docs(33): add summaries for plans 01 and 02 (wave 1 complete)

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

.planning/phases/33-currency-system/33-02-SUMMARY.md

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+# Plan 33-02 Summary
+
+**Status:** Complete
+**Completed:** 2026-04-13
+
+## What Was Built
+
+Database migration for the new market pricing schema.
+
+### Key Changes
+- Generated migration `0006_remarkable_susan_delgado.sql` with Drizzle Kit
+- CREATE TABLE market_prices with foreign keys and unique constraint
+- CREATE TABLE community_prices with foreign keys and unique constraint
+- ALTER TABLE items ADD COLUMN price_currency (default 'EUR')
+- ALTER TABLE thread_candidates ADD COLUMN found_price_cents, found_price_currency, found_price_date
+
+### Key Files Created
+- `drizzle-pg/0006_remarkable_susan_delgado.sql` — Migration SQL
+- `drizzle-pg/meta/0006_snapshot.json` — Schema snapshot
+
+## Self-Check: PASSED
+
+- [x] Migration SQL contains CREATE TABLE market_prices
+- [x] Migration SQL contains CREATE TABLE community_prices
+- [x] Migration SQL contains ALTER TABLE items ADD COLUMN price_currency
+- [x] Migration SQL contains ALTER TABLE thread_candidates ADD COLUMN found_price_cents
+
+## Notes
+- db:push requires a running PostgreSQL instance — migration will be applied on deployment
+- Migration is additive only (new tables, new nullable columns) — no data migration needed