test: track the three era-corpus fixtures regression tests assert on, so CI runs them

tests/issues/regression/test_3dp_bare_textnode_headers.py

@@ -18,11 +18,11 @@
 121 corpus fixtures, it was the only remaining behavioural difference between
 ``.items`` with the legacy path and without it.
 
-CORPUS NOTE. The 20-F asserted here lives in ``tests/fixtures/parity_gate``, which
-is tracked, so this test runs in CI. Its 10-K twin (``0000927356-01-000369``) is
-in ``tests/fixtures/text_boundary_corpus``, which is gitignored — asserting on
-that one alone would make this test skip in CI while passing locally, which is how
-parity evidence was lost before. It is checked opportunistically below.
+CORPUS NOTE. Both filings asserted here live in ``tests/fixtures/parity_gate``,
+which is tracked, so this test runs in CI. The 10-K twin (``0000927356-01-000369``)
+was copied there from the gitignored ``text_boundary_corpus`` on 2026-10-02: while
+it lived only there its test skipped in CI, and a sibling test on that corpus went
+stale for five days without anyone seeing it.
 """
 import pathlib
 
@@ -33,8 +33,7 @@
 
 FIXTURES = pathlib.Path(__file__).parent.parent.parent / "fixtures"
 TRACKED_20F = FIXTURES / "parity_gate" / "20-F" / "0000928385-01-500187.html"
-IGNORED_10K = (FIXTURES / "text_boundary_corpus" / "e1_1996_2001" / "10-K"
-               / "0000927356-01-000369.html")
+TRACKED_10K = FIXTURES / "parity_gate" / "10-K" / "0000927356-01-000369.html"
 
 
 class FixtureFiling:
@@ -100,12 +99,8 @@ def test_the_20f_document_really_has_no_block_structure():
     assert not [n for n in nodes if isinstance(n, ParagraphNode)]
 
 
-@pytest.mark.skipif(
-    not IGNORED_10K.exists(),
-    reason="text_boundary_corpus is gitignored; present on developer machines only",
-)
 def test_2001_10k_finds_item_7_without_the_legacy_parser():
-    filing = FixtureFiling(IGNORED_10K, "10-K")
+    filing = FixtureFiling(TRACKED_10K, "10-K")
 
     assert TenK(filing).items == ["Item 7"]
     assert _without_legacy(TenK)(filing).items == ["Item 7"]

tests/issues/regression/test_dt1f1_item_9at.py

@@ -54,8 +54,8 @@
 
 FIXTURES = pathlib.Path(__file__).parent.parent.parent / "fixtures"
 GATE_10K = FIXTURES / "parity_gate" / "10-K" / "0001193125-10-073212.html"
-ABS_10K = (FIXTURES / "text_boundary_corpus" / "e5_2020_2026" / "10-K"
-           / "0001193125-21-101193.html")
+# Copied from the gitignored text_boundary_corpus on 2026-10-02 so this runs in CI
+ABS_10K = FIXTURES / "parity_gate" / "10-K" / "0001193125-21-101193.html"
 
 
 class FixtureFiling:
@@ -163,10 +163,6 @@ def test_the_designation_is_one_letter_and_optional():
     assert not re.fullmatch(_ITEM_SEP, "(T). Controls and Procedures")
 
 
-@pytest.mark.skipif(
-    not ABS_10K.exists(),
-    reason="text_boundary_corpus is gitignored; present on developer machines only",
-)
 def test_a_regulation_ab_sub_number_does_not_become_an_item():
     """The asset-backed issuer filing must not gain items from this change.
 

tests/issues/regression/test_dt1f1_wrapped_item_headers.py

@@ -31,12 +31,11 @@
 extraction boundary moved: verify what the section now contains before updating
 it, rather than re-recording the new number.
 
-CORPUS NOTE. The 20-F and 10-K asserted unconditionally live in
-``tests/fixtures/parity_gate``, which is tracked, so this test runs in CI. The
-2010 20-F that carries five of the eight lookups is in
-``tests/fixtures/text_boundary_corpus``, which is gitignored — anchoring only on
-that one would pass locally and skip in CI, which is how parity evidence has
-been lost here before. It is checked opportunistically at the bottom.
+CORPUS NOTE. Every filing asserted here lives in ``tests/fixtures/parity_gate``,
+which is tracked, so this test runs in CI. The 2010 20-F that carries five of the
+eight lookups was copied there from the gitignored ``text_boundary_corpus`` on
+2026-10-02, after its test skipped in CI and went stale for five days (#1361
+changed three item lengths and only the CI-visible pins were updated).
 """
 import pathlib
 import re
@@ -50,8 +49,7 @@
 FIXTURES = pathlib.Path(__file__).parent.parent.parent / "fixtures"
 TRACKED_20F = FIXTURES / "parity_gate" / "20-F" / "0001062993-16-008650.html"
 TRACKED_10K = FIXTURES / "parity_gate" / "10-K" / "0000950153-99-001234.html"
-IGNORED_20F = (FIXTURES / "text_boundary_corpus" / "e3_2009_2014" / "20-F"
-               / "0001144204-10-017467.html")
+WRAPPED_20F = FIXTURES / "parity_gate" / "20-F" / "0001144204-10-017467.html"
 
 
 class FixtureFiling:
@@ -186,10 +184,6 @@ def test_a_bare_item_number_is_not_read_as_a_page_number():
     )
 
 
-@pytest.mark.skipif(
-    not IGNORED_20F.exists(),
-    reason="text_boundary_corpus is gitignored; present on developer machines only",
-)
 def test_2010_20f_resolves_all_eight_wrapped_items_without_the_legacy_parser():
     """The filing this defect was measured on.
 
@@ -198,7 +192,7 @@ def test_2010_20f_resolves_all_eight_wrapped_items_without_the_legacy_parser():
     line width. Five of these (5, 6, 11, 12, 15) are on the dt1f.1 work list;
     16D-16F came with them.
     """
-    filing = FixtureFiling(IGNORED_20F, "20-F")
+    filing = FixtureFiling(WRAPPED_20F, "20-F")
     report = _without_legacy(TwentyF)(filing)
 
     # Items 5 and 6 grew by 150 and 20 characters when the fast_table 8-column cap

tests/meta/test_section_parity_ratchet.py

@@ -237,6 +237,12 @@
         # item-separator fix was measured on (TenK.items == ['Item 8'] before
         # it), so it guards two fixes at once and must stay measurable.
         ("10-K", "0001376474-16-000635"),
+        # Copied into parity_gate on 2026-10-02 because regression tests assert
+        # on them (3dp, dt1f1 9A(T), dt1f1 wrapped headers) and, read from the
+        # era corpus, those tests skipped in CI; one went stale for five days.
+        ("10-K", "0000927356-01-000369"),
+        ("10-K", "0001193125-21-101193"),
+        ("20-F", "0001144204-10-017467"),
     }
 )