Ports the core item processing: raw item JSON -> normalized columns for all 7
tables, with the exact per-table sentinel->NULL rules, material/item_set string
translation, the Spells/ActiveSpells union (is_active), and compute_base_values
(the spell_effects buff-reversal for base_armor_level/base_max_damage/
base_attack_bonus/etc., with the data embedded and the 167772170-vs-167772172
attack-bonus id discrepancy preserved). loadEnums now also loads MaterialType.
A loopback POST /debug/process returns the normalized columns for validation.
Validated against production's STORED rows (read-only, no writes): 0 mismatches
across 200 items for every sampled column of items, item_enhancements (incl.
translated material + set), item_combat_stats (incl. base_* values), and
item_ratings.
This unlocks ingestion (the processor produces the rows) and the remaining
search-response enrichment (spells/weapon/mana from the same extractor).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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