feat: add runpod environment with variables and fix workflow paths

- Add runpod env with AI_ROOT, COMFYUI_ROOT, HF_CACHE, LOGS_DIR, BIN_DIR
- Update workflows/link-comfyui to use $AI_ROOT for absolute paths
- Workflows will now link correctly from /workspace/ai/comfyui/workflows

arty.yml

@@ -70,6 +70,14 @@ references:
 
 # Environment profiles for selective repository management
 envs:
+  # RunPod environment variables
+  runpod:
+    AI_ROOT: /workspace/ai
+    COMFYUI_ROOT: /workspace/ComfyUI
+    HF_CACHE: /workspace/huggingface_cache
+    LOGS_DIR: /workspace/logs
+    BIN_DIR: /workspace/bin
+
   # Production: Only essential components
   prod:
     - $AI_ROOT
@@ -607,7 +615,8 @@ scripts:
     # Clear existing workflow symlinks to avoid conflicts
     find . -type l -name "*.json" -delete
 
-    SOURCE_DIR="comfyui/workflows"
+    # Absolute path to workflows from /workspace/ai
+    SOURCE_DIR="$AI_ROOT/comfyui/workflows"
 
     # Text-to-Image workflows (prefix: t2i_)
     for file in "$SOURCE_DIR/text-to-image"/*.json; do