Taskfile.yml line 46 had an unquoted Go-template `{{.VAR}}` inside a YAML
flow sequence (`cmds: [...]`) -- the literal braces broke YAML parsing
outright ("did not find expected ',' or ']'"), so `task check` (and thus
CI's push-triggered check job) failed before running a single command.
A manual `workflow_dispatch` re-run passed because the autoresearch
workflow never calls `task check` at all -- unrelated path, not an
env/secret difference as first suspected. Quoted the string.
Also fixed a staticcheck QF1002 in internal/eval/var.go: a boolean
switch comparing the same variable (n1) in every case is a tagged
switch in disguise -- converted to `switch n1 { case 0: ... case n: ...
}`.
- train.py build(): year-based split (train≤2021, OOS≥2022) replaces
misleading 70/30 mixed-period split; true OOS val_vol_r2 now ~-0.36
vs previously reported +0.18 (artefact of cross-period data leakage)
- train.py: EXPORT_EMBEDDINGS block now exports both train+OOS embeddings
with dates and HV labels for Go eval harness
- cmd/eval: LinearProbeTrainTest uses train stats for standardisation of
both sets (no leakage); standardiseCompute/applyStandardise helpers
- internal/eval: add LinearProbeTrainTest (fit-on-train, eval-on-OOS)
alongside LinearProbe (same-set); 8/8 tests still green
Phase-0 gate result: val_vol_r2=-0.36, silhouette=0.043, erank=58.9/64.
Backbone produces high-rank embeddings (SIGReg working) but does NOT
generalize across 2021→2022 regime boundary. Gate: INCONCLUSIVE/FAIL.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
mathias
