style: satisfy the black gate that was failing the Tests workflow

The Tests workflow was red on every OS and Python version for one reason:
`black --check` found 28 unformatted files. Part predates this branch (the
tui_v3 screens, core/api.py, core/index0.py); part is mine from this session.

Formatting only — verified rather than assumed, because a formatter touching
363 files is exactly where an unnoticed behaviour change would hide:

  - 1223 Python tests pass, unchanged
  - regenerating the fixtures after reformatting the generator produces
    byte-identical output, so no hashed value moved
  - differential fuzz: no divergences

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
Claude-Session: https://claude.ai/code/session_01Vtx94nXDmNgXEeThUZP4QN

src/tests/test_archive_from_retrieve.py

@@ -15,7 +15,9 @@ from seedpass.core.config_manager import ConfigManager
 
 
 class FakePasswordGenerator:
-    def generate_password(self, length: int, index: int, gen_version: int = 1) -> str:  # noqa: D401
+    def generate_password(
+        self, length: int, index: int, gen_version: int = 1
+    ) -> str:  # noqa: D401
         return "pw"
 
 

src/tests/test_custom_fields_display.py

@@ -7,7 +7,9 @@ sys.path.append(str(Path(__file__).resolve().parents[1]))
 
 def test_retrieve_entry_shows_custom_fields(monkeypatch, capsys, password_manager):
     pm = password_manager
-    pm.password_generator = SimpleNamespace(generate_password=lambda l, i, gen_version=1: "pw")
+    pm.password_generator = SimpleNamespace(
+        generate_password=lambda l, i, gen_version=1: "pw"
+    )
     pm.nostr_client = SimpleNamespace()
 
     pm.entry_manager.add_entry(

src/tests/test_delta_merge.py

@@ -520,12 +520,15 @@ def test_merged_deletion_does_not_recycle_entry_index():
         incoming = {
             "schema_version": 4,
             "entries": {
-                "2": {"kind": "password", "label": "web-c", "modified_ts": 10**10, "_deleted": True},
+                "2": {
+                    "kind": "password",
+                    "label": "web-c",
+                    "modified_ts": 10**10,
+                    "_deleted": True,
+                },
             },
         }
-        merged = merge_index_payloads(
-            vault.load_index(), incoming, source_tag="remote"
-        )
+        merged = merge_index_payloads(vault.load_index(), incoming, source_tag="remote")
         assert "2" not in merged["entries"]
         assert merged["_sync_meta"]["next_index"] == 3
         vault.save_index(merged)

src/tests/test_entropy_integrity.py

@@ -112,9 +112,7 @@ V1_VECTORS = [
 
 def _generator(policy: PasswordPolicy) -> PasswordGenerator:
     seed = Bip39SeedGenerator(TEST_MNEMONIC).Generate()
-    return PasswordGenerator(
-        _SeedDeriver(), TEST_MNEMONIC, BIP85(seed), policy=policy
-    )
+    return PasswordGenerator(_SeedDeriver(), TEST_MNEMONIC, BIP85(seed), policy=policy)
 
 
 # --------------------------------------------------------------------------
@@ -422,9 +420,7 @@ def test_entry_with_gen_version_2_derives_v2():
     pm = _manager_with(pg)
     entry = {"length": 16, "gen_version": CURRENT_PASSWORD_GEN_VERSION}
     got = PasswordManager._generate_password_for_entry(pm, entry, 3)
-    assert got == pg.generate_password(
-        16, 3, gen_version=CURRENT_PASSWORD_GEN_VERSION
-    )
+    assert got == pg.generate_password(16, 3, gen_version=CURRENT_PASSWORD_GEN_VERSION)
     assert got != pg.generate_password(16, 3, gen_version=1)
 
 

src/tests/test_manager_add_password.py

@@ -17,7 +17,9 @@ from constants import DEFAULT_PASSWORD_LENGTH
 
 
 class FakePasswordGenerator:
-    def generate_password(self, length: int, index: int, gen_version: int = 1) -> str:  # noqa: D401
+    def generate_password(
+        self, length: int, index: int, gen_version: int = 1
+    ) -> str:  # noqa: D401
         return f"pw-{index}-{length}"
 
 

src/tests/test_manager_checksum_backup.py

@@ -35,7 +35,9 @@ def test_handle_verify_checksum_success(monkeypatch, tmp_path, capsys):
     chk_file.write_text("abc")
     monkeypatch.setattr("seedpass.core.manager.SCRIPT_CHECKSUM_FILE", chk_file)
     monkeypatch.setattr(
-        type(pm), "_script_checksum_status", lambda self: (True, tmp_path / "seedpass.py")
+        type(pm),
+        "_script_checksum_status",
+        lambda self: (True, tmp_path / "seedpass.py"),
     )
     pm.handle_verify_checksum()
     assert "Checksum verification passed." in capsys.readouterr().out
@@ -47,7 +49,9 @@ def test_handle_verify_checksum_failure(monkeypatch, tmp_path, capsys):
     chk_file.write_text("xyz")
     monkeypatch.setattr("seedpass.core.manager.SCRIPT_CHECKSUM_FILE", chk_file)
     monkeypatch.setattr(
-        type(pm), "_script_checksum_status", lambda self: (False, tmp_path / "seedpass.py")
+        type(pm),
+        "_script_checksum_status",
+        lambda self: (False, tmp_path / "seedpass.py"),
     )
     pm.handle_verify_checksum()
     assert "Checksum verification failed" in capsys.readouterr().out
@@ -61,7 +65,9 @@ def test_handle_verify_checksum_target_mismatch(monkeypatch, tmp_path, capsys):
     chk_file.write_text("abc")
     monkeypatch.setattr("seedpass.core.manager.SCRIPT_CHECKSUM_FILE", chk_file)
     monkeypatch.setattr(
-        type(pm), "_script_checksum_status", lambda self: (None, tmp_path / "seedpass.py")
+        type(pm),
+        "_script_checksum_status",
+        lambda self: (None, tmp_path / "seedpass.py"),
     )
     pm.handle_verify_checksum()
     out = capsys.readouterr().out
@@ -74,7 +80,9 @@ def test_handle_verify_checksum_missing(monkeypatch, tmp_path, capsys):
     missing = tmp_path / "absent.txt"
     monkeypatch.setattr("seedpass.core.manager.SCRIPT_CHECKSUM_FILE", missing)
     monkeypatch.setattr(
-        type(pm), "_script_checksum_status", lambda self: (True, tmp_path / "seedpass.py")
+        type(pm),
+        "_script_checksum_status",
+        lambda self: (True, tmp_path / "seedpass.py"),
     )
     pm.handle_verify_checksum()
     note = pm.notifications.get_nowait()

src/tests/test_manager_list_entries.py

@@ -138,7 +138,9 @@ def test_show_entry_details_by_index(monkeypatch):
         monkeypatch.setattr(
             "seedpass.core.manager.confirm_action", lambda *a, **k: False
         )
-        pm.password_generator = SimpleNamespace(generate_password=lambda l, i, gen_version=1: "pw123")
+        pm.password_generator = SimpleNamespace(
+            generate_password=lambda l, i, gen_version=1: "pw123"
+        )
         monkeypatch.setattr(pm, "notify", lambda *a, **k: None)
 
         pm.show_entry_details_by_index(index)
@@ -177,7 +179,9 @@ def _detail_common(monkeypatch, pm):
     monkeypatch.setattr("seedpass.core.manager.timed_input", lambda *a, **k: "b")
     monkeypatch.setattr("seedpass.core.manager.time.sleep", lambda *a, **k: None)
     monkeypatch.setattr(pm, "notify", lambda *a, **k: None)
-    pm.password_generator = SimpleNamespace(generate_password=lambda l, i, gen_version=1: "pw123")
+    pm.password_generator = SimpleNamespace(
+        generate_password=lambda l, i, gen_version=1: "pw123"
+    )
     called = []
     monkeypatch.setattr(pm, "_entry_actions_menu", lambda *a, **k: called.append(True))
     return called
@@ -295,7 +299,9 @@ def test_show_entry_details_sensitive(monkeypatch, capsys, entry_type):
     with TemporaryDirectory() as tmpdir:
         tmp_path = Path(tmpdir)
         pm, entry_mgr = _setup_manager(tmp_path)
-        pm.password_generator = SimpleNamespace(generate_password=lambda l, i, gen_version=1: "pw123")
+        pm.password_generator = SimpleNamespace(
+            generate_password=lambda l, i, gen_version=1: "pw123"
+        )
 
         monkeypatch.setattr(
             "seedpass.core.manager.confirm_action", lambda *a, **k: True

src/tests/test_manager_workflow.py

@@ -13,7 +13,9 @@ from seedpass.core.config_manager import ConfigManager
 
 
 class FakePasswordGenerator:
-    def generate_password(self, length: int, index: int, gen_version: int = 1) -> str:  # noqa: D401
+    def generate_password(
+        self, length: int, index: int, gen_version: int = 1
+    ) -> str:  # noqa: D401
         return f"pw-{index}-{length}"
 
 

src/tests/test_manifest_ordering.py

@@ -59,7 +59,9 @@ class FakeEvent:
 
 
 def test_order_key_prefers_published_ms():
-    with_ms = Manifest(ver=1, algo="gzip", chunks=[], published_ms=SAME_SECOND * 1000 + 900)
+    with_ms = Manifest(
+        ver=1, algo="gzip", chunks=[], published_ms=SAME_SECOND * 1000 + 900
+    )
     assert manifest_order_ms(with_ms, SAME_SECOND) == SAME_SECOND * 1000 + 900
 
 
@@ -96,8 +98,14 @@ def test_event_id_still_breaks_an_exact_millisecond_tie():
     # contents, so no party chooses the winner.
     a = FakeEvent("1111", SAME_SECOND, SAME_SECOND * 1000 + 500)
     b = FakeEvent("2222", SAME_SECOND, SAME_SECOND * 1000 + 500)
-    assert [e.id for e in _sort_manifest_events_newest_first([a, b])] == ["2222", "1111"]
-    assert [e.id for e in _sort_manifest_events_newest_first([b, a])] == ["2222", "1111"]
+    assert [e.id for e in _sort_manifest_events_newest_first([a, b])] == [
+        "2222",
+        "1111",
+    ]
+    assert [e.id for e in _sort_manifest_events_newest_first([b, a])] == [
+        "2222",
+        "1111",
+    ]
 
 
 def test_an_unparseable_manifest_orders_by_created_at_without_raising():

src/tests/test_password_notes_display.py

@@ -27,7 +27,9 @@ def test_password_notes_shown(monkeypatch, capsys):
         pm.vault = vault
         pm.entry_manager = entry_mgr
         pm.backup_manager = backup_mgr
-        pm.password_generator = SimpleNamespace(generate_password=lambda l, i, **_: "pw")
+        pm.password_generator = SimpleNamespace(
+            generate_password=lambda l, i, **_: "pw"
+        )
         pm.parent_seed = TEST_SEED
         pm.nostr_client = SimpleNamespace()
         pm.fingerprint_dir = tmp_path

src/tests/test_semantic_index.py

@@ -265,7 +265,7 @@ def test_an_index_built_before_the_fix_is_deleted_on_first_touch(tmp_path):
 
 
 def test_an_unreadable_manifest_is_not_treated_as_stale(tmp_path):
-    """"Cannot tell" must not mean "delete it"."""
+    """ "Cannot tell" must not mean "delete it"."""
     from seedpass.core.semantic_index import SemanticIndex
 
     index = SemanticIndex(tmp_path)

src/tests/test_tui_v3_parity.py

@@ -365,6 +365,7 @@ async def test_v3_action_bar_global_row_uses_correct_handlers() -> None:
         # Export/Import Data use open_palette because they need a path argument
         # Verify both labels still present
         from rich.text import Text
+
         rendered = Text.from_markup(markup).plain
         assert "Export Data" in rendered
         assert "Import Data" in rendered

src/tests/test_tui_v3_smoke.py

@@ -986,9 +986,7 @@ async def test_tui3_recover_profile_sets_success_status_before_bootstrap() -> No
         booted["fingerprint"] = fingerprint
         # Capture status text at the moment bootstrap fires
         try:
-            status_at_boot.append(
-                str(app.screen.query_one("#recover-status").render())
-            )
+            status_at_boot.append(str(app.screen.query_one("#recover-status").render()))
         except Exception:
             pass
 
@@ -1219,4 +1217,6 @@ async def test_tui3_toolbar_active_class_reflects_app_state() -> None:
         app.action_set_search_sort("label_asc")
         await pilot.pause()
         assert app.screen.query_one("#grid-sort-label_asc", Button).has_class("active")
-        assert not app.screen.query_one("#grid-sort-relevance", Button).has_class("active")
+        assert not app.screen.query_one("#grid-sort-relevance", Button).has_class(
+            "active"
+        )