feat(s2c): debatten navigerer basen i stedet for aa faa den utlevert [skip-docs]

MAJOR-3/S7a-3 gjorde utforskningen billig og lot pipelinen staa. Maalt paa K2
(630 konsepter, S7bs eget instrument, kjent-positiv-kontrollen reprodusert
eksakt FOER bruk): okf.bundle_context er 648 962 o200k-tokens og rir i TRE
kopier = 1 947 342 = 99,1 % av en kjoerings prompt-tokens.

Et premiss i maaledokumentet ble presisert foerst: de tre kopiene er tre
DEBATT-turer (proposer x2, checker x1), mens genererings-prompten er 156
tokens, fordi gen_context = debate_output or context. Det avgjorde formen -
generering trengte ingen egen soem, for aa binde `context` binder
siste-utvei-fallbacken ved konstruksjon.

run_project sender naa en PEKER (fast tekst + erklaert bundle_id + antall
konseptdokumenter i scope + stigen, O(1) i korpuset) og gir debatten de SAMME
fire verktoeyene utforskningen bruker - explore.navigator_tools gjenbrukt,
aldri en andre kopi av policyen.

Etter: 753 tokens like-for-like (samme manus, samme fire prompter, -99,96 %)
og 8 942 med en debatt som faktisk gaar stigen (-99,5 %), mot operatoerens
terskel 195 000 = 4,6 % av taket. Validert besparelse og validatorens dom er
UENDRET (850 000 NOK av 3 852 500, 2 av 5 felt paa stage 4 og 5, samme
dom-noekkel), og utforskningens 18 355 er uendret til tokenet.

§4.1a maatte flytte, ikke forsvinne: dimensjonsfilteret bodde i renderingen og
bor naa i VERKTOEYENE, paa begge trinn - en listing som skjuler et fremmed
dokument mens read_file serverer det paa sti er et filter i navnet alene.
okf.in_dimension er eneste predikat.

Sporet er kaller-eid (ExplorationToolRecorder -> RunResult.debate_tool_calls ->
{run_id}-debate.json fra en finally) og skrives ogsaa TOMT: en debatt som
navigerer ingenting ER S2c-regresjonen, saa den maa kunne leses.

Load-bearing MAALT: aatte mutasjoner roede mot HELE suiten, groenn kontroll
1306/5 (fra 1295/5), golden demo-transcript.stdout BYTE-UENDRET
(shasum -a 1 av innholdet = ea8c534773acdbe41ae68f2c55724d69aaf8be4f).
M7 falsifiserte seg selv, ikke gaten - staar som maalt.

Maaling: docs/2026-09-04-s2c-debatt-k2.md

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

tests/test_scripted_explore_door_loadbearing.py

@@ -442,16 +442,25 @@ def test_a_step_naming_an_unknown_key_is_refused_by_name(tmp_path, capsys) -> No
     assert "result" in err, err
 
 
-def test_a_step_list_is_refused_for_a_debate_role(tmp_path, capsys) -> None:
-    """The list form is the EXPLORATION's, and is refused elsewhere by name rather than accepted
-    and quietly ignored. The debate's proposer is driven by ``generate``'s own call, not by an
-    agent loop that would invoke a tool between turns, so a script of calls there would describe a
-    rehearsal that cannot happen.
+def test_a_step_list_is_accepted_for_a_debate_role(tmp_path) -> None:
+    """REWRITTEN at S2c, not deleted: this arm used to pin the refusal of a step list for the
+    debate's roles, on the ground that the proposer answers ``generate``'s own call rather than an
+    agent loop that could invoke a tool between turns. Since S2c the proposer and the checker ARE
+    agents holding the four navigator tools, so that ground is measurably false and the refusal
+    would have kept the free half of the measurement ladder away from the very seam S2c builds —
+    the identical vacuity MAJOR-1 closed for the navigator.
+
+    What replaces it is the positive: a scripted proposer opens the base, and the debate's own
+    artefact names WHICH document. RED if the list form is refused for a debate role again, and RED
+    if the debate's ``ExplorationToolRecorder`` is detached (the run succeeds, the trace is empty).
     """
     replies = _replies_file(
         tmp_path,
         {
-            "proposer": [{"call": "retrieve_cost_docs", "args": {"query": "x"}}],
+            "proposer": [
+                {"call": "read_bundle", "args": {"bundle_id": "bygg-energi-mikro"}},
+                _PROPOSER_REPLY,
+            ],
             "checker": "VERDICT: APPROVE",
             "manager": list(_MANAGER_STAGES),
             "navigator": "NAVIGATOR: read the index.",
@@ -461,6 +470,12 @@ def test_a_step_list_is_refused_for_a_debate_role(tmp_path, capsys) -> None:
 
     rc = run.main(_explore_argv(tmp_path, replies, "scripted-debate-list"))
 
-    assert rc == 1
-    err = capsys.readouterr().err
-    assert "run refused" in err and "proposer" in err, err
+    assert rc == 0
+    payload = json.loads(
+        (tmp_path / "outbox" / "scripted-debate-list-debate.json").read_text(encoding="utf-8")
+    )
+    assert payload["tool_calls"][0] == {
+        "name": "read_bundle",
+        "bundle_id": "bygg-energi-mikro",
+        "path": "",
+    }, payload["tool_calls"]