docs: recommend tools.alsoAllow for optional plugin tools

docs/automation/cron-vs-heartbeat.md

@@ -201,7 +201,7 @@ For ad-hoc workflows, call Lobster directly.
 
 - Lobster runs as a **local subprocess** (`lobster` CLI) in tool mode and returns a **JSON envelope**.
 - If the tool returns `needs_approval`, you resume with a `resumeToken` and `approve` flag.
-- The tool is an **optional plugin**; you must allowlist `lobster` in `tools.allow`.
+- The tool is an **optional plugin**; enable it additively via `tools.alsoAllow: ["lobster"]` (recommended).
 - If you pass `lobsterPath`, it must be an **absolute path**.
 
 See [Lobster](/tools/lobster) for full usage and examples.

docs/tools/lobster.md

@@ -158,7 +158,19 @@ If you want to use a custom binary location, pass an **absolute** `lobsterPath`
 
 ## Enable the tool
 
-Lobster is an **optional** plugin tool (not enabled by default). Allow it per agent:
+Lobster is an **optional** plugin tool (not enabled by default).
+
+Recommended (additive, safe):
+
+```json
+{
+  "tools": {
+    "alsoAllow": ["lobster"]
+  }
+}
+```
+
+Or per-agent:
 
 ```json
 {
@@ -167,7 +179,7 @@ Lobster is an **optional** plugin tool (not enabled by default). Allow it per ag
       {
         "id": "main",
         "tools": {
-          "allow": ["lobster"]
+          "alsoAllow": ["lobster"]
         }
       }
     ]
@@ -175,7 +187,7 @@ Lobster is an **optional** plugin tool (not enabled by default). Allow it per ag
 }
 ```
 
-You can also allow it globally with `tools.allow` if every agent should see it.
+Avoid using `tools.allow: ["lobster"]` unless you intend to run in restrictive allowlist mode.
 
 Note: allowlists are opt-in for optional plugins. If your allowlist only names
 plugin tools (like `lobster`), Clawdbot keeps core tools enabled. To restrict core