fix: scope skills cli to active agent workspace

docs/cli/skills.md

@@ -25,21 +25,29 @@ openclaw skills search --limit 20 --json
 openclaw skills install <slug>
 openclaw skills install <slug> --version <version>
 openclaw skills install <slug> --force
+openclaw skills install <slug> --agent <id>
 openclaw skills update <slug>
 openclaw skills update --all
+openclaw skills update --all --agent <id>
 openclaw skills list
 openclaw skills list --eligible
 openclaw skills list --json
 openclaw skills list --verbose
+openclaw skills list --agent <id>
 openclaw skills info <name>
 openclaw skills info <name> --json
+openclaw skills info <name> --agent <id>
 openclaw skills check
 openclaw skills check --json
+openclaw skills check --agent <id>
 ```
 
 `search`/`install`/`update` use ClawHub directly and install into the active
 workspace `skills/` directory. `list`/`info`/`check` still inspect the local
-skills visible to the current workspace and config.
+skills visible to the current workspace and config. Workspace-backed commands
+resolve the target workspace from `--agent <id>`, then the current working
+directory when it is inside a configured agent workspace, then the default
+agent.
 
 This CLI `install` command downloads skill folders from ClawHub. Gateway-backed
 skill dependency installs triggered from onboarding or Skills settings use the
@@ -52,6 +60,8 @@ Notes:
 - `search --limit <n>` caps returned results.
 - `install --force` overwrites an existing workspace skill folder for the same
   slug.
+- `--agent <id>` targets one configured agent workspace and overrides current
+  working directory inference.
 - `update --all` only updates tracked ClawHub installs in the active workspace.
 - `list` is the default action when no subcommand is provided.
 - `list`, `info`, and `check` write their rendered output to stdout. With