feat(plan): support plan mode in non-interactive mode (#22670)

docs/reference/policy-engine.md

@@ -90,6 +90,17 @@ If `argsPattern` is specified, the tool's arguments are converted to a stable
 JSON string, which is then tested against the provided regular expression. If
 the arguments don't match the pattern, the rule does not apply.
 
+#### Execution environment
+
+If `interactive` is specified, the rule will only apply if the CLI's execution
+environment matches the specified boolean value:
+
+- `true`: The rule applies only in interactive mode.
+- `false`: The rule applies only in non-interactive (headless) mode.
+
+If omitted, the rule applies to both interactive and non-interactive
+environments.
+
 ### Decisions
 
 There are three possible decisions a rule can enforce:
@@ -286,6 +297,10 @@ deny_message = "Deletion is permanent"
 
 # (Optional) An array of approval modes where this rule is active.
 modes = ["autoEdit"]
+
+# (Optional) A boolean to restrict the rule to interactive (true) or non-interactive (false) environments.
+# If omitted, the rule applies to both.
+interactive = true
 ```
 
 ### Using arrays (lists)