Consolidate Odysseus agent harness and tool contracts

tests/test_explicit_personal_tool_routing.py

@@ -0,0 +1,14 @@
+from src.agent_loop import _explicitly_named_personal_tools
+
+
+def test_extracts_exact_personal_tool_names():
+    text = "Call manage_calendar once, then use manage_notes."
+    assert _explicitly_named_personal_tools(text) == {
+        "manage_calendar",
+        "manage_notes",
+    }
+
+
+def test_does_not_match_substrings_or_generic_calendar_words():
+    assert _explicitly_named_personal_tools("Show my calendar") == set()
+    assert _explicitly_named_personal_tools("xmanage_calendar_backup") == set()