feat(33-02): generate migration for market_prices, community_prices tables

- CREATE TABLE market_prices with unique(global_item_id, market, currency)
- CREATE TABLE community_prices with unique(global_item_id, user_id, source_type)
- ALTER TABLE items ADD COLUMN price_currency
- ALTER TABLE thread_candidates ADD COLUMN found_price_cents, found_price_currency, found_price_date
- Note: db:push requires running PostgreSQL — apply on deployment

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

drizzle-pg/meta/_journal.json

@@ -43,6 +43,13 @@
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       "tag": "0005_true_green_goblin",
       "breakpoints": true
+    },
+    {
+      "idx": 6,
+      "version": "7",
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+      "tag": "0006_remarkable_susan_delgado",
+      "breakpoints": true
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   ]
 }