Mister-Meeseeks · Oct 16, 2026 · Oct 14, 2026
diff --git a/research/char2-threshold/LICENSE b/research/char2-threshold/LICENSE
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diff --git a/research/char2-threshold/MANIFEST.sha256 b/research/char2-threshold/MANIFEST.sha256
@@ -0,0 +1,20 @@
+c71d239df91726fc519c6eb72d318ec65820627232b2f796219e87dcf35d0ab4  LICENSE
+493bc38a8f3643bfabad4f25e3f818a223f5968c85ff4015735db5721b9b6ac6  NOTICE.md
+65e4b34276b5b6c31f105d4c36fa5a8a5f530f4a8bc1f41711f2e73dee1f8ea1  README.md
+c22026fe0d1e93cd942bb96ff9a0707bf5182d59c589ca2f64457da576b824dc  SOURCES.json
+af0b7f2342927e8a3a5ee1e2eab7f39f0e8b2a3443760301fe2c05fd414451a2  c/kgap.c
+fb18332a3adb4842c3662346aa7f6b5115debc04f1a392b6e9cbb423b7b83c8d  checks/expect.py
+3fb435bd31c3d30cc3040f1961dd2af041c6cbdfe9d8d542e9ffe2ab6f1a773b  checks/fano.py
+2982b6b81592263192a054874d6c0316aeccd0407a75ed46bad1bb04453af116  checks/units.py
+80bb03e235b297ebf961cdc921268e7b1d40701128b1cb0c0c30449263270bcf  data/e6_best.json
+fed66f706661db5ea706aebc7097f1dd0f9432ae926f4b3689ac5372091a0974  data/fano_T4.json
+a3d4bae1b1a8100c762b57c1b9b6b24908b1a31b02a0b771782fbb9efe832eff  data/fano_T5.json
+3f2b0891955df4b48cb10688d60fccc961aae8e2eb87090801401278b8463db8  evidence/KPR4-GAP-NOTES.md
+23c955140e49f7a4b005a5cbabcbeba744bf3704e2da15d1eaa397dc00e42c58  lib/roots.py
+db1f2bc4e99058a3eb7b3cee2ed0f2255deacdcd9b55416c3a04e7495e70ce22  lib/units.py
+a840308c845b45136b57124df866ec7c053e2f5c91ad7aaa5a0dcf1aa95fa024  requirements.txt
+15fb11f512404508259f1b3a701b62bf34ff881fca1ebc43313aec2c5ca3881f  scripts/make_fano.py
+6c4c71c693e63a9b27b327c181d308878dd7c8ec966d70fea708e8bed4d9355b  scripts/provenance.py
+070bc3758a459b495ae429f16e8f94fac17a6eeb19a662229f26c6fe60f63e4e  scripts/realize.py
+3cee17d758cd91c438fcddf2d3a6a3fb0651db9bc7acca5e59cf79c3d542e9c7  scripts/search_e6.py
+e1c06ece517a00dd6e44d03d1759649348c54599a76491021577b826d26d4ccb  verify.sh
diff --git a/research/char2-threshold/NOTICE.md b/research/char2-threshold/NOTICE.md
@@ -0,0 +1,16 @@
+# Notice
+
+Prepared by DreamingOfClouds with Claude Opus 5.5 (Anthropic), via Claude Code; Apache-2.0 (`LICENSE`, copied from the repository root).
+
+## Credits
+
+- **#446** (Theorem C, closed) and **#595** (merged): the cost formula and the pairing model; **#1590** (merged): exact decoders, Lemma A, Lemma B, ERR1 (E7 and E8 dyadic decoders with cost 49 and 72), and the pattern of `scripts/provenance.py` and `checks/expect.py` (both adapted from there); **#2111** (open): the T = 3 side (tied_min, the lift route), which this package does not repeat. #606, #1698 and #1830 are cited as context for the surrounding decoder discussion; nothing here depends on them.
+- Our working card `KPR4-GAP` (2026-10-14): `c/kgap.c`, the searches and the numerical realisations; its notes are shipped verbatim in `evidence/`.
+
+## New in this package
+
+`README.md`, `verify.sh`, `SOURCES.json`, `requirements.txt`, `MANIFEST.sha256`, `lib/roots.py`, `lib/units.py` (pure-Python exact versions of the card's `units.py`/`kg.py` logic), `checks/units.py`, `checks/fano.py`, `scripts/search_e6.py`, `scripts/make_fano.py`, and the data files.
+
+## Adapted from our earlier work
+
+`c/kgap.c` (unchanged), `scripts/realize.py` (unchanged), `evidence/KPR4-GAP-NOTES.md` (verbatim).