feat: expand system_prompt_template with instruction on agent creation

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/openjarvis/agents/manager.py

@@ -488,6 +488,15 @@ class AgentManager:
         if overrides:
             config.update(overrides)
         agent_type = config.pop("agent_type", "monitor_operative")
+
+        # Expand system_prompt_template with instruction
+        prompt_tpl = config.pop("system_prompt_template", "")
+        if prompt_tpl:
+            instruction = config.get("instruction", "")
+            config["system_prompt"] = prompt_tpl.format(
+                instruction=instruction or "(No specific instruction provided)",
+            )
+
         return self.create_agent(name=name, agent_type=agent_type, config=config)
 
     # ── Message queue ─────────────────────────────────────────────

tests/agents/test_template_prompts.py

@@ -0,0 +1,40 @@
+"""Tests for system_prompt_template expansion in agent creation."""
+
+from __future__ import annotations
+
+from openjarvis.agents.manager import AgentManager
+
+
+def test_create_from_template_expands_system_prompt(tmp_path):
+    """system_prompt_template should be expanded with the instruction."""
+    mgr = AgentManager(db_path=str(tmp_path / "test.db"))
+    agent = mgr.create_from_template(
+        "research_monitor",
+        "Test Agent",
+        overrides={"instruction": "Monitor AI safety papers"},
+    )
+    config = agent["config"]
+    # system_prompt should contain the expanded instruction
+    assert "Monitor AI safety papers" in config.get("system_prompt", "")
+    # system_prompt_template should NOT be in the stored config
+    assert "system_prompt_template" not in config
+    mgr.close()
+
+
+def test_create_from_template_without_instruction(tmp_path):
+    """Template with no instruction should still have a system_prompt."""
+    mgr = AgentManager(db_path=str(tmp_path / "test.db"))
+    agent = mgr.create_from_template("research_monitor", "Test Agent")
+    config = agent["config"]
+    assert "system_prompt" in config
+    assert len(config["system_prompt"]) > 100  # non-trivial prompt
+    mgr.close()
+
+
+def test_create_from_template_preserves_icon(tmp_path):
+    """Template icon field should be preserved in config."""
+    mgr = AgentManager(db_path=str(tmp_path / "test.db"))
+    agent = mgr.create_from_template("research_monitor", "Test Agent")
+    config = agent["config"]
+    assert config.get("icon") == "🔬"
+    mgr.close()