feat: cross-detector language policy + tidy structure & file naming

feat: word-quality-aware detectors + NER, Filler, Field-Fit fixes

refactor: curate lexicons to Indonesia-only

feat: add Field-Fit & Completeness detectors, rework ML layers, expand Indonesian-only lexicons

refactor: improve detectors logic, clean fallback lexicons, and polish UI layout/labels

fix: reduce evaluator false positives in prompt analysis

feat: strengthen detectors, slim API schema, and improve UX

feat: add syntax checker and improve multilingual prompt analysis