feat: migrate to Chronos-2 zero-shot with temperature covariates

ui/backend: pivot from chronos-2 multivariate to chronos-bolt-base fine-tuning architecture

fix: change hardcoded base model from chronos v1 to v2 to avoid pipeline loading warnings

fix: correct quantile array shape handling for Chronos 2 predict_quantiles output

fix: correct static type checker error for pyrefly and narrow properties explicitly

feat: upgrade Chronos forecasting engine to Chronos-2 with 8192 token multivariate context window

feat: upgrade SARIMA to multivariate using temperature exogenous variables

perf: increase chronos samples to 500 and remove deterministic constraints

feat: remove replay topology button, enforce strict DB event fetching to stop hallucination, bump chronos num_samples to 100

perf: increase chronos sample size to 40 for smoother quantiles without breaking time budget

feat: tune chronos hyperparameters for deterministic accuracy

style: remove unnecessary float() casting

fix: initialize data_stats to prevent NoneType error

feat: add backtest target date selector

fix: bypass broken fine-tuned weights and revert to pure daily baseline inference for maximum accuracy

refactor: simplify to pure hourly inference pipeline for fine-tuned chronos

fix: recursively resolve huggingface weights inside autogluon output directories

feat: implement chronos-on-chronos ensemble for multi-resolution drift calibration

feat: implement mean-matching ensemble to calibrate chronos output against sarima baseline

fix: add np.asarray cast in tasks.py to resolve type checking error for reshape

feat: overhaul seasonality analysis — ramp dynamics, load composition, demand heatmap, and LLM synthesis

fix: resolve UI output rendering and metrics (PDF buttons, NA metrics, prompt formatting, duplicated season analysis)

fix: replace deprecated datetime.utcnow() with timezone-aware datetime.now(timezone.utc)

fix: pass tensor positionally to predict_quantiles

fix: None guard, remove stale .env copy from Dockerfile, update README

fix: comprehensive production stability fixes

Feat/Chronos-2 Integrated,Tests added,Finetuned

UI added and fixed

7 nodes implementation done