CatalogWarning duplicates hints when consumer wrappers supply catalog on rebuild

[dprada]

What — CatalogWarning duplicates a catalog hint when an integration class
passes its catalog and metadata on an args-only rebuild. This is the
constructor pattern shown in standards/SMONITOR_GUIDE.md §3.3.1.

How — With the current SMonitor checkout (0.16.0+4.gec50e9e), run:

import smonitor
from smonitor.integrations import CatalogWarning

smonitor.configure(
    profile="user",
    handlers=[],
    codes={"X-W1": {"user_message": "Original message.", "user_hint": "Suggested action."}},
)
catalog = {"warnings": {"ExampleWarning": {"code": "X-W1"}}}

class ExampleWarning(CatalogWarning):
    catalog_key = "ExampleWarning"

    def __init__(self, message=None):
        super().__init__(message, catalog=catalog, meta={})

warning = ExampleWarning()
rebuilt = type(warning)(*warning.args)
assert str(rebuilt) == str(warning)

The assertion fails: the original is Original message. Suggested action.;
the rebuild is Original message. Suggested action. Suggested action..
CatalogWarning.__init__ recognizes args-only rebuild text only when both
catalog and meta are absent. A consumer wrapper that supplies them on
every call prevents this recognition, so the already rendered text receives
the hint again.

Why — MolSysMT permits smonitor>=0.13.0. With this checkout, its
tests/_private suite has 15 failures and 788 passes under
pytest --receptor=llm -n 12: 14 warning round-trip cases and one
direct reconstruction test. The direct test also fails without xdist.
The affected warning text is visible to users and in test diagnostics.

Related: #4 fixed args-only handling for warnings whose
constructors do not supply catalog/metadata on rebuild; uibcdf/molsysmt#158
and uibcdf/molsysmt#161 are closed consumer guards that now fail again.