Add gitagent.sh feature (bun install global) (#244)

Author: Copilot

README.md

@@ -48,6 +48,7 @@
 | [feature-installer](https://github.com/devcontainer-community/devcontainer-features/tree/main/src/feature-installer) | `feature-installer` — install devcontainer features at runtime | curl | 1.0.0 |
 | [fzf](https://github.com/devcontainer-community/devcontainer-features/tree/main/src/fzf) | `fzf` — general-purpose command-line fuzzy finder | gh release | 1.0.0 |
 | [getdnote.com](https://github.com/devcontainer-community/devcontainer-features/tree/main/src/getdnote.com) | `dnote` — simple command-line notebook for developers | gh release | 1.0.0 |
+| [gitagent.sh](https://github.com/devcontainer-community/devcontainer-features/tree/main/src/gitagent.sh) | `gitagent` — framework-agnostic, git-native standard for defining AI agents | bun | 1.0.0 |
 | [github.com/cli](https://github.com/devcontainer-community/devcontainer-features/tree/main/src/github.com-cli) | `gh` — GitHub CLI | curl | 1.0.1 |
 | [helix-editor.com](https://github.com/devcontainer-community/devcontainer-features/tree/main/src/helix-editor.com) | `hx` — modal text editor with built-in LSP | gh release | 1.0.0 |
 | [hermes-agent.nousresearch.com](https://github.com/devcontainer-community/devcontainer-features/tree/main/src/hermes-agent.nousresearch.com) | `hermes` — self-improving AI agent by Nous Research | curl | 1.0.0 |

src/gitagent.sh/NOTES.md

@@ -0,0 +1,17 @@
+# gitagent
+
+## Project
+
+- [gitagent](https://gitagent.sh)
+
+## Description
+
+A framework-agnostic, git-native standard for defining AI agents. `gitagent` lets you clone a repo and get an agent — version control, branching, and collaboration built in.
+
+## Installation Method
+
+Installed as a global package via [Bun](https://bun.sh) (`bun install -g @shreyaskapale/gitagent`). Bun is automatically installed if not already present.
+
+## Other Notes
+
+_No additional notes._

src/gitagent.sh/devcontainer-feature.json

@@ -0,0 +1,17 @@
+{
+    "name": "gitagent.sh",
+    "id": "gitagent.sh",
+    "version": "1.0.0",
+    "description": "Install \"gitagent\" binary",
+    "documentationURL": "https://github.com/devcontainer-community/devcontainer-features/tree/main/src/gitagent.sh",
+    "options": {
+        "version": {
+            "type": "string",
+            "default": "latest",
+            "proposals": [
+                "latest"
+            ],
+            "description": "Version of \"gitagent\" to install."
+        }
+    }
+}

src/gitagent.sh/install.sh

@@ -0,0 +1,59 @@
+#!/bin/bash
+set -o errexit
+set -o pipefail
+set -o noclobber
+set -o nounset
+set -o allexport
+readonly binaryName='gitagent'
+readonly binaryTargetFolder='/usr/local/bin'
+apt_get_update() {
+    if [ "$(find /var/lib/apt/lists/* | wc -l)" = "0" ]; then
+        echo "Running apt-get update..."
+        apt-get update -y
+    fi
+}
+apt_get_checkinstall() {
+    if ! dpkg -s "$@" >/dev/null 2>&1; then
+        apt_get_update
+        DEBIAN_FRONTEND=noninteractive apt-get -y install --no-install-recommends --no-install-suggests --option 'Debug::pkgProblemResolver=true' --option 'Debug::pkgAcquire::Worker=1' "$@"
+    fi
+}
+apt_get_cleanup() {
+    apt-get clean
+    rm -rf /var/lib/apt/lists/*
+}
+echo_banner() {
+    local text="$1"
+    echo -e "\e[1m\e[97m\e[41m$text\e[0m"
+}
+utils_check_version() {
+    local version=$1
+    if ! [[ "${version:-}" =~ ^(latest|[0-9]+\.[0-9]+\.[0-9]+)$ ]]; then
+        printf >&2 '=== [ERROR] Option "version" (value: "%s") is not "latest" or valid semantic version format "X.Y.Z" !\n' \
+            "$version"
+        exit 1
+    fi
+}
+bun_ensure_installed() {
+    if ! command -v bun >/dev/null 2>&1; then
+        echo "Bun is not installed. Installing bun to /usr/local..."
+        apt_get_checkinstall unzip curl ca-certificates
+        export BUN_INSTALL=/usr/local
+        curl -fsSL https://bun.sh/install | bash
+    fi
+}
+install() {
+    utils_check_version "$VERSION"
+    export BUN_INSTALL=/usr/local
+    bun_ensure_installed
+    if [ "$VERSION" == 'latest' ] || [ -z "$VERSION" ]; then
+        bun install -g @shreyaskapale/gitagent
+    else
+        bun install -g "@shreyaskapale/gitagent@${VERSION}"
+    fi
+    apt_get_cleanup
+}
+echo_banner "devcontainer.community"
+echo "Installing $binaryName..."
+install "$@"
+echo "(*) Done!"

test/gitagent.sh/test.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+
+set -e
+
+# Optional: Import test library bundled with the devcontainer CLI
+# See https://github.com/devcontainers/cli/blob/HEAD/docs/features/test.md#dev-container-features-test-lib
+# Provides the 'check' and 'reportResults' commands.
+source dev-container-features-test-lib
+
+# Feature-specific tests
+# The 'check' command comes from the dev-container-features-test-lib. Syntax is...
+# check <LABEL> <cmd> [args...]
+
+check "check existence" bash -c "ls -lah /usr/local/bin/gitagent"
+
+# Report results
+# If any of the checks above exited with a non-zero exit code, the test will fail.
+reportResults