fix: skip FastMCP tests when mcp package not installed

CI doesn't install the [mcp] extra, so tests importing from
mcp.server.fastmcp fail with ModuleNotFoundError. Add skipif
markers to TestFastMCPApp and TestLifespan classes.

Also includes ruff format fix for document.py line length.

Author: pablospe

docx_editor/document.py

@@ -220,8 +220,8 @@ def search_text(self, query: str, context_chars: int = 100) -> list[dict]:
                 if pos == -1:
                     break
                 h = compute_paragraph_hash(p)
-                before = text[max(0, pos - context_chars):pos]
-                after = text[pos + len(query):pos + len(query) + context_chars]
+                before = text[max(0, pos - context_chars) : pos]
+                after = text[pos + len(query) : pos + len(query) + context_chars]
                 results.append({
                     "paragraph_ref": f"P{i + 1}#{h}",
                     "paragraph_index": i + 1,
@@ -256,7 +256,11 @@ def get_paragraph_text(self, paragraphs: list[str]) -> list[dict]:
             p = all_paragraphs[ref.index - 1]
             actual_hash = compute_paragraph_hash(p)
             if actual_hash != ref.hash:
-                results.append({"ref": ref_str, "text": None, "error": f"Hash mismatch: expected {ref.hash}, got {actual_hash}"})
+                results.append({
+                    "ref": ref_str,
+                    "text": None,
+                    "error": f"Hash mismatch: expected {ref.hash}, got {actual_hash}",
+                })
                 continue
             tm = build_text_map(p)
             results.append({"ref": ref_str, "text": tm.text, "error": None})

tests/test_mcp/test_server.py

@@ -1,8 +1,13 @@
 """Tests for MCP Server following TDD."""
 
 import asyncio
+import importlib.util
 from unittest.mock import MagicMock
 
+import pytest
+
+_has_mcp = bool(importlib.util.find_spec("mcp"))
+
 
 class TestMCPServer:
     """Test MCP server initialization and lifecycle."""
@@ -120,6 +125,7 @@ def test_shutdown_clears_cache(self):
         assert server.cache.size == 0
 
 
+@pytest.mark.skipif(not _has_mcp, reason="mcp package not installed")
 class TestFastMCPApp:
     """Test FastMCP application wiring."""
 
@@ -177,6 +183,7 @@ def test_main_function_exists(self):
         assert callable(main)
 
 
+@pytest.mark.skipif(not _has_mcp, reason="mcp package not installed")
 class TestLifespan:
     """Test server lifespan context manager."""