FAT: pass changed analog Value 1 / Value 2 pairs

[masarray]

Contract

FAT current-pair assessment now follows the operator contract consistently:

• discrete: any authoritative good-quality state change in the current V1/V2 pair passes (FALSE -> TRUE, TRUE -> FALSE, OPEN -> CLOSED, CLOSED -> OPEN)
• analog: stable good-quality V1/V2 passes when the numeric value changes beyond the same adaptive settling tolerance used by auto-capture
• same/noise-level analog values remain non-passing and require review / further change

Implementation

• preserves existing generation, sequence, quality and stale-evidence guards
• routes analog current evidence through numeric-change assessment instead of discrete state normalization
• analog rows now render PASS / REVIEW / FAIL from the current assessment rather than generic COMPLETE
• leaves non-analog operator-snapshot semantics unchanged
• does not change IEC acquisition cadence, reconnect logic, journal ordering, or analog auto-capture settling

Regression coverage

• discrete false/true in both directions
• SCL-style Open/Closed in both directions
• changed analog V1/V2 -> PASS
• analog difference inside settling tolerance -> REVIEW / no false PASS
• bad-quality analog pair -> REVIEW
• end-to-end stable analog auto-capture 0 -> 65.748 -> current-pair PASS
• noise within tolerance does not auto-create V2