fix(agents): default agent dir to multi-agent path

docs/configuration.md

@@ -105,7 +105,7 @@ Legacy agent dir (pre multi-agent):
 
 Overrides:
 - OAuth dir (legacy import only): `CLAWDBOT_OAUTH_DIR`
-- Agent dir (legacy/default agent only): `CLAWDBOT_AGENT_DIR` (preferred), `PI_CODING_AGENT_DIR` (legacy)
+- Agent dir (default agent root override): `CLAWDBOT_AGENT_DIR` (preferred), `PI_CODING_AGENT_DIR` (legacy)
 
 On first use, Clawdbot imports `oauth.json` entries into `auth-profiles.json`.
 
@@ -1023,7 +1023,7 @@ Notes:
   `google-generative-ai`
 - Use `authHeader: true` + `headers` for custom auth needs.
 - Override the agent config root with `CLAWDBOT_AGENT_DIR` (or `PI_CODING_AGENT_DIR`)
-  if you want `models.json` stored elsewhere.
+  if you want `models.json` stored elsewhere (default: `~/.clawdbot/agents/main/agent`).
 
 ### `session`
 

src/agents/agent-paths.test.ts

@@ -0,0 +1,58 @@
+import fs from "node:fs/promises";
+import os from "node:os";
+import path from "node:path";
+
+import { afterEach, describe, expect, it } from "vitest";
+
+import { resolveClawdbotAgentDir } from "./agent-paths.js";
+
+describe("resolveClawdbotAgentDir", () => {
+  const previousStateDir = process.env.CLAWDBOT_STATE_DIR;
+  const previousAgentDir = process.env.CLAWDBOT_AGENT_DIR;
+  const previousPiAgentDir = process.env.PI_CODING_AGENT_DIR;
+  let tempStateDir: string | null = null;
+
+  afterEach(async () => {
+    if (tempStateDir) {
+      await fs.rm(tempStateDir, { recursive: true, force: true });
+      tempStateDir = null;
+    }
+    if (previousStateDir === undefined) {
+      delete process.env.CLAWDBOT_STATE_DIR;
+    } else {
+      process.env.CLAWDBOT_STATE_DIR = previousStateDir;
+    }
+    if (previousAgentDir === undefined) {
+      delete process.env.CLAWDBOT_AGENT_DIR;
+    } else {
+      process.env.CLAWDBOT_AGENT_DIR = previousAgentDir;
+    }
+    if (previousPiAgentDir === undefined) {
+      delete process.env.PI_CODING_AGENT_DIR;
+    } else {
+      process.env.PI_CODING_AGENT_DIR = previousPiAgentDir;
+    }
+  });
+
+  it("defaults to the multi-agent path when no overrides are set", async () => {
+    tempStateDir = await fs.mkdtemp(path.join(os.tmpdir(), "clawdbot-agent-"));
+    process.env.CLAWDBOT_STATE_DIR = tempStateDir;
+    delete process.env.CLAWDBOT_AGENT_DIR;
+    delete process.env.PI_CODING_AGENT_DIR;
+
+    const resolved = resolveClawdbotAgentDir();
+
+    expect(resolved).toBe(path.join(tempStateDir, "agents", "main", "agent"));
+  });
+
+  it("honors CLAWDBOT_AGENT_DIR overrides", async () => {
+    tempStateDir = await fs.mkdtemp(path.join(os.tmpdir(), "clawdbot-agent-"));
+    const override = path.join(tempStateDir, "agent");
+    process.env.CLAWDBOT_AGENT_DIR = override;
+    delete process.env.PI_CODING_AGENT_DIR;
+
+    const resolved = resolveClawdbotAgentDir();
+
+    expect(resolved).toBe(path.resolve(override));
+  });
+});

src/agents/agent-paths.ts

@@ -1,14 +1,21 @@
 import path from "node:path";
 
-import { resolveConfigDir, resolveUserPath } from "../utils.js";
+import { resolveStateDir } from "../config/paths.js";
+import { DEFAULT_AGENT_ID } from "../routing/session-key.js";
+import { resolveUserPath } from "../utils.js";
 
 export function resolveClawdbotAgentDir(): string {
-  const defaultAgentDir = path.join(resolveConfigDir(), "agent");
   const override =
     process.env.CLAWDBOT_AGENT_DIR?.trim() ||
-    process.env.PI_CODING_AGENT_DIR?.trim() ||
-    defaultAgentDir;
-  return resolveUserPath(override);
+    process.env.PI_CODING_AGENT_DIR?.trim();
+  if (override) return resolveUserPath(override);
+  const defaultAgentDir = path.join(
+    resolveStateDir(),
+    "agents",
+    DEFAULT_AGENT_ID,
+    "agent",
+  );
+  return resolveUserPath(defaultAgentDir);
 }
 
 export function ensureClawdbotAgentEnv(): string {