fix: improve usage parsing and ignore local artifacts

.gitignore

@@ -0,0 +1,8 @@
+.DS_Store
+node_modules/
+logs/
+.easyagent/
+*.log
+1.txt
+2.txt
+edited_records.txt

src/model/client.js

@@ -29,6 +29,7 @@ async function* streamChat({ config, modelKey, messages, tools, thinkingMode, cu
     stream: true,
     stream_options: { include_usage: true },
   };
+  payload.include_usage = true;
   payload.reasoning_split = true;
   const maxTokens = computeMaxTokens(profile, currentContextTokens);
   if (maxTokens) payload.max_tokens = maxTokens;

src/utils/token_usage.js

@@ -25,4 +25,15 @@ function applyUsage(base, usage) {
   return normalized;
 }
 
-module.exports = { normalizeTokenUsage, applyUsage };
+function normalizeUsagePayload(usage) {
+  if (!usage || typeof usage !== 'object') return null;
+  const toNum = (value) => (Number.isFinite(Number(value)) ? Number(value) : 0);
+  const prompt = toNum(usage.prompt_tokens ?? usage.input_tokens ?? usage.prompt ?? usage.input);
+  const completion = toNum(usage.completion_tokens ?? usage.output_tokens ?? usage.completion ?? usage.output);
+  let total = toNum(usage.total_tokens ?? usage.total);
+  if (!total && (prompt || completion)) total = prompt + completion;
+  if (!prompt && !completion && !total) return null;
+  return { prompt_tokens: prompt, completion_tokens: completion, total_tokens: total };
+}
+
+module.exports = { normalizeTokenUsage, applyUsage, normalizeUsagePayload };