feat(12-01): add migration 0008 for offer tier schema + idempotent push script

- Hand-write 0008_offer_tier_schema.sql: additive ALTER TABLE ADD COLUMN IF NOT EXISTS for offer_macros/offer_micros, guarded DO-block CHECK constraint on tier_letter, CREATE TABLE IF NOT EXISTS offer_tier_services + index
- Append journal entry for 0008_offer_tier_schema following the 0006 entry shape
- Add scripts/push-12-offer-tier-schema.ts: idempotent push script with PRODUCTION DEPLOY NOTE — BLOCKING step for Plan 02 (SSH+docker exec) before Wave 3 query layer

src/db/migrations/0008_offer_tier_schema.sql

@@ -0,0 +1,44 @@
+-- Phase 12: Offer Editor — additive schema for tier designations, public pricing,
+-- archive flag, category/ticket dimensions, structured transformation promise, and
+-- tier<->services junction. All statements additive/idempotent. No drops/truncates
+-- (Data Safety LOCKED).
+
+-- offer_macros: archive flag + short description + category/ticket dimensions +
+-- structured transformation promise
+ALTER TABLE offer_macros ADD COLUMN IF NOT EXISTS description text;
+ALTER TABLE offer_macros ADD COLUMN IF NOT EXISTS category text;
+ALTER TABLE offer_macros ADD COLUMN IF NOT EXISTS ticket text;
+ALTER TABLE offer_macros ADD COLUMN IF NOT EXISTS is_archived boolean NOT NULL DEFAULT false;
+ALTER TABLE offer_macros ADD COLUMN IF NOT EXISTS cliente_ideale text;
+ALTER TABLE offer_macros ADD COLUMN IF NOT EXISTS risultato text;
+ALTER TABLE offer_macros ADD COLUMN IF NOT EXISTS tempo text;
+ALTER TABLE offer_macros ADD COLUMN IF NOT EXISTS pain text;
+ALTER TABLE offer_macros ADD COLUMN IF NOT EXISTS metodo text;
+
+-- offer_micros: tier designation (A/B/C) + manual public price
+ALTER TABLE offer_micros ADD COLUMN IF NOT EXISTS tier_letter text;
+ALTER TABLE offer_micros ADD COLUMN IF NOT EXISTS public_price numeric(10, 2);
+
+-- CHECK constraint for tier_letter, added separately so the ADD COLUMN above stays
+-- idempotent even if the constraint already exists (guarded via DO block).
+DO $$
+BEGIN
+  IF NOT EXISTS (
+    SELECT 1 FROM pg_constraint WHERE conname = 'offer_micros_tier_letter_check'
+  ) THEN
+    ALTER TABLE offer_micros
+      ADD CONSTRAINT offer_micros_tier_letter_check
+      CHECK (tier_letter IS NULL OR tier_letter IN ('A', 'B', 'C'));
+  END IF;
+END $$;
+
+-- New junction table: tier (offer_micros) <-> unified services catalog.
+-- Additive replacement for legacy offer_micro_services (untouched, points to offer_services).
+CREATE TABLE IF NOT EXISTS offer_tier_services (
+  tier_id text NOT NULL REFERENCES offer_micros(id) ON DELETE CASCADE,
+  service_id text NOT NULL REFERENCES services(id) ON DELETE CASCADE,
+  created_at timestamp with time zone DEFAULT now() NOT NULL,
+  PRIMARY KEY (tier_id, service_id)
+);
+
+CREATE INDEX IF NOT EXISTS offer_tier_services_tier_idx ON offer_tier_services USING btree (tier_id);

src/db/migrations/meta/_journal.json

@@ -22,6 +22,13 @@
       "when": 1781442000000,
       "tag": "0006_add_tags_table",
       "breakpoints": true
+    },
+    {
+      "idx": 8,
+      "version": "7",
+      "when": 1781700000000,
+      "tag": "0008_offer_tier_schema",
+      "breakpoints": true
     }
   ]
 }