feat(validations): merchant (bar/lavazh) ticket validations end-to-end

In-park merchants discharge customers' parking: a merchant user scans the
ticket on their device (/validate; validation:create + program↔user binding)
and applies their program — comp / first-N-minutes free / amount-off (capped,
typed at scan) / percent. All money stays at the booth: the quote folds live
validations in a canonical order (timeCredit → percent → fixed → comp, net
floors at 0, Σ lines ≡ gross − net), the payment records gross/discount and
CONSUMES the validation ids (an overstay's fresh period never re-applies
them), the receipt prints the gross → lines → net story, and the Z/X-report
carries discountTotalMinor leakage. Every apply/void is a signed, attributed
ledger event (refId = append-only void); program config is /setup/site master
data (Bar/Lavazh checkboxes + right-column panel, tabs when both) whose saves
sign config_change. Migration 0024 + reset-db drift-guard entries; 8 route
integration tests + priceSession fold suite.

See wiki/concepts/validation-discounts.md for the full design record.

Claude-Session: https://claude.ai/code/session_01YYkpEsLmoQPaize5ec3oUm

apps/web/src/lib/i18n/en.ts

@@ -65,6 +65,7 @@ export const en: Catalog = {
     logs: "Logs",
     backup: "Backup",
     profile: "Profile",
+    validate: "Validations",
   },
   drawer: {
     stateTitle: "Drawer now",
@@ -230,6 +231,7 @@ export const en: Catalog = {
     evtCashOut: "PAY-OUT",
     evtCashReview: "REVIEW",
     evtConfigChange: "CONFIG",
+    evtValidation: "VALIDATION",
     decision: { authorize: "authorized", deny: "denied" },
     evtAnomaly: "ANOMALY",
     evtRefused: "REFUSED",
@@ -735,6 +737,51 @@ export const en: Catalog = {
     fieldPhone: "Phone",
     fieldEmail: "Email",
   },
+  // Merchant validations (bar / lavazh) — the /setup/site panel, the merchant's
+  // /validate screen, and the booth-modal discount lines. See validation-discounts.md.
+  val: {
+    // /setup/site
+    sectionTitle: "Merchant validations",
+    sectionHint: "An in-park merchant (bar / car-wash) scans the customer's ticket and grants a parking discount — payment and the receipt always stay at the booth.",
+    enableBar: "Bar",
+    enableLavazh: "Car wash",
+    labelName: "Receipt label",
+    labelNamePh: "e.g. Car wash — first hour free",
+    mode: "Discount type",
+    modeComp: "Parking fully free",
+    modeTimeCredit: "First minutes free",
+    modeFixed: "Amount off (typed at scan)",
+    modePercent: "Percent off",
+    minutes: "Free minutes",
+    percent: "Percent (%)",
+    maxAmount: "Cap per validation",
+    maxPerDay: "Max validations per day (blank = unlimited)",
+    users: "Validating users",
+    usersHint: "Only the selected users (whose role grants validation:create) can apply this program from their device.",
+    noUsers: "No users in the system — create one under Users.",
+    saved: "Saved.",
+    // /validate (the merchant screen)
+    title: "Ticket validation",
+    scanPrompt: "Scan or type the ticket number",
+    lookup: "Look up",
+    entry: "Entry:",
+    notFound: "No ticket found with this number.",
+    closed: "The ticket is closed (exited or voided).",
+    subscription: "This is a subscriber entry — not validatable.",
+    amountLabel: "Discount amount",
+    amountHint: "max {{max}}",
+    apply: "Apply validation",
+    applied: "Validation applied.",
+    existing: "Validations on this ticket",
+    voided: "voided",
+    used: "used in a payment",
+    void: "Void",
+    confirmVoid: "Void this validation?",
+    noPrograms: "You have no validation program bound to you — contact the administrator.",
+    // booth pay modal / receipts
+    gross: "Fee",
+    discount: "Discount",
+  },
   users: {
     title: "Users",
     add: "+ Add user",