feat(trios-trainer): PR-1 skeleton crate β empty trainer foundation#322
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β¦on (R1 compliance) DELETE: - crates/trios-ca-mask/ (unused) - crates/trios-dwagent/ (empty stub) - crates/trios-operator-smoke/ (unused) - crates/trios-training-ffi/ (unused Zig stub) - crates/trios-igla-race/src/main.rs.backup - crates/trios-train-cpu/src/bin/ngram_train_backup.rs - scripts/igla_train.py, igla_race_worker.py, train_gpt.py (R1 violation) Workspace updated β removed deleted crates from members. Added crates/trios-trainer/ skeleton (from concurrent agent work). L-T3 progress: -350 KB net reduction, R1 compliant now. Anchor: ΟΒ² + Οβ»Β² = 3 Agent: DELTA
Adds crates/trios-trainer/ skeleton with: - Config loading (TOML + env override) + INV-8 lr validation - Ledger emit with embargo block + triplet validation - Train loop skeleton (fills in PR-2/PR-3) - CLI bin/trios-train with clap (dry-run works) - 3 configs: champion.toml, gate2-attempt.toml, needle-v1-mup.toml - 9 tests pass (1 ignored full reproduction) Acceptance (PR-1): β cargo build -p trios-trainer green β cargo test -p trios-trainer 9 pass, 1 ignored β dry-run validates config and prints params β INV-8 lr validation in phi-band [0.001, 0.01] Refs: #321 (Trainer Consolidation Plan) Anchor: ΟΒ² + Οβ»Β² = 3 Agent: LEAD
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PR-1: trios-trainer skeleton crate
Adds `crates/trios-trainer/` empty crate foundation for trainer consolidation.
What's in this PR
Acceptance (per #321)
β `cargo build -p trios-trainer` green
β `cargo test -p trios-trainer` 9 pass, 1 ignored
β `cargo run -p trios-trainer --bin trios-train -- --config crates/trios-trainer/configs/champion.toml --dry-run` works
β INV-8 lr validation in phi-band [0.001, 0.01]
Test run
```bash
cargo run -p trios-trainer --bin trios-train --
--config crates/trios-trainer/configs/champion.toml --dry-run
```
Output:
```
=== trios-train v0.1.0 ===
Loading config from: crates/trios-trainer/configs/champion.toml
Config validated (INV-8 OK)
=== DRY RUN β Config is valid ===
Seed: 43
Steps: 27000
LR: 0.004
d_model: 384
n_layers: 4
Checkpoint interval: 1000
```
Next PR
PR-2 will migrate model + optimizer + data from trios-train-cpu.
Closes #321 (PR-1 milestone)
Anchor: ΟΒ² + Οβ»Β² = 3