fix(tools): conditionally register look_at when multimodal-looker enabled (#1016)

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: justsisyphus <justsisyphus@users.noreply.github.com>
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/index.test.ts

@@ -0,0 +1,81 @@
+import { describe, expect, it } from "bun:test"
+import { includesCaseInsensitive } from "./shared"
+
+/**
+ * Tests for conditional tool registration logic in index.ts
+ * 
+ * The actual plugin initialization is complex to test directly,
+ * so we test the underlying logic that determines tool registration.
+ */
+describe("look_at tool conditional registration", () => {
+  describe("isMultimodalLookerEnabled logic", () => {
+    // #given multimodal-looker is in disabled_agents
+    // #when checking if agent is enabled
+    // #then should return false (disabled)
+    it("returns false when multimodal-looker is disabled (exact case)", () => {
+      const disabledAgents = ["multimodal-looker"]
+      const isEnabled = !includesCaseInsensitive(disabledAgents, "multimodal-looker")
+      expect(isEnabled).toBe(false)
+    })
+
+    // #given multimodal-looker is in disabled_agents with different case
+    // #when checking if agent is enabled
+    // #then should return false (case-insensitive match)
+    it("returns false when multimodal-looker is disabled (case-insensitive)", () => {
+      const disabledAgents = ["Multimodal-Looker"]
+      const isEnabled = !includesCaseInsensitive(disabledAgents, "multimodal-looker")
+      expect(isEnabled).toBe(false)
+    })
+
+    // #given multimodal-looker is NOT in disabled_agents
+    // #when checking if agent is enabled
+    // #then should return true (enabled)
+    it("returns true when multimodal-looker is not disabled", () => {
+      const disabledAgents = ["oracle", "librarian"]
+      const isEnabled = !includesCaseInsensitive(disabledAgents, "multimodal-looker")
+      expect(isEnabled).toBe(true)
+    })
+
+    // #given disabled_agents is empty
+    // #when checking if agent is enabled
+    // #then should return true (enabled by default)
+    it("returns true when disabled_agents is empty", () => {
+      const disabledAgents: string[] = []
+      const isEnabled = !includesCaseInsensitive(disabledAgents, "multimodal-looker")
+      expect(isEnabled).toBe(true)
+    })
+
+    // #given disabled_agents is undefined (simulated as empty array)
+    // #when checking if agent is enabled
+    // #then should return true (enabled by default)
+    it("returns true when disabled_agents is undefined (fallback to empty)", () => {
+      const disabledAgents = undefined
+      const isEnabled = !includesCaseInsensitive(disabledAgents ?? [], "multimodal-looker")
+      expect(isEnabled).toBe(true)
+    })
+  })
+
+  describe("conditional tool spread pattern", () => {
+    // #given lookAt is not null (agent enabled)
+    // #when spreading into tool object
+    // #then look_at should be included
+    it("includes look_at when lookAt is not null", () => {
+      const lookAt = { execute: () => {} } // mock tool
+      const tools = {
+        ...(lookAt ? { look_at: lookAt } : {}),
+      }
+      expect(tools).toHaveProperty("look_at")
+    })
+
+    // #given lookAt is null (agent disabled)
+    // #when spreading into tool object
+    // #then look_at should NOT be included
+    it("excludes look_at when lookAt is null", () => {
+      const lookAt = null
+      const tools = {
+        ...(lookAt ? { look_at: lookAt } : {}),
+      }
+      expect(tools).not.toHaveProperty("look_at")
+    })
+  })
+})

src/index.ts

@@ -230,7 +230,11 @@ const OhMyOpenCodePlugin: Plugin = async (ctx) => {
   const backgroundTools = createBackgroundTools(backgroundManager, ctx.client);
 
   const callOmoAgent = createCallOmoAgent(ctx, backgroundManager);
-  const lookAt = createLookAt(ctx);
+  const isMultimodalLookerEnabled = !includesCaseInsensitive(
+    pluginConfig.disabled_agents ?? [],
+    "multimodal-looker"
+  );
+  const lookAt = isMultimodalLookerEnabled ? createLookAt(ctx) : null;
   const delegateTask = createDelegateTask({
     manager: backgroundManager,
     client: ctx.client,
@@ -300,7 +304,7 @@ const OhMyOpenCodePlugin: Plugin = async (ctx) => {
       ...builtinTools,
       ...backgroundTools,
       call_omo_agent: callOmoAgent,
-      look_at: lookAt,
+      ...(lookAt ? { look_at: lookAt } : {}),
       delegate_task: delegateTask,
       skill: skillTool,
       skill_mcp: skillMcpTool,