Manual Pivot Plotter

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//📌 Manual Pivot Plotter (P, R1–R3, S1–S3)
//📈 Pine Script v6
//
//This script allows the user to manually input Pivot levels (P), Resistance levels
//(R1, R2, R3), and Support levels (S1, S2, S3). Each line starts at the beginning
//of the new trading day (detected at 00:00 UTC+8) and extends only a limited
//distance into the future (default: 3 bars).
//
//Features:
//✔ Manual pivot, support, and resistance level inputs
//✔ Lines refresh automatically at each new day (00:00 UTC+8)
//✔ Lines extend only a few bars ahead (not full chart)
//✔ Clean label placement slightly below line and near line end
//✔ No repainting, memory-safe line handling
//✔ Smooth intraday updates when values are edited
//
//This tool is ideal for traders who manually calculate or import pivot levels and
//prefer clean, minimal, non-intrusive visual levels on the chart.
//================================================================================