feat: Add UI for custom tools (#12585)

### Tools list

<img width="2316" height="666" alt="CleanShot 2025-10-03 at 20 42 41@2x"
src="https://github.com/user-attachments/assets/ccbffd16-804d-4eb8-9c64-2d1cfd407e4e"
/>

### Tools form 

<img width="2294" height="2202" alt="CleanShot 2025-10-03 at 20 43
05@2x"
src="https://github.com/user-attachments/assets/9f49aa09-75a1-4585-a09d-837ca64139b8"
/>

## Response

<img width="800" height="2144" alt="CleanShot 2025-10-03 at 20 45 56@2x"
src="https://github.com/user-attachments/assets/b0c3c899-6050-4c51-baed-c8fbec5aae61"
/>

---------

Co-authored-by: Pranav <pranavrajs@gmail.com>
Co-authored-by: Pranav <pranav@chatwoot.com>

app/javascript/dashboard/i18n/locale/en/integrations.json

@@ -750,6 +750,115 @@
         }
       }
     },
+    "CUSTOM_TOOLS": {
+      "HEADER": "Tools",
+      "ADD_NEW": "Create a new tool",
+      "EMPTY_STATE": {
+        "TITLE": "No custom tools available",
+        "SUBTITLE": "Create custom tools to connect your assistant with external APIs and services, enabling it to fetch data and perform actions on your behalf.",
+        "FEATURE_SPOTLIGHT": {
+          "TITLE": "Custom Tools",
+          "NOTE": "Custom tools allow your assistant to interact with external APIs and services. Create tools to fetch data, perform actions, or integrate with your existing systems to enhance your assistant's capabilities."
+        }
+      },
+      "FORM_DESCRIPTION": "Configure your custom tool to connect with external APIs",
+      "OPTIONS": {
+        "EDIT_TOOL": "Edit tool",
+        "DELETE_TOOL": "Delete tool"
+      },
+      "CREATE": {
+        "TITLE": "Create Custom Tool",
+        "SUCCESS_MESSAGE": "Custom tool created successfully",
+        "ERROR_MESSAGE": "Failed to create custom tool"
+      },
+      "EDIT": {
+        "TITLE": "Edit Custom Tool",
+        "SUCCESS_MESSAGE": "Custom tool updated successfully",
+        "ERROR_MESSAGE": "Failed to update custom tool"
+      },
+      "DELETE": {
+        "TITLE": "Delete Custom Tool",
+        "DESCRIPTION": "Are you sure you want to delete this custom tool? This action cannot be undone.",
+        "CONFIRM": "Yes, delete",
+        "SUCCESS_MESSAGE": "Custom tool deleted successfully",
+        "ERROR_MESSAGE": "Failed to delete custom tool"
+      },
+      "FORM": {
+        "TITLE": {
+          "LABEL": "Tool Name",
+          "PLACEHOLDER": "Order Lookup",
+          "ERROR": "Tool name is required"
+        },
+        "DESCRIPTION": {
+          "LABEL": "Description",
+          "PLACEHOLDER": "Looks up order details by order ID"
+        },
+        "HTTP_METHOD": {
+          "LABEL": "Method"
+        },
+        "ENDPOINT_URL": {
+          "LABEL": "Endpoint URL",
+          "PLACEHOLDER": "https://api.example.com/orders/{'{{'} order_id {'}}'}",
+          "ERROR": "Valid URL is required"
+        },
+        "AUTH_TYPE": {
+          "LABEL": "Authentication Type"
+        },
+        "AUTH_TYPES": {
+          "NONE": "None",
+          "BEARER": "Bearer Token",
+          "BASIC": "Basic Auth",
+          "API_KEY": "API Key"
+        },
+        "AUTH_CONFIG": {
+          "BEARER_TOKEN": "Bearer Token",
+          "BEARER_TOKEN_PLACEHOLDER": "Enter your bearer token",
+          "USERNAME": "Username",
+          "USERNAME_PLACEHOLDER": "Enter username",
+          "PASSWORD": "Password",
+          "PASSWORD_PLACEHOLDER": "Enter password",
+          "API_KEY": "Header Name",
+          "API_KEY_PLACEHOLDER": "X-API-Key",
+          "API_VALUE": "Header Value",
+          "API_VALUE_PLACEHOLDER": "Enter API key value"
+        },
+        "PARAMETERS": {
+          "LABEL": "Parameters",
+          "HELP_TEXT": "Define the parameters that will be extracted from user queries"
+        },
+        "ADD_PARAMETER": "Add Parameter",
+        "PARAM_NAME": {
+          "PLACEHOLDER": "Parameter name (e.g., order_id)"
+        },
+        "PARAM_TYPE": {
+          "PLACEHOLDER": "Type"
+        },
+        "PARAM_TYPES": {
+          "STRING": "String",
+          "NUMBER": "Number",
+          "BOOLEAN": "Boolean",
+          "ARRAY": "Array",
+          "OBJECT": "Object"
+        },
+        "PARAM_DESCRIPTION": {
+          "PLACEHOLDER": "Description of the parameter"
+        },
+        "PARAM_REQUIRED": {
+          "LABEL": "Required"
+        },
+        "REQUEST_TEMPLATE": {
+          "LABEL": "Request Body Template (Optional)",
+          "PLACEHOLDER": "{'{'}\n  \"order_id\": \"{'{{'} order_id {'}}'}\"\n{'}'}"
+        },
+        "RESPONSE_TEMPLATE": {
+          "LABEL": "Response Template (Optional)",
+          "PLACEHOLDER": "Order {'{{'} order_id {'}}'} status: {'{{'} status {'}}'}"
+        },
+        "ERRORS": {
+          "PARAM_NAME_REQUIRED": "Parameter name is required"
+        }
+      }
+    },
     "RESPONSES": {
       "HEADER": "FAQs",
       "ADD_NEW": "Create new FAQ",

app/javascript/dashboard/i18n/locale/en/settings.json

@@ -304,6 +304,7 @@
     "CAPTAIN_ASSISTANTS": "Assistants",
     "CAPTAIN_DOCUMENTS": "Documents",
     "CAPTAIN_RESPONSES": "FAQs",
+    "CAPTAIN_TOOLS": "Tools",
     "HOME": "Home",
     "AGENTS": "Agents",
     "AGENT_BOTS": "Bots",