refactor: remove redundant code - eliminate 7 workspace_path duplications

- Removed redundant workspace_path='/workspace' from 7 sandbox tool files
  * sb_files_tool.py
  * sb_shell_tool.py
  * sb_deploy_tool.py
  * sb_templates_tool.py
  * sb_upload_file_tool.py
  * sb_presentation_tool.py
  * sb_web_dev_tool.py

- Base class SandboxToolsBase already sets this on line 23
- Eliminates 7 lines of duplicate code
- All tools now inherit workspace_path from base

- Converted sb_upload_file_tool.py to use centralized db_helpers
  * Removed DBConnection import
  * Uses get_initialized_db() instead

backend/SIMPLIFICATION_ANALYSIS.md

@@ -1,161 +0,0 @@
-# Backend Simplification Analysis & Progress
-
-## ✅ Completed Simplifications
-
-### 1. Fixed Duplicate TemplateService Names (COMPLETED)
-- **Problem**: Two classes named `TemplateService` in different files
-  - `template_service.py` - Main CRUD service (677 lines)
-  - `services/marketplace_service.py` - Pagination wrapper (274 lines)
-- **Solution**: Renamed `marketplace_service.py::TemplateService` → `MarketplaceService`
-- **Impact**: Eliminated naming confusion, clearer code organization
-
-### 2. Created Centralized DB Dependency Helper (COMPLETED)
-- **Problem**: 100+ `DBConnection()` instantiations scattered across 53 files
-- **Solution**: Created `core/utils/db_helpers.py` with reusable dependencies:
-  - `get_db()` - FastAPI dependency for DB connection
-  - `get_db_client()` - FastAPI dependency for Supabase client
-  - `get_initialized_db()` - For module-level usage
-- **Impact**: Provides single source of truth for DB initialization
-- **Files Updated**:
-  - `services/api_keys_api.py` - Now uses `get_db()` dependency
-  - `templates/services/marketplace_service.py` - Now uses `get_initialized_db()`
-
-## 📊 Identified Opportunities for Future Simplification
-
-### 3. Module Initialization Pattern (9 modules)
-**Current State**: 9 modules have `def initialize(database: DBConnection)` setting global `db` variables:
-- `templates/api.py`
-- `triggers/api.py`
-- `composio_integration/api.py`
-- `sandbox/api.py`
-- `versioning/api.py`
-- `pipedream/api.py`
-- `credentials/api.py`
-- `core_utils.py`
-- `services/redis.py`
-
-**Recommendation**: 
-- Standardize initialization pattern
-- Consider FastAPI lifespan events for startup/shutdown
-- Use dependency injection instead of global variables
-
-### 4. Large Files Needing Breakdown
-
-#### agent_creation_tool.py (1,712 lines)
-- **Issue**: Single monolithic class handling all agent CRUD operations
-- **Recommendation**: Extract sub-services:
-  - Agent validation service
-  - Workflow sync service  
-  - Tool configuration service
-  - Icon/metadata service
-
-#### response_processor.py (2,017 lines)
-- **Recommendation**: Break into focused processors:
-  - Text response processor
-  - Tool call processor
-  - Error handler
-  - Stream processor
-
-#### prompt.py (1,832 lines)
-- **Issue**: Contains many different prompts and prompt-building logic
-- **Recommendation**: Split by domain:
-  - Agent builder prompts
-  - System prompts
-  - Tool prompts
-  - Template prompts
-
-#### tool_groups.py (1,177 lines)
-- **Issue**: Large configuration file
-- **Recommendation**: Move to JSON/YAML config or split by tool category
-
-### 5. Large API Routers
-
-#### composio_integration/api.py (1,057 lines)
-- **Recommendation**: Split into focused routers:
-  - Authentication router
-  - Toolkit router
-  - Trigger router
-  - Connected accounts router
-
-#### billing/api.py (936 lines)
-- **Recommendation**: Split into:
-  - Subscription router
-  - Payment router
-  - Credit router
-  - Webhook router
-
-#### triggers/api.py (923 lines)
-- **Recommendation**: Split into:
-  - Trigger management router
-  - Execution router
-  - Provider router
-
-### 6. Tool Organization (35 tool files)
-
-**Current State**: 17 sandbox tools (sb_*) with similar patterns:
-- All inherit from `SandboxToolsBase`
-- Many set `self.workspace_path = "/workspace"` redundantly
-- Common patterns for `_ensure_sandbox()` calls
-
-**Recommendations**:
-- Move `workspace_path` to base class
-- Extract common helper methods to base class
-- Consider grouping related tools into modules:
-  - `tools/sandbox/` - All sb_* tools
-  - `tools/search/` - Search-related tools
-  - `tools/agent_builder/` - Already done!
-
-### 7. run.py (921 lines) vs agent_runs.py (871 lines)
-
-**Overlap Analysis**:
-- `run.py` - CLI/background agent execution with tool initialization
-- `agent_runs.py` - FastAPI routes for agent run endpoints
-- **Potential**: Extract shared tool initialization logic
-
-## 📈 Metrics
-
-### Code Reduction Achieved
-- **Previous refactoring**: ~450 lines of duplicate agent handling eliminated
-- **This session**: 
-  - Fixed naming conflicts (MarketplaceService)
-  - Created reusable DB helpers
-  - Documented 100+ DB instantiations for future cleanup
-
-### Files Modified This Session
-1. `templates/services/marketplace_service.py` - Renamed class, added DB helper
-2. `templates/api.py` - Updated imports for new class name
-3. `services/api_keys_api.py` - Uses new DB helper
-4. `utils/db_helpers.py` - NEW: Centralized DB dependencies
-
-## 🎯 Priority Recommendations
-
-### High Priority (Do Next)
-1. **Standardize DB initialization** across all 9 modules using new helpers
-2. **Break down agent_creation_tool.py** into focused services
-3. **Split large API routers** (composio, billing, triggers) into sub-routers
-
-### Medium Priority
-4. Extract common sandbox tool patterns to base class
-5. Split response_processor.py by responsibility
-6. Convert tool_groups.py to JSON/YAML config
-
-### Low Priority (Nice to Have)
-7. Organize tools into subdirectories by category
-8. Extract shared logic between run.py and agent_runs.py
-9. Split prompt.py by domain
-
-## 🔍 Technical Debt Identified
-
-1. **100+ DBConnection() instantiations** - Should use centralized dependency
-2. **9 different initialize() patterns** - Should standardize
-3. **Redundant `self.workspace_path` settings** - Should be in base class
-4. **Large monolithic files** (>900 lines) - Harder to maintain and test
-5. **Mixed concerns in routers** - API endpoints mixed with business logic
-
-## 📝 Notes
-
-- All changes are backward compatible
-- New `db_helpers.py` provides migration path without breaking existing code
-- Previous refactoring (AgentLoader, utils extraction) was highly successful
-- System is now more maintainable with clear patterns emerging
-

backend/core/tools/sb_deploy_tool.py

@@ -13,7 +13,6 @@ class SandboxDeployTool(SandboxToolsBase):
 
     def __init__(self, project_id: str, thread_manager: ThreadManager):
         super().__init__(project_id, thread_manager)
-        self.workspace_path = "/workspace"  # Ensure we're always operating in /workspace
         self.cloudflare_api_token = os.getenv("CLOUDFLARE_API_TOKEN")
 
     def clean_path(self, path: str) -> str:

backend/core/tools/sb_files_tool.py

@@ -17,7 +17,6 @@ class SandboxFilesTool(SandboxToolsBase):
     def __init__(self, project_id: str, thread_manager: ThreadManager):
         super().__init__(project_id, thread_manager)
         self.SNIPPET_LINES = 4  # Number of context lines to show around edits
-        self.workspace_path = "/workspace"  # Ensure we're always operating in /workspace
 
     def clean_path(self, path: str) -> str:
         """Clean and normalize a path to be relative to /workspace"""

backend/core/tools/sb_presentation_tool.py

@@ -16,7 +16,6 @@ class SandboxPresentationTool(SandboxToolsBase):
     
     def __init__(self, project_id: str, thread_manager: ThreadManager):
         super().__init__(project_id, thread_manager)
-        self.workspace_path = "/workspace"
         self.presentations_dir = "presentations"
 
 

backend/core/tools/sb_shell_tool.py

@@ -14,7 +14,6 @@ class SandboxShellTool(SandboxToolsBase):
     def __init__(self, project_id: str, thread_manager: ThreadManager):
         super().__init__(project_id, thread_manager)
         self._sessions: Dict[str, str] = {}  # Maps session names to session IDs
-        self.workspace_path = "/workspace"  # Ensure we're always operating in /workspace
 
     async def _ensure_session(self, session_name: str = "default") -> str:
         """Ensure a session exists and return its ID."""

backend/core/tools/sb_templates_tool.py

@@ -13,7 +13,6 @@ class SandboxTemplatesTool(SandboxToolsBase):
 
     def __init__(self, project_id: str, thread_manager: ThreadManager):
         super().__init__(project_id, thread_manager)
-        self.workspace_path = "/workspace"
         self.local_templates_dir = "/opt/templates"
         self.local_manifest = f"{self.local_templates_dir}/manifest.json"
         self.remote_manifest_url = os.getenv("TEMPLATES_MANIFEST_URL")

backend/core/tools/sb_upload_file_tool.py

@@ -9,7 +9,6 @@ from pathlib import Path
 from core.agentpress.tool import ToolResult, openapi_schema
 from core.sandbox.tool_base import SandboxToolsBase
 from core.agentpress.thread_manager import ThreadManager
-from core.services.supabase import DBConnection
 from core.utils.logger import logger
 from core.utils.config import config
 
@@ -17,8 +16,8 @@ from core.utils.config import config
 class SandboxUploadFileTool(SandboxToolsBase):
     def __init__(self, project_id: str, thread_manager: ThreadManager):
         super().__init__(project_id, thread_manager)
-        self.workspace_path = "/workspace"
-        self.db = DBConnection()
+        from core.utils.db_helpers import get_initialized_db
+        self.db = get_initialized_db()
         
     @openapi_schema({
         "type": "function",

backend/core/tools/sb_web_dev_tool.py

@@ -24,7 +24,6 @@ class SandboxWebDevTool(SandboxToolsBase):
         super().__init__(project_id, thread_manager)
         self.thread_id = thread_id
         self._sessions: Dict[str, str] = {}
-        self.workspace_path = self.WORKSPACE_PATH
 
     async def _ensure_session(self, session_name: str = "default") -> str:
         if session_name not in self._sessions: