Claude Code: Fix worker env injection - add ANTHROPIC_API_KEY and CLAUDE_API_KEY to env config

- Added CLAUDE_API_KEY to .env.example (was completely missing)
- Uncommented ANTHROPIC_API_KEY in .env.example (was commented out)
- Added both keys to utils/env_init.py _CRITICAL_DEFAULTS
- Added both keys to optional critical variables verification

This fixes worker initialization failures where API keys were not properly
propagated to the worker subprocess environment.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.env.example

@@ -133,9 +133,20 @@ OPENAI_API_KEY=
 # Leave empty here - value comes from HF Space secrets
 OPENROUTER_API_KEY=
 
+# Anthropic Claude API (used by error_handlers.py for agent responses)
+#
+# [RECOMMENDED] - Must be set as Space Repository Secret
+# Leave empty here - value comes from HF Space secrets
+ANTHROPIC_API_KEY=
+
+# Claude API alias (alternative to ANTHROPIC_API_KEY)
+#
+# [RECOMMENDED] - Must be set as Space Repository Secret
+# Leave empty here - value comes from HF Space secrets
+CLAUDE_API_KEY=
+
 # Other providers (OpenClaw reads these from the environment)
 #
-# ANTHROPIC_API_KEY=sk-ant-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
 # GOOGLE_API_KEY=AIza...
 # MISTRAL_API_KEY=mis-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
 # COHERE_API_KEY=co-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

utils/env_init.py

@@ -42,6 +42,8 @@ _CRITICAL_DEFAULTS = {
     # LLM defaults (empty - must be set for AI to work)
     "OPENAI_API_KEY": "",
     "OPENROUTER_API_KEY": "",
+    "ANTHROPIC_API_KEY": "",
+    "CLAUDE_API_KEY": "",
     "OPENCLAW_DEFAULT_MODEL": "",
 
     # HuggingFace defaults (empty - must be set for data sync to work)
@@ -192,7 +194,7 @@ def init_env() -> bool:
 
         # Step 3: Verify critical variables have values (log warnings if missing)
         _missing_critical = []
-        _optional_critical = ["HF_TOKEN", "OPENCLAW_DATASET_REPO", "OPENAI_API_KEY", "OPENROUTER_API_KEY"]
+        _optional_critical = ["HF_TOKEN", "OPENCLAW_DATASET_REPO", "OPENAI_API_KEY", "OPENROUTER_API_KEY", "ANTHROPIC_API_KEY", "CLAUDE_API_KEY"]
         for key in _optional_critical:
             if not os.environ.get(key):
                 _missing_critical.append(key)