gstack-config truncates workspace_root paths at the first space #1782

Observed problem

gstack-config get reads values with awk '{print $2}', so config values that legitimately contain spaces are truncated. The visible case is workspace_root, which is documented as a user-set directory for /ship sibling worktree scanning.

Repro on current origin/main (ce5fbfa9):

GSTACK_HOME=$(mktemp -d)
bin/gstack-config set workspace_root "/tmp/Conductor Workspaces"
bin/gstack-config get workspace_root

Current output:

/tmp/Conductor

The config file itself contains the full value:

workspace_root: /tmp/Conductor Workspaces

Expected behavior

gstack-config get workspace_root should return the full value after workspace_root:, preserving spaces, so gstack-next-version can scan sibling worktrees under configured roots such as /tmp/Conductor Workspaces or user directories with spaces.

Duplicate searches performed

I searched open and closed issues/PRs for:

• workspace_root space
• gstack-config config.yaml space
• gstack-config workspace_root spaces
• open PRs touching gstack-config

I did not find an existing issue or canonical PR for this truncation bug.

Candidate fix shape

Replace the awk '{print $2}' config read path with a small helper that strips key: and leading/trailing whitespace while preserving internal spaces. Reuse the helper for both get and the active-values section of list, then add a regression test for a workspace_root value containing spaces.