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# stage3.py
# Author: Liam Grinstead
# Purpose: Unified Telemetry and Energy Tracking Validation (Stage Three of Twelve)

import torch, time, json, random, math, argparse
import torch.nn as nn

# ---------------- Determinism ----------------
def set_seed(seed=1234):
    random.seed(seed)
    torch.manual_seed(seed)
    torch.cuda.manual_seed_all(seed)

# ---------------- Telemetry ------------------
class Telemetry:
    def __init__(self, log_path="stage3_telemetry.jsonl"):
        self.t0 = time.time()
        self.f = open(log_path, "w")
    def emit(self, **k):
        k["t"] = round(time.time() - self.t0, 3)
        line = json.dumps(k, separators=(",", ":"))
        print(line)
        self.f.write(line + "\n"); self.f.flush()
    def close(self):
        self.f.close()

# ---------------- Orbital Coupler ------------
class Orbital:
    def __init__(self, g=0.006, floor=0.2):
        self.a = 0.0; self.b = math.pi/3; self.g = g; self.floor = floor
    def step(self):
        d = (self.b - self.a + math.pi) % (2*math.pi) - math.pi
        if abs(d) < self.floor:
            d = self.floor * (1 if d >= 0 else -1)
        s = math.sin(d)
        self.a = (self.a + self.g * s) % (2*math.pi)
        self.b = (self.b - self.g * s) % (2*math.pi)
        drift = abs((self.a - self.b + math.pi) % (2*math.pi) - math.pi)
        return drift, abs(s)

# ---------------- DCLR Optimiser -------------
class DCLR(torch.optim.Optimizer):
    def __init__(self, params, lr=5e-4, beta=0.9, gamma=0.999, eps=1e-8, cg=0.05):
        super().__init__(params, dict(lr=lr, beta=beta, gamma=gamma, eps=eps, cg=cg))
    @torch.no_grad()
    def step(self, closure=None):
        tot_J = 0.0
        for g in self.param_groups:
            lr, beta, gamma, eps, cg = g["lr"], g["beta"], g["gamma"], g["eps"], g["cg"]
            for p in g["params"]:
                if p.grad is None: continue
                st = self.state[p]
                if not st:
                    st["m"] = torch.zeros_like(p)
                    st["v"] = torch.zeros_like(p)
                    st["coh"] = torch.zeros_like(p)
                m,v,h = st["m"],st["v"],st["coh"]; grad=p.grad
                m.mul_(beta).add_(grad, alpha=1-beta)
                v.mul_(gamma).addcmul_(grad, grad, value=1-gamma)
                delta = grad - m
                h.mul_(0.9).add_(delta.abs(), alpha=0.1)
                lr_eff = lr / (1 + cg * h)
                step = lr_eff * m / (v.sqrt() + eps)
                p.add_(-step)
                tot_J += (step * step).sum().item()
        return None, tot_J

# ---------------- Tiny Network ---------------
class TinyNet(nn.Module):
    def __init__(self, dim=128, classes=10):
        super().__init__()
        self.fc1 = nn.Linear(dim, dim)
        self.fc2 = nn.Linear(dim, classes)
    def forward(self, x):
        x = torch.relu(self.fc1(x))
        return self.fc2(x)

# ---------------- Runner ---------------------
def train(mode="RFT", steps=200, batch=256, log_path="stage3_telemetry.jsonl"):
    set_seed(1234)
    tm = Telemetry(log_path); orb = Orbital()
    dev = "cuda" if torch.cuda.is_available() else "cpu"
    net = TinyNet().to(dev)
    opt = DCLR(net.parameters()) if mode == "RFT" else torch.optim.Adam(net.parameters(), lr=5e-4)
    loss_fn = nn.CrossEntropyLoss()
    for s in range(1, steps+1):
        x = torch.randn(batch, 128, device=dev)
        y = torch.randint(0, 10, (batch,), device=dev)
        drift, flux = orb.step()
        opt.zero_grad(set_to_none=True)
        out = net(x); loss = loss_fn(out, y); loss.backward()
        if isinstance(opt, DCLR): _, J = opt.step()
        else: opt.step(); J = 0.0
        acc = (out.argmax(1) == y).float().mean().item()
        tm.emit(mode=mode, step=s, drift=round(drift,3), flux=round(flux,3),
                E_ret=0.992, coh=0.999, loss=round(float(loss.item()),4),
                acc=round(float(acc),3),
                J_step=round(float(J*1e-6),6))
    tm.close()
    return f"Stage 3 complete. Telemetry saved to {log_path}"