feat(Φ5.2): trios-phi-schedule — φ-exponential LR scheduler

[gHashTag]

🎯 Цель

Атомарный крейт — только фамилия функций расписания LR. Без зависимостей кроме trios-physics.

📦 Создать: crates/trios-phi-schedule/

crates/trios-phi-schedule/
├── Cargo.toml
└── src/
    └── lib.rs

💻 Реализация

use trios_physics::{PHI, ALPHA_PHI};

/// τ = T / (φ × 27)
pub fn tau(max_steps: usize) -> f64 {
    max_steps as f64 / (PHI * 27.0)
}

/// LR(t) = α_φ · φ^(-t/τ)
pub fn phi_lr(step: usize, max_steps: usize) -> f64 {
    ALPHA_PHI * PHI.powf(-(step as f64 / tau(max_steps)))
}

/// warmup за Fib(7)=21 шагов
pub fn phi_lr_warmup(step: usize, warmup: usize, max_steps: usize) -> f64 {
    if step < warmup {
        ALPHA_PHI * (step as f64 / warmup as f64)
    } else {
        phi_lr(step - warmup, max_steps - warmup)
    }
}

✅ Acceptance Criteria

• cargo test -p trios-phi-schedule — все тесты зелёные
• phi_lr(0, 10000) равно ALPHA_PHI (Δ < 1e-10)
• phi_lr(10000, 10000) < phi_lr(0, 10000) (убывающий график)
• warmup: phi_lr_warmup(0, 21, 10000) == 0.0
• warmup: phi_lr_warmup(21, 21, 10000) == ALPHA_PHI (Д < 1e-10)
• НЕТ .sh файлов
• Коммит с refs #24

⏰ Дедлайн

30 апреля 2026. Priority: 🔴 CRITICAL

[gHashTag]

✅ PR-25 Complete

README.md has been updated with:

• Migration M0-M7 status (what actually migrated from trios-trainer-igla)
• Training-Flow V2 P0-P5 pre-registered plan
• Pre-Registered Decision Matrix
• Fixed champion.toml (R8 compliant)
• New docs/TRAINING_FLOW_V2.md

PR: #319

[gHashTag]

✅ README Updated — New PR #319

README.md has been updated with Migration M0-M7 + Training-Flow V2.

Existing PR: #319

Note: Issue #25 was already assigned to Φ5.3 task. Created new issue #327 for README updates.

[gHashTag]

Parameter Golf competition deadline was April 30, 2026. Competition ended. Closing.