fix(context): fix diagnostics overwrites

Author: sudo-tee

lua/opencode/config.lua

@@ -149,7 +149,7 @@ M.defaults = {
       enabled = false,
     },
     diagnostics = {
-      enabled = false,
+      enabled = true,
       info = false,
       warning = true,
       error = true,

lua/opencode/context.lua

@@ -71,7 +71,9 @@ function M.get_diagnostics(buf)
     return nil
   end
 
-  local diagnostic_conf = config.context and state.current_context_config.diagnostics or config.context.diagnostics
+  local current_conf = vim.tbl_get(state, 'current_context_config', 'diagnostics') or {}
+  local global_conf = vim.tbl_get(config, 'context', 'diagnostics') or {}
+  local diagnostic_conf = vim.tbl_deep_extend('force', global_conf, current_conf) or {}
 
   local severity_levels = {}
   if diagnostic_conf.error then