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feat(navigation,validator): read_dir names the rung that reads a document, and a run can require its anchoring

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F3 and F4, the two findings the S7 acid test (session 98) reported and left. The order required
both descriptions to be treated as PREMISES. One held; the other was felled before anything was
built on it.

F3 -- premise FELLED, asymmetry real. The order read arm C's two refused calls as "the path names
a document that EXISTS". Measured against the base that ran: its root holds 27 directories named
del-ii-bilag-N-... and 12 documents named inbox-del-ii-bilag-N-....md, and the requested path
matches NEITHER -- it is the directory naming convention applied to a document whose real name
carries an inbox- prefix. So the two live rounds were the UNKNOWN-path class, and this delivery
does NOT recover them (gated). What IS real: read_file on a directory has named read_dir since
session 95, while read_dir on a document named neither the rung nor the path.
okf.DocumentPathRefused closes that one direction -- a ValueError, a SIBLING of BundlePathNotFound
rather than a subclass, built from context_files (never files) and through the same in_dimension
predicate the listing uses, quoting the document's REAL name so what it hands back resolves.

F4 -- premise HELD, option (c) felled by measurement. All four live artefacts stamped
cost_baseline_anchored: False and each arm invented its cost codes. derive_cost_baseline refuses
against the delivered base: K2's price schedule is a pandoc SIMPLE table with ONE column header,
so making --derive-cost-baseline reachable there would mean inventing a rule for an unmeasured
form -- MAJOR-4's own honesty limit. Chose (b) over (a): --require-cost-baseline /
run_project(require_cost_baseline=...), OPT-IN and never default, so every bundle without a
cost-baseline.json runs unchanged. The gate sits where both branches have bound baseline and ABOVE
the dry-run cut, so it fires on the free trip too and, on the paid one, before the first model
call. Three CLI refusals by name, each with an rc-0 control.

12 mutations, all red against the WHOLE suite. Green control 1493/5 -> 1511/5 (+18 node-ids, 0
removed); golden demo-transcript.stdout BYTE-UNCHANGED (shasum -a 1 of the CONTENT =
ea8c534773acdbe41ae68f2c55724d69aaf8be4f). No paid run: both findings measured offline.

Measurement: docs/2026-09-08-f3-f4-nekten-og-forankringen.md
Order: 20260908T020419Z-5837110336-from-portfolio-optimiser

Co-Authored-By: Claude <Opus 5>
This commit is contained in:
Kjell Tore Guttormsen 2026-09-08 05:32:46 +02:00
commit 9232f94041
8 changed files with 759 additions and 2 deletions
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8
tests/test_hierarchical_navigation_loadbearing.py
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@ -265,10 +265,14 @@ def test_a_nested_document_is_reachable_through_the_rung_below() -> None:
def test_an_unknown_directory_is_refused_by_name(tmp_path: Path) -> None:
"""(g) Fail-closed, and it is the vacuity trap in its own right: an unknown path rendered as an
empty listing is indistinguishable from a directory that exists and holds nothing. Validation,
never invention (``write_concept_file``'s rule)."""
never invention (``write_concept_file``'s rule).
Pinned to ``BundlePathNotFound`` by NAME since F3 added its sibling: both refusals quote the
caller's path, so a match on the path alone could no longer tell "this is nothing" from "this
is a document" - the substring two branches share."""
base = _write_tree(tmp_path, "korpus", dirs=2, per_dir=2)
with pytest.raises(ValueError, match="kategori-99"):
with pytest.raises(okf.BundlePathNotFound, match="kategori-99"):
_read_dir(base, "kategori-99")