feat: WP-0001 + WP-0002 complete — LEVEL1 core + service interfaces

WP-0001 (Foundation & LEVEL1 Core):
- manifest model (FR-100), MD→DOCX builder (FR-200), DOCX→MD importer
  (FR-300/400), template family registry (FR-600), drift detector (FR-700),
  CLI wiring, pre-commit config, CI skeleton, regression harness

WP-0002 (Service Interfaces & Workflow Orchestration):
- REST service via FastAPI (FR-900): /health, /version, /capabilities,
  /templates, /styles, /validate, /build, /import, /compare,
  /templates/register, /workflows/{name}, /evidence/{run_id}
- Evidence & report store (FR-1400): JSON-backed, per-run, retrievable
  through all interfaces, classification (pass/warnings/failed)
- Composite workflow orchestration (FR-1300): single-file-roundtrip,
  multi-file-roundtrip, release-regression, family-switch-build
- MCP server via FastMCP (FR-1000): all tools + resources
- CLI additions: `markidocx serve`, `markidocx workflow`, `markidocx mcp`
- Interface parity tests: CLI / REST / MCP produce equivalent results

135 tests passing, ruff + mypy clean.

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

tests/test_builder.py

@@ -0,0 +1,85 @@
+"""Tests for MD→DOCX builder (FR-200, FR-501–508)."""
+
+from __future__ import annotations
+
+from pathlib import Path
+
+from markidocx.builder import build_document
+from markidocx.manifest import load_manifest
+
+
+class TestBuildDocument:
+    def test_build_produces_docx(self, tmp_project: Path) -> None:
+        manifest = load_manifest(tmp_project / "manifest.yaml")
+        result = build_document(manifest)
+        assert result.success
+        assert result.output_path.exists()
+        assert result.output_path.suffix == ".docx"
+
+    def test_build_result_has_family_and_level(self, tmp_project: Path) -> None:
+        manifest = load_manifest(tmp_project / "manifest.yaml")
+        result = build_document(manifest)
+        assert result.family == "article"
+        assert result.feature_level == "level1"
+
+    def test_build_creates_output_dir(self, tmp_path: Path) -> None:
+        (tmp_path / "doc.md").write_text("# Hello\n\nContent.", encoding="utf-8")
+        import yaml
+
+        (tmp_path / "manifest.yaml").write_text(
+            yaml.dump(
+                {
+                    "project": {"name": "Test", "feature_level": "level1", "family": "article"},
+                    "sources": [{"path": "doc.md"}],
+                    "output": {"dir": "./out/nested"},
+                }
+            )
+        )
+        manifest = load_manifest(tmp_path / "manifest.yaml")
+        result = build_document(manifest)
+        assert result.success
+        assert result.output_path.exists()
+
+    def test_build_all_families(self, tmp_path: Path) -> None:
+        import yaml
+
+        (tmp_path / "doc.md").write_text("# Hello\n\nContent.", encoding="utf-8")
+        for family in ("article", "book", "website"):
+            (tmp_path / "manifest.yaml").write_text(
+                yaml.dump(
+                    {
+                        "project": {"name": family, "feature_level": "level1", "family": family},
+                        "sources": [{"path": "doc.md"}],
+                        "output": {"dir": f"./dist/{family}"},
+                    }
+                )
+            )
+            manifest = load_manifest(tmp_path / "manifest.yaml")
+            result = build_document(manifest)
+            assert result.success, f"Build failed for family {family}"
+            assert result.output_path.exists()
+
+    def test_build_with_metadata(self, tmp_path: Path) -> None:
+        import yaml
+
+        (tmp_path / "doc.md").write_text("# Hello\n\nContent.", encoding="utf-8")
+        (tmp_path / "manifest.yaml").write_text(
+            yaml.dump(
+                {
+                    "project": {"name": "Meta Doc", "feature_level": "level1", "family": "article"},
+                    "sources": [{"path": "doc.md"}],
+                    "output": {"dir": "./dist"},
+                    "metadata": {"title": "My Title", "author": "Alice"},
+                }
+            )
+        )
+        manifest = load_manifest(tmp_path / "manifest.yaml")
+        result = build_document(manifest)
+        assert result.success
+
+    def test_build_level1_constructs(self, tmp_project: Path) -> None:
+        """Build with headings, lists, tables present in SIMPLE_MARKDOWN."""
+        manifest = load_manifest(tmp_project / "manifest.yaml")
+        result = build_document(manifest)
+        assert result.success
+        assert not result.errors