docs: clarify GitHub release limits (#758)

Signed-off-by: Rui Chen <rui@chenrui.dev>

Author: chenrui333

README.md

@@ -186,13 +186,13 @@ The following are optional as `step.with` keys
 | `draft`                    | Boolean | Indicator of whether or not this release is a draft                                                                                                                                                                                                                                                                                                                                                                                             |
 | `prerelease`               | Boolean | Indicator of whether or not is a prerelease                                                                                                                                                                                                                                                                                                                                                                                                     |
 | `preserve_order`           | Boolean | Upload assets sequentially in the provided order. This controls the action's upload behavior, but it does not control the final asset ordering that GitHub may display on the release page or return from the Releases API.                                                                                                                                                                                                                 |
-| `files`                    | String  | Newline-delimited globs of paths to assets to upload for release. Escape glob metacharacters when you need to match a literal filename that contains them, such as `[` or `]`. `~/...` expands to the runner home directory. On Windows, both `\` and `/` separators are accepted.                                                                                                                                                          |
+| `files`                    | String  | Newline-delimited globs of paths to assets to upload for release. Escape glob metacharacters when you need to match a literal filename that contains them, such as `[` or `]`. `~/...` expands to the runner home directory. On Windows, both `\` and `/` separators are accepted. GitHub may normalize raw asset filenames that contain special characters; the action restores the asset label when possible, but the final download name remains GitHub-controlled. |
 | `overwrite_files`          | Boolean | Indicator of whether files should be overwritten when they already exist. Defaults to true                                                                                                                                                                                                                                                                                                                                                      |
 | `name`                     | String  | Name of the release. defaults to tag name                                                                                                                                                                                                                                                                                                                                                                                                       |
 | `tag_name`                 | String  | Name of a tag. defaults to `github.ref_name`. `refs/tags/<name>` values are normalized to `<name>`.                                                                                                                                                                                                                                                                                                                                                |
 | `fail_on_unmatched_files`  | Boolean | Indicator of whether to fail if any of the `files` globs match nothing                                                                                                                                                                                                                                                                                                                                                                          |
 | `repository`               | String  | Name of a target repository in `<owner>/<repo>` format. Defaults to GITHUB_REPOSITORY env variable                                                                                                                                                                                                                                                                                                                                              |
-| `target_commitish`         | String  | Commitish value that determines where the Git tag is created from. Can be any branch or commit SHA. Defaults to repository default branch.                                                                                                                                                                                                                                                                                                      |
+| `target_commitish`         | String  | Commitish value that determines where the Git tag is created from. Can be any branch or commit SHA. Defaults to repository default branch. When creating a new tag for an older commit, `github.token` may not have permission to create the ref; use a PAT or another token with sufficient contents permissions if you hit `403 Resource not accessible by integration`.                                                                 |
 | `token`                    | String  | Authorized GitHub token or PAT. Defaults to `${{ github.token }}` when omitted. A non-empty explicit token overrides `GITHUB_TOKEN`. Passing `""` treats the token as explicitly unset, so omit the input entirely or use an expression such as `${{ inputs.token || github.token }}` when wrapping this action in a composite action.                                                                                                                                                  |
 | `discussion_category_name` | String  | If specified, a discussion of the specified category is created and linked to the release. The value must be a category that already exists in the repository. For more information, see ["Managing categories for discussions in your repository."](https://docs.github.com/en/discussions/managing-discussions-for-your-community/managing-categories-for-discussions-in-your-repository)                                                     |
 | `generate_release_notes`   | Boolean | Whether to automatically generate the name and body for this release. If name is specified, the specified name will be used; otherwise, a name will be automatically generated. If body is specified, the body will be pre-pended to the automatically generated notes. See the [GitHub docs for this feature](https://docs.github.com/en/repositories/releasing-projects-on-github/automatically-generated-release-notes) for more information |

action.yml

@@ -25,7 +25,7 @@ inputs:
     description: "Upload artifacts sequentially in the provided order. This does not control the final display order GitHub uses for release assets."
     required: false
   files:
-    description: "Newline-delimited list of path globs for asset files to upload. Escape glob metacharacters when matching literal filenames that contain them. `~/...` expands to the runner home directory. On Windows, both \\ and / path separators are accepted."
+    description: "Newline-delimited list of path globs for asset files to upload. Escape glob metacharacters when matching literal filenames that contain them. `~/...` expands to the runner home directory. On Windows, both \\ and / path separators are accepted. GitHub may normalize raw asset filenames that contain special characters; the action restores the asset label when possible, but the final download name remains GitHub-controlled."
     required: false
   working_directory:
     description: "Base directory to resolve 'files' globs against (defaults to job working-directory)"
@@ -45,7 +45,7 @@ inputs:
     required: false
     default: ${{ github.token }}
   target_commitish:
-    description: "Commitish value that determines where the Git tag is created from. Can be any branch or commit SHA."
+    description: "Commitish value that determines where the Git tag is created from. Can be any branch or commit SHA. When creating a new tag for an older commit, `github.token` may not have permission to create the ref; use a PAT or another token with sufficient contents permissions if you hit 403 `Resource not accessible by integration`."
     required: false
   discussion_category_name:
     description: "If specified, a discussion of the specified category is created and linked to the release. The value must be a category that already exists in the repository. If there is already a discussion linked to the release, this parameter is ignored."