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Field notes from production projects — architecture, tradeoffs, lessons. No empty theory.
Quantization-aware training matters more than post-training quant. INT8 RKNN cuts size 3× with <2% accuracy loss. Offline-first saves the day when 4G drops.
A reranker matters more than a "bigger" embedding model. Chunking by heading beats fixed size. PII redaction belongs at the input pipeline, not in the prompt.
Do not mark a whole page "use client" just because one button needs state. Server Actions are not REST APIs. force-dynamic is a code smell, not a fix.
PLCs never exposed to the Internet. MES bridge in DMZ, IT only reads. Audit every PLC command write. ISO 9001 is not a checkbox — get the architecture right.