Chore: enable flake8-gettext (INT001/002/003) ruff rules

All 4 hits in documents/validators.py were f-strings inside gettext
_() calls, which resolves the string before translation and breaks
extraction (confirmed: locale .po files literally contain the raw
"{value}" placeholder as msgid text). Fixed by using %(name)s-style
placeholders with Django ValidationError's existing params= kwarg,
which was already being passed but silently unused.

pyproject.toml

@@ -232,6 +232,9 @@ extend-select = [
   "I",       # https://docs.astral.sh/ruff/rules/#isort-i
   "ICN",     # https://docs.astral.sh/ruff/rules/#flake8-import-conventions-icn
   "INP",     # https://docs.astral.sh/ruff/rules/#flake8-no-pep420-inp
+  "INT001",  # https://docs.astral.sh/ruff/rules/#flake8-gettext-int
+  "INT002",  # https://docs.astral.sh/ruff/rules/#flake8-gettext-int
+  "INT003",  # https://docs.astral.sh/ruff/rules/#flake8-gettext-int
   "ISC",     # https://docs.astral.sh/ruff/rules/#flake8-implicit-str-concat-isc
   "LOG001",  # https://docs.astral.sh/ruff/rules/#flake8-logging-log
   "LOG002",  # https://docs.astral.sh/ruff/rules/#flake8-logging-log

src/documents/validators.py

@@ -21,28 +21,32 @@ def uri_validator(value: str, allowed_schemes: set[str] | None = None) -> None:
         parts = urlparse(value)
         if not parts.scheme:
             raise ValidationError(
-                _(f"Unable to parse URI {value}, missing scheme"),
+                _("Unable to parse URI %(value)s, missing scheme"),
                 params={"value": value},
             )
         elif not parts.netloc and not parts.path:
             raise ValidationError(
-                _(f"Unable to parse URI {value}, missing net location or path"),
+                _("Unable to parse URI %(value)s, missing net location or path"),
                 params={"value": value},
             )
 
         if allowed_schemes and parts.scheme not in allowed_schemes:
             raise ValidationError(
                 _(
-                    f"URI scheme '{parts.scheme}' is not allowed. Allowed schemes: {', '.join(allowed_schemes)}",
+                    "URI scheme '%(scheme)s' is not allowed. Allowed schemes: %(allowed_schemes)s",
                 ),
-                params={"value": value, "scheme": parts.scheme},
+                params={
+                    "value": value,
+                    "scheme": parts.scheme,
+                    "allowed_schemes": ", ".join(allowed_schemes),
+                },
             )
 
     except ValidationError:
         raise
     except Exception as e:
         raise ValidationError(
-            _(f"Unable to parse URI {value}"),
+            _("Unable to parse URI %(value)s"),
             params={"value": value},
         ) from e