64-apple-darwin.tar.gz
+          - os: macos-latest
+            target: x86_64-apple-darwin
+            binary_name: nut
+            artifact_name: nut-x86_64-apple-darwin.tar.gz
+          - os: ubuntu-latest
+            target: x86_64-unknown-linux-musl
+            binary_name: nut
+            artifact_name: nut-x86_64-unknown-linux-musl.tar.gz
+            use_cross: true
+          - os: ubuntu-latest
+            target: aarch64-unknown-linux-musl
+            binary_name: nut
+            artifact_name: nut-aarch64-unknown-linux-musl.tar.gz
+            use_cross: true
+          - os: windows-latest
+            target: x86_64-pc-windows-msvc
+            binary_name: nut.exe
+            artifact_name: nut-x86_64-pc-windows-msvc.zip
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Rust stable
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: ${{ matrix.target }}
+
+      - name: Setup Rust cache
+        uses: Swatinem/rust-cache@v2
+
+      - name: Install cross
+        if: matrix.use_cross
+        run: cargo install cross --git https://github.com/cross-rs/cross
+
+      - name: Build static CLI binary (with cross)
+        if: matrix.use_cross
+        run: cross build --release --target ${{ matrix.target }} -p nut
+
+      - name: Build CLI binary (standard)
+        if: "!matrix.use_cross"
+        run: cargo build --release --target ${{ matrix.target }} -p nut
+
+      - name: Package Unix binary
+        if: runner.os != 'Windows'
+        run: |
+          mkdir -p staging
+          cp target/${{ matrix.target }}/release/${{ matrix.binary_name }} staging/
+          cp README.md LICENSE staging/
+          tar -czf ${{ matrix.artifact_name }} -C staging .
+
+      - name: Package Windows binary
+        if: runner.os == 'Windows'
+        shell: pwsh
+        run: |
+          New-Item -ItemType Directory -Force -Path staging
+          Copy-Item target/${{ matrix.target }}/release/${{ matrix.binary_name }} staging/
+          Copy-Item README.md, LICENSE staging/
+          Compress-Archive -Path staging/* -DestinationPath ${{ matrix.artifact_name }}
+
+      - name: Upload CLI Artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.artifact_name }}
+          path: ${{ matrix.artifact_name }}
+
+  build-gui:
+    name: Build GUI (${{ matrix.platform }})
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - platform: macOS
+            os: macos-latest
+          - platform: Linux
+            os: ubuntu-latest
+          - platform: Windows
+            os: windows-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Install Rust stable
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Setup Rust cache
+        uses: Swatinem/rust-cache@v2
+
+      - name: Install Linux dependencies
+        if: runner.os == 'Linux'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libwebkit2gtk-4.1-dev libappindicator3-dev librsvg2-dev patchelf libssl-dev rpm
+
+      - name: Install frontend dependencies
+        working-directory: gui
+        run: npm ci
+
+      - name: Build Tauri GUI
+        uses: tauri-apps/tauri-action@v0
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          projectPath: "./gui"
+          tagName: ${{ github.ref_name }}
+          releaseName: "Nextcloud Upload Tool ${{ github.ref_name }}"
+          releaseBody: "See release notes for changes."
+          releaseDraft: true
+          prerelease: false
+
+  publish-release:
+    name: Publish Release & Checksums
+    needs: [build-cli, build-gui]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Download all CLI artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: artifacts
+
+      - name: Generate Checksums
+        run: |
+          cd artifacts
+          find . -type f -name "*.tar.gz" -o -name "*.zip" -exec sha256sum {} + > SHA256SUMS
+          cat SHA256SUMS
+
+      - name: Upload Checksums to GitHub Release
+        if: startsWith(github.ref, 'refs/tags/v')
+        uses: softprops/action-gh-release@v2
+        with:
+          files: |
+            artifacts/**/*
+            artifacts/SHA256SUMS
+          draft: false
+          prerelease: false
diff --git a/.gitignore b/.gitignore
index a63b308..8f9f561 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@
 /target/
 **/target/
 **/*.rs.bk
+dist-packages/
 
 # Cargo local configs
 .cargo/config.toml.local
diff --git a/Tasks.md b/Tasks.md
index 9d5134c..f704f12 100644
--- a/Tasks.md
+++ b/Tasks.md
@@ -70,7 +70,6 @@ This document defines the complete project roadmap and task tracking system for
 
 | ID | Title | Status | Type |
 |---|---|---|---|
-| [NUT-018](#nut-018) | Implement Packaging for macOS, Windows, Linux | Triage | Chore |
 | [NUT-019](#nut-019) | Implement Homebrew/Winget/Chocolatey Manifests | Triage | Chore |
 | [NUT-020](#nut-020) | Write Documentation + Examples | Triage | Chore |
 | [NUT-022](#nut-022) | Implement CLI Shell Completions Generation | Triage | Feature |
@@ -93,6 +92,7 @@ This document defines the complete project roadmap and task tracking system for
 | [NUT-015](#nut-015) | Implement GUI Upload Progress Bars | Fixed | Feature |
 | [NUT-016](#nut-016) | Implement Shared Auth Token Reuse | Fixed | Integration |
 | [NUT-017](#nut-017) | Implement Multi-Account Switching (GUI + CLI) | Fixed | Integration |
+| [NUT-018](#nut-018) | Implement Packaging for macOS, Windows, Linux | Fixed | Chore |
 | [NUT-021](#nut-021) | Support Headless & SSH Remote Authentication Modes | Fixed | Feature |
 
 ---
@@ -442,20 +442,20 @@ Add multi-account switching to both CLI and GUI.
 - NUT-014
 
 
-<a id="nut-018" class="task" data-status="triage" data-task-type="chore"></a>
+<a id="nut-018" class="task" data-status="done" data-task-type="chore"></a>
 ### Implement Packaging for macOS, Windows, Linux  
 **ID:** NUT-018  
-**Status:** Triage  
+**Status:** Fixed  
 **Type:** Chore  
 
 **Description:**  
-Package the CLI and GUI for distribution.
+Package the CLI and GUI for distribution across macOS, Windows, and Linux.
 
 **Requirements:**  
-- [ ] macOS `.app` + `.dmg`  
-- [ ] Windows `.exe` + installer  
-- [ ] Linux `.deb` + `.rpm`  
-- [ ] Static CLI binaries  
+- [x] macOS `.app` + `.dmg`  
+- [x] Windows `.exe` + installer  
+- [x] Linux `.deb` + `.rpm`  
+- [x] Static CLI binaries  
 
 **Dependencies:**  
 - NUT-008  
diff --git a/gui/src-tauri/tauri.conf.json b/gui/src-tauri/tauri.conf.json
index da4fdd7..a51e26f 100644
--- a/gui/src-tauri/tauri.conf.json
+++ b/gui/src-tauri/tauri.conf.json
@@ -31,6 +31,38 @@
       "icons/128x128@2x.png",
       "icons/icon.icns",
       "icons/icon.ico"
-    ]
+    ],
+    "category": "Utility",
+    "shortDescription": "Fast, seamless Nextcloud file uploader and share link generator",
+    "longDescription": "Upload files to Nextcloud with ease, automatically generate share links, and manage multiple accounts with secure OS keychain storage.",
+    "linux": {
+      "deb": {
+        "depends": [
+          "libwebkit2gtk-4.1-0 | libwebkit2gtk-4.0-37",
+          "libayatana-appindicator3-1 | libappindicator3-1",
+          "librsvg2-common"
+        ]
+      },
+      "rpm": {
+        "depends": [
+          "webkit2gtk4.1",
+          "libappindicator-gtk3"
+        ]
+      }
+    },
+    "macOS": {
+      "minimumSystemVersion": "10.15",
+      "dmg": {
+        "windowSize": {
+          "width": 600,
+          "height": 400
+        }
+      }
+    },
+    "windows": {
+      "nsis": {
+        "installMode": "currentUser"
+      }
+    }
   }
 }
diff --git a/scripts/build-cli.sh b/scripts/build-cli.sh
new file mode 100755
index 0000000..b39f14d
--- /dev/null
+++ b/scripts/build-cli.sh
@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Nextcloud Upload Tool — CLI Packaging Helper Script
+# Builds release binaries and packages archives for distribution
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ROOT_DIR="$(cd "${SCRIPT_DIR}/.." && pwd)"
+DIST_DIR="${ROOT_DIR}/dist-packages"
+
+echo "==> Building static/optimized release CLI binary..."
+cd "${ROOT_DIR}"
+cargo build --release -p nut
+
+TARGET_BIN="${ROOT_DIR}/target/release/nut"
+VERSION=$(cargo pkgid -p nut | cut -d# -f2 | cut -d: -f2 || echo "0.1.0")
+ARCH=$(uname -m)
+OS=$(uname -s | tr '[:upper:]' '[:lower:]')
+
+mkdir -p "${DIST_DIR}"
+ARCHIVE_NAME="nut-v${VERSION}-${OS}-${ARCH}.tar.gz"
+
+echo "==> Creating distribution archive: ${ARCHIVE_NAME}"
+TMP_STAGE=$(mktemp -d)
+cp "${TARGET_BIN}" "${TMP_STAGE}/nut"
+cp "${ROOT_DIR}/README.md" "${TMP_STAGE}/"
+cp "${ROOT_DIR}/LICENSE" "${TMP_STAGE}/"
+
+tar -czf "${DIST_DIR}/${ARCHIVE_NAME}" -C "${TMP_STAGE}" .
+rm -rf "${TMP_STAGE}"
+
+echo "✓ CLI package created successfully at: ${DIST_DIR}/${ARCHIVE_NAME}"
diff --git a/scripts/build-gui.sh b/scripts/build-gui.sh
new file mode 100755
index 0000000..3a4dec6
--- /dev/null
+++ b/scripts/build-gui.sh
@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Nextcloud Upload Tool — Tauri GUI Packaging Helper Script
+# Builds production frontend and packages native desktop installer/bundles
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ROOT_DIR="$(cd "${SCRIPT_DIR}/.." && pwd)"
+GUI_DIR="${ROOT_DIR}/gui"
+
+echo "==> Building frontend assets..."
+cd "${GUI_DIR}"
+npm run build
+
+echo "==> Packaging native desktop bundle with Tauri..."
+npm run tauri build
+
+echo "✓ Native desktop bundle packaged in: ${GUI_DIR}/src-tauri/target/release/bundle/"