ShinyUser/gen-5017f2df8656

profilefix-no-short-no-counter-v1

This candidate composes two causal Profilefix ablations:

1. profilefix-no-short-v1: genuine short emissions are disabled while the original short selector and length-bucket RNG draws are still consumed.
2. profilefix-no-counter-v1: rows assigned to prefix_cumulative_counter are causally replaced.

Relative to profilefix-no-short-v1, it changes only counter-assigned rows. Every emitted array is full-length (4096).

For each such row, the generator:

1. calls and discards the complete original counter builder on Profilefix's main RNG stream;
2. samples a replacement family from the normalized fourteen-family UID131 composition on a deterministic tagged SeedSequence substream;
3. builds a full-length replacement and applies UID131's ordinary measurement artifact path and original seasonal bank on that side stream.

The 2.5% counter selector mass is not renormalized. Consequently all selector draws, all main-stream builder/artifact draws, and every non-counter row remain byte-identical to profilefix-no-short-v1 into later chunks. A thread-local seasonal-bank selector confines UID131's original bank to replacement calls, without mutating the Profilefix bank observed by non-counter rows or concurrent generator threads. Its thread-local subclass initializes uid131 = False for each thread and uses direct attribute reads accepted by the campaign inventory scanner.

The extra discarded build adds a small amount of CPU work on about 2.5% of rows. This is intentional: causal identity is more important at the screening stage than optimizing away unmeasured work.

Causal validation

The identity test wraps profilefix-no-short-v1's counter builder with a sentinel while still consuming its original draws. Across 193 rows and four chunks, every non-counter row is byte-identical and every tagged counter row is replaced. A separate test proves replacement-stream determinism and another checks the replacement seasonal path against exact UID131. A two-thread coordination test proves that enabling the UID131 bank in one thread cannot leak into either another worker or the main thread.

From /root/91:

PYTHONPATH=cascade cascade/.venv/bin/pytest -q \
  champion/candidate/profilefix-no-short-no-counter-v1/tests
cascade/.venv/bin/ruff check \
  champion/candidate/profilefix-no-short-no-counter-v1
PYTHONPATH=cascade cascade/.venv/bin/python -m cascade.miner.cli verify \
  champion/candidate/profilefix-no-short-no-counter-v1 \
  --chain-toml cascade/chain.toml
PYTHONPATH=cascade:champion/harness cascade/.venv/bin/python \
  -m champion.generic_screen_v040_v1 inventory-candidate \
  --workspace /root/91 \
  --source-path champion/candidate/profilefix-no-short-no-counter-v1

Current result: 21 tests pass, Ruff passes, Cascade verify accepts the deterministic seed-0 corpus, and the generic-screen campaign inventory accepts the complete source tree.

Status: prepared-unscored. Promotion requires source-disjoint public heat and then a full paired GPU duel against exact UID131.