[Minor] Update cache key prefix to match module name

Change cache_key_prefix from 'gpt_search' to 'llm_search' to align
with the module's current name (llm_search_context).

diff --git a/lualib/llm_search_context.lua b/lualib/llm_search_context.lua
index a691de523b7659f85b92d08bb37c3ce26f423719..6a37289050a5c8ec315277e6401ee2a37bf8e664 100644 (file)
--- a/lualib/llm_search_context.lua
+++ b/lualib/llm_search_context.lua
@@ -56,7 +56,7 @@ local DEFAULTS = {
   max_results_per_query = 3,
   timeout = 5,
   cache_ttl = 3600, -- 1 hour
-  cache_key_prefix = "gpt_search",
+  cache_key_prefix = "llm_search",
   as_system = true,
   enable_expression = nil,
   disable_expression = nil,