Motivation

Follow-up to #3881. The time-series SQL functions are recently added and still malleable. Each has positional optional parameters today, with obvious growth ahead:

• ts.movingAvg(value, window) - foreseeable: weighted, alignment (left/center/right), minPeriods.
• ts.timeBucket(interval, timestamp) - foreseeable: origin, timezone, alignment.
• ts.interpolate(value, method [, timestamp]) - foreseeable: maxGap, fillLeading, extrapolate.
• ts.promql(expr [, evalTimeMs]) - foreseeable: step, start, end, timeout, lookbackDelta.

Proposal

Accept a trailing options map validated by com.arcadedb.function.sql.FunctionOptions on each of the four. Positional forms remain supported. Unknown keys are rejected with a descriptive error.

Non-goals

• No grammar changes.
• No new knobs in this pass unless already wired up. The point is to install the hook and make future knob additions zero-cost at the call site.

Deliverables

• Code: route trailing options through FunctionOptions.
• Tests: options-map path + unknown-key rejection.
• Docs: show the options-map syntax alongside the positional form.