fix(env): restore multi-key rotation for SCRAPECREATORS_API_KEY

Originally added in #268 to spread load across free-tier accounts when
SCRAPECREATORS_API_KEY is set to a comma-separated list. The 7-line block
was inadvertently dropped during the v3.0.6 consolidation (d14814a) even
though the changelog still advertised the feature. Re-apply the same
random.choice rotation in get_config() so user-facing behavior matches
the documented contract. Closes #287.

Co-authored-by: Eric Oberhofer <eric@oberhofer.io>

skills/last30days/scripts/lib/env.py

@@ -352,6 +352,15 @@ def get_config() -> dict[str, Any]:
         if legacy:
             config['SCRAPECREATORS_API_KEY'] = legacy
 
+    # Multi-key rotation: comma-separated SCRAPECREATORS_API_KEY round-robins
+    # via random.choice per run. Originally added in #268, accidentally dropped
+    # in v3.0.6, restored here.
+    sc_key_raw = config.get('SCRAPECREATORS_API_KEY') or ''
+    if ',' in sc_key_raw:
+        import random
+        sc_keys = [k.strip() for k in sc_key_raw.split(',') if k.strip()]
+        config['SCRAPECREATORS_API_KEY'] = random.choice(sc_keys) if sc_keys else ''
+
     # Track which config source was used (highest-priority file source wins
     # the label; keychain is only reported when nothing else is configured).
     if project_env_path: