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+# Story: System Prompt & Persona
+
+## User Story
+**As a** User
+**I want** the Agent to behave like a Senior Engineer and know exactly how to use its tools
+**So that** it writes high-quality code and doesn't hallucinate capabilities or refuse to edit files.
+
+## Acceptance Criteria
+*   [ ] Backend: Define a robust System Prompt constant (likely in `src-tauri/src/llm/prompts.rs`).
+*   [ ] Content: The prompt should define:
+    *   Role: "Senior Software Engineer / Agent".
+    *   Tone: Professional, direct, no fluff.
+    *   Tool usage instructions: "You have access to the local filesystem. Use `read_file` to inspect context before editing."
+    *   Workflow: "When asked to implement a feature, read relevant files first, then write."
+*   [ ] Backend: Inject this system message at the *start* of every `chat` session sent to the Provider.
+
+## Out of Scope
+*   User-editable system prompts (future story).