fix: follow soul.md more closely (#1434)

* Agents: honor SOUL.md persona guidance

* fix: harden SOUL.md detection (#1434) (thanks @neooriginal)

---------

Co-authored-by: Peter Steinberger <steipete@gmail.com>

CHANGELOG.md

@@ -33,6 +33,7 @@ Docs: https://docs.clawd.bot
 - Agents: make OpenAI sessions image-sanitize-only; gate tool-id/repair sanitization by provider.
 - Doctor: honor CLAWDBOT_GATEWAY_TOKEN for auth checks and security audit token reuse. (#1448) Thanks @azade-c.
 - Agents: make tool summaries more readable and only show optional params when set.
+- Agents: honor SOUL.md guidance even when the file is nested or path-qualified. (#1434) Thanks @neooriginal.
 - CLI: prefer `~` for home paths in output.
 - Mattermost (plugin): enforce pairing/allowlist gating, keep @username targets, and clarify plugin-only docs. (#1428) Thanks @damoahdominic.
 - Agents: centralize transcript sanitization in the runner; keep <final> tags and error turns intact.

src/agents/system-prompt.test.ts

@@ -237,6 +237,20 @@ describe("buildAgentSystemPrompt", () => {
     expect(prompt).toContain("Bravo");
   });
 
+  it("adds SOUL guidance when a soul file is present", () => {
+    const prompt = buildAgentSystemPrompt({
+      workspaceDir: "/tmp/clawd",
+      contextFiles: [
+        { path: "./SOUL.md", content: "Persona" },
+        { path: "dir\\SOUL.md", content: "Persona Windows" },
+      ],
+    });
+
+    expect(prompt).toContain(
+      "If SOUL.md is present, embody its persona and tone. Avoid stiff, generic replies; follow its guidance unless higher-priority instructions override it.",
+    );
+  });
+
   it("summarizes the message tool when available", () => {
     const prompt = buildAgentSystemPrompt({
       workspaceDir: "/tmp/clawd",

src/agents/system-prompt.ts

@@ -517,12 +517,18 @@ export function buildAgentSystemPrompt(params: {
 
   const contextFiles = params.contextFiles ?? [];
   if (contextFiles.length > 0) {
+    const hasSoulFile = contextFiles.some((file) => {
+      const normalizedPath = file.path.trim().replace(/\\/g, "/");
+      const baseName = normalizedPath.split("/").pop() ?? normalizedPath;
+      return baseName.toLowerCase() === "soul.md";
+    });
+    lines.push("# Project Context", "", "The following project context files have been loaded:");
+    if (hasSoulFile) {
       lines.push(
-      "# Project Context",
+        "If SOUL.md is present, embody its persona and tone. Avoid stiff, generic replies; follow its guidance unless higher-priority instructions override it.",
-      "",
-      "The following project context files have been loaded:",
-      "",
       );
+    }
+    lines.push("");
     for (const file of contextFiles) {
       lines.push(`## ${file.path}`, "", file.content, "");
     }