feat: homebrew tap + --version flag

- Add CloudNativeBergen/homebrew-tap auto-update job to release workflow
  Calculates SHA256 from build artifacts and commits updated formula
- Add --version flag to CLI (required by brew formula test block)
- Update README with brew install instructions and sponsor filter docs

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: Starefossen

.github/workflows/release.yml

@@ -101,6 +101,8 @@ jobs:
     runs-on: ubuntu-latest
     permissions:
       contents: write
+    outputs:
+      tag: ${{ steps.version.outputs.tag }}
     steps:
       - uses: actions/download-artifact@v8
         with:
@@ -133,3 +135,85 @@ jobs:
           files: |
             artifacts/cnctl-*
             artifacts/SHA256SUMS
+
+  update-tap:
+    name: Update Homebrew tap
+    needs: [release]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/download-artifact@v8
+        with:
+          path: artifacts
+          merge-multiple: true
+
+      - name: Parse checksums
+        id: sums
+        run: |
+          cd artifacts
+          echo "mac_arm=$(sha256sum cnctl-aarch64-apple-darwin.tar.gz | awk '{print $1}')" >> "$GITHUB_OUTPUT"
+          echo "mac_x86=$(sha256sum cnctl-x86_64-apple-darwin.tar.gz | awk '{print $1}')" >> "$GITHUB_OUTPUT"
+          echo "linux_arm=$(sha256sum cnctl-aarch64-unknown-linux-gnu.tar.gz | awk '{print $1}')" >> "$GITHUB_OUTPUT"
+          echo "linux_x86=$(sha256sum cnctl-x86_64-unknown-linux-gnu.tar.gz | awk '{print $1}')" >> "$GITHUB_OUTPUT"
+
+      - name: Checkout homebrew tap
+        uses: actions/checkout@v6
+        with:
+          repository: CloudNativeBergen/homebrew-tap
+          token: ${{ secrets.HOMEBREW_TAP_TOKEN }}
+          path: homebrew-tap
+
+      - name: Write formula
+        env:
+          VERSION: ${{ needs.release.outputs.tag }}
+          MAC_ARM_SHA: ${{ steps.sums.outputs.mac_arm }}
+          MAC_X86_SHA: ${{ steps.sums.outputs.mac_x86 }}
+          LINUX_ARM_SHA: ${{ steps.sums.outputs.linux_arm }}
+          LINUX_X86_SHA: ${{ steps.sums.outputs.linux_x86 }}
+        run: |
+          mkdir -p homebrew-tap/Formula
+          cat > homebrew-tap/Formula/cnctl.rb << FORMULA
+          class Cnctl < Formula
+            desc "Organizer CLI for Cloud Native Days Norway"
+            homepage "https://github.com/CloudNativeBergen/cnctl"
+            version "${VERSION}"
+            license "MIT"
+
+            on_macos do
+              if Hardware::CPU.arm?
+                url "https://github.com/CloudNativeBergen/cnctl/releases/download/${VERSION}/cnctl-aarch64-apple-darwin.tar.gz"
+                sha256 "${MAC_ARM_SHA}"
+              else
+                url "https://github.com/CloudNativeBergen/cnctl/releases/download/${VERSION}/cnctl-x86_64-apple-darwin.tar.gz"
+                sha256 "${MAC_X86_SHA}"
+              end
+            end
+
+            on_linux do
+              if Hardware::CPU.arm?
+                url "https://github.com/CloudNativeBergen/cnctl/releases/download/${VERSION}/cnctl-aarch64-unknown-linux-gnu.tar.gz"
+                sha256 "${LINUX_ARM_SHA}"
+              else
+                url "https://github.com/CloudNativeBergen/cnctl/releases/download/${VERSION}/cnctl-x86_64-unknown-linux-gnu.tar.gz"
+                sha256 "${LINUX_X86_SHA}"
+              end
+            end
+
+            def install
+              bin.install "cnctl"
+            end
+
+            test do
+              assert_match version.to_s, shell_output("#{bin}/cnctl --version")
+            end
+          end
+          FORMULA
+
+      - name: Commit and push
+        run: |
+          cd homebrew-tap
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add Formula/cnctl.rb
+          git diff --cached --quiet && echo "No changes" && exit 0
+          git commit -m "chore: update cnctl to ${{ needs.release.outputs.tag }}"
+          git push

README.md

@@ -17,6 +17,13 @@ The organizer CLI for [Cloud Native Days Norway](https://cloudnativedays.no). Re
 
 ## 📦 Installation
 
+### Homebrew (macOS and Linux)
+
+```sh
+brew tap CloudNativeBergen/tap
+brew install cnctl
+```
+
 ### Download a prebuilt binary
 
 Grab the latest build for your platform from [GitHub Releases](https://github.com/CloudNativeBergen/cnctl/releases/latest):
@@ -142,11 +149,11 @@ cnctl admin proposals list --sort speaker --asc
 
 **Available filters:**
 
-| Flag | Values |
-|------|--------|
-| `--status` | `submitted`, `accepted`, `confirmed`, `waitlisted`, `rejected`, `withdrawn`, `draft`, `deleted` |
+| Flag       | Values                                                                                                                     |
+| ---------- | -------------------------------------------------------------------------------------------------------------------------- |
+| `--status` | `submitted`, `accepted`, `confirmed`, `waitlisted`, `rejected`, `withdrawn`, `draft`, `deleted`                            |
 | `--format` | `lightning_10`, `presentation_20`, `presentation_25`, `presentation_40`, `presentation_45`, `workshop_120`, `workshop_240` |
-| `--sort` | `created`, `title`, `speaker`, `rating`, `reviews`, `status` |
+| `--sort`   | `created`, `title`, `speaker`, `rating`, `reviews`, `status`                                                               |
 
 **View a single proposal** with full details — speakers, topics, description, outline, and review scores:
 
@@ -156,16 +163,16 @@ cnctl admin proposals get <proposal-id>
 
 In **interactive mode**, selecting a proposal opens a scrollable detail view:
 
-| Key | Action |
-|-----|--------|
-| `↑` / `k` | Scroll up |
-| `↓` / `j` | Scroll down |
-| `Ctrl+U` / `PgUp` | Half-page up |
-| `Ctrl+D` / `PgDn` | Half-page down |
-| `←` / `h` | Previous proposal |
-| `→` / `l` | Next proposal |
-| `r` | Start a review |
-| `q` / `Esc` | Back to list |
+| Key               | Action            |
+| ----------------- | ----------------- |
+| `↑` / `k`         | Scroll up         |
+| `↓` / `j`         | Scroll down       |
+| `Ctrl+U` / `PgUp` | Half-page up      |
+| `Ctrl+D` / `PgDn` | Half-page down    |
+| `←` / `h`         | Previous proposal |
+| `→` / `l`         | Next proposal     |
+| `r`               | Start a review    |
+| `q` / `Esc`       | Back to list      |
 
 **JSON output** for scripting and automation:
 
@@ -207,8 +214,8 @@ cnctl admin sponsors list --status prospect,negotiating
 cnctl admin sponsors list --status closedWon
 ```
 
-| Flag | Values |
-|------|--------|
+| Flag       | Values                                                              |
+| ---------- | ------------------------------------------------------------------- |
 | `--status` | `prospect`, `contacted`, `negotiating`, `closed-won`, `closed-lost` |
 
 **JSON output:**

src/main.rs

@@ -3,7 +3,7 @@ use clap::{Parser, Subcommand};
 use cnctl::commands;
 
 #[derive(Parser)]
-#[command(name = "cnctl", about = "CLI for Cloud Native Days Norway")]
+#[command(name = "cnctl", about = "CLI for Cloud Native Days Norway", version)]
 struct Cli {
     #[command(subcommand)]
     command: Command,