feat: implement project launch script run.sh and update README

backend/src/core/config_manager.py

@@ -124,6 +124,24 @@ class ConfigManager:
         logger.info(f"[update_global_settings][Exit] Settings updated")
     # [/DEF:update_global_settings]
 
+    # [DEF:validate_path:Function]
+    # @PURPOSE: Validates if a path exists and is writable.
+    # @PARAM: path (str) - The path to validate.
+    # @RETURN: tuple (bool, str) - (is_valid, message)
+    def validate_path(self, path: str) -> tuple[bool, str]:
+        p = os.path.abspath(path)
+        if not os.path.exists(p):
+            try:
+                os.makedirs(p, exist_ok=True)
+            except Exception as e:
+                return False, f"Path does not exist and could not be created: {e}"
+        
+        if not os.access(p, os.W_OK):
+            return False, "Path is not writable"
+            
+        return True, "Path is valid and writable"
+    # [/DEF:validate_path]
+
     # [DEF:get_environments:Function]
     # @PURPOSE: Returns the list of configured environments.
     # @RETURN: List[Environment] - List of environments.
@@ -131,6 +149,13 @@ class ConfigManager:
         return self.config.environments
     # [/DEF:get_environments]
 
+    # [DEF:has_environments:Function]
+    # @PURPOSE: Checks if at least one environment is configured.
+    # @RETURN: bool - True if at least one environment exists.
+    def has_environments(self) -> bool:
+        return len(self.config.environments) > 0
+    # [/DEF:has_environments]
+
     # [DEF:add_environment:Function]
     # @PURPOSE: Adds a new environment to the configuration.
     # @PRE: isinstance(env, Environment)