feat(mcp) - optimize instruction prompt and hide get_tool_catalog (#21183)

Workspace-aware initialize.instructions

- Deleted the static mcp-server-instructions.const.ts
- Created build-mcp-server-instructions.util.ts — a comprehensive system
prompt with identity, object list, tool grammar, routing decision tree,
intent mapping, skills vs tools, safety constraints, and data efficiency
guidelines
- Created McpInstructionBuilderService — fetches workspace-specific
object names + skill names and injects them into the instructions


Hide/deprecate get_tool_catalog

Benefit : skip first MCP call (tools are included in instruction)

packages/twenty-server/src/engine/core-modules/tool/tools/code-interpreter-tool/twenty-mcp-helper.const.ts

@@ -14,8 +14,8 @@ class TwentyMCP:
 
     Two categories of tools exist behind /mcp:
 
-     - MCP-native: execute_tool, learn_tools, load_skills, get_tool_catalog,
-       search_help_center. These are the 5 surfaces exposed directly.
+     - MCP-native: execute_tool, learn_tools, load_skills,
+       search_help_center. These are the 4 surfaces exposed directly.
 
      - Workspace catalog: 250+ CRUD / view / workflow / dashboard tools
        like find_companies, create_person, update_opportunity. These are
@@ -30,7 +30,6 @@ class TwentyMCP:
         'execute_tool',
         'learn_tools',
         'load_skills',
-        'get_tool_catalog',
         'search_help_center',
     })
 
@@ -86,34 +85,6 @@ class TwentyMCP:
                 return wrapped['result']
         return wrapped
 
-    def list_tools(self):
-        """
-        List all workspace catalog tools (250+), not the 5 MCP meta-tools.
-
-        Use call_tool(name, args) to invoke any of them — routing is
-        handled for you.
-
-        Returns:
-            Flat list of tool entries, each with name, description, and
-            category. get_tool_catalog groups by category internally; we
-            flatten for ergonomics.
-        """
-        catalog = self.call_tool('get_tool_catalog', {})
-        # get_tool_catalog returns { 'catalog': { '<category>': [tools...] } }
-        # Flatten to a single list; preserve the category as a per-tool field
-        # so the docstring's promise holds and consumers don't have to re-call
-        # the catalog. Leave untouched if the shape is unexpected.
-        if isinstance(catalog, dict):
-            grouped = catalog.get('catalog', catalog)
-            if isinstance(grouped, dict):
-                return [
-                    ({**tool, 'category': category}
-                     if isinstance(tool, dict) and 'category' not in tool
-                     else tool)
-                    for category, tools in grouped.items()
-                    for tool in tools
-                ]
-        return catalog
 
     def _raw_mcp_call(self, name: str, arguments: dict = None):
         """Low-level: issue a tools/call against the MCP surface verbatim."""