feat(rulebook): augment get_project with applicable_rules + MCP instructions

tests/test_mcp_tool_projects.py

@@ -41,18 +41,57 @@ async def test_list_projects_wraps_in_dict():
 async def test_get_project_enriches_with_milestone_summary():
     p = _fake_project(id=5, title="found")
     milestone_summary = [{"id": 10, "title": "MS", "task_count": 3}]
+    applicable_payload = {
+        "rules": [], "truncated": False, "subscribed_rulebooks": [],
+    }
     with patch(
         "fabledassistant.mcp.tools.projects.projects_svc.get_project",
         AsyncMock(return_value=p),
     ), patch(
         "fabledassistant.mcp.tools.projects.milestones_svc.get_project_milestone_summary",
         AsyncMock(return_value=milestone_summary),
+    ), patch(
+        "fabledassistant.mcp.tools.projects.rulebooks_svc.get_applicable_rules",
+        AsyncMock(return_value=applicable_payload),
     ):
         out = await get_project(project_id=5)
     assert out["id"] == 5
     assert out["milestone_summary"] == milestone_summary
 
 
+@pytest.mark.asyncio
+async def test_get_project_includes_applicable_rules_and_subscribed_rulebooks():
+    """The augmented get_project response includes applicable_rules and
+    subscribed_rulebooks pulled from services/rulebooks.get_applicable_rules.
+    """
+    p = _fake_project(id=3, title="Fabled Assistant")
+    milestone_summary = []
+    applicable_payload = {
+        "rules": [
+            {"id": 1, "title": "dev is home",
+             "statement": "Work directly on dev",
+             "topic_title": "git-workflow",
+             "rulebook_title": "FabledSword family"},
+        ],
+        "truncated": False,
+        "subscribed_rulebooks": [{"id": 1, "title": "FabledSword family"}],
+    }
+    with patch(
+        "fabledassistant.mcp.tools.projects.projects_svc.get_project",
+        AsyncMock(return_value=p),
+    ), patch(
+        "fabledassistant.mcp.tools.projects.milestones_svc.get_project_milestone_summary",
+        AsyncMock(return_value=milestone_summary),
+    ), patch(
+        "fabledassistant.mcp.tools.projects.rulebooks_svc.get_applicable_rules",
+        AsyncMock(return_value=applicable_payload),
+    ):
+        out = await get_project(project_id=3)
+    assert out["applicable_rules"][0]["title"] == "dev is home"
+    assert out["subscribed_rulebooks"] == [{"id": 1, "title": "FabledSword family"}]
+    assert out["applicable_rules_truncated"] is False
+
+
 @pytest.mark.asyncio
 async def test_get_project_raises_when_not_found():
     with patch(