V1 mostly complete except for some testing. Linting in the last step changed nearly every file which is why this commit is so larger.

tests/ui/test_jobs_page.py

@@ -71,3 +71,37 @@ class TestPageRendering:
 
         assert response.status_code == 200
         assert "Job not found" in response.text
+
+    def test_job_detail_page_shows_revision_editor_when_none_exists(self, app_client, seed_job):
+        """GET /ui/jobs/{job_id} renders revision editor and create action for sources with no revision."""
+        _, client = app_client
+        job_id = seed_job(
+            filename="no-revision.pdf",
+            status=JobStatus.TRANSCRIBED,
+            transcription_text="original text",
+            revision_text=None,
+        )
+
+        response = client.get(f"/ui/jobs/{job_id}")
+
+        assert response.status_code == 200
+        assert "Revision Editor" in response.text
+        assert "Create revision" in response.text
+        assert "No revision exists for this source." in response.text
+
+    def test_job_detail_page_shows_update_action_for_existing_revision(self, app_client, seed_job):
+        """GET /ui/jobs/{job_id} renders revision editor with update action when revision exists."""
+        _, client = app_client
+        job_id = seed_job(
+            filename="with-revision.pdf",
+            status=JobStatus.TRANSCRIBED,
+            transcription_text="original text",
+            revision_text="hello",
+        )
+
+        response = client.get(f"/ui/jobs/{job_id}")
+
+        assert response.status_code == 200
+        assert "Revision Editor" in response.text
+        assert "Update revision" in response.text
+        assert "hello" in response.text