feat(cli): add json schema to cli tool (#54523)

Merged via squash.

Prepared head SHA: 39c15ee70d
Co-authored-by: kvokka <15954013+kvokka@users.noreply.github.com>
Co-authored-by: altaywtf <9790196+altaywtf@users.noreply.github.com>
Reviewed-by: @altaywtf

docs/cli/config.md

@@ -1,5 +1,5 @@
 ---
-summary: "CLI reference for `openclaw config` (get/set/unset/file/validate)"
+summary: "CLI reference for `openclaw config` (get/set/unset/file/schema/validate)"
 read_when:
   - You want to read or edit config non-interactively
 title: "config"
@@ -7,7 +7,7 @@ title: "config"
 
 # `openclaw config`
 
-Config helpers for non-interactive edits in `openclaw.json`: get/set/unset/validate
+Config helpers for non-interactive edits in `openclaw.json`: get/set/unset/file/schema/validate
 values by path and print the active config file. Run without a subcommand to
 open the configure wizard (same as `openclaw configure`).
 
@@ -15,6 +15,7 @@ open the configure wizard (same as `openclaw configure`).
 
 ```bash
 openclaw config file
+openclaw config schema
 openclaw config get browser.executablePath
 openclaw config set browser.executablePath "/usr/bin/google-chrome"
 openclaw config set agents.defaults.heartbeat.every "2h"
@@ -27,7 +28,21 @@ openclaw config validate
 openclaw config validate --json
 ```
 
-## Paths
+### `config schema`
+
+Print the generated JSON schema for `openclaw.json` to stdout as plain text.
+
+```bash
+openclaw config schema
+```
+
+Pipe it into a file when you want to inspect or validate it with other tools:
+
+```bash
+openclaw config schema > openclaw.schema.json
+```
+
+### Paths
 
 Paths use dot or bracket notation:
 

docs/cli/index.md

@@ -396,7 +396,7 @@ Interactive configuration wizard (models, channels, skills, gateway).
 
 ### `config`
 
-Non-interactive config helpers (get/set/unset/file/validate). Running `openclaw config` with no
+Non-interactive config helpers (get/set/unset/file/schema/validate). Running `openclaw config` with no
 subcommand launches the wizard.
 
 Subcommands:
@@ -413,6 +413,7 @@ Subcommands:
 - `config set --strict-json`: require JSON5 parsing for path/value input. `--json` remains a legacy alias for strict parsing outside dry-run output mode.
 - `config unset <path>`: remove a value.
 - `config file`: print the active config file path.
+- `config schema`: print the generated JSON schema for `openclaw.json`.
 - `config validate`: validate the current config against the schema without starting the gateway.
 - `config validate --json`: emit machine-readable JSON output.