Parse local function_model tool wrappers

tests/test_function_model_tool_call.py

@@ -0,0 +1,29 @@
+import src.agent_tools  # noqa: F401  (break agent_tools<->tool_parsing import cycle)
+from src.tool_parsing import parse_tool_blocks, strip_tool_blocks
+
+
+def test_function_model_wrapper_runs_web_search_and_strips_markup():
+    raw = """Sure, let me check what's making headlines in Sweden today.
+
+<function_model>
+<function_call>web_search</function_call>
+<parameters>{"query": "Sweden news today July 2026"}</parameters>
+</function_model>"""
+
+    blocks = parse_tool_blocks(raw, skip_fenced=True)
+
+    assert len(blocks) == 1
+    assert blocks[0].tool_type == "web_search"
+    assert blocks[0].content == "Sweden news today July 2026"
+    assert strip_tool_blocks(raw, skip_fenced=True) == "Sure, let me check what's making headlines in Sweden today."
+
+
+def test_function_model_wrapper_with_unknown_tool_is_stripped_but_not_executed():
+    raw = """Nope.
+<function_model>
+<function_call>launch_missiles</function_call>
+<parameters>{"target": "moon"}</parameters>
+</function_model>"""
+
+    assert parse_tool_blocks(raw, skip_fenced=True) == []
+    assert strip_tool_blocks(raw, skip_fenced=True) == "Nope."