Round 6 left two things behind: a measured coverage hole with the repair built
but not the number to move it, and a retrieval regression that kept two
spreadsheet rules off the default. Both are measured; four defaults move.
THE HOLE IS BIGGER THAN THE RULE BUILT FOR IT. Measured over the 39-document
corpus, the pre-move default left 207 435 characters -- 11.92 % -- in no
segment: 163 804 above the first entry, 26 041 between entries, 17 590 after
the last. `--first-span-from-zero` closes the first part entirely, 79 % of the
whole, leaving 43 631 (2.51 %) over 8 of 32 documents. It adds no boundary and
the K2 concept count is identical with and without it (425 = 425); hit@8 holds
[1,1,1,1,1,-] under both tie-breaks and the 12-position reference does not move
one cell.
THE RANKER WAS PUNISHING FINE-GRAINING FOR BEING FINE-GRAINED. Round 6 held
`--sheet-section-rows --keep-table-heading` back because on a bundle built with
them row 1 fell rank 1 -> 2, and ruled out the document prior because its rank
over 39 DOCUMENTS was 1 on both bundles. RRF reads a rank over CONCEPTS:
splitting the gold document 1 -> 12 puts its own twelve concepts in that
signal's whole top tie group, so the one leading the body signal takes position
11, contributing 1/71 where the undivided concept contributed 1/61. A signal
that scored them all EQUALLY still emitted twelve ranks, ordered by concept_id,
and the fusion read alphabetical order as a measurement.
AND THE REPAIR WAS ALREADY IN THE TREE, OFF FOR A COST THAT HAD BEEN REMOVED.
`--tie-shared-rank` shipped off 2026-09-08 because hit@8 fell 5 of 6 to 4 of 6.
Swept over 2 prior exponents x 3 bundles x 6 rows: that fall exists only at
DOCUMENT_PRIOR_EXPONENT 1.0. Round 6 moved the exponent to 0.5 for an unrelated
reason and correctly reported it moved no hit@8 row -- nobody measured the
pair. A flag's "off by measurement" is a measurement of a CONFIGURATION, not a
property of the flag.
Shipped, each with an explicit opt-out and both directions measured rather than
asserted: --no-first-span-from-zero --no-sheet-section-rows
--no-keep-table-heading reproduces the previous bundle byte for byte (diff -rq,
0 differences), and the no-flag build equals the explicit-flag build.
--no-tie-shared-rank reproduces the previous excerpt order -- the one change
here that alters a payload with no bundle changing.
K2 default: 436 concepts / 832 files, digest 8dff8a8e6c15d2f7..., hit@8 5 of 6
ranks [1,1,1,1,1,-]. The pin now holds its own known-negative on those bytes:
read with --no-tie-shared-rank the same bundle gives [2,1,1,1,1,-], so the
green assertion names its cause. Consumer cost is a re-run: 425/810 -> 436/832
on the reference corpus, 15/30 -> 26/52 on a five-document folder.
pptx and md measured end to end for the first time, on two hand-built
documents: md recovers 3 of 4 declared headings, pptx segments per slide only
where the converter recognised a title placeholder. A converter attribute leaks
into titles ({#slide-N}, {#sheet-1}) on 2 of 810 K2 files and 1 of 30 on a
five-document folder -- not fixed, because a filename is reduced from its title
and the fix renames concept ids a consumer has cited.
Suite 1486 (1478 before), ruff and mypy --strict clean over 21 files.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
One rule explains every remaining `pdf` miss on the twelve-position reference:
where a document DECLARES headings, Arm D's RECOVERED headings are the whole of
the excess, and every declared one is a unit the reference wants. `--outline-gate`
admits recovery only where the document declares none of its own, plus any one
recovered heading covering OUTLINE_SHARE (0.20) of the text. It is `fold_units`
clause 2's own principle moved from voting to admission, and it filters at
ADMISSION so the text a removed mark opened is carried by the mark above it --
the post-filter form scores identically on all twelve positions and loses that
text, which is why only one of them shipped.
`--outline-gate` and `--drop-wrapped-outline` become the package default, one
decision because neither carries the reference alone: `pdf` 2 of 8 -> 5 of 8
alone, 7 of 8 together; the sheet 5 of 12 -> 10 of 12; `docx` unchanged at 3 of
3. Each keeps an explicit opt-out. The bar the move had to clear was not the
reference: hit@8 on a K2 bundle built with it holds 5 of 6 at ranks 1,1,1,1,1,-,
no row losing rank 1. `--sheet-section-rows --keep-table-heading` reaches 11 of
12 and does NOT ship, because on a bundle built with it row 1 falls rank 1 -> 2.
Cost to a consumer is a re-run: 492 concepts / 944 files -> 425 / 810.
DOCUMENT_PRIOR_EXPONENT makes the document prior sublinear (total/n**0.5). A sum
measures size and a density is diluted by every unit carrying none of the
question, so a document split 1 -> 12 lost its prior by 12. Swept over five
values on 18 rows it is at least as good as the delivered density everywhere and
strictly better on three. Stated plainly: end to end it moved NOT ONE hit@8 row
on any of four bundles, so it did not solve the knot it was adopted for -- what
did is that the `pdf` gain never needed `--sheet-section-rows`.
`--first-span-from-zero` is off and repairs a measured loss found while chasing
one position's 940 characters: 32 of the 32 documents that get a plan leave the
text above their first concept in no segment -- 159 704 characters, 9.18 % of
the corpus, 45 841 from one document. It changes nothing on the reference. Off
because it moves the first span of essentially every bundle with no hit@8 number
behind it yet.
vegnormal-okf FUNN 2: SPEC section 8's own star row parsed as prose, so every
concept behind one was unreachable to the section 9.2 walk. `IndexPolicy.also_reads`
carries it for the SEGMENTED profiles, read-only, after the emitted pattern
misses -- the asymmetry `sources` already has. DEFAULT and STRICT_V1 untouched (O2).
vegnormal-okf FUNN 1: Door C's own outcome was refused at exit 1,
`bundle_id_missing`. `import_bundle` now takes `root_frontmatter_values`,
keyword-only, rendered before any disk mutation, written only when the index is
created -- Door B's mechanism and ordering.
Report: docs/2026-09-09-k3-runde6-outline-gaten-og-prioren.md.
Suite 1478 passed (1449 before), ruff and mypy clean.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
