Add support for release_version, same as the CLI (#9)

Author: RomainCscn

README.md

@@ -48,7 +48,7 @@ steps:
 | `access_key`    | Yes      |          | Linear pipeline access key for authentication                              |
 | `command`       | No       | `sync`   | Command to run: `sync`, `complete`, or `update`                            |
 | `name`          | No       |          | Custom release name for `sync`. Continuous pipelines: used on create. Scheduled pipelines: used only when `sync` creates a release; existing release names are preserved. Ignored (with warning) for `complete` and `update`. |
-| `version`       | No       |          | Release version identifier                                                 |
+| `version`       | No       |          | Release version identifier (alias: `release_version`)                      |
 | `stage`         | No       |          | Deployment stage such as `staging` or `production` (required for `update`) |
 | `include_paths` | No       |          | Filter commits by file paths (comma-separated globs for monorepos)         |
 | `cli_version`   | No       | `v0.4.0` | Linear Release CLI version tag to install                                  |

action.yml

@@ -20,6 +20,9 @@ inputs:
   version:
     description: Release version identifier. Maps to CLI --release-version (e.g., "v1.2.3").
     required: false
+  release_version:
+    description: Alias for "version". Maps to CLI --release-version.
+    required: false
   stage:
     description: Deployment stage such as "staging" or "production". Required when command is "update".
     required: false
@@ -63,5 +66,6 @@ runs:
         COMMAND: ${{ inputs.command }}
         INPUT_NAME: ${{ inputs.name }}
         INPUT_VERSION: ${{ inputs.version }}
+        INPUT_RELEASE_VERSION: ${{ inputs.release_version }}
         INPUT_STAGE: ${{ inputs.stage }}
         INPUT_INCLUDE_PATHS: ${{ inputs.include_paths }}

run.sh

@@ -24,6 +24,11 @@ if [[ -z "${GITHUB_OUTPUT:-}" ]]; then
   exit 1
 fi
 
+# Resolve alias: "release_version" → "version"
+if [[ -z "${INPUT_VERSION:-}" && -n "${INPUT_RELEASE_VERSION:-}" ]]; then
+  INPUT_VERSION="${INPUT_RELEASE_VERSION}"
+fi
+
 COMMAND="${COMMAND:-sync}"
 case "$COMMAND" in
   sync|complete|update)