Inject user profile into system prompt

README.md

@@ -126,6 +126,10 @@ You are a helpful agent. Use tools when they are useful, and answer clearly.
 Override it with the `SYSTEM_PROMPT` environment variable. Extensions can also
 append fragments to the final system prompt with `addSystemPrompt(...)`.
 
+`USER.md` is also loaded into the system prompt on every run so stable user
+preferences are available immediately. `MEMORY.md` and daily logs remain
+tool-driven rather than being injected automatically.
+
 ## Durable memory
 
 The harness keeps long-lived memory in simple markdown files:
@@ -138,6 +142,12 @@ The harness keeps long-lived memory in simple markdown files:
     YYYY-MM-DD.md
 ```
 
+The memory model is intentionally split:
+
+- `USER.md` is always injected into the system prompt
+- `MEMORY.md` is available through tools when broader durable context is useful
+- `daily/` stays tool-driven for episodic notes
+
 The model can choose to use:
 
 - `memory_read` — read `MEMORY.md` or `USER.md`

src/index.ts

@@ -27,6 +27,13 @@ const promptFragments = [
 const sessionStore = new SessionStore(resolve(cwd, ".harness", "session.json"));
 const memoryStore = new MemoryStore(resolve(cwd, ".harness", "memory"));
 await memoryStore.ensure();
+const userProfile = await memoryStore.read("user");
+promptFragments.push(
+  [
+    "Always-on user profile from USER.md:",
+    userProfile.trim() || "# User"
+  ].join("\n")
+);
 promptFragments.push(
   [
     "You have access to durable memory tools.",