feat: upgrade core agent workflow and system utilities

package.json

@@ -2,7 +2,7 @@
   "name": "g1nation",
   "displayName": "G1nation",
   "description": "High-performance autonomous local AI coding agent for VS Code. Features vectorized inference, asynchronous task management, and 100% offline processing.",
-  "version": "2.33.8",
+  "version": "2.33.9",
   "publisher": "connectailab",
   "license": "MIT",
   "icon": "assets/icon.png",
@@ -100,53 +100,6 @@
           "default": false,
           "description": "Enable Multi-Agent Workflow (Planner -> Researcher -> Writer) for complex tasks."
         },
-        "g1nation.multiAgentWorkflow": {
-          "type": "array",
-          "default": [
-            {
-              "id": "planner",
-              "name": "Planner",
-              "input": "original",
-              "prompt": "You are the [Master Strategist & Planner].\nTransform the user request into a precise execution blueprint.\nOutput Markdown with Objective, Core Challenges, Data Requirements, and Step-by-Step Tasks."
-            },
-            {
-              "id": "researcher",
-              "name": "Researcher",
-              "input": "combined",
-              "prompt": "You are the [Senior Technical Researcher].\nExtract, filter, and synthesize high-signal facts from the plan and available context.\nOutput Key Facts, Technical Deep-Dive, Gaps, and Summary of Knowledge."
-            },
-            {
-              "id": "writer",
-              "name": "Writer",
-              "input": "combined",
-              "prompt": "You are the [Lead Synthesis Writer & Editor].\nProduce the final response in the user language with a clear conclusion and actionable recommendation.\nPreserve important technical nuance without padding."
-            }
-          ],
-          "items": {
-            "type": "object",
-            "properties": {
-              "id": {
-                "type": "string",
-                "description": "Stable stage id."
-              },
-              "name": {
-                "type": "string",
-                "description": "Stage label shown in progress UI."
-              },
-              "input": {
-                "type": "string",
-                "enum": ["original", "previous", "combined"],
-                "default": "combined",
-                "description": "Which input this stage receives: original user request, previous stage output, or both."
-              },
-              "prompt": {
-                "type": "string",
-                "description": "Role and instructions for this stage."
-              }
-            }
-          },
-          "description": "Configurable Multi-Agent workflow. Add, remove, reorder, or rewrite stages in settings JSON."
-        },
         "g1nation.memoryEnabled": {
           "type": "boolean",
           "default": true,