feat(major2): run_mandate_across_bundles threads one reviewer; run_portfolio takes none [skip-docs]

Ordre 20260904T173146Z-8102814273-from-portfolio-optimiser, steg 8 av 10.

Dispatcheren faar proposal_reviewer og videresender den til hver per-base run_project.
EN gjenstand, aldri en kopi per base: dispatchen er SEKVENSIELL, saa en terminal-reviewer
komponerer. Assertert med `is`, ikke `==` - en fersk reviewer per base ville vaert en annen
gjenstand med identisk oppfoersel, som `==` paa en vanlig callable ikke kan skille (samme
identitets-leksjon test_multibase_loadbearings store-arm ble rettet til).

Doera faar sitt EGET vitne (S7a-3-regelen: hver doer som aapner en base faar sin egen
mutasjon, fordi en uvitnet kopi kan regrere alene).

run_portfolio faar INGENTING - samtidige boelger deler en terminal, som er --portfolio-
partisjonens egen grunn - og fravaeret er ASSERTERT, saa en senere "symmetri"-endring er en
roed test og ikke en stille utvidelse.

RODT foer impl: T22 (TypeError paa ukjent keyword).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

tests/test_proposal_review_loop_loadbearing.py

@@ -1455,3 +1455,49 @@ def test_the_refused_name_enters_neither_half_of_the_whitelist() -> None:
     assert set(hosting._REFUSED_BY_NAME).isdisjoint(inspect.signature(run_project).parameters)
     # ...and the parameter it corresponds to is a real one, so the refusal names a door that exists.
     assert "proposal_reviewer" in inspect.signature(run_project).parameters
+
+
+async def test_t22_the_dispatcher_threads_one_reviewer_into_every_base(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    """T22 — the multi-base dispatcher gets its OWN witness (the S7a-3 rule: every door that opens
+    a base gets its own mutation, because an unwitnessed copy can regress alone). Detach point:
+    the dispatcher stops threading it (M36).
+
+    ONE object is threaded, asserted with ``is`` and not ``==``: the dispatch is SEQUENTIAL, so a
+    single terminal reviewer composes — and a fresh reviewer per base would be a different object
+    with identical behaviour, which ``==`` on a plain callable cannot tell apart (the identity
+    lesson ``test_multibase_loadbearing``'s store arm was corrected into).
+
+    The signature arm is paired with it for the Fase-4e reason: a ``**kwargs`` recorder cannot see
+    a name ``run_project`` does not actually take."""
+    calls: list[dict[str, Any]] = []
+
+    async def _recorder(project_id: str, profile: Any = "local", **kwargs: Any) -> Any:
+        calls.append({"project_id": project_id, **kwargs})
+        raise RuntimeError("recorded")
+
+    reviewer = _RunReviewer()
+    monkeypatch.setattr(run, "run_project", _recorder)
+    with pytest.raises(RuntimeError):
+        await run.run_mandate_across_bundles(
+            Mandate(
+                objective="o",
+                approaches=(
+                    Approach(id="a", label="A", bundle_id="tunnel-hauglia"),
+                    Approach(id="b", label="B", bundle_id="veglys-fv-soer"),
+                ),
+            ),
+            (str(_EXAMPLES / "tunnel-hauglia"), str(_EXAMPLES / "veglys-fv-soer")),
+            proposal_reviewer=reviewer,
+        )
+    assert calls, "the dispatcher must have reached run_project at least once"
+    assert all(c["proposal_reviewer"] is reviewer for c in calls)
+    assert "proposal_reviewer" in inspect.signature(run_project).parameters
+
+
+def test_run_portfolio_takes_no_reviewer() -> None:
+    """The ABSENCE arm (brief § Non-Goals). Concurrent portfolio waves share one terminal, which
+    is the ``--portfolio`` partition's own reason — so a later "symmetry" edit must be a RED test,
+    not a silent widening."""
+    assert "proposal_reviewer" not in inspect.signature(run.run_portfolio).parameters