fix: populate stderr from stdout on older Click, fix force comment wording

- When Click does not expose result.stderr (older versions where stderr
  is mixed into stdout), use stdout as stderr on non-zero exit so
  workflows can consistently read steps.<id>.output.stderr for errors.
- Update README inline comment for force: wording to say 'when target
  directory already exists' rather than 'non-empty directory', matching
  the actual specify init behavior for the project: form.

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

Author: mnriem

src/specify_cli/workflows/steps/init/__init__.py

@@ -263,7 +263,10 @@ def _run_init(
         try:
             stderr = result.stderr or ""
         except (ValueError, AttributeError):
-            stderr = ""
+            # Older Click: stderr is mixed into stdout.  On failure, treat
+            # stdout as stderr so workflows can consistently read
+            # steps.<id>.output.stderr for error details.
+            stderr = stdout if result.exit_code != 0 else ""
 
         if result.exit_code != 0 and result.exception is not None:
             detail = f"{type(result.exception).__name__}: {result.exception}"

workflows/README.md

@@ -128,7 +128,7 @@ and resolves the integration from the step config or the workflow default:
   integration: copilot       # Optional: defaults to workflow integration
   integration_options: "--skills"  # Optional: extra options for the integration
   script: sh                 # Optional: sh or ps
-  force: true                # Optional: required to merge into a non-empty directory
+  force: true                # Optional: required when target directory already exists
   preset: healthcare-compliance   # Optional preset ID
 ```