Add --json flag documentation for CLI commands

Document the new --json flag that outputs results in machine-readable JSON format:
- Add --json to Universal Flags in CLI overview
- Add JSON Output sections to deploy and run command docs with examples

Author: JoshuaBatty

documentation/cli/00_overview.md

@@ -62,3 +62,13 @@ Specifies the path to Leo program root folder.  Defaults to `./`.
 
 #### `--home <HOME>`  
 Specifies the path to the `.aleo` program registry.  This is where programs downloaded from the network will be cached.  Defaults to `~/.aleo/registry`.
+
+#### `--json`
+Outputs results as JSON to stdout. Implies `-q` (suppresses normal CLI output).
+
+Supported commands: `run`, `execute`, `test`, `deploy`, `upgrade`, `query`, `synthesize`.
+
+**Example - piping to a file:**
+```bash
+leo run --json main 1u32 2u32 > output.json
+```

documentation/cli/06_deploy.md

@@ -77,6 +77,33 @@ Once it is deployed, it CANNOT be changed.
 
 See the **[Deploying](./../guides/03_deploying.md)** guide for more details.
 
+### JSON Output
+
+Use the `--json` flag to output results in JSON format for programmatic use:
+
+```bash
+leo deploy --json -y
+```
+
+```json
+{
+  "deployments": [
+    {
+      "program_id": "my_program.aleo",
+      "transaction_id": "at1..."
+    }
+  ]
+}
+```
+
+This is useful for scripting and CI/CD pipelines:
+```bash
+# Deploy and extract the transaction ID
+leo deploy --json -y | jq '.deployments[0].transaction_id'
+
+# Deploy and save full output to a file
+leo deploy --json -y > deployment_result.json
+```
 
 ### Flags: