instructionファイルの定義・読み込みの実装

resources/prompts/common/tool-usage.md

@@ -2,10 +2,5 @@
 
 You have access to these tools: {{ tools | join(", ") }}.
 
-Prefer the most specific tool for the job. When reading files you already
-know the path of, use the file-read tool directly instead of searching.
+Prefer the most specific tool for the job. When reading files you already know the path of, use the file-read tool directly instead of searching.
 When searching, use grep/glob primitives rather than shell pipelines.
-
-Only touch paths inside your scope. Your scope is:
-
-{{ scope.summary }}

resources/prompts/common/workspace.md

@@ -0,0 +1,2 @@
+You are operating in {{ cwd }}.
+Today is {{ date }}.