test: fix v3 branding drift, add reconcile CLI + registry coverage

GUI/lang-pack tests were asserting against pre-v3 strings ("Data
Cleaning Mastery", "Maestría en limpieza…") that the brand refresh
replaced with "UNALOGIX DataTools" + "Clean. Normalize. Transform."
Updated assertions to the current copy and switched the findings
panel tests to the redesigned flat-list layout (per-finding "Open
Tool →" buttons instead of per-tool expanders).

New coverage:
- tests/test_cli_reconcile.py (13) — preview/apply, tolerance flags,
  sign inversion, key flags, error paths, Excel input.
- tests/test_tools_registry.py (27) — unique tool_ids, page_slug →
  real file, valid sections/tiers, localized accessor fallbacks,
  explicit pins for PDF Extractor + Reconciler entries.
- tests/test_reconcile.py — one-side-empty, key-pass tagging,
  additional validation cases, input-DataFrame immutability.
- tests/gui/test_smoke.py — PAGE_SLUGS now includes 10_PDF_Extractor
  and 11_Reconciler in both en/es.
- tests/gui/test_workflows.py — TestPdfExtractorWorkflow and
  TestReconcilerWorkflow render checks.

Net: 2317 passed → 2418 passed, 0 failures.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/gui/test_workflows.py

@@ -152,6 +152,48 @@ class TestPipelineRunnerWorkflow:
 
 
 
+# ---------------------------------------------------------------------------
+# PDF to CSV — file-uploader-driven so we can't fully exercise the
+# scan flow through AppTest. Pin the initial render (which carries the
+# dep-status banner when deps are missing) so a future regression in
+# the dep guard shows up here.
+# ---------------------------------------------------------------------------
+
+class TestPdfExtractorWorkflow:
+    def test_page_renders_without_upload(self, app_factory):
+        app = app_factory("10_PDF_Extractor")
+        app.run()
+        assert not app.exception
+        text = collected_text(app)
+        assert "PDF to CSV" in text
+
+
+# ---------------------------------------------------------------------------
+# Reconcile Two Files — early-exits at ``st.stop()`` without both
+# uploads. Pin both the no-upload state and the title.
+# ---------------------------------------------------------------------------
+
+class TestReconcilerWorkflow:
+    def test_page_renders_without_uploads(self, app_factory):
+        app = app_factory("11_Reconciler")
+        app.run()
+        assert not app.exception
+        text = collected_text(app)
+        assert "Reconcile" in text
+
+    def test_prompts_for_both_uploads_when_empty(self, app_factory):
+        # ``st.info("Upload both files to continue.")`` fires when
+        # either side is missing; that text is the contract we test
+        # against — if the prompt disappears the user has no idea
+        # what to do next.
+        app = app_factory("11_Reconciler")
+        app.run()
+        info_messages = [i.body for i in app.info if hasattr(i, "body")]
+        assert any("Upload both files" in m for m in info_messages), (
+            f"missing 'Upload both files' prompt; got: {info_messages}"
+        )
+
+
 # ---------------------------------------------------------------------------
 # Coming-Soon pages still render (just a stub) — pinned so we know if a
 # Coming-Soon goes from "stub renders" to "import error".