Revise Source detail page to improve line-wrap issues.

tests/ui/test_sources_page.py

@@ -6,6 +6,7 @@ from pathlib import Path
 from uuid import uuid4
 
 import pytest
+from PIL import Image
 from sqlmodel import select
 
 from transcription.db import session_scope
@@ -20,6 +21,8 @@ from transcription.db.models import JobStatus
 from transcription.db.models import Source
 from transcription.providers.evidence import TransportEvidence
 from transcription.services.sources import SourceService
+from transcription.ui.pages.sources_page import _is_wide_narrow_image
+from transcription.ui.pages.sources_page import _resolve_source_detail_layout
 
 # --- Unit Tests for Model @property Definitions ---
 
@@ -44,6 +47,37 @@ class TestSourceModelProperties:
         assert source.latest_error_detail is None
         assert source.document_name is None
 
+    def test_wide_narrow_aspect_detection_threshold(self):
+        assert _is_wide_narrow_image(width=2200, height=1000)
+        assert not _is_wide_narrow_image(width=1800, height=1000)
+        assert not _is_wide_narrow_image(width=0, height=1000)
+
+    @pytest.mark.asyncio
+    async def test_source_detail_layout_switches_for_wide_narrow_images(self, app_client):
+        app, _ = app_client
+        async with session_scope() as session:
+            document = Document(name="Layout test doc")
+            session.add(document)
+            await session.flush()
+
+            wide_path = app.state.settings.upload_dir / "documents" / str(document.id) / "wide-strip.png"
+            wide_path.parent.mkdir(parents=True, exist_ok=True)
+            Image.new("RGB", (2400, 800), color=(255, 255, 255)).save(wide_path, format="PNG")
+
+            source = Source(
+                document_id=document.id,
+                page_number=1,
+                upload_name="wide-strip.png",
+                filename="wide-strip.png",
+                file_path=wide_path.relative_to(app.state.settings.upload_dir).as_posix(),
+                file_hash="c" * 64,
+                file_size_bytes=wide_path.stat().st_size,
+            )
+            session.add(source)
+            await session.commit()
+
+        assert _resolve_source_detail_layout(source=source, settings=app.state.settings) == "wide_narrow"
+
     @pytest.mark.asyncio
     async def test_source_properties_with_document_and_job_sources(self, seed_job):
         job_id = await seed_job(