fix empty api key causing override

Author: OnTheThirdDay

crates/example-eventage-claw/docker-compose.yml

@@ -15,11 +15,11 @@ services:
       # Bind-mount a local directory so you can edit config and skills directly.
       - ${CLAW_DATA_DIR:-../../data/claw}:/root/.claw
     environment:
-      # LLM credentials — set in .env or environment
-      ANTHROPIC_API_KEY: ${ANTHROPIC_API_KEY:-}
-      OPENAI_API_KEY:    ${OPENAI_API_KEY:-}
-      LLM_URL:           ${LLM_URL:-https://api.anthropic.com/v1}
-      LLM_MODEL:         ${LLM_MODEL:-claude-sonnet-4-6}
+      # API keys: only passed to container when set in .env (no empty-string override)
+      - ANTHROPIC_API_KEY
+      - OPENAI_API_KEY
+      - LLM_URL
+      - LLM_MODEL
     # To also run the live replay UI:
     #   ports: ["3000:3000", "4567:4567"]
     #   command: ["--no-tui", "--http-port", "3000", "--replay"]

crates/example-eventage-claw/src/config.rs

@@ -209,17 +209,17 @@ impl ClawConfig {
             ClawConfig::default()
         };
 
-        // Environment variable overrides
+        // Environment variable overrides (only apply when non-empty)
         if let Ok(k) =
             std::env::var("ANTHROPIC_API_KEY").or_else(|_| std::env::var("OPENAI_API_KEY"))
         {
-            config.api_key = k;
+            if !k.is_empty() { config.api_key = k; }
         }
         if let Ok(url) = std::env::var("LLM_URL") {
-            config.llm_url = url;
+            if !url.is_empty() { config.llm_url = url; }
         }
         if let Ok(m) = std::env::var("LLM_MODEL") {
-            config.model = m;
+            if !m.is_empty() { config.model = m; }
         }
 
         // Ensure at least one group exists