docs(measure): K2 on pptx/odt/rtf -- denominator 0 in both named corpora

Re-measures the declared UMÅLT gap from docs/2026-09-02-korpuskjoring-k1-k2.md
against ground truth (find, not STATE). K2/trinn1 and "K3-korpuset" are the
same directory (both K1/K2 02.09 and K3 09.04 run against
~/corpora/okf-telling-20260829/K2/trinn1) -- one corpus, counted once. 0
pptx, 0 odt, 0 rtf, known-positive control (docx: 5) proves the query can
find. Sum 0 across both named corpora ends the order at step 1 per its own
instruction; no K2 step 2 work started, no code added. No public corpus with
these formats is on hand under ~/corpora -- reported as not verified, not as
nonexistent.

Order: 20260904T190727Z-589245685-from-.claude

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01M7Qvq71UCQZwkrLT7WbeB9

docs/2026-09-04-k2-pptx-odt-rtf.md

@@ -0,0 +1,118 @@
+# K2 on pptx/odt/rtf: the denominator, measured, 2026-09-04
+
+Order `20260904T190727Z-589245685-from-.claude`. Closes a declared gap —
+`docs/2026-09-02-korpuskjoring-k1-k2.md` already recorded `pptx`, `odt` and
+`rtf` as "denominator 0 — unmeasured by construction" in K2/trinn1. This
+report re-measures that denominator with `ls`/`find` against ground truth,
+per Verifiseringsloven ansikt 4 (a measured absence needs its query proven
+able to find, not just an empty result), rather than trusting the earlier
+doc's number as still current.
+
+Ordered as two steps: measure the denominator first, then only run K2 if the
+denominator is non-zero. It stayed zero, so step 2 (K2 fidelity) was never
+started — no code, no test, no fixture, nothing to gate under the Iron Law.
+
+## Step 1 — the denominator
+
+**"K3-korpuset" is not a second directory.** Both `docs/2026-09-02-korpuskjoring-k1-k2.md`
+(K1/K2, 02.09) and `docs/2026-09-04-k3-arm-c.md` (K3, 09.04) run their
+`okf_corpus_run.py` invocation against the same path:
+`~/corpora/okf-telling-20260829/K2/trinn1`. There is no separate K3 corpus
+directory — the order's parenthetical ("samme kataloger K1/K2-målingene 02.09
+brukte") confirms this rather than naming a second one. One directory,
+counted once.
+
+```
+CORPUS=~/corpora/okf-telling-20260829/K2/trinn1
+find "$CORPUS" -maxdepth 1 -type f | wc -l          # -> 43
+find "$CORPUS" -maxdepth 1 -iname '*.pptx' | wc -l  # -> 0
+find "$CORPUS" -maxdepth 1 -iname '*.odt'  | wc -l  # -> 0
+find "$CORPUS" -maxdepth 1 -iname '*.rtf'  | wc -l  # -> 0
+```
+
+| format | files in `K2/trinn1` (= K3's corpus) |
+|--------|---------------------------------------|
+| `pptx` | 0 |
+| `odt`  | 0 |
+| `rtf`  | 0 |
+
+`N = 43` matches the file count both prior docs report for this directory —
+verified here again with `find`, not carried over from STATE or a prior doc.
+
+**Known-positive control** (the query can find, so the 0 above is a measured
+absence, not a broken query): the same directory, same command shape, a
+format known present:
+
+```
+find ~/corpora/okf-telling-20260829/K2/trinn1 -maxdepth 1 -iname '*.docx' | wc -l  # -> 5
+```
+
+5/5 found, exit 0. The pptx/odt/rtf queries above ran with the identical
+shape and returned nothing — an absence, not a silent failure.
+
+There is also a `K2/trinn2` directory (43 further files, byte-identical to
+`trinn1` per `docs/2026-08-29-telling-offentlig-prosjektkorpus.md § 6`,
+`sha256` equal 43/43) and a `K1` directory (0 files on disk — K1 Skram was
+never downloadable, same doc § 5). Neither was part of the 02.09 K1/K2
+measurement or the 09.04 K3 measurement, and the order scopes this
+re-measurement to "the same directories K1/K2 used" — so neither is counted
+here. Naming them is the whole of what this report says about them.
+
+**Sum across both named corpora (K2/trinn1 and "K3-korpuset", which are the
+same directory): 0.** Per the order, that ends the work at step 1 — K2 for
+`pptx`/`odt`/`rtf` is not measurable on this corpus, and step 2 does not run.
+
+## Which public corpus has these formats
+
+The order asks this report to name a public corpus that already has
+`pptx`/`odt`/`rtf` files, without fetching anything new. `~/corpora/` holds
+exactly one corpus directory (`okf-telling-20260829`), and no file anywhere
+under it matches `*.pptx`, `*.odt` or `*.rtf`:
+
+```
+find ~/corpora -iname '*.pptx' -o -iname '*.odt' -o -iname '*.rtf'   # -> no output, exit 0
+```
+
+**No public corpus with these formats is on hand.** Naming one would require
+new research (a new download, a new search) — out of scope for this order,
+which asked only to check what already exists locally. This is reported as
+"not verified", not as "no such corpus exists" (Verifiseringsloven ansikt 4):
+absence of a locally-known example is not evidence none exists publicly.
+
+## Bundle integrity
+
+No bundle was touched — step 2 never ran, so there is nothing to
+materialize. The only operations against the corpus were read-only `find`
+commands. As a sanity check anyway (the aggregate-hash trap from
+`docs/2026-09-04-cid-andel-k2.md` — `sort` needs `LC_ALL=C` or the hash is an
+artifact of locale, not content):
+
+```
+LC_ALL=C find ~/corpora/okf-telling-20260829/K2/trinn1 -type f -print0 \
+  | LC_ALL=C sort -z | xargs -0 shasum -a 256 | LC_ALL=C sort | shasum -a 256
+```
+
+Before and after the counting commands above: both runs gave
+`4f093df27adb081c99c3e08ad12aab1e56f4429bcf900bdf80bc01cf21e104ce`. Identical —
+byte-unchanged, as expected of read-only `find`/`ls`.
+
+## Verification log
+
+| Claim | Command | Outcome |
+|---|---|---|
+| K2/trinn1 has 43 files | `find … -maxdepth 1 -type f \| wc -l` | 43 |
+| 0 pptx | `find … -iname '*.pptx' \| wc -l` | 0 |
+| 0 odt | `find … -iname '*.odt' \| wc -l` | 0 |
+| 0 rtf | `find … -iname '*.rtf' \| wc -l` | 0 |
+| Query can find (known-positive) | same shape, `-iname '*.docx'` | 5 |
+| K3 uses the same directory | `grep -n corpus docs/2026-09-04-k3-arm-c.md` | `--corpus …/K2/trinn1` |
+| No pptx/odt/rtf anywhere under `~/corpora` | `find ~/corpora -iname '*.pptx' -o -iname '*.odt' -o -iname '*.rtf'` | no output, exit 0 |
+| Corpus byte-unchanged | aggregate `LC_ALL=C` sha256, before and after | identical hash both times |
+
+## Result
+
+`pptx`, `odt`, `rtf` in K2/trinn1 (the same directory the K1/K2 and K3
+measurements used): **0 files in both named corpora — K2 for these formats
+is not measurable here.** No K2 step 2 work was started. No public corpus
+with these formats is currently known locally; identifying one is new
+research and out of scope for this order.