Initial commit: MTG personal library catalog (Tauri v2 + React/TS)

Full working app with:
- Rust core (mtgc-core): Scryfall ingester, nucleo fuzzy search, SQLite two-DB
  architecture (reference.db + library.db via ATTACH), criteria filters, deck ops
- Tauri v2 shell exposing the core as typed IPC commands
- React/TS frontend: card entry, library browser, deck editor
- Features: fuzzy card search, color/CMC/type/commander-identity filters,
  tile/list view toggle, hover card previews, deck format + commander support,
  per-card location field, grouping by type/subtype/CMC/color, localStorage
  persistence for active tab/deck/grouping, Discord-inspired dark UI (#C8553D accent)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

crates/mtgc-core/src/sql/reference_schema.sql

@@ -0,0 +1,56 @@
+-- Schema for reference.db: read-only card data built from Scryfall bulk.
+-- Applied against a connection whose `main` database IS the reference db
+-- (the ingester opens reference.db directly; at runtime it is ATTACHed as `ref`).
+
+CREATE TABLE IF NOT EXISTS oracle_cards (
+    oracle_id      TEXT PRIMARY KEY,
+    name           TEXT NOT NULL,
+    name_lower     TEXT NOT NULL,          -- for cheap case-insensitive substring
+    mana_value     REAL NOT NULL DEFAULT 0,
+    colors         INTEGER NOT NULL DEFAULT 0,   -- WUBRG bitmask
+    color_identity INTEGER NOT NULL DEFAULT 0,   -- WUBRG bitmask
+    type_line      TEXT NOT NULL DEFAULT '',
+    oracle_text    TEXT NOT NULL DEFAULT ''
+);
+CREATE INDEX IF NOT EXISTS idx_oracle_name_lower ON oracle_cards(name_lower);
+CREATE INDEX IF NOT EXISTS idx_oracle_ci ON oracle_cards(color_identity);
+CREATE INDEX IF NOT EXISTS idx_oracle_mv ON oracle_cards(mana_value);
+
+-- Normalized attribute tables for fast type/subtype/keyword filtering.
+CREATE TABLE IF NOT EXISTS card_types (
+    oracle_id TEXT NOT NULL,
+    type      TEXT NOT NULL
+);
+CREATE INDEX IF NOT EXISTS idx_card_types_type ON card_types(type);
+CREATE INDEX IF NOT EXISTS idx_card_types_oid ON card_types(oracle_id);
+
+CREATE TABLE IF NOT EXISTS card_subtypes (
+    oracle_id TEXT NOT NULL,
+    subtype   TEXT NOT NULL
+);
+CREATE INDEX IF NOT EXISTS idx_card_subtypes_sub ON card_subtypes(subtype);
+CREATE INDEX IF NOT EXISTS idx_card_subtypes_oid ON card_subtypes(oracle_id);
+
+CREATE TABLE IF NOT EXISTS card_keywords (
+    oracle_id TEXT NOT NULL,
+    keyword   TEXT NOT NULL
+);
+CREATE INDEX IF NOT EXISTS idx_card_keywords_kw ON card_keywords(keyword);
+CREATE INDEX IF NOT EXISTS idx_card_keywords_oid ON card_keywords(oracle_id);
+
+-- One row per printing (default-language bulk).
+CREATE TABLE IF NOT EXISTS printings (
+    scryfall_id      TEXT PRIMARY KEY,
+    oracle_id        TEXT NOT NULL,
+    set_code         TEXT NOT NULL DEFAULT '',
+    collector_number TEXT NOT NULL DEFAULT '',
+    finishes         TEXT NOT NULL DEFAULT '',   -- comma-joined, e.g. "nonfoil,foil"
+    rarity           TEXT NOT NULL DEFAULT '',
+    image_uri        TEXT NOT NULL DEFAULT ''
+);
+CREATE INDEX IF NOT EXISTS idx_printings_oid ON printings(oracle_id);
+
+-- Secondary trigram FTS index over names (typo-tolerant fallback; the primary
+-- interactive search is the in-memory nucleo matcher).
+CREATE VIRTUAL TABLE IF NOT EXISTS oracle_names_fts
+    USING fts5(name, oracle_id UNINDEXED, tokenize = 'trigram');