M20: stabilize production acceptance

backend/app/services/knowledge/ragcore.py

@@ -53,15 +53,15 @@ def _deduplicate_sources(sources: list[SourceCard]) -> list[SourceCard]:
 
     RAGcore document/version UUIDs change across uploads, so they are not useful
     deduplication keys. Human-visible citation identity is the normalized title,
-    section and excerpt.
+    section. Chunks from the same unsectioned document collapse into one card; distinct
+    named sections remain independently citable.
     """
-    seen: set[tuple[str, str, str]] = set()
+    seen: set[tuple[str, str]] = set()
     unique: list[SourceCard] = []
     for source in sources:
         key = (
             source.title.strip().casefold(),
             source.section.strip().casefold(),
-            " ".join(source.excerpt.split()).casefold(),
         )
         if key in seen:
             continue

backend/tests/test_knowledge.py

@@ -297,7 +297,7 @@ def test_ragcore_sources_deduplicate_reuploaded_versions_and_cap_cards(monkeypat
                 "title": "Damage procedure" if index < 2 else f"Procedure {index}",
                 "section": "Return",
                 "excerpt": (
-                    "Record visible damage before release."
+                    f"Record visible damage before release, chunk {index}."
                     if index < 2
                     else f"Unique procedure evidence {index}."
                 ),

frontend/e2e/guided-demo-full.spec.ts

@@ -53,10 +53,10 @@ test("full guided demo walkthrough, start to finish, restoring the environment a
   await test.step("step 4: handle the newly created data-quality issue", async () => {
     await expect(page).toHaveURL(/\/data-quality$/);
     await expect(page.getByRole("heading", { name: "4. Bekijk en behandel" })).toBeVisible();
-    const firstIssueLink = page.locator(".data-table tbody tr").first().locator("a");
-    await firstIssueLink.click();
+    const odometerIssue = page.getByRole("row", { name: /Afwijkende kilometerstand/ });
+    await odometerIssue.locator("a").click();
     await expect(page.getByText("Wat is er mis")).toBeVisible();
-    // The newest issue is the odometer regression this return just created.
+    // SLA ordering deliberately outranks recency, so select the issue by its rule.
     await page.getByRole("radio", { name: /Laatst bevestigde stand behouden/ }).check();
     await page.getByRole("button", { name: "Probleem oplossen" }).click();
     await expect(page.getByText(/Probleem .* opgelost/)).toBeVisible();

frontend/e2e/interactive-elements.spec.ts

@@ -60,8 +60,10 @@ test("vehicles page: status filter and attention-only checkbox both work", async
   await expect(page).toHaveURL(/attention_only=true/);
   await expect(page.getByLabel("Attention only")).toBeChecked();
   await expect(page.locator(".data-table tbody tr").first()).toBeVisible();
-  const attentionCells = await page.locator(".data-table tbody tr td:nth-child(6)").allTextContents();
-  expect(attentionCells.every((c) => c.includes("Needs attention"))).toBeTruthy();
+  const rows = page.locator(".data-table tbody tr");
+  await expect(rows.locator(".attention-flag")).toHaveCount(await rows.count());
+  const attentionReasons = await rows.locator(".attention-flag").allTextContents();
+  expect(attentionReasons.every((reason) => reason.trim().length > 0)).toBeTruthy();
 });
 
 test("vehicles page: free-text search actually filters the rendered rows", async ({ page }) => {