Merge branch 'dev' into stage

apps/server/src/routes/shift.ts

@@ -63,7 +63,10 @@ export async function shiftRoutes(app: FastifyInstance, shift: ShiftService): Pr
     const from = canSeeAll ? q.from?.trim() || undefined : undefined;
     const to = canSeeAll ? q.to?.trim() || undefined : undefined;
     const shifts = shift.listShifts({ operator, from, to });
-    return { shifts, scope: canSeeAll ? "all" : "self" };
+    // Admins also get the distinct operator list (unfiltered) for the filter
+    // dropdown — operators don't see other names, so it's scope-gated.
+    if (canSeeAll) return { shifts, scope: "all", operators: shift.listOperators() };
+    return { shifts, scope: "self" };
   });
 
   // NB: drawer cash movements (record/review) moved to routes/drawer.ts (2026-07-01) — the

apps/server/src/routes/tariff-drafts.test.ts

@@ -0,0 +1,177 @@
+import { afterEach, beforeEach, describe, expect, it } from "vitest";
+import { createTestDb } from "@parking/db/testing";
+import { type Db } from "@parking/db";
+import type { FastifyInstance } from "fastify";
+import { buildServer } from "../server.js";
+import { seedUser, login } from "../test-helpers.js";
+
+// Tariff-lab drafts: the MUTABLE experiment scratchpad next to the immutable
+// published versions. The contract under test: drafts are validated + tz-stamped on
+// save exactly like a publish (so "publish this draft" can never fail on a card that
+// saved fine), mutations need tariff:update, and publishing a draft goes through the
+// normal immutable-version path untouched.
+
+let db: Db;
+let close: () => void;
+let app: FastifyInstance;
+
+beforeEach(async () => {
+  const t = createTestDb();
+  db = t.db;
+  close = t.close;
+  app = await buildServer({ db });
+  await app.ready();
+});
+afterEach(async () => {
+  await app.close();
+  close();
+});
+
+const V1_STRUCTURE = {
+  gracePeriodEntryMin: 5,
+  incrementMin: 60,
+  lostTicketMinor: 2000,
+  gracePeriodExitMin: 10,
+  overstay: "reprice",
+  blocks: [{ uptoMin: null, priceMinorPerIncrement: 200 }],
+  dailyCapMinor: null,
+};
+
+// A V2 card with a night package — tz left blank on purpose: the server must stamp it.
+const V2_STRUCTURE = {
+  version: 2,
+  tz: "",
+  gracePeriodEntryMin: 5,
+  incrementMin: 60,
+  lostTicketMinor: 2000,
+  gracePeriodExitMin: 10,
+  overstay: "reprice",
+  defaultCard: { name: "default", priority: 0, blocks: [{ uptoMin: null, priceMinorPerIncrement: 200 }], dailyCapMinor: null },
+  windowedCards: [{ name: "night", priority: 10, window: { fromHour: "20:00", toHour: "07:00" }, packageMinor: 40000 }],
+};
+
+async function editor() {
+  const { username, password } = await seedUser(db, {
+    username: "editor",
+    roleId: "editor",
+    permissions: ["tariff:read", "tariff:update"],
+  });
+  return login(app, username, password);
+}
+
+describe("tariff drafts", () => {
+  it("requires auth", async () => {
+    const res = await app.inject({ method: "GET", url: "/api/tariff/drafts" });
+    expect(res.statusCode).toBe(401);
+  });
+
+  it("a tariff:read-only user can list but not create", async () => {
+    const { username, password } = await seedUser(db, {
+      username: "viewer",
+      roleId: "viewer",
+      permissions: ["tariff:read"],
+    });
+    const { cookie, csrf } = await login(app, username, password);
+
+    const list = await app.inject({ method: "GET", url: "/api/tariff/drafts", headers: { cookie } });
+    expect(list.statusCode).toBe(200);
+    expect(list.json().drafts).toEqual([]);
+
+    const create = await app.inject({
+      method: "POST",
+      url: "/api/tariff/drafts",
+      headers: { cookie, "x-csrf-token": csrf },
+      payload: { name: "x", currency: "ALL", structure: V1_STRUCTURE },
+    });
+    expect(create.statusCode).toBe(403);
+  });
+
+  it("create → list → update → delete roundtrip", async () => {
+    const { cookie, csrf } = await editor();
+    const headers = { cookie, "x-csrf-token": csrf };
+
+    const create = await app.inject({
+      method: "POST",
+      url: "/api/tariff/drafts",
+      headers,
+      payload: { name: "Winter proposal", currency: "all", structure: V1_STRUCTURE },
+    });
+    expect(create.statusCode).toBe(201);
+    const draft = create.json();
+    expect(draft.name).toBe("Winter proposal");
+    expect(draft.currency).toBe("ALL"); // normalised to upper case
+    expect(draft.createdBy).toBe("editor");
+
+    const list = await app.inject({ method: "GET", url: "/api/tariff/drafts", headers: { cookie } });
+    expect(list.json().drafts).toHaveLength(1);
+
+    const update = await app.inject({
+      method: "PUT",
+      url: `/api/tariff/drafts/${draft.id}`,
+      headers,
+      payload: { name: "Winter v2", currency: "ALL", structure: V1_STRUCTURE },
+    });
+    expect(update.statusCode).toBe(200);
+    expect(update.json().name).toBe("Winter v2");
+
+    const del = await app.inject({ method: "DELETE", url: `/api/tariff/drafts/${draft.id}`, headers });
+    expect(del.statusCode).toBe(204);
+    const after = await app.inject({ method: "GET", url: "/api/tariff/drafts", headers: { cookie } });
+    expect(after.json().drafts).toEqual([]);
+  });
+
+  it("rejects an invalid structure with problems (validated like a publish)", async () => {
+    const { cookie, csrf } = await editor();
+    const res = await app.inject({
+      method: "POST",
+      url: "/api/tariff/drafts",
+      headers: { cookie, "x-csrf-token": csrf },
+      payload: { name: "broken", currency: "ALL", structure: { ...V1_STRUCTURE, blocks: [] } },
+    });
+    expect(res.statusCode).toBe(400);
+    expect(res.json().problems?.length).toBeGreaterThan(0);
+  });
+
+  it("stamps the site timezone on a V2 draft, and the draft simulates + publishes as-is", async () => {
+    const { cookie, csrf } = await editor();
+    const headers = { cookie, "x-csrf-token": csrf };
+
+    const create = await app.inject({
+      method: "POST",
+      url: "/api/tariff/drafts",
+      headers,
+      payload: { name: "Night package", currency: "ALL", structure: V2_STRUCTURE },
+    });
+    expect(create.statusCode).toBe(201);
+    const draft = create.json();
+    expect(draft.structure.tz).toBe("Europe/Tirane");
+
+    // The lab prices the draft by sending its stored structure inline.
+    const sim = await app.inject({
+      method: "POST",
+      url: "/api/tariff/simulate",
+      headers,
+      payload: {
+        enteredAt: "2026-07-03T21:00:00.000+02:00",
+        asOf: "2026-07-03T23:00:00.000+02:00",
+        structure: draft.structure,
+        currency: draft.currency,
+      },
+    });
+    expect(sim.statusCode).toBe(200);
+    expect(sim.json().pricing.amountMinor).toBe(40000); // one night package
+
+    // "Publish this draft" = the normal immutable-version path with the draft's card;
+    // the draft's name rides along as the version's optional label.
+    const publish = await app.inject({
+      method: "POST",
+      url: "/api/tariff/versions",
+      headers,
+      payload: { currency: draft.currency, structure: draft.structure, name: draft.name },
+    });
+    expect(publish.statusCode).toBe(201);
+    const state = await app.inject({ method: "GET", url: "/api/tariff", headers: { cookie } });
+    expect(state.json().active?.name).toBe("Night package");
+    expect(state.json().active?.structure?.windowedCards?.[0]?.packageMinor).toBe(40000);
+  });
+});

apps/server/src/routes/tariffs.ts

@@ -1,6 +1,6 @@
 import { randomUUID } from "node:crypto";
 import type { FastifyInstance } from "fastify";
-import { and, desc, eq, isNull, ledgerEvents, siteConfig, tariffVersions, tariffs, type Db } from "@parking/db";
+import { and, desc, eq, isNull, ledgerEvents, siteConfig, tariffDrafts, tariffVersions, tariffs, type Db } from "@parking/db";
 import {
   computeFee,
   isTariffV2,
@@ -25,10 +25,19 @@ interface PublishBody {
   structure: TariffStructure;
   /** When this version takes effect (ISO-8601). Defaults to now. */
   effectiveFrom?: string;
+  /** Optional human label (e.g. carried from the lab draft being published). */
+  name?: string;
 }
 
 const SITE_TARIFF_NAME = "Site tariff";
 
+/** Body for saving a lab draft (create + update share the shape). */
+interface DraftBody {
+  name: string;
+  currency: string;
+  structure: TariffStructure;
+}
+
 /** Body for POST /api/tariff/simulate — price a hypothetical session, no ledger write.
  *  Provide a structure source (one of): `tariffVersionId`, inline `structure`, or
  *  neither (uses the active version). */
@@ -80,19 +89,14 @@ export async function tariffRoutes(app: FastifyInstance, db: Db): Promise<void>
     "/api/tariff/versions",
     { preHandler: writeGuard },
     async (req, reply) => {
-      const { currency, structure, effectiveFrom } = req.body ?? ({} as PublishBody);
+      const { currency, structure, effectiveFrom, name } = req.body ?? ({} as PublishBody);
       if (!currency || typeof currency !== "string" || currency.length < 3) {
         return reply.code(400).send({ error: "currency (ISO 4217) required" });
       }
       // For a windowed (V2) structure, stamp the wall-clock timezone from SITE config
       // (not the client) BEFORE validating — so the frozen tz is authoritative and the
       // validation that requires tz passes. A V1 (bare) structure is left untouched.
-      let toStore: TariffStructure = structure;
-      if (structure && isTariffV2(structure)) {
-        const cfg = db.select().from(siteConfig).where(eq(siteConfig.id, 1)).get();
-        const tz = cfg?.timezone && cfg.timezone.length > 0 ? cfg.timezone : DEFAULT_TZ;
-        toStore = { ...structure, tz };
-      }
+      const toStore = stampSiteTz(structure);
 
       const problems = validateTariffStructure(toStore);
       if (problems.length) {
@@ -128,6 +132,7 @@ export async function tariffRoutes(app: FastifyInstance, db: Db): Promise<void>
       const row = {
         id,
         tariffId,
+        name: typeof name === "string" && name.trim() ? name.trim() : null,
         effectiveFrom: effective,
         currency,
         structure: toStore as unknown as Record<string, unknown>,
@@ -230,6 +235,92 @@ export async function tariffRoutes(app: FastifyInstance, db: Db): Promise<void>
     },
   );
 
+  // --- Lab drafts ---------------------------------------------------------------
+  // The lab's scratchpad: MUTABLE experimental rate cards (see tariff_drafts in the
+  // schema for why mutability is safe here — a draft prices nothing and signs
+  // nothing). Saved drafts are validated + tz-stamped exactly like a publish, so the
+  // simulator can always price them and "publish this draft" can never surprise the
+  // admin with a card that saved fine but won't go live. Publishing a draft is just
+  // POST /api/tariff/versions with the draft's structure — same guard, same
+  // validation, same immutability.
+  app.get("/api/tariff/drafts", { preHandler: readGuard }, async () => {
+    const drafts = db.select().from(tariffDrafts).orderBy(desc(tariffDrafts.updatedAt)).all();
+    return { drafts };
+  });
+
+  app.post<{ Body: DraftBody }>("/api/tariff/drafts", { preHandler: writeGuard }, async (req, reply) => {
+    const parsed = parseDraftBody(req.body);
+    if ("error" in parsed) return reply.code(400).send(parsed);
+    const now = new Date().toISOString();
+    const row = {
+      id: randomUUID(),
+      name: parsed.name,
+      currency: parsed.currency,
+      structure: parsed.structure as unknown as Record<string, unknown>,
+      createdBy: req.user?.username ?? null,
+      createdAt: now,
+      updatedAt: now,
+    };
+    db.insert(tariffDrafts).values(row).run();
+    return reply.code(201).send(row);
+  });
+
+  app.put<{ Params: { id: string }; Body: DraftBody }>(
+    "/api/tariff/drafts/:id",
+    { preHandler: writeGuard },
+    async (req, reply) => {
+      const existing = db.select().from(tariffDrafts).where(eq(tariffDrafts.id, req.params.id)).get();
+      if (!existing) return reply.code(404).send({ error: "draft not found" });
+      const parsed = parseDraftBody(req.body);
+      if ("error" in parsed) return reply.code(400).send(parsed);
+      const patch = {
+        name: parsed.name,
+        currency: parsed.currency,
+        structure: parsed.structure as unknown as Record<string, unknown>,
+        updatedAt: new Date().toISOString(),
+      };
+      db.update(tariffDrafts).set(patch).where(eq(tariffDrafts.id, existing.id)).run();
+      return { ...existing, ...patch };
+    },
+  );
+
+  app.delete<{ Params: { id: string } }>(
+    "/api/tariff/drafts/:id",
+    { preHandler: writeGuard },
+    async (req, reply) => {
+      const existing = db.select().from(tariffDrafts).where(eq(tariffDrafts.id, req.params.id)).get();
+      if (!existing) return reply.code(404).send({ error: "draft not found" });
+      db.delete(tariffDrafts).where(eq(tariffDrafts.id, existing.id)).run();
+      return reply.code(204).send();
+    },
+  );
+
+  /** Validate + normalise a draft save body; tz-stamps V2 structures like a publish. */
+  function parseDraftBody(
+    body: DraftBody | undefined,
+  ): { name: string; currency: string; structure: TariffStructure } | { error: string; problems?: string[] } {
+    const b = body ?? ({} as DraftBody);
+    const name = (b.name ?? "").trim();
+    if (!name) return { error: "name required" };
+    const currency = (b.currency ?? "").trim().toUpperCase();
+    if (currency.length < 3) return { error: "currency (ISO 4217) required" };
+    const structure = stampSiteTz(b.structure);
+    const problems = validateTariffStructure(structure);
+    if (problems.length) return { error: "invalid tariff structure", problems };
+    return { name, currency, structure };
+  }
+
+  /** Stamp a V2 structure's frozen wall-clock timezone from SITE config (never the
+   *  client); a V1 (bare) structure passes through untouched. */
+  function stampSiteTz(structure: TariffStructure): TariffStructure {
+    if (structure && isTariffV2(structure)) {
+      const cfg = db.select().from(siteConfig).where(eq(siteConfig.id, 1)).get();
+      const tz = cfg?.timezone && cfg.timezone.length > 0 ? cfg.timezone : DEFAULT_TZ;
+      return { ...structure, tz };
+    }
+    return structure;
+  }
+
   /** The tariff version in force at a given instant (latest effectiveFrom ≤ when). */
   function tariffVersionIdFor(whenIso: string): string | null {
     const tariffId = ensureSiteTariff();

apps/server/src/shift-service.test.ts

@@ -234,4 +234,11 @@ describe("close signs a Z-report; listShifts reads it back", () => {
     await shift.open("bob"); await shift.close("bob");
     expect(shift.listShifts({ operator: "alice" }).map((s) => s.operator)).toEqual(["alice"]);
   });
+
+  it("listOperators: distinct + sorted, includes the OPEN shift's operator", async () => {
+    await shift.open("bob"); await shift.close("bob");
+    await shift.open("bob"); await shift.close("bob"); // twice — must stay distinct
+    await shift.open("alice"); // open, no z-report yet
+    expect(shift.listOperators()).toEqual(["alice", "bob"]);
+  });
 });

apps/server/src/shift-service.ts

@@ -177,6 +177,28 @@ export class ShiftService {
    * The open shift (no z_report yet) is intentionally excluded — it's not a
    * completed accountability period. Use `currentOpenShift()` for the live one.
    */
+  /**
+   * Every operator that HAS a shift (closed z_reports + the open one, if any),
+   * distinct + sorted — feeds the admin filter dropdown so it can only ever ask
+   * for an operator that exists (the filter is an exact username match).
+   */
+  listOperators(): string[] {
+    const rows = this.#db
+      .select()
+      .from(ledgerEvents)
+      .where(eq(ledgerEvents.type, "shift_z_report"))
+      .all();
+    const names = new Set<string>();
+    for (const r of rows) {
+      const op = ((r.payload ?? {}) as { operator?: string }).operator ?? r.identity;
+      if (op) names.add(op);
+    }
+    const open = this.currentOpenShift();
+    const openOp = open ? (((open.payload ?? {}) as { operator?: string }).operator ?? open.identity) : null;
+    if (openOp) names.add(openOp);
+    return [...names].sort((a, b) => a.localeCompare(b));
+  }
+
   listShifts(opts: { operator?: string; from?: string; to?: string } = {}): ShiftSummary[] {
     const rows = this.#db
       .select()

apps/web/index.html

@@ -4,6 +4,10 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <link rel="icon" href="data:," />
+    <!-- Self-hosted primary face (offline appliance — no webfont CDN). Preload the
+         two weights on every screen so first paint doesn't flash the fallback. -->
+    <link rel="preload" href="/fonts/chakra-petch/chakra-petch-latin-400.woff2" as="font" type="font/woff2" crossorigin />
+    <link rel="preload" href="/fonts/chakra-petch/chakra-petch-latin-600.woff2" as="font" type="font/woff2" crossorigin />
     <title>Parking System</title>
   </head>
   <body>

apps/web/public/fonts/chakra-petch/OFL.txt

@@ -0,0 +1,93 @@
+Copyright 2018 The Chakra Petch Project Authors (https://github.com/m4rc1e/Chakra-Petch.git)
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at:
+http://scripts.sil.org/OFL
+
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded, 
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components,
+in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the corresponding
+Copyright Holder. This restriction only applies to the primary font name as
+presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created
+using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.

apps/web/src/ShiftsHistory.tsx

@@ -1,6 +1,6 @@
 import { useEffect, useState } from "react";
 import { useTranslation } from "react-i18next";
-import { useQuery } from "@tanstack/react-query";
+import { keepPreviousData, useQuery } from "@tanstack/react-query";
 import {
   closeShift,
   fetchEvents,
@@ -105,9 +105,17 @@ export function ShiftsHistory({ user, canManage = false }: { user: SessionUser |
     to: range?.to ? new Date(`${range.to}T23:59:59`).toISOString() : undefined,
   };
 
-  const q = useQuery({ queryKey: ["shifts", applied], queryFn: () => fetchShifts(applied) });
+  // keepPreviousData: every filter change makes a NEW query key; without it the
+  // data (and with it `scope`) goes undefined for the fetch round-trip, which
+  // unmounted the admin filter controls mid-interaction and blanked the list.
+  const q = useQuery({
+    queryKey: ["shifts", applied],
+    queryFn: () => fetchShifts(applied),
+    placeholderData: keepPreviousData,
+  });
   const isAdmin = q.data?.scope === "all";
   const closed = q.data?.shifts ?? [];
+  const operators = q.data?.operators ?? [];
 
   // The current/open shift sits at the TOP of the list (when present + visible to me).
   const list: (ShiftSummary & { open?: boolean })[] = current && (isMine || isAdmin) ? [current, ...closed] : closed;
@@ -169,7 +177,14 @@ export function ShiftsHistory({ user, canManage = false }: { user: SessionUser |
         {isAdmin && (
           <div className="field">
             <span className="label">{t("shifts.operator")}</span>
-            <input className="input w-44" value={operator} onChange={(e) => setOperator(e.target.value)} placeholder={t("shifts.allOperators")} />
+            {/* A select over operators that HAVE shifts — the server filter is an
+                exact username match, so free text could only miss. */}
+            <select className="input w-44" value={operator} onChange={(e) => setOperator(e.target.value)}>
+              <option value="">{t("shifts.allOperators")}</option>
+              {operators.map((op) => (
+                <option key={op} value={op}>{op}</option>
+              ))}
+            </select>
           </div>
         )}
       </div>

apps/web/src/SubscriptionPlansManager.tsx

@@ -14,6 +14,7 @@ import {
   type SubscriptionPlan,
 } from "./api.js";
 import { Modal } from "./ui/Modal.js";
+import { currencyOptions } from "./lib/currencies.js";
 
 // Admin-only subscription PLAN catalog. Plans are admin-composed, versioned config the
 // operator sells from (so the operator never types a price). Editing a plan PUBLISHES A
@@ -348,7 +349,11 @@ export function SubscriptionPlansManager() {
               <label className="label">{t("plans.pricePer")}</label>
               <span className="flex items-center gap-2">
                 <input className="input w-28" value={form.priceMajor} inputMode="decimal" onChange={(e) => setForm((f) => f && { ...f, priceMajor: e.target.value })} placeholder="e.g. 800" />
-                <input className="input w-16" value={form.currency} onChange={(e) => setForm((f) => f && { ...f, currency: e.target.value })} />
+                <select className="input w-auto" value={form.currency} onChange={(e) => setForm((f) => f && { ...f, currency: e.target.value })}>
+                  {currencyOptions(form.currency).map((c) => (
+                    <option key={c} value={c}>{c}</option>
+                  ))}
+                </select>
                 <span className="text-[0.75rem] text-term-muted">/ {t(PERIOD_KEY[form.period])}</span>
               </span>
             </div>

apps/web/src/TariffComposer.tsx

@@ -1,267 +1,23 @@
 import { useEffect, useState } from "react";
 import { useTranslation } from "react-i18next";
-import {
-  ApiError,
-  fetchTariff,
-  isTariffV2,
-  publishTariffVersion,
-  type TariffBlock,
-  type TariffCard,
-  type TariffStep,
-  type TariffStructure,
-  type TariffState,
-} from "./api.js";
+import { ApiError, fetchTariff, publishTariffVersion, type TariffState } from "./api.js";
+import { TariffEditorForm, emptyForm, formFromActive, toStructure, type FormState } from "./TariffEditorForm.js";
 
-// Tariff composer — the admin builds + edits the rate card at runtime. Publishing
+// Tariff composer — the admin edits + publishes the LIVE rate card. Publishing
 // creates a new IMMUTABLE version (the active card); old versions are kept so past
-// sessions reprice correctly. Amounts are entered in major units (e.g. euros) for
-// usability and converted to integer minor units on submit. See wiki/concepts/tariff.md.
-
-// Editable form mirror of TariffStructure, but money in major-unit strings.
-// Blocks are edited as a DURATION in hours ("this band lasts N hours") — the
-// owner thinks "first 2 hours, then next 3 hours", not in cumulative minutes.
-// The LAST block is always open-ended ("thereafter"): its hours field is unused
-// and it has no bound. On submit, per-block hours accumulate into the engine's
-// cumulative `uptoMin` (minutes), and the last block emits uptoMin: null.
-interface BlockForm {
-  hours: string; // duration of THIS band, in hours (ignored for the last block)
-  price: string; // major units, e.g. "2.00"
-}
-// One STEPPED ("up-to") row: "a stay up to N hours costs TOTAL". The owner enters the
-// matrix verbatim (totals, not marginal rates). See wiki/concepts/tariff.md.
-interface StepForm {
-  hours: string; // inclusive upper bound of this tier, in hours (e.g. "3")
-  total: string; // TOTAL major units for a stay within this tier (e.g. "5.00")
-}
-// A pricing body the form edits: a flat rate, a marginal block ladder, or a stepped
-// (up-to) total-by-duration table.
-interface PricingForm {
-  mode: "ladder" | "flat" | "stepped";
-  flat: string; // major units (used when mode==="flat")
-  blocks: BlockForm[]; // hours-based ladder (used when mode==="ladder")
-  steps: StepForm[]; // up-to tiers (used when mode==="stepped")
-  dailyCap: string; // "" = no cap (ladder only)
-}
-// An optional time/category TIER (a V2 windowed card). Absent windows = unconstrained.
-interface TierForm {
-  name: string;
-  priority: string;
-  category: string; // "" = applies to all categories
-  dow: number[]; // selected days 0..6; empty = every day
-  fromHour: string; // "" = all day
-  toHour: string;
-  dateFrom: string; // "" = unbounded
-  dateTo: string;
-  pricing: PricingForm;
-}
-interface FormState {
-  currency: string;
-  gracePeriodEntryMin: string;
-  incrementMin: string;
-  lostTicket: string;
-  gracePeriodExitMin: string;
-  // The default (always-active) card — its own flat/ladder body + daily cap.
-  base: PricingForm;
-  // Optional time/category tiers. Empty ⇒ a bare V1 structure is published.
-  tiers: TierForm[];
-}
-
-const toMinor = (major: string): number => Math.round(parseFloat(major || "0") * 100);
-const toMajor = (minor: number): string => (minor / 100).toFixed(2);
-
-function emptySteps(): StepForm[] {
-  return [
-    { hours: "1", total: "2.00" },
-    { hours: "3", total: "5.00" },
-  ];
-}
-function emptyLadder(): PricingForm {
-  return {
-    mode: "ladder",
-    flat: "0.00",
-    dailyCap: "",
-    blocks: [{ hours: "1", price: "2.00" }, { hours: "", price: "1.00" }],
-    steps: emptySteps(),
-  };
-}
-function emptyTier(): TierForm {
-  return {
-    name: "",
-    priority: "10",
-    category: "",
-    dow: [],
-    fromHour: "",
-    toHour: "",
-    dateFrom: "",
-    dateTo: "",
-    pricing: { ...emptyLadder(), blocks: [{ hours: "", price: "1.00" }] },
-  };
-}
-
-function emptyForm(): FormState {
-  return {
-    currency: "EUR",
-    gracePeriodEntryMin: "15",
-    incrementMin: "60",
-    lostTicket: "20.00",
-    gracePeriodExitMin: "15",
-    base: emptyLadder(),
-    tiers: [],
-  };
-}
-
-// Convert a stored block ladder's cumulative `uptoMin` (minutes) into the per-band
-// hours the form edits. Open-ended last band has no hours. Legacy bounded tails still
-// load (shown as their own band).
-function blocksToForm(blocks: TariffBlock[]): BlockForm[] {
-  let prev = 0;
-  return blocks.map((b) => {
-    if (b.uptoMin == null) return { hours: "", price: toMajor(b.priceMinorPerIncrement) };
-    const hours = (b.uptoMin - prev) / 60;
-    prev = b.uptoMin;
-    return { hours: String(hours), price: toMajor(b.priceMinorPerIncrement) };
-  });
-}
-
-// A stored stepped table's `uptoMin` (minutes) → the per-tier hours the form edits.
-function stepsToForm(steps: TariffStep[]): StepForm[] {
-  return steps.map((s) => ({ hours: String(s.uptoMin / 60), total: toMajor(s.totalMinor) }));
-}
-
-// A stored card (V2) or bare-V1 body → the form's PricingForm (flat, ladder, or stepped).
-function pricingFromCard(c: {
-  flatMinor?: number;
-  blocks?: TariffBlock[];
-  steps?: TariffStep[];
-  dailyCapMinor?: number | null;
-}): PricingForm {
-  if (c.steps != null && c.steps.length > 0) {
-    return { mode: "stepped", flat: "0.00", dailyCap: "", blocks: emptyLadder().blocks, steps: stepsToForm(c.steps) };
-  }
-  if (c.flatMinor != null) {
-    return { mode: "flat", flat: toMajor(c.flatMinor), dailyCap: "", blocks: emptyLadder().blocks, steps: emptySteps() };
-  }
-  return {
-    mode: "ladder",
-    flat: "0.00",
-    dailyCap: c.dailyCapMinor == null ? "" : toMajor(c.dailyCapMinor),
-    blocks: blocksToForm(c.blocks ?? []),
-    steps: emptySteps(),
-  };
-}
-
-function tierFromCard(c: TariffCard): TierForm {
-  const w = c.window ?? {};
-  return {
-    name: c.name,
-    priority: String(c.priority),
-    category: c.category ?? "",
-    dow: w.dow ? [...w.dow] : [],
-    fromHour: w.fromHour ?? "",
-    toHour: w.toHour ?? "",
-    dateFrom: w.dateFrom ?? "",
-    dateTo: w.dateTo ?? "",
-    pricing: pricingFromCard(c),
-  };
-}
-
-function formFromActive(s: TariffState): FormState {
-  const v = s.active;
-  if (!v) return emptyForm();
-  const st = v.structure;
-  const common = {
-    currency: v.currency,
-    gracePeriodEntryMin: String(st.gracePeriodEntryMin),
-    incrementMin: String(st.incrementMin),
-    lostTicket: toMajor(st.lostTicketMinor),
-    gracePeriodExitMin: String(st.gracePeriodExitMin),
-  };
-  if (isTariffV2(st)) {
-    return { ...common, base: pricingFromCard(st.defaultCard), tiers: (st.windowedCards ?? []).map(tierFromCard) };
-  }
-  // V1: the bare ladder becomes the default card body; no tiers.
-  return { ...common, base: pricingFromCard(st), tiers: [] };
-}
-
-// Build a tariff card's pricing body (flat XOR ladder XOR stepped) from a PricingForm.
-function pricingToCardBody(p: PricingForm): Pick<TariffCard, "flatMinor" | "blocks" | "steps" | "dailyCapMinor"> {
-  if (p.mode === "flat") return { flatMinor: toMinor(p.flat) };
-  if (p.mode === "stepped") {
-    // Each row's `hours` IS the inclusive threshold (the matrix "up to N hours").
-    const steps: TariffStep[] = p.steps.map((s) => ({
-      uptoMin: Math.round(Number(s.hours || "0") * 60),
-      totalMinor: toMinor(s.total),
-    }));
-    return { steps };
-  }
-  // Accumulate each band's hours into cumulative uptoMin (min); last band open-ended.
-  const last = p.blocks.length - 1;
-  let cum = 0;
-  const blocks: TariffBlock[] = p.blocks.map((b, i) => {
-    if (i === last) return { uptoMin: null, priceMinorPerIncrement: toMinor(b.price) };
-    cum += Math.round(Number(b.hours || "0") * 60);
-    return { uptoMin: cum, priceMinorPerIncrement: toMinor(b.price) };
-  });
-  return { blocks, dailyCapMinor: p.dailyCap.trim() === "" ? null : toMinor(p.dailyCap) };
-}
-
-function tierToCard(tr: TierForm): TariffCard {
-  const window: TariffCard["window"] = {};
-  if (tr.dow.length > 0) window.dow = [...tr.dow].sort((a, b) => a - b);
-  if (tr.fromHour && tr.toHour) {
-    window.fromHour = tr.fromHour;
-    window.toHour = tr.toHour;
-  }
-  if (tr.dateFrom) window.dateFrom = tr.dateFrom;
-  if (tr.dateTo) window.dateTo = tr.dateTo;
-  const card: TariffCard = {
-    name: tr.name.trim() || "tier",
-    priority: Math.round(Number(tr.priority || "0")),
-    ...pricingToCardBody(tr.pricing),
-  };
-  if (tr.category.trim()) card.category = tr.category.trim();
-  if (Object.keys(window).length > 0) card.window = window;
-  return card;
-}
-
-function toStructure(f: FormState): TariffStructure {
-  const common = {
-    gracePeriodEntryMin: Math.round(Number(f.gracePeriodEntryMin)),
-    incrementMin: Math.round(Number(f.incrementMin)),
-    lostTicketMinor: toMinor(f.lostTicket),
-    gracePeriodExitMin: Math.round(Number(f.gracePeriodExitMin)),
-    overstay: "reprice" as const,
-  };
-  const baseBody = pricingToCardBody(f.base);
-
-  // NO tiers ⇒ publish a BARE V1 structure (back-compat: a site that never wants
-  // tiers gets exactly today's shape; the server leaves it untouched).
-  if (f.tiers.length === 0) {
-    if (f.base.mode === "stepped") {
-      // A stepped V1: the up-to table replaces the ladder (blocks empty, no cap).
-      return { ...common, blocks: [], steps: baseBody.steps ?? [], dailyCapMinor: null };
-    }
-    if (f.base.mode === "flat") {
-      // A flat V1: a single open-ended block at the flat rate (V1 has no flat field).
-      return { ...common, blocks: [{ uptoMin: null, priceMinorPerIncrement: toMinor(f.base.flat) }], dailyCapMinor: null };
-    }
-    return { ...common, blocks: baseBody.blocks ?? [], dailyCapMinor: baseBody.dailyCapMinor ?? null };
-  }
-
-  // Tiers present ⇒ V2. tz is stamped server-side from site config (left blank here).
-  return {
-    ...common,
-    version: 2,
-    tz: "",
-    defaultCard: { name: "default", priority: 0, ...baseBody },
-    windowedCards: f.tiers.map(tierToCard),
-  };
-}
+// sessions reprice correctly. The form machinery is shared with the Tariff Lab's
+// draft modal — see TariffEditorForm.tsx. To experiment without publishing, use the
+// lab (a draft only becomes real through this same publish path). See
+// wiki/concepts/tariff.md.
 
 export function TariffComposer() {
   const { t } = useTranslation();
   const [state, setState] = useState<TariffState | null>(null);
   const [form, setForm] = useState<FormState>(emptyForm);
+  // Optional label for the version about to be published. Deliberately NOT prefilled
+  // from the active version — a tweaked card republished under last season's name
+  // would mislabel the history.
+  const [versionName, setVersionName] = useState("");
   const [saving, setSaving] = useState(false);
   const [msg, setMsg] = useState<{ kind: "ok" | "err"; text: string } | null>(null);
 
@@ -274,70 +30,18 @@ export function TariffComposer() {
       .catch((e) => setMsg({ kind: "err", text: (e as Error).message }));
   }, []);
 
-  function set<K extends keyof FormState>(key: K, value: FormState[K]) {
-    setForm((f) => ({ ...f, [key]: value }));
-  }
-
-  // --- pricing-body editing (used by the default card AND each tier) ---
-  // `update` maps the old PricingForm to a new one; `target` selects which body:
-  // the base card, or tier index N.
-  function updatePricing(target: "base" | number, update: (p: PricingForm) => PricingForm) {
-    setForm((f) => {
-      if (target === "base") return { ...f, base: update(f.base) };
-      return { ...f, tiers: f.tiers.map((tr, j) => (j === target ? { ...tr, pricing: update(tr.pricing) } : tr)) };
-    });
-  }
-  function setBlock(target: "base" | number, i: number, patch: Partial<BlockForm>) {
-    updatePricing(target, (p) => ({ ...p, blocks: p.blocks.map((b, j) => (j === i ? { ...b, ...patch } : b)) }));
-  }
-  // Insert a bounded band just BEFORE the open-ended tail, so the last block stays open-ended.
-  function addBlock(target: "base" | number) {
-    updatePricing(target, (p) => {
-      const next = [...p.blocks];
-      next.splice(p.blocks.length - 1, 0, { hours: "1", price: "0.00" });
-      return { ...p, blocks: next };
-    });
-  }
-  function removeBlock(target: "base" | number, i: number) {
-    updatePricing(target, (p) => (i === p.blocks.length - 1 || p.blocks.length <= 1 ? p : { ...p, blocks: p.blocks.filter((_, j) => j !== i) }));
-  }
-  // --- stepped (up-to) editing (base card only) ---
-  function setStep(i: number, patch: Partial<StepForm>) {
-    updatePricing("base", (p) => ({ ...p, steps: p.steps.map((s, j) => (j === i ? { ...s, ...patch } : s)) }));
-  }
-  function addStep() {
-    updatePricing("base", (p) => ({ ...p, steps: [...p.steps, { hours: "", total: "0.00" }] }));
-  }
-  function removeStep(i: number) {
-    updatePricing("base", (p) => (p.steps.length <= 1 ? p : { ...p, steps: p.steps.filter((_, j) => j !== i) }));
-  }
-
-  // --- tier editing ---
-  function setTier(i: number, patch: Partial<TierForm>) {
-    setForm((f) => ({ ...f, tiers: f.tiers.map((tr, j) => (j === i ? { ...tr, ...patch } : tr)) }));
-  }
-  function addTier() {
-    setForm((f) => ({ ...f, tiers: [...f.tiers, emptyTier()] }));
-  }
-  function removeTier(i: number) {
-    setForm((f) => ({ ...f, tiers: f.tiers.filter((_, j) => j !== i) }));
-  }
-  function toggleDow(i: number, d: number) {
-    setForm((f) => ({
-      ...f,
-      tiers: f.tiers.map((tr, j) =>
-        j === i ? { ...tr, dow: tr.dow.includes(d) ? tr.dow.filter((x) => x !== d) : [...tr.dow, d] } : tr,
-      ),
-    }));
-  }
-
   async function publish() {
     setSaving(true);
     setMsg(null);
     try {
-      await publishTariffVersion({ currency: form.currency.trim().toUpperCase(), structure: toStructure(form) });
+      await publishTariffVersion({
+        currency: form.currency.trim().toUpperCase(),
+        structure: toStructure(form),
+        ...(versionName.trim() ? { name: versionName.trim() } : {}),
+      });
       const fresh = await fetchTariff();
       setState(fresh);
+      setVersionName("");
       setMsg({ kind: "ok", text: t("tariff.publishedOk") });
     } catch (e) {
       const text =
@@ -359,6 +63,7 @@ export function TariffComposer() {
         </p>
       ) : (
         <p className="mb-4 text-[0.75rem] text-term-muted">
+          {state.active.name ? `${state.active.name} — ` : ""}
           {t("tariff.activeSince", {
             date: new Date(state.active.effectiveFrom).toLocaleString(),
             count: state.versions.length,
@@ -366,114 +71,15 @@ export function TariffComposer() {
         </p>
       )}
 
-      <div className="card card-body grid grid-cols-[max-content_1fr] items-center gap-x-4 gap-y-2">
-        <label className="label">{t("tariff.currency")}</label>
-        <input className="input w-24" value={form.currency} onChange={(e) => set("currency", e.target.value)} maxLength={3} />
-        <label className="label">{t("tariff.freeEntryGrace")}</label>
-        <input className="input w-32" value={form.gracePeriodEntryMin} onChange={(e) => set("gracePeriodEntryMin", e.target.value)} />
-        <label className="label">{t("tariff.billingIncrement")}</label>
-        <input className="input w-32" value={form.incrementMin} onChange={(e) => set("incrementMin", e.target.value)} />
-        <label className="label">{t("tariff.lostTicketFee")}</label>
-        <input className="input w-32" value={form.lostTicket} onChange={(e) => set("lostTicket", e.target.value)} />
-        <label className="label">{t("tariff.exitGrace")}</label>
-        <input className="input w-32" value={form.gracePeriodExitMin} onChange={(e) => set("gracePeriodExitMin", e.target.value)} />
-      </div>
+      <TariffEditorForm form={form} onChange={setForm} />
 
-      {/* The DEFAULT card — always-active rate. Front-and-centre; a site that never
-          wants tiers just edits this and publishes a bare V1 structure. */}
-      <h3 className="mt-6 mb-0.5 text-h6 font-semibold uppercase tracking-wider text-term-text">{t("tariff.defaultCard")}</h3>
-      <p className="hint mb-2">{t("tariff.defaultCardHint")}</p>
-      <div className="card card-body">
-        <PricingEditor
-          t={t}
-          pricing={form.base}
-          allowStepped
-          onMode={(mode) => updatePricing("base", (p) => ({ ...p, mode }))}
-          onFlat={(flat) => updatePricing("base", (p) => ({ ...p, flat }))}
-          onCap={(dailyCap) => updatePricing("base", (p) => ({ ...p, dailyCap }))}
-          onBlock={(i, patch) => setBlock("base", i, patch)}
-          onAddBlock={() => addBlock("base")}
-          onRemoveBlock={(i) => removeBlock("base", i)}
-          onStep={setStep}
-          onAddStep={addStep}
-          onRemoveStep={removeStep}
-        />
-      </div>
-
-      {/* Advanced: time & seasonal/category TIERS (opt-in). Empty ⇒ V1 is published. */}
-      <details className="mt-6" open={form.tiers.length > 0}>
-        <summary className="cursor-pointer text-h6 font-semibold uppercase tracking-wider text-term-text">{t("tariff.tiersAdvanced")}</summary>
-        <p className="hint mt-1.5 mb-2">{t("tariff.tiersHint")}</p>
-        {/* A stepped ("up-to") base rate cannot be combined with time tiers — the
-            engine would ignore them. Warn up-front; publishing is also blocked server-side. */}
-        {form.base.mode === "stepped" && form.tiers.length > 0 && (
-          <p className="mb-3 rounded-term border border-term-red/50 bg-term-red/10 px-3 py-2 text-[0.75rem] text-term-red">
-            {t("tariff.steppedTiersConflict")}
-          </p>
-        )}
-        {form.tiers.map((tr, i) => (
-          <fieldset key={i} className="card mb-3 p-4">
-            <legend className="flex items-center gap-2 px-1">
+      <div className="mt-6 flex flex-wrap items-center gap-3">
         <input
-                className="input w-40"
-                value={tr.name}
-                onChange={(e) => setTier(i, { name: e.target.value })}
-                placeholder={t("tariff.tierName")}
+          className="input w-64"
+          value={versionName}
+          onChange={(e) => setVersionName(e.target.value)}
+          placeholder={t("tariff.versionNamePh")}
         />
-              <button type="button" className="btn btn-danger btn-sm" onClick={() => removeTier(i)}>
-                {t("tariff.remove")}
-              </button>
-            </legend>
-            <div className="grid grid-cols-[max-content_1fr] items-center gap-x-4 gap-y-2">
-              <label className="label">{t("tariff.tierPriority")}</label>
-              <input className="input w-20" value={tr.priority} onChange={(e) => setTier(i, { priority: e.target.value })} />
-              <label className="label">{t("tariff.tierCategory")}</label>
-              <input className="input w-40" value={tr.category} onChange={(e) => setTier(i, { category: e.target.value })} placeholder={t("tariff.tierCategoryPh")} />
-              <label className="label">{t("tariff.tierDays")}</label>
-              <span className="flex flex-wrap gap-2">
-                {[1, 2, 3, 4, 5, 6, 0].map((d) => (
-                  <label key={d} className="inline-flex items-center gap-1 text-[0.75rem] text-term-text">
-                    <input type="checkbox" className="accent-term-amber" checked={tr.dow.includes(d)} onChange={() => toggleDow(i, d)} />
-                    {t(`tariff.dow${d}`)}
-                  </label>
-                ))}
-              </span>
-              <label className="label">{t("tariff.tierHours")}</label>
-              <span className="inline-flex items-center gap-2">
-                <input className="input w-20" value={tr.fromHour} onChange={(e) => setTier(i, { fromHour: e.target.value })} placeholder="22:00" />
-                <span className="text-term-muted">–</span>
-                <input className="input w-20" value={tr.toHour} onChange={(e) => setTier(i, { toHour: e.target.value })} placeholder="06:00" />
-                {tr.fromHour && tr.toHour && tr.toHour <= tr.fromHour && (
-                  <span className="text-[0.6875rem] text-term-muted">{t("tariff.tierOvernight")}</span>
-                )}
-              </span>
-              <label className="label">{t("tariff.tierDates")}</label>
-              <span className="inline-flex items-center gap-2">
-                <input type="date" className="input w-40" value={tr.dateFrom} onChange={(e) => setTier(i, { dateFrom: e.target.value })} />
-                <span className="text-term-muted">–</span>
-                <input type="date" className="input w-40" value={tr.dateTo} onChange={(e) => setTier(i, { dateTo: e.target.value })} />
-              </span>
-            </div>
-            <div className="mt-3 border-t border-term-border pt-3">
-              <PricingEditor
-                t={t}
-                pricing={tr.pricing}
-                onMode={(mode) => updatePricing(i, (p) => ({ ...p, mode }))}
-                onFlat={(flat) => updatePricing(i, (p) => ({ ...p, flat }))}
-                onCap={(dailyCap) => updatePricing(i, (p) => ({ ...p, dailyCap }))}
-                onBlock={(bi, patch) => setBlock(i, bi, patch)}
-                onAddBlock={() => addBlock(i)}
-                onRemoveBlock={(bi) => removeBlock(i, bi)}
-              />
-            </div>
-          </fieldset>
-        ))}
-        <button type="button" className="btn btn-sm" onClick={addTier}>
-          {t("tariff.addTier")}
-        </button>
-      </details>
-
-      <div className="mt-6 flex items-center gap-3">
         <button type="button" className="btn btn-primary btn-lg" onClick={publish} disabled={saving}>
           {saving ? t("tariff.publishing") : t("tariff.publishNewVersion")}
         </button>
@@ -484,139 +90,3 @@ export function TariffComposer() {
     </section>
   );
 }
-
-// A reusable pricing-body editor — flat / marginal ladder / stepped (up-to). The
-// stepped mode is offered only where `allowStepped` (the default card, not tiers).
-function PricingEditor(props: {
-  t: (k: string) => string;
-  pricing: PricingForm;
-  allowStepped?: boolean;
-  onMode: (m: "ladder" | "flat" | "stepped") => void;
-  onFlat: (v: string) => void;
-  onCap: (v: string) => void;
-  onBlock: (i: number, patch: Partial<BlockForm>) => void;
-  onAddBlock: () => void;
-  onRemoveBlock: (i: number) => void;
-  onStep?: (i: number, patch: Partial<StepForm>) => void;
-  onAddStep?: () => void;
-  onRemoveStep?: (i: number) => void;
-}) {
-  const { t, pricing: p } = props;
-  return (
-    <div>
-      <div className="mb-3 flex gap-4 text-[0.75rem]">
-        <label className="inline-flex items-center gap-1.5 text-term-text">
-          <input type="radio" className="accent-term-amber" checked={p.mode === "ladder"} onChange={() => props.onMode("ladder")} />
-          {t("tariff.modeLadder")}
-        </label>
-        <label className="inline-flex items-center gap-1.5 text-term-text">
-          <input type="radio" className="accent-term-amber" checked={p.mode === "flat"} onChange={() => props.onMode("flat")} />
-          {t("tariff.modeFlat")}
-        </label>
-        {props.allowStepped && (
-          <label className="inline-flex items-center gap-1.5 text-term-text">
-            <input type="radio" className="accent-term-amber" checked={p.mode === "stepped"} onChange={() => props.onMode("stepped")} />
-            {t("tariff.modeStepped")}
-          </label>
-        )}
-      </div>
-
-      {p.mode === "stepped" ? (
-        <>
-          <p className="hint mb-2">{t("tariff.steppedHint")}</p>
-          <table className="w-full border-collapse">
-            <thead>
-              <tr className="text-left">
-                <th className="label px-2 pb-1 font-normal">{t("tariff.stepUpTo")}</th>
-                <th className="label px-2 pb-1 font-normal">{t("tariff.stepTotal")}</th>
-                <th />
-              </tr>
-            </thead>
-            <tbody>
-              {p.steps.map((s, i) => (
-                <tr key={i}>
-                  <td className="px-2 py-1">
-                    <span className="inline-flex items-center gap-2">
-                      <input className="input w-20" value={s.hours} onChange={(e) => props.onStep?.(i, { hours: e.target.value })} placeholder={t("tariff.egHours")} />
-                      <span className="text-[0.6875rem] text-term-muted">{t("tariff.hoursUnit")}</span>
-                    </span>
-                  </td>
-                  <td className="px-2 py-1">
-                    <input className="input w-28" value={s.total} onChange={(e) => props.onStep?.(i, { total: e.target.value })} />
-                  </td>
-                  <td className="px-2">
-                    {p.steps.length > 1 && (
-                      <button type="button" className="btn btn-ghost btn-sm" onClick={() => props.onRemoveStep?.(i)}>
-                        {t("tariff.remove")}
-                      </button>
-                    )}
-                  </td>
-                </tr>
-              ))}
-            </tbody>
-          </table>
-          <div className="mt-3">
-            <button type="button" className="btn btn-sm" onClick={props.onAddStep}>
-              {t("tariff.addStep")}
-            </button>
-          </div>
-        </>
-      ) : p.mode === "flat" ? (
-        <div className="inline-flex items-center gap-2">
-          <span className="label">{t("tariff.pricePerIncrement")}</span>
-          <input className="input w-28" value={p.flat} onChange={(e) => props.onFlat(e.target.value)} />
-        </div>
-      ) : (
-        <>
-          <table className="w-full border-collapse">
-            <thead>
-              <tr className="text-left">
-                <th className="label px-2 pb-1 font-normal">{t("tariff.bandDuration")}</th>
-                <th className="label px-2 pb-1 font-normal">{t("tariff.pricePerIncrement")}</th>
-                <th />
-              </tr>
-            </thead>
-            <tbody>
-              {p.blocks.map((b, i) => {
-                const isTail = i === p.blocks.length - 1;
-                return (
-                  <tr key={i}>
-                    <td className="px-2 py-1">
-                      {isTail ? (
-                        <span className="italic text-term-muted">{t("tariff.thereafter")}</span>
-                      ) : (
-                        <span className="inline-flex items-center gap-2">
-                          <input className="input w-20" value={b.hours} onChange={(e) => props.onBlock(i, { hours: e.target.value })} placeholder={t("tariff.egHours")} />
-                          <span className="text-[0.6875rem] text-term-muted">{t("tariff.hoursUnit")}</span>
-                        </span>
-                      )}
-                    </td>
-                    <td className="px-2 py-1">
-                      <input className="input w-28" value={b.price} onChange={(e) => props.onBlock(i, { price: e.target.value })} />
-                    </td>
-                    <td className="px-2">
-                      {!isTail && (
-                        <button type="button" className="btn btn-ghost btn-sm" onClick={() => props.onRemoveBlock(i)}>
-                          {t("tariff.remove")}
-                        </button>
-                      )}
-                    </td>
-                  </tr>
-                );
-              })}
-            </tbody>
-          </table>
-          <div className="mt-3 flex items-center gap-4">
-            <button type="button" className="btn btn-sm" onClick={props.onAddBlock}>
-              {t("tariff.addBlock")}
-            </button>
-            <span className="inline-flex items-center gap-2">
-              <span className="label">{t("tariff.dailyCap")}</span>
-              <input className="input w-28" value={p.dailyCap} onChange={(e) => props.onCap(e.target.value)} placeholder={t("tariff.dailyCapPh")} />
-            </span>
-          </div>
-        </>
-      )}
-    </div>
-  );
-}

apps/web/src/TariffEditorForm.tsx

@@ -0,0 +1,609 @@
+import { useTranslation } from "react-i18next";
+import { currencyOptions } from "./lib/currencies.js";
+import {
+  isTariffV2,
+  type TariffBlock,
+  type TariffCard,
+  type TariffStep,
+  type TariffStructure,
+  type TariffState,
+} from "./api.js";
+
+// The tariff EDITOR FORM — the rate-card composer's form machinery (state shape,
+// structure↔form converters, and the editing UI), extracted so two hosts can share
+// it: the /setup/tariff page (edits + publishes the live card) and the Tariff Lab's
+// draft modal (edits an experimental card). The host owns the FormState and the
+// submit action; this module owns everything between. Amounts are entered in major
+// units (e.g. euros) and converted to integer minor units on submit.
+// See wiki/concepts/tariff.md.
+
+// Editable form mirror of TariffStructure, but money in major-unit strings.
+// Blocks are edited as a DURATION in hours ("this band lasts N hours") — the
+// owner thinks "first 2 hours, then next 3 hours", not in cumulative minutes.
+// The LAST block is always open-ended ("thereafter"): its hours field is unused
+// and it has no bound. On submit, per-block hours accumulate into the engine's
+// cumulative `uptoMin` (minutes), and the last block emits uptoMin: null.
+export interface BlockForm {
+  hours: string; // duration of THIS band, in hours (ignored for the last block)
+  price: string; // major units, e.g. "2.00"
+}
+// One STEPPED ("up-to") row: "a stay up to N hours costs TOTAL". The owner enters the
+// matrix verbatim (totals, not marginal rates). See wiki/concepts/tariff.md.
+export interface StepForm {
+  hours: string; // inclusive upper bound of this tier, in hours (e.g. "3")
+  total: string; // TOTAL major units for a stay within this tier (e.g. "5.00")
+}
+// A pricing body the form edits: a per-increment flat rate, a marginal block ladder,
+// a stepped (up-to) total-by-duration table, or a whole-window package (tiers only).
+export interface PricingForm {
+  mode: "ladder" | "flat" | "stepped" | "package";
+  flat: string; // major units PER INCREMENT (used when mode==="flat")
+  packageTotal: string; // major units for the WHOLE window occurrence (mode==="package")
+  blocks: BlockForm[]; // hours-based ladder (used when mode==="ladder")
+  steps: StepForm[]; // up-to tiers (used when mode==="stepped")
+  dailyCap: string; // "" = no cap (ladder only)
+}
+// An optional time/category TIER (a V2 windowed card). Absent windows = unconstrained.
+export interface TierForm {
+  name: string;
+  priority: string;
+  category: string; // "" = applies to all categories
+  dow: number[]; // selected days 0..6; empty = every day
+  fromHour: string; // "" = all day
+  toHour: string;
+  dateFrom: string; // "" = unbounded
+  dateTo: string;
+  pricing: PricingForm;
+}
+export interface FormState {
+  currency: string;
+  gracePeriodEntryMin: string;
+  incrementMin: string;
+  lostTicket: string;
+  gracePeriodExitMin: string;
+  // The default (always-active) card — its own flat/ladder body + daily cap.
+  base: PricingForm;
+  // Optional time/category tiers. Empty ⇒ a bare V1 structure is published.
+  tiers: TierForm[];
+}
+
+const toMinor = (major: string): number => Math.round(parseFloat(major || "0") * 100);
+const toMajor = (minor: number): string => (minor / 100).toFixed(2);
+
+function emptySteps(): StepForm[] {
+  return [
+    { hours: "1", total: "2.00" },
+    { hours: "3", total: "5.00" },
+  ];
+}
+function emptyLadder(): PricingForm {
+  return {
+    mode: "ladder",
+    flat: "0.00",
+    packageTotal: "0.00",
+    dailyCap: "",
+    blocks: [{ hours: "1", price: "2.00" }, { hours: "", price: "1.00" }],
+    steps: emptySteps(),
+  };
+}
+function emptyTier(): TierForm {
+  return {
+    name: "",
+    priority: "10",
+    category: "",
+    dow: [],
+    fromHour: "",
+    toHour: "",
+    dateFrom: "",
+    dateTo: "",
+    pricing: { ...emptyLadder(), blocks: [{ hours: "", price: "1.00" }] },
+  };
+}
+
+export function emptyForm(): FormState {
+  return {
+    currency: "ALL",
+    gracePeriodEntryMin: "15",
+    incrementMin: "60",
+    lostTicket: "20.00",
+    gracePeriodExitMin: "15",
+    base: emptyLadder(),
+    tiers: [],
+  };
+}
+
+// Convert a stored block ladder's cumulative `uptoMin` (minutes) into the per-band
+// hours the form edits. Open-ended last band has no hours. Legacy bounded tails still
+// load (shown as their own band).
+function blocksToForm(blocks: TariffBlock[]): BlockForm[] {
+  let prev = 0;
+  return blocks.map((b) => {
+    if (b.uptoMin == null) return { hours: "", price: toMajor(b.priceMinorPerIncrement) };
+    const hours = (b.uptoMin - prev) / 60;
+    prev = b.uptoMin;
+    return { hours: String(hours), price: toMajor(b.priceMinorPerIncrement) };
+  });
+}
+
+// A stored stepped table's `uptoMin` (minutes) → the per-tier hours the form edits.
+function stepsToForm(steps: TariffStep[]): StepForm[] {
+  return steps.map((s) => ({ hours: String(s.uptoMin / 60), total: toMajor(s.totalMinor) }));
+}
+
+// A stored card (V2) or bare-V1 body → the form's PricingForm (flat, ladder, stepped,
+// or window package).
+function pricingFromCard(c: {
+  flatMinor?: number;
+  blocks?: TariffBlock[];
+  steps?: TariffStep[];
+  packageMinor?: number;
+  dailyCapMinor?: number | null;
+}): PricingForm {
+  if (c.steps != null && c.steps.length > 0) {
+    return { ...emptyLadder(), mode: "stepped", steps: stepsToForm(c.steps) };
+  }
+  if (c.packageMinor != null) {
+    return { ...emptyLadder(), mode: "package", packageTotal: toMajor(c.packageMinor) };
+  }
+  if (c.flatMinor != null) {
+    return { ...emptyLadder(), mode: "flat", flat: toMajor(c.flatMinor) };
+  }
+  return {
+    ...emptyLadder(),
+    mode: "ladder",
+    dailyCap: c.dailyCapMinor == null ? "" : toMajor(c.dailyCapMinor),
+    blocks: blocksToForm(c.blocks ?? []),
+  };
+}
+
+function tierFromCard(c: TariffCard): TierForm {
+  const w = c.window ?? {};
+  return {
+    name: c.name,
+    priority: String(c.priority),
+    category: c.category ?? "",
+    dow: w.dow ? [...w.dow] : [],
+    fromHour: w.fromHour ?? "",
+    toHour: w.toHour ?? "",
+    dateFrom: w.dateFrom ?? "",
+    dateTo: w.dateTo ?? "",
+    pricing: pricingFromCard(c),
+  };
+}
+
+/** A stored (currency, structure) pair → the editable form. Used to load the active
+ *  version into the composer page and a saved draft into the lab modal. */
+export function formFromVersion(currency: string, st: TariffStructure): FormState {
+  const common = {
+    currency,
+    gracePeriodEntryMin: String(st.gracePeriodEntryMin),
+    incrementMin: String(st.incrementMin),
+    lostTicket: toMajor(st.lostTicketMinor),
+    gracePeriodExitMin: String(st.gracePeriodExitMin),
+  };
+  if (isTariffV2(st)) {
+    return { ...common, base: pricingFromCard(st.defaultCard), tiers: (st.windowedCards ?? []).map(tierFromCard) };
+  }
+  // V1: the bare ladder becomes the default card body; no tiers.
+  return { ...common, base: pricingFromCard(st), tiers: [] };
+}
+
+export function formFromActive(s: TariffState): FormState {
+  return s.active ? formFromVersion(s.active.currency, s.active.structure) : emptyForm();
+}
+
+// Build a tariff card's pricing body (flat XOR ladder XOR stepped XOR package) from a PricingForm.
+function pricingToCardBody(p: PricingForm): Pick<TariffCard, "flatMinor" | "blocks" | "steps" | "packageMinor" | "dailyCapMinor"> {
+  if (p.mode === "flat") return { flatMinor: toMinor(p.flat) };
+  if (p.mode === "package") return { packageMinor: toMinor(p.packageTotal) };
+  if (p.mode === "stepped") {
+    // Each row's `hours` IS the inclusive threshold (the matrix "up to N hours").
+    const steps: TariffStep[] = p.steps.map((s) => ({
+      uptoMin: Math.round(Number(s.hours || "0") * 60),
+      totalMinor: toMinor(s.total),
+    }));
+    return { steps };
+  }
+  // Accumulate each band's hours into cumulative uptoMin (min); last band open-ended.
+  const last = p.blocks.length - 1;
+  let cum = 0;
+  const blocks: TariffBlock[] = p.blocks.map((b, i) => {
+    if (i === last) return { uptoMin: null, priceMinorPerIncrement: toMinor(b.price) };
+    cum += Math.round(Number(b.hours || "0") * 60);
+    return { uptoMin: cum, priceMinorPerIncrement: toMinor(b.price) };
+  });
+  return { blocks, dailyCapMinor: p.dailyCap.trim() === "" ? null : toMinor(p.dailyCap) };
+}
+
+function tierToCard(tr: TierForm): TariffCard {
+  const window: TariffCard["window"] = {};
+  if (tr.dow.length > 0) window.dow = [...tr.dow].sort((a, b) => a - b);
+  if (tr.fromHour && tr.toHour) {
+    window.fromHour = tr.fromHour;
+    window.toHour = tr.toHour;
+  }
+  if (tr.dateFrom) window.dateFrom = tr.dateFrom;
+  if (tr.dateTo) window.dateTo = tr.dateTo;
+  const card: TariffCard = {
+    name: tr.name.trim() || "tier",
+    priority: Math.round(Number(tr.priority || "0")),
+    ...pricingToCardBody(tr.pricing),
+  };
+  if (tr.category.trim()) card.category = tr.category.trim();
+  if (Object.keys(window).length > 0) card.window = window;
+  return card;
+}
+
+export function toStructure(f: FormState): TariffStructure {
+  const common = {
+    gracePeriodEntryMin: Math.round(Number(f.gracePeriodEntryMin)),
+    incrementMin: Math.round(Number(f.incrementMin)),
+    lostTicketMinor: toMinor(f.lostTicket),
+    gracePeriodExitMin: Math.round(Number(f.gracePeriodExitMin)),
+    overstay: "reprice" as const,
+  };
+  const baseBody = pricingToCardBody(f.base);
+
+  // NO tiers ⇒ publish a BARE V1 structure (back-compat: a site that never wants
+  // tiers gets exactly today's shape; the server leaves it untouched).
+  if (f.tiers.length === 0) {
+    if (f.base.mode === "stepped") {
+      // A stepped V1: the up-to table replaces the ladder (blocks empty, no cap).
+      return { ...common, blocks: [], steps: baseBody.steps ?? [], dailyCapMinor: null };
+    }
+    if (f.base.mode === "flat") {
+      // A flat V1: a single open-ended block at the flat rate (V1 has no flat field).
+      return { ...common, blocks: [{ uptoMin: null, priceMinorPerIncrement: toMinor(f.base.flat) }], dailyCapMinor: null };
+    }
+    return { ...common, blocks: baseBody.blocks ?? [], dailyCapMinor: baseBody.dailyCapMinor ?? null };
+  }
+
+  // Tiers present ⇒ V2. tz is stamped server-side from site config (left blank here).
+  return {
+    ...common,
+    version: 2,
+    tz: "",
+    defaultCard: { name: "default", priority: 0, ...baseBody },
+    windowedCards: f.tiers.map(tierToCard),
+  };
+}
+
+/** The full rate-card editing UI (shared settings + default card + tiers). The host
+ *  owns the FormState; every edit flows through `onChange` as a functional update. */
+export function TariffEditorForm({
+  form,
+  onChange,
+}: {
+  form: FormState;
+  onChange: (update: (f: FormState) => FormState) => void;
+}) {
+  const { t } = useTranslation();
+
+  function set<K extends keyof FormState>(key: K, value: FormState[K]) {
+    onChange((f) => ({ ...f, [key]: value }));
+  }
+
+  // --- pricing-body editing (used by the default card AND each tier) ---
+  // `update` maps the old PricingForm to a new one; `target` selects which body:
+  // the base card, or tier index N.
+  function updatePricing(target: "base" | number, update: (p: PricingForm) => PricingForm) {
+    onChange((f) => {
+      if (target === "base") return { ...f, base: update(f.base) };
+      return { ...f, tiers: f.tiers.map((tr, j) => (j === target ? { ...tr, pricing: update(tr.pricing) } : tr)) };
+    });
+  }
+  function setBlock(target: "base" | number, i: number, patch: Partial<BlockForm>) {
+    updatePricing(target, (p) => ({ ...p, blocks: p.blocks.map((b, j) => (j === i ? { ...b, ...patch } : b)) }));
+  }
+  // Insert a bounded band just BEFORE the open-ended tail, so the last block stays open-ended.
+  function addBlock(target: "base" | number) {
+    updatePricing(target, (p) => {
+      const next = [...p.blocks];
+      next.splice(p.blocks.length - 1, 0, { hours: "1", price: "0.00" });
+      return { ...p, blocks: next };
+    });
+  }
+  function removeBlock(target: "base" | number, i: number) {
+    updatePricing(target, (p) => (i === p.blocks.length - 1 || p.blocks.length <= 1 ? p : { ...p, blocks: p.blocks.filter((_, j) => j !== i) }));
+  }
+  // --- stepped (up-to) editing (base card only) ---
+  function setStep(i: number, patch: Partial<StepForm>) {
+    updatePricing("base", (p) => ({ ...p, steps: p.steps.map((s, j) => (j === i ? { ...s, ...patch } : s)) }));
+  }
+  function addStep() {
+    updatePricing("base", (p) => ({ ...p, steps: [...p.steps, { hours: "", total: "0.00" }] }));
+  }
+  function removeStep(i: number) {
+    updatePricing("base", (p) => (p.steps.length <= 1 ? p : { ...p, steps: p.steps.filter((_, j) => j !== i) }));
+  }
+
+  // --- tier editing ---
+  function setTier(i: number, patch: Partial<TierForm>) {
+    onChange((f) => ({ ...f, tiers: f.tiers.map((tr, j) => (j === i ? { ...tr, ...patch } : tr)) }));
+  }
+  function addTier() {
+    onChange((f) => ({ ...f, tiers: [...f.tiers, emptyTier()] }));
+  }
+  function removeTier(i: number) {
+    onChange((f) => ({ ...f, tiers: f.tiers.filter((_, j) => j !== i) }));
+  }
+  function toggleDow(i: number, d: number) {
+    onChange((f) => ({
+      ...f,
+      tiers: f.tiers.map((tr, j) =>
+        j === i ? { ...tr, dow: tr.dow.includes(d) ? tr.dow.filter((x) => x !== d) : [...tr.dow, d] } : tr,
+      ),
+    }));
+  }
+
+  return (
+    <div>
+      <div className="card card-body grid grid-cols-[max-content_1fr] items-center gap-x-4 gap-y-2">
+        <label className="label">{t("tariff.currency")}</label>
+        <select className="input w-24" value={form.currency} onChange={(e) => set("currency", e.target.value)}>
+          {currencyOptions(form.currency).map((c) => (
+            <option key={c} value={c}>{c}</option>
+          ))}
+        </select>
+        <label className="label">{t("tariff.freeEntryGrace")}</label>
+        <input className="input w-32" value={form.gracePeriodEntryMin} onChange={(e) => set("gracePeriodEntryMin", e.target.value)} />
+        <label className="label">{t("tariff.billingIncrement")}</label>
+        <input className="input w-32" value={form.incrementMin} onChange={(e) => set("incrementMin", e.target.value)} />
+        <label className="label">{t("tariff.lostTicketFee")}</label>
+        <input className="input w-32" value={form.lostTicket} onChange={(e) => set("lostTicket", e.target.value)} />
+        <label className="label">{t("tariff.exitGrace")}</label>
+        <input className="input w-32" value={form.gracePeriodExitMin} onChange={(e) => set("gracePeriodExitMin", e.target.value)} />
+      </div>
+
+      {/* The DEFAULT card — always-active rate. Front-and-centre; a site that never
+          wants tiers just edits this and publishes a bare V1 structure. */}
+      <h3 className="mt-6 mb-0.5 text-h6 font-semibold uppercase tracking-wider text-term-text">{t("tariff.defaultCard")}</h3>
+      <p className="hint mb-2">{t("tariff.defaultCardHint")}</p>
+      <div className="card card-body">
+        <PricingEditor
+          t={t}
+          pricing={form.base}
+          allowStepped
+          onMode={(mode) => updatePricing("base", (p) => ({ ...p, mode }))}
+          onFlat={(flat) => updatePricing("base", (p) => ({ ...p, flat }))}
+          onCap={(dailyCap) => updatePricing("base", (p) => ({ ...p, dailyCap }))}
+          onBlock={(i, patch) => setBlock("base", i, patch)}
+          onAddBlock={() => addBlock("base")}
+          onRemoveBlock={(i) => removeBlock("base", i)}
+          onStep={setStep}
+          onAddStep={addStep}
+          onRemoveStep={removeStep}
+        />
+      </div>
+
+      {/* Advanced: time & seasonal/category TIERS (opt-in). Empty ⇒ V1 is published. */}
+      <details className="mt-6" open={form.tiers.length > 0}>
+        <summary className="cursor-pointer text-h6 font-semibold uppercase tracking-wider text-term-text">{t("tariff.tiersAdvanced")}</summary>
+        <p className="hint mt-1.5 mb-2">{t("tariff.tiersHint")}</p>
+        {/* A stepped ("up-to") base rate cannot be combined with time tiers — the
+            engine would ignore them. Warn up-front; publishing is also blocked server-side. */}
+        {form.base.mode === "stepped" && form.tiers.length > 0 && (
+          <p className="mb-3 rounded-term border border-term-red/50 bg-term-red/10 px-3 py-2 text-[0.75rem] text-term-red">
+            {t("tariff.steppedTiersConflict")}
+          </p>
+        )}
+        {form.tiers.map((tr, i) => (
+          <fieldset key={i} className="card mb-3 p-4">
+            <legend className="flex items-center gap-2 px-1">
+              <input
+                className="input w-40"
+                value={tr.name}
+                onChange={(e) => setTier(i, { name: e.target.value })}
+                placeholder={t("tariff.tierName")}
+              />
+              <button type="button" className="btn btn-danger btn-sm" onClick={() => removeTier(i)}>
+                {t("tariff.remove")}
+              </button>
+            </legend>
+            <div className="grid grid-cols-[max-content_1fr] items-center gap-x-4 gap-y-2">
+              <label className="label">{t("tariff.tierPriority")}</label>
+              <input className="input w-20" value={tr.priority} onChange={(e) => setTier(i, { priority: e.target.value })} />
+              <label className="label">{t("tariff.tierCategory")}</label>
+              <input className="input w-40" value={tr.category} onChange={(e) => setTier(i, { category: e.target.value })} placeholder={t("tariff.tierCategoryPh")} />
+              <label className="label">{t("tariff.tierDays")}</label>
+              <span className="flex flex-wrap gap-2">
+                {[1, 2, 3, 4, 5, 6, 0].map((d) => (
+                  <label key={d} className="inline-flex items-center gap-1 text-[0.75rem] text-term-text">
+                    <input type="checkbox" className="accent-term-amber" checked={tr.dow.includes(d)} onChange={() => toggleDow(i, d)} />
+                    {t(`tariff.dow${d}`)}
+                  </label>
+                ))}
+              </span>
+              <label className="label">{t("tariff.tierHours")}</label>
+              <span className="inline-flex items-center gap-2">
+                <input className="input w-20" value={tr.fromHour} onChange={(e) => setTier(i, { fromHour: e.target.value })} placeholder="22:00" />
+                <span className="text-term-muted">–</span>
+                <input className="input w-20" value={tr.toHour} onChange={(e) => setTier(i, { toHour: e.target.value })} placeholder="06:00" />
+                {tr.fromHour && tr.toHour && tr.toHour <= tr.fromHour && (
+                  <span className="text-[0.6875rem] text-term-muted">{t("tariff.tierOvernight")}</span>
+                )}
+              </span>
+              <label className="label">{t("tariff.tierDates")}</label>
+              <span className="inline-flex items-center gap-2">
+                <input type="date" className="input w-40" value={tr.dateFrom} onChange={(e) => setTier(i, { dateFrom: e.target.value })} />
+                <span className="text-term-muted">–</span>
+                <input type="date" className="input w-40" value={tr.dateTo} onChange={(e) => setTier(i, { dateTo: e.target.value })} />
+              </span>
+            </div>
+            <div className="mt-3 border-t border-term-border pt-3">
+              <PricingEditor
+                t={t}
+                pricing={tr.pricing}
+                allowPackage
+                onMode={(mode) => updatePricing(i, (p) => ({ ...p, mode }))}
+                onFlat={(flat) => updatePricing(i, (p) => ({ ...p, flat }))}
+                onPackage={(packageTotal) => updatePricing(i, (p) => ({ ...p, packageTotal }))}
+                onCap={(dailyCap) => updatePricing(i, (p) => ({ ...p, dailyCap }))}
+                onBlock={(bi, patch) => setBlock(i, bi, patch)}
+                onAddBlock={() => addBlock(i)}
+                onRemoveBlock={(bi) => removeBlock(i, bi)}
+              />
+            </div>
+          </fieldset>
+        ))}
+        <button type="button" className="btn btn-sm" onClick={addTier}>
+          {t("tariff.addTier")}
+        </button>
+      </details>
+    </div>
+  );
+}
+
+// A reusable pricing-body editor — flat (per increment) / marginal ladder / stepped
+// (up-to) / window package. The stepped mode is offered only where `allowStepped`
+// (the default card); the package mode only where `allowPackage` (tier cards — the
+// engine needs a window to be an occurrence of).
+function PricingEditor(props: {
+  t: (k: string) => string;
+  pricing: PricingForm;
+  allowStepped?: boolean;
+  allowPackage?: boolean;
+  onMode: (m: "ladder" | "flat" | "stepped" | "package") => void;
+  onFlat: (v: string) => void;
+  onPackage?: (v: string) => void;
+  onCap: (v: string) => void;
+  onBlock: (i: number, patch: Partial<BlockForm>) => void;
+  onAddBlock: () => void;
+  onRemoveBlock: (i: number) => void;
+  onStep?: (i: number, patch: Partial<StepForm>) => void;
+  onAddStep?: () => void;
+  onRemoveStep?: (i: number) => void;
+}) {
+  const { t, pricing: p } = props;
+  return (
+    <div>
+      <div className="mb-3 flex flex-wrap gap-4 text-[0.75rem]">
+        <label className="inline-flex items-center gap-1.5 text-term-text">
+          <input type="radio" className="accent-term-amber" checked={p.mode === "ladder"} onChange={() => props.onMode("ladder")} />
+          {t("tariff.modeLadder")}
+        </label>
+        <label className="inline-flex items-center gap-1.5 text-term-text">
+          <input type="radio" className="accent-term-amber" checked={p.mode === "flat"} onChange={() => props.onMode("flat")} />
+          {t("tariff.modeFlat")}
+        </label>
+        {props.allowStepped && (
+          <label className="inline-flex items-center gap-1.5 text-term-text">
+            <input type="radio" className="accent-term-amber" checked={p.mode === "stepped"} onChange={() => props.onMode("stepped")} />
+            {t("tariff.modeStepped")}
+          </label>
+        )}
+        {props.allowPackage && (
+          <label className="inline-flex items-center gap-1.5 text-term-text">
+            <input type="radio" className="accent-term-amber" checked={p.mode === "package"} onChange={() => props.onMode("package")} />
+            {t("tariff.modePackage")}
+          </label>
+        )}
+      </div>
+
+      {p.mode === "package" ? (
+        <div>
+          <p className="hint mb-2">{t("tariff.packageHint")}</p>
+          <div className="inline-flex items-center gap-2">
+            <span className="label">{t("tariff.packageTotal")}</span>
+            <input className="input w-28" value={p.packageTotal} onChange={(e) => props.onPackage?.(e.target.value)} />
+          </div>
+        </div>
+      ) : p.mode === "stepped" ? (
+        <>
+          <p className="hint mb-2">{t("tariff.steppedHint")}</p>
+          <table className="w-full border-collapse">
+            <thead>
+              <tr className="text-left">
+                <th className="label px-2 pb-1 font-normal">{t("tariff.stepUpTo")}</th>
+                <th className="label px-2 pb-1 font-normal">{t("tariff.stepTotal")}</th>
+                <th />
+              </tr>
+            </thead>
+            <tbody>
+              {p.steps.map((s, i) => (
+                <tr key={i}>
+                  <td className="px-2 py-1">
+                    <span className="inline-flex items-center gap-2">
+                      <input className="input w-20" value={s.hours} onChange={(e) => props.onStep?.(i, { hours: e.target.value })} placeholder={t("tariff.egHours")} />
+                      <span className="text-[0.6875rem] text-term-muted">{t("tariff.hoursUnit")}</span>
+                    </span>
+                  </td>
+                  <td className="px-2 py-1">
+                    <input className="input w-28" value={s.total} onChange={(e) => props.onStep?.(i, { total: e.target.value })} />
+                  </td>
+                  <td className="px-2">
+                    {p.steps.length > 1 && (
+                      <button type="button" className="btn btn-ghost btn-sm" onClick={() => props.onRemoveStep?.(i)}>
+                        {t("tariff.remove")}
+                      </button>
+                    )}
+                  </td>
+                </tr>
+              ))}
+            </tbody>
+          </table>
+          <div className="mt-3">
+            <button type="button" className="btn btn-sm" onClick={props.onAddStep}>
+              {t("tariff.addStep")}
+            </button>
+          </div>
+        </>
+      ) : p.mode === "flat" ? (
+        <div className="inline-flex items-center gap-2">
+          <span className="label">{t("tariff.pricePerIncrement")}</span>
+          <input className="input w-28" value={p.flat} onChange={(e) => props.onFlat(e.target.value)} />
+        </div>
+      ) : (
+        <>
+          <table className="w-full border-collapse">
+            <thead>
+              <tr className="text-left">
+                <th className="label px-2 pb-1 font-normal">{t("tariff.bandDuration")}</th>
+                <th className="label px-2 pb-1 font-normal">{t("tariff.pricePerIncrement")}</th>
+                <th />
+              </tr>
+            </thead>
+            <tbody>
+              {p.blocks.map((b, i) => {
+                const isTail = i === p.blocks.length - 1;
+                return (
+                  <tr key={i}>
+                    <td className="px-2 py-1">
+                      {isTail ? (
+                        <span className="italic text-term-muted">{t("tariff.thereafter")}</span>
+                      ) : (
+                        <span className="inline-flex items-center gap-2">
+                          <input className="input w-20" value={b.hours} onChange={(e) => props.onBlock(i, { hours: e.target.value })} placeholder={t("tariff.egHours")} />
+                          <span className="text-[0.6875rem] text-term-muted">{t("tariff.hoursUnit")}</span>
+                        </span>
+                      )}
+                    </td>
+                    <td className="px-2 py-1">
+                      <input className="input w-28" value={b.price} onChange={(e) => props.onBlock(i, { price: e.target.value })} />
+                    </td>
+                    <td className="px-2">
+                      {!isTail && (
+                        <button type="button" className="btn btn-ghost btn-sm" onClick={() => props.onRemoveBlock(i)}>
+                          {t("tariff.remove")}
+                        </button>
+                      )}
+                    </td>
+                  </tr>
+                );
+              })}
+            </tbody>
+          </table>
+          <div className="mt-3 flex items-center gap-4">
+            <button type="button" className="btn btn-sm" onClick={props.onAddBlock}>
+              {t("tariff.addBlock")}
+            </button>
+            <span className="inline-flex items-center gap-2">
+              <span className="label">{t("tariff.dailyCap")}</span>
+              <input className="input w-28" value={p.dailyCap} onChange={(e) => props.onCap(e.target.value)} placeholder={t("tariff.dailyCapPh")} />
+            </span>
+          </div>
+        </>
+      )}
+    </div>
+  );
+}

apps/web/src/TariffLab.tsx

@@ -1,21 +1,30 @@
 import { useEffect, useState } from "react";
 import { useTranslation } from "react-i18next";
 import {
+  ApiError,
+  createTariffDraft,
+  deleteTariffDraft,
   fetchTariff,
-  loadSimSession,
+  fetchTariffDrafts,
+  publishTariffVersion,
   simulateTariff,
+  updateTariffDraft,
   type SimulateResult,
-  type SimPayment,
+  type TariffDraft,
   type TariffState,
 } from "./api.js";
+import { TariffEditorForm, emptyForm, formFromActive, formFromVersion, toStructure, type FormState } from "./TariffEditorForm.js";
+import { Modal } from "./ui/Modal.js";
 import { formatMoney, formatDuration } from "./lib/format.js";
 
-// The TARIFF LAB — a pure session-pricing simulator. Test rates "in time" (overnight
-// windows, daily caps, overstay) in seconds instead of waiting hours, against ANY
-// published tariff version, with no real ledger writes. Build a hypothetical session
-// (entry, optional payment, "now") OR load a real ticket and re-evaluate it at any
-// instant. Prices via the SAME `priceSession` the booth uses (server), so the lab and
-// the live booth can never diverge. See wiki/concepts/tariff.md, booth-exit-flow.md.
+// The TARIFF LAB — a sandbox for composing + pricing EXPERIMENTAL rate cards. Drafts
+// live in their own mutable table (tariff_drafts), so experimenting never churns the
+// immutable published versions or risks a half-baked card going live: the admin
+// composes a draft in the modal (the same form the composer page uses), simulates
+// hypothetical stays against it (entry + exit, nothing else), and only when satisfied
+// PUBLISHES it through the normal immutable-version path. Pricing uses the SAME
+// `priceSession` the booth uses (server-side), so the lab and the live booth can
+// never diverge. No ledger writes. See wiki/concepts/tariff.md.
 
 /** <input type="datetime-local"> wants "YYYY-MM-DDTHH:mm" in LOCAL time. */
 function toLocalInput(iso: string): string {
@@ -33,50 +42,76 @@ function nowLocal(): string {
   return toLocalInput(new Date().toISOString());
 }
 
+/** What the simulation runs against: the live card, a historical published
+ *  version, or one lab draft. */
+type Selection = { kind: "active" } | { kind: "version"; id: string } | { kind: "draft"; id: string };
+
+/** Modal state: a draft being composed (id null = not yet saved). */
+interface DraftEdit {
+  id: string | null;
+  name: string;
+  form: FormState;
+}
+
 export function TariffLab() {
   const { t } = useTranslation();
   const [state, setState] = useState<TariffState | null>(null);
+  const [drafts, setDrafts] = useState<TariffDraft[]>([]);
+  const [selected, setSelected] = useState<Selection>({ kind: "active" });
   const [err, setErr] = useState<string | null>(null);
+  const [notice, setNotice] = useState<string | null>(null);
 
-  // Inputs (datetime-local strings, local wall-clock).
+  // The hypothetical stay: entry + exit, nothing else.
   const [entered, setEntered] = useState<string>(() => {
     const d = new Date();
     d.setHours(d.getHours() - 3); // default: a 3h-ago entry
     return toLocalInput(d.toISOString());
   });
-  const [asOf, setAsOf] = useState<string>(nowLocal);
-  const [category, setCategory] = useState("");
-  const [versionId, setVersionId] = useState<string>(""); // "" = active
-  // Optional single hypothetical payment (the latest grants the walk-back grace).
-  const [paid, setPaid] = useState(false);
-  const [paidAt, setPaidAt] = useState<string>(nowLocal);
-  const [graceMin, setGraceMin] = useState<string>("5");
-  // Load-a-real-ticket.
-  const [ticket, setTicket] = useState("");
-  const [loadMsg, setLoadMsg] = useState<string | null>(null);
+  const [exit, setExit] = useState<string>(nowLocal);
 
   const [result, setResult] = useState<SimulateResult | null>(null);
   const [busy, setBusy] = useState(false);
 
+  // The draft-composer modal.
+  const [edit, setEdit] = useState<DraftEdit | null>(null);
+  const [saving, setSaving] = useState(false);
+  const [editErr, setEditErr] = useState<string | null>(null);
+
+  async function refresh() {
+    const [s, d] = await Promise.all([fetchTariff(), fetchTariffDrafts()]);
+    setState(s);
+    setDrafts(d.drafts);
+    return d.drafts;
+  }
   useEffect(() => {
-    fetchTariff()
-      .then(setState)
-      .catch((e) => setErr((e as Error).message));
+    refresh().catch((e) => setErr((e as Error).message));
   }, []);
 
+  const selectedDraft = selected.kind === "draft" ? drafts.find((d) => d.id === selected.id) ?? null : null;
+  const selectedVersion =
+    selected.kind === "version" ? state?.versions.find((v) => v.id === selected.id) ?? null : null;
+
+  function select(sel: Selection) {
+    setSelected(sel);
+    setResult(null); // a stale price against another card would mislead
+    setErr(null);
+    setNotice(null);
+  }
+
   async function run() {
     setErr(null);
     setBusy(true);
     try {
-      const payments: SimPayment[] = paid
-        ? [{ paidAt: fromLocalInput(paidAt), graceExitMin: graceMin.trim() === "" ? null : Number(graceMin) }]
-        : [];
       const r = await simulateTariff({
         enteredAt: fromLocalInput(entered),
-        asOf: fromLocalInput(asOf),
-        payments,
-        category: category.trim() || undefined,
-        tariffVersionId: versionId || undefined,
+        asOf: fromLocalInput(exit),
+        // A draft carries its own structure+currency; a historical version is
+        // referenced by id; otherwise the ACTIVE version.
+        ...(selectedDraft
+          ? { structure: selectedDraft.structure, currency: selectedDraft.currency }
+          : selectedVersion
+            ? { tariffVersionId: selectedVersion.id }
+            : {}),
       });
       setResult(r);
     } catch (e) {
@@ -87,103 +122,116 @@ export function TariffLab() {
     }
   }
 
-  async function loadTicket() {
-    setLoadMsg(null);
+  // --- draft actions ---
+  function newDraft() {
+    // Start from the live card when there is one — the admin usually experiments
+    // with a variation of today's prices, not from a blank slate.
+    const form = state?.active ? formFromActive(state) : emptyForm();
+    setEditErr(null);
+    setEdit({ id: null, name: "", form });
+  }
+  function editDraft(d: TariffDraft) {
+    setEditErr(null);
+    setEdit({ id: d.id, name: d.name, form: formFromVersion(d.currency, d.structure) });
+  }
+
+  async function saveDraft() {
+    if (!edit) return;
+    setSaving(true);
+    setEditErr(null);
+    try {
+      const body = {
+        name: edit.name.trim(),
+        currency: edit.form.currency.trim().toUpperCase(),
+        structure: toStructure(edit.form),
+      };
+      const saved = edit.id ? await updateTariffDraft(edit.id, body) : await createTariffDraft(body);
+      await refresh();
+      setEdit(null);
+      select({ kind: "draft", id: saved.id });
+    } catch (e) {
+      const text =
+        e instanceof ApiError && e.problems?.length ? `${e.message}: ${e.problems.join("; ")}` : (e as Error).message;
+      setEditErr(text);
+    } finally {
+      setSaving(false);
+    }
+  }
+
+  async function removeDraft(d: TariffDraft) {
+    if (!confirm(t("lab.confirmDelete", { name: d.name }))) return;
     setErr(null);
     try {
-      const s = await loadSimSession(ticket.trim());
-      setEntered(toLocalInput(s.enteredAt));
-      setAsOf(s.exitedAt ? toLocalInput(s.exitedAt) : nowLocal());
-      setCategory(s.category ?? "");
-      setVersionId(s.tariffVersionId ?? "");
-      const last = s.payments.at(-1);
-      if (last) {
-        setPaid(true);
-        setPaidAt(toLocalInput(last.paidAt));
-        setGraceMin(last.graceExitMin != null ? String(last.graceExitMin) : "");
-      } else {
-        setPaid(false);
-      }
-      setLoadMsg(t("lab.loaded", { id: s.identity }));
+      await deleteTariffDraft(d.id);
+      await refresh();
+      select({ kind: "active" });
     } catch (e) {
       setErr((e as Error).message);
     }
   }
 
-  const currency = result?.currency ?? state?.active?.currency ?? "ALL";
+  async function publishDraft(d: TariffDraft) {
+    if (!confirm(t("lab.confirmPublish", { name: d.name }))) return;
+    setErr(null);
+    setNotice(null);
+    try {
+      // The draft's name rides along onto the immutable version.
+      await publishTariffVersion({ currency: d.currency, structure: d.structure, name: d.name });
+      await refresh();
+      setNotice(t("tariff.publishedOk"));
+    } catch (e) {
+      const text =
+        e instanceof ApiError && e.problems?.length ? `${e.message}: ${e.problems.join("; ")}` : (e as Error).message;
+      setErr(text);
+    }
+  }
+
+  const currency = result?.currency ?? selectedDraft?.currency ?? selectedVersion?.currency ?? state?.active?.currency ?? "ALL";
 
   return (
     <section className="px-4 py-6">
       <h2 className="mb-1 text-h4 font-semibold text-term-text">{t("lab.title")}</h2>
       <p className="hint mb-4">{t("lab.intro")}</p>
 
-      {/* Load a real ticket */}
-      <div className="card card-body mb-4 flex flex-wrap items-end gap-2">
-        <div className="flex flex-col gap-1">
-          <label className="label">{t("lab.loadTicket")}</label>
-          <input
-            className="input w-56"
-            value={ticket}
-            onChange={(e) => setTicket(e.target.value)}
-            placeholder={t("lab.loadTicketPh")}
-          />
-        </div>
-        <button type="button" className="btn btn-sm" onClick={loadTicket} disabled={!ticket.trim()}>
-          {t("lab.load")}
+      <div className="flex flex-col gap-4 lg:flex-row">
+        {/* Main: the hypothetical stay + result, priced against the selection. */}
+        <div className="min-w-0 flex-1">
+          {/* What we're pricing against + draft actions. */}
+          <div className="mb-3 flex flex-wrap items-center gap-2">
+            <span className="rounded bg-term-panel-2 px-2 py-1 text-[0.75rem] text-term-cyan">
+              {selectedDraft
+                ? selectedDraft.name
+                : selectedVersion
+                  ? selectedVersion.name ?? new Date(selectedVersion.effectiveFrom).toLocaleString()
+                  : t("lab.activeTariff")}
+            </span>
+            {selectedDraft && (
+              <>
+                <button type="button" className="btn btn-sm" onClick={() => editDraft(selectedDraft)}>
+                  {t("lab.edit")}
                 </button>
-        {loadMsg && <span className="text-[0.75rem] text-term-green">{loadMsg}</span>}
+                <button type="button" className="btn btn-sm" onClick={() => publishDraft(selectedDraft)}>
+                  {t("lab.publish")}
+                </button>
+                <button type="button" className="btn btn-danger btn-sm" onClick={() => removeDraft(selectedDraft)}>
+                  {t("lab.delete")}
+                </button>
+              </>
+            )}
+            {notice && <span className="text-[0.75rem] text-term-green">{notice}</span>}
           </div>
 
-      {/* Hypothetical session inputs */}
           <div className="card card-body grid grid-cols-[max-content_1fr] items-center gap-x-4 gap-y-2">
-        <label className="label">{t("lab.tariffVersion")}</label>
-        <select className="input w-full max-w-md" value={versionId} onChange={(e) => setVersionId(e.target.value)}>
-          <option value="">{t("lab.activeVersion")}</option>
-          {state?.versions.map((v) => (
-            <option key={v.id} value={v.id}>
-              {new Date(v.effectiveFrom).toLocaleString()} · {v.currency} · {v.id.slice(0, 8)}
-            </option>
-          ))}
-        </select>
-
             <label className="label">{t("lab.entered")}</label>
             <input type="datetime-local" className="input w-64" value={entered} onChange={(e) => setEntered(e.target.value)} />
 
-        <label className="label">{t("lab.asOf")}</label>
+            <label className="label">{t("lab.exit")}</label>
             <span className="flex items-center gap-2">
-          <input type="datetime-local" className="input w-64" value={asOf} onChange={(e) => setAsOf(e.target.value)} />
-          <button type="button" className="btn btn-sm" onClick={() => setAsOf(nowLocal())}>
+              <input type="datetime-local" className="input w-64" value={exit} onChange={(e) => setExit(e.target.value)} />
+              <button type="button" className="btn btn-sm" onClick={() => setExit(nowLocal())}>
                 {t("lab.now")}
               </button>
             </span>
-
-        <label className="label">{t("lab.category")}</label>
-        <input
-          className="input w-40"
-          value={category}
-          onChange={(e) => setCategory(e.target.value)}
-          placeholder={t("lab.categoryPh")}
-        />
-
-        <label className="label">{t("lab.payment")}</label>
-        <span className="flex flex-wrap items-center gap-2">
-          <label className="inline-flex items-center gap-1 text-[0.75rem] text-term-text">
-            <input type="checkbox" className="accent-term-amber" checked={paid} onChange={(e) => setPaid(e.target.checked)} />
-            {t("lab.paid")}
-          </label>
-          {paid && (
-            <>
-              <input
-                type="datetime-local"
-                className="input w-64"
-                value={paidAt}
-                onChange={(e) => setPaidAt(e.target.value)}
-              />
-              <span className="text-term-muted">{t("lab.graceMin")}</span>
-              <input className="input w-20" value={graceMin} onChange={(e) => setGraceMin(e.target.value)} />
-            </>
-          )}
-        </span>
           </div>
 
           <div className="mt-4 flex items-center gap-3">
@@ -203,7 +251,7 @@ export function TariffLab() {
                   <dd className="text-2xl font-bold text-term-cyan">{formatMoney(result.pricing.amountMinor, currency)}</dd>
                   <dt className="text-term-muted">{t("lab.billedPeriod")}</dt>
                   <dd className="text-term-text">
-                {formatDuration(result.pricing.periodStart, fromLocalInput(asOf))}
+                    {formatDuration(result.pricing.periodStart, fromLocalInput(exit))}
                     {result.pricing.overstay && (
                       <span className="ml-2 rounded bg-term-red/15 px-1.5 py-0.5 text-[0.625rem] uppercase text-term-red">
                         {t("lab.overstay")}
@@ -243,6 +291,122 @@ export function TariffLab() {
               </div>
             </div>
           )}
+        </div>
+
+        {/* Sidebar: lab drafts + the full published history; click any to price
+            against it. */}
+        <aside className="w-full shrink-0 lg:w-72">
+          <div className="mb-2 flex items-center justify-between">
+            <h3 className="text-h6 font-semibold uppercase tracking-wider text-term-text">{t("lab.drafts")}</h3>
+            <button type="button" className="btn btn-sm" onClick={newDraft}>
+              {t("lab.newDraft")}
+            </button>
+          </div>
+          <ul className="flex flex-col gap-1">
+            {drafts.map((d) => (
+              <li key={d.id}>
+                <button
+                  type="button"
+                  onClick={() => select({ kind: "draft", id: d.id })}
+                  className={`w-full rounded-term border px-3 py-2 text-left text-[0.8125rem] ${
+                    selected.kind === "draft" && selected.id === d.id
+                      ? "border-term-amber bg-term-amber/10 text-term-text"
+                      : "border-term-border text-term-muted hover:text-term-text"
+                  }`}
+                >
+                  <span className="block font-semibold">{d.name}</span>
+                  <span className="block text-[0.6875rem] text-term-muted">
+                    {d.currency} · {new Date(d.updatedAt).toLocaleString()}
+                  </span>
+                </button>
+              </li>
+            ))}
+            {drafts.length === 0 && <li className="hint px-1 py-2">{t("lab.noDrafts")}</li>}
+          </ul>
+
+          {/* Published versions: the active card first, then the immutable history
+              (older versions still price past sessions — see wiki/concepts/tariff.md). */}
+          <h3 className="mb-2 mt-5 text-h6 font-semibold uppercase tracking-wider text-term-text">
+            {t("lab.published")}
+          </h3>
+          <ul className="flex flex-col gap-1">
+            <li>
+              <button
+                type="button"
+                onClick={() => select({ kind: "active" })}
+                className={`w-full rounded-term border px-3 py-2 text-left text-[0.8125rem] ${
+                  selected.kind === "active"
+                    ? "border-term-amber bg-term-amber/10 text-term-text"
+                    : "border-term-border text-term-muted hover:text-term-text"
+                }`}
+              >
+                <span className="block font-semibold">
+                  {t("lab.activeTariff")}
+                  {state?.active?.name ? ` — ${state.active.name}` : ""}
+                </span>
+                <span className="block text-[0.6875rem] text-term-muted">
+                  {state?.active ? new Date(state.active.effectiveFrom).toLocaleString() : t("tariff.noRateCard")}
+                </span>
+              </button>
+            </li>
+            {state?.versions
+              .filter((v) => v.id !== state.active?.id)
+              .map((v) => (
+                <li key={v.id}>
+                  <button
+                    type="button"
+                    onClick={() => select({ kind: "version", id: v.id })}
+                    className={`w-full rounded-term border px-3 py-2 text-left text-[0.8125rem] ${
+                      selected.kind === "version" && selected.id === v.id
+                        ? "border-term-amber bg-term-amber/10 text-term-text"
+                        : "border-term-border text-term-muted hover:text-term-text"
+                    }`}
+                  >
+                    <span className="block font-semibold">
+                      {v.name ?? new Date(v.effectiveFrom).toLocaleString()}
+                    </span>
+                    <span className="block text-[0.6875rem] text-term-muted">
+                      {v.name ? `${new Date(v.effectiveFrom).toLocaleString()} · ` : ""}
+                      {v.currency}
+                    </span>
+                  </button>
+                </li>
+              ))}
+          </ul>
+        </aside>
+      </div>
+
+      {/* The draft composer — the SAME form the /setup/tariff page uses, in a modal. */}
+      <Modal
+        open={edit != null}
+        onClose={() => setEdit(null)}
+        title={edit?.id ? t("lab.editDraftTitle") : t("lab.newDraftTitle")}
+        width="max-w-3xl"
+      >
+        {edit && (
+          <div>
+            <div className="mb-4 flex items-center gap-2">
+              <label className="label">{t("lab.draftName")}</label>
+              <input
+                className="input w-72"
+                value={edit.name}
+                onChange={(e) => setEdit((d) => (d ? { ...d, name: e.target.value } : d))}
+                placeholder={t("lab.draftNamePh")}
+              />
+            </div>
+            <TariffEditorForm
+              form={edit.form}
+              onChange={(update) => setEdit((d) => (d ? { ...d, form: update(d.form) } : d))}
+            />
+            <div className="mt-6 flex items-center gap-3">
+              <button type="button" className="btn btn-primary" onClick={saveDraft} disabled={saving || !edit.name.trim()}>
+                {saving ? t("lab.savingDraft") : t("lab.saveDraft")}
+              </button>
+              {editErr && <span className="text-[0.75rem] text-term-red">{editErr}</span>}
+            </div>
+          </div>
+        )}
+      </Modal>
     </section>
   );
 }

apps/web/src/api.ts

@@ -669,10 +669,14 @@ export interface TariffCard {
   priority: number;
   category?: string;
   window?: TariffWindow;
+  /** Flat price PER INCREMENT (an hourly flat rate) — not a whole-stay price. */
   flatMinor?: number;
   blocks?: TariffBlock[];
   /** STEPPED ("up-to") table (defaultCard only); mutually exclusive with flat/blocks. */
   steps?: TariffStep[];
+  /** WINDOW PACKAGE (windowed cards only): ONE total per contiguous window occurrence
+   *  ("any presence in the window = this price"). Mirrors @parking/shared. */
+  packageMinor?: number;
   dailyCapMinor?: number | null;
 }
 /** One row of a STEPPED ("up-to") tariff: a TOTAL price for a stay up to and including
@@ -702,6 +706,8 @@ export function isTariffV2(t: TariffStructure): t is TariffStructureV2 {
 export interface TariffVersion {
   id: string;
   tariffId: string;
+  /** Optional human label, stamped at publish (e.g. carried from a lab draft). */
+  name?: string | null;
   effectiveFrom: string;
   currency: string;
   structure: TariffStructure;
@@ -723,6 +729,7 @@ export function publishTariffVersion(body: {
   currency: string;
   structure: TariffStructure;
   effectiveFrom?: string;
+  name?: string;
 }): Promise<TariffVersion> {
   return apiFetch("/api/tariff/versions", { method: "POST", body: JSON.stringify(body) });
 }
@@ -761,18 +768,40 @@ export function simulateTariff(body: SimulateBody): Promise<SimulateResult> {
   return apiFetch("/api/tariff/simulate", { method: "POST", body: JSON.stringify(body) });
 }
 
-export interface SimSessionLoad {
-  identity: string;
-  enteredAt: string;
-  exitedAt: string | null;
-  payments: SimPayment[];
-  category: string | null;
-  tariffVersionId: string | null;
+// --- Tariff Lab drafts ------------------------------------------------------
+// Mutable experimental rate cards — the lab composes + simulates these, and
+// publishing one goes through the normal immutable-version path above.
+
+export interface TariffDraft {
+  id: string;
+  name: string;
+  currency: string;
+  structure: TariffStructure;
+  createdBy: string | null;
+  createdAt: string;
+  updatedAt: string;
 }
 
-/** Prefill the lab from a real ledger session. */
-export function loadSimSession(identity: string): Promise<SimSessionLoad> {
-  return apiFetch(`/api/tariff/simulate/session/${encodeURIComponent(identity)}`);
+export function fetchTariffDrafts(): Promise<{ drafts: TariffDraft[] }> {
+  return apiFetch("/api/tariff/drafts");
+}
+
+export interface TariffDraftBody {
+  name: string;
+  currency: string;
+  structure: TariffStructure;
+}
+
+export function createTariffDraft(body: TariffDraftBody): Promise<TariffDraft> {
+  return apiFetch("/api/tariff/drafts", { method: "POST", body: JSON.stringify(body) });
+}
+
+export function updateTariffDraft(id: string, body: TariffDraftBody): Promise<TariffDraft> {
+  return apiFetch(`/api/tariff/drafts/${encodeURIComponent(id)}`, { method: "PUT", body: JSON.stringify(body) });
+}
+
+export function deleteTariffDraft(id: string): Promise<void> {
+  return apiFetch(`/api/tariff/drafts/${encodeURIComponent(id)}`, { method: "DELETE" });
 }
 
 // --- Subscriptions --------------------------------------------------------
@@ -1122,6 +1151,8 @@ export interface ShiftSummary extends ShiftSourceSplit {
 export function fetchShifts(params: { operator?: string; from?: string; to?: string } = {}): Promise<{
   shifts: ShiftSummary[];
   scope: "all" | "self";
+  /** Admin scope only: every operator that has a shift — feeds the filter dropdown. */
+  operators?: string[];
 }> {
   const qs = new URLSearchParams();
   if (params.operator) qs.set("operator", params.operator);

apps/web/src/index.css

@@ -13,9 +13,42 @@
    exposed as utilities (night-*, ink-*, paper-*, flag/amber/green/blue, the
    spacing/type/shadow scales) for new work.
 
-   Offline appliance: NO webfont @import (no network at runtime). Goldplay (the
-   TRM display face) is not self-hosted yet — display/heading text falls back to
-   a clean sans stack; wire local Goldplay @font-face here if it's wanted. */
+   Offline appliance: NO webfont @import (no network at runtime). The primary
+   face is Chakra Petch, SELF-HOSTED from public/fonts/chakra-petch (SIL OFL,
+   license alongside the files) — latin subset only (covers en + sq ë/ç), the
+   weights the UI actually uses (400/600/700 + 400 italic). Not a true
+   monospace: it stays FIRST in --font-mono for the look, with the real mono
+   stack behind it as fallback; .num/.tabular still request tabular figures. */
+
+@font-face {
+  font-family: "Chakra Petch";
+  font-style: normal;
+  font-weight: 400;
+  font-display: swap;
+  src: url("/fonts/chakra-petch/chakra-petch-latin-400.woff2") format("woff2");
+}
+@font-face {
+  font-family: "Chakra Petch";
+  font-style: normal;
+  font-weight: 600;
+  font-display: swap;
+  src: url("/fonts/chakra-petch/chakra-petch-latin-600.woff2") format("woff2");
+}
+@font-face {
+  font-family: "Chakra Petch";
+  font-style: normal;
+  font-weight: 700;
+  font-display: swap;
+  src: url("/fonts/chakra-petch/chakra-petch-latin-700.woff2") format("woff2");
+}
+@font-face {
+  font-family: "Chakra Petch";
+  font-style: italic;
+  font-weight: 400;
+  font-display: swap;
+  src: url("/fonts/chakra-petch/chakra-petch-latin-400-italic.woff2") format("woff2");
+}
+
 @theme {
   /* ============================================================
      TERMINAL ACCENTS — aligned onto TRM's exact values.
@@ -92,13 +125,15 @@
   --color-viz-8: #5a5a53;
 
   /* ---------- TYPE — families ---------- */
-  /* Mono is the booth's primary face (data-dense, tabular). Display/UI fall
-     back to a clean sans (Goldplay not self-hosted — see header note). */
-  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, "SFMono-Regular",
-    "Menlo", "Consolas", monospace;
-  --font-display: "Goldplay", "Helvetica Neue", Arial, sans-serif;
-  --font-ui: "Goldplay", "Helvetica Neue", Arial, sans-serif;
-  --font-body: "Inter", "Helvetica Neue", Arial, sans-serif;
+  /* Chakra Petch (self-hosted, see @font-face above) is the booth's primary
+     face everywhere — it leads every stack so headings, body, and the
+     `font-mono` chrome all render with it; the stacks behind it are the
+     pre-2026-07-05 fallbacks for glyphs outside the latin subset. */
+  --font-mono: "Chakra Petch", "JetBrains Mono", "IBM Plex Mono", ui-monospace,
+    "SFMono-Regular", "Menlo", "Consolas", monospace;
+  --font-display: "Chakra Petch", "Helvetica Neue", Arial, sans-serif;
+  --font-ui: "Chakra Petch", "Helvetica Neue", Arial, sans-serif;
+  --font-body: "Chakra Petch", "Inter", "Helvetica Neue", Arial, sans-serif;
 
   /* ---------- TYPE — scale (TRM, optimised for data density) ---------- */
   --text-overline: 11px;

apps/web/src/lib/currencies.ts

@@ -0,0 +1,11 @@
+// The currencies the booth can price in (ISO 4217). Money is always stored as
+// integer minor units + one of these codes; the UI offers a closed select rather
+// than free text so a typo can never publish an unknown currency.
+export const CURRENCIES = ["ALL", "EUR", "USD"] as const;
+
+/** The select options: the known set, plus the current value when it's some
+ *  historical code outside it (so an old record still displays + round-trips). */
+export function currencyOptions(current: string): string[] {
+  const cur = current.trim().toUpperCase();
+  return cur && !CURRENCIES.includes(cur as (typeof CURRENCIES)[number]) ? [...CURRENCIES, cur] : [...CURRENCIES];
+}

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

@@ -319,25 +319,30 @@ export const en: Catalog = {
     bandDuration: "Band duration",
     hoursUnit: "hours",
     egHours: "e.g. 2",
-    pricePerIncrement: "Price / increment",
+    pricePerIncrement: "Price / increment (per hour)",
     thereafter: "thereafter (open-ended)",
     remove: "Remove",
     addBlock: "+ Add block",
     publishNewVersion: "Publish new version",
     publishing: "Publishing…",
+    versionNamePh: "Version name (optional), e.g. Summer 2026",
     publishedOk: "New tariff version published — it's now the active rate.",
     defaultCard: "Base rate (always active)",
     defaultCardHint: "The base rate applied when no time/seasonal tier matches. This alone is enough for most car parks.",
     modeLadder: "Hourly ladder",
-    modeFlat: "Flat price",
+    modeFlat: "Flat price / hour",
     modeStepped: "By duration (up-to)",
+    modePackage: "Window package (one total)",
+    packageHint:
+      "ONE total for any presence inside this tier's window — leaving earlier costs the same. Touching the window on two different nights charges the package twice (once per night). Hours outside the window are priced by the base rate.",
+    packageTotal: "Package total",
     steppedHint:
       "Set the TOTAL price for a stay up to a given time (e.g. up to 3h = 500). The first row whose limit ≥ the duration wins (the limit is inclusive). The last row's total repeats as a per-day price for longer stays.",
     stepUpTo: "Up to",
     stepTotal: "Total price",
     addStep: "+ Add row",
     steppedTiersConflict:
-      "⚠ Time/seasonal tiers do NOT apply when the base rate is 'By duration (up-to)' — the engine ignores them entirely. Remove the tiers, or switch the base rate to 'Hourly ladder' or 'Flat price'. Publishing is blocked until this is fixed.",
+      "⚠ Time/seasonal tiers do NOT apply when the base rate is 'By duration (up-to)' — the engine ignores them entirely. Remove the tiers, or switch the base rate to 'Hourly ladder' or 'Flat price / hour'. Publishing is blocked until this is fixed.",
     tiersAdvanced: "Advanced: time & seasonal tiers",
     tiersHint: "Optional. Add tiers that apply only at certain hours/days/dates or for a category (e.g. happy hour, night rate, weekend, bus). With no tiers, just the base rate is published.",
     tierName: "Name",
@@ -513,21 +518,26 @@ export const en: Catalog = {
   lab: {
     title: "Tariff Lab",
     intro:
-      "Test rates in time (day/night windows, daily caps, overstay) in seconds, with no waiting. Pricing uses the same logic as the booth; nothing is written to the ledger.",
-    loadTicket: "Load from a real ticket",
-    loadTicketPh: "Ticket number / identity",
-    load: "Load",
-    loaded: "Loaded session {{id}}",
-    tariffVersion: "Tariff version",
-    activeVersion: "Active version (current)",
+      "Compose experimental rate cards and price hypothetical stays against them — nothing goes live until you publish. Pricing uses the same logic as the booth; nothing is written to the ledger.",
+    drafts: "Lab tariffs",
+    newDraft: "New draft",
+    activeTariff: "Active tariff",
+    published: "Published versions",
+    noDrafts: "No lab tariffs yet — create a draft to experiment.",
+    edit: "Edit",
+    publish: "Publish",
+    delete: "Delete",
+    draftName: "Name",
+    draftNamePh: "e.g. Winter proposal",
+    saveDraft: "Save draft",
+    savingDraft: "Saving…",
+    newDraftTitle: "New lab tariff",
+    editDraftTitle: "Edit lab tariff",
+    confirmPublish: 'Publish "{{name}}" as the new live rate card? It takes effect immediately.',
+    confirmDelete: 'Delete lab tariff "{{name}}"?',
     entered: "Entered",
-    asOf: "As of (now/exit)",
+    exit: "Exit",
     now: "Now",
-    category: "Category",
-    categoryPh: "e.g. bus (blank = car)",
-    payment: "Payment",
-    paid: "paid",
-    graceMin: "grace (min)",
     price: "Compute price",
     pricing: "Pricing…",
     outcome: "Outcome",

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

@@ -322,25 +322,30 @@ export const sq = {
     bandDuration: "Kohëzgjatja e brezit",
     hoursUnit: "orë",
     egHours: "p.sh. 2",
-    pricePerIncrement: "Çmimi / interval",
+    pricePerIncrement: "Çmimi / interval (orë)",
     thereafter: "më pas (i hapur)",
     remove: "Hiq",
     addBlock: "+ Shto bllok",
     publishNewVersion: "Publiko version të ri",
     publishing: "Duke publikuar…",
+    versionNamePh: "Emri i versionit (opsional), p.sh. Vera 2026",
     publishedOk: "U publikua versioni i ri i tarifës — tani është tarifa aktive.",
     defaultCard: "Tarifa bazë (gjithmonë aktive)",
     defaultCardHint: "Çmimi bazë i zbatuar kur asnjë nivel kohor/sezonal nuk vlen. Kjo e vetme është mjaftueshëm për shumicën e parkimeve.",
     modeLadder: "Shkallë orësh",
-    modeFlat: "Çmim fiks",
+    modeFlat: "Çmim fiks / orë",
     modeStepped: "Sipas kohëzgjatjes (deri-në)",
+    modePackage: "Paketë dritareje (një total)",
+    packageHint:
+      "NJË çmim total për çdo prani brenda dritares së këtij niveli — largimi më herët kushton njësoj. Prekja e dritares në dy net të ndryshme e faturon paketën dy herë (një herë për natë). Orët jashtë dritares vlerësohen me tarifën bazë.",
+    packageTotal: "Çmimi i paketës",
     steppedHint:
       "Vendos çmimin TOTAL për një qëndrim deri në një kohë të caktuar (p.sh. deri 3 orë = 500). Fiton rreshti i parë me kufi ≥ kohëzgjatjes (kufiri përfshihet). Totali i rreshtit të fundit përsëritet si çmim ditor për qëndrime më të gjata.",
     stepUpTo: "Deri në",
     stepTotal: "Çmimi total",
     addStep: "+ Shto rresht",
     steppedTiersConflict:
-      "⚠ Nivelet kohore/sezonale NUK zbatohen kur tarifa bazë është 'Sipas kohëzgjatjes (deri-në)' — motori i shpërfill plotësisht. Hiqi nivelet, ose ndrysho tarifën bazë në 'Shkallë orësh' a 'Çmim fiks'. Publikimi bllokohet derisa kjo të rregullohet.",
+      "⚠ Nivelet kohore/sezonale NUK zbatohen kur tarifa bazë është 'Sipas kohëzgjatjes (deri-në)' — motori i shpërfill plotësisht. Hiqi nivelet, ose ndrysho tarifën bazë në 'Shkallë orësh' a 'Çmim fiks / orë'. Publikimi bllokohet derisa kjo të rregullohet.",
     tiersAdvanced: "Të avancuara: nivele kohore & sezonale",
     tiersHint: "Opsionale. Shto nivele tarifore që vlejnë vetëm në orë/ditë/data ose kategori të caktuara (p.sh. orë e lirë, tarifë nate, fundjavë, autobus). Pa nivele, publikohet vetëm tarifa bazë.",
     tierName: "Emri",
@@ -525,21 +530,26 @@ export const sq = {
   lab: {
     title: "Lab Tarife",
     intro:
-      "Testo tarifat në kohë (dritare ditë/natë, kufi ditor, qëndrim tej afatit) në sekonda, pa pritur orë. Çmimi llogaritet me të njëjtën logjikë si kabina; nuk shkruhet asgjë në ledger.",
-    loadTicket: "Ngarko nga një biletë reale",
-    loadTicketPh: "Numri i biletës / identiteti",
-    load: "Ngarko",
-    loaded: "U ngarkua sesioni {{id}}",
-    tariffVersion: "Versioni i tarifës",
-    activeVersion: "Versioni aktiv (i tanishëm)",
+      "Kompozo tarifa eksperimentale dhe llogarit qëndrime hipotetike kundrejt tyre — asgjë nuk hyn në fuqi pa u publikuar. Çmimi llogaritet me të njëjtën logjikë si kabina; nuk shkruhet asgjë në ledger.",
+    drafts: "Tarifa laboratori",
+    newDraft: "Draft i ri",
+    activeTariff: "Tarifa aktive",
+    published: "Versione të publikuara",
+    noDrafts: "Ende pa tarifa laboratori — krijo një draft për të eksperimentuar.",
+    edit: "Ndrysho",
+    publish: "Publiko",
+    delete: "Fshi",
+    draftName: "Emri",
+    draftNamePh: "p.sh. Propozimi i dimrit",
+    saveDraft: "Ruaj draftin",
+    savingDraft: "Duke ruajtur…",
+    newDraftTitle: "Tarifë e re laboratori",
+    editDraftTitle: "Ndrysho tarifën e laboratorit",
+    confirmPublish: 'Të publikohet "{{name}}" si karta e re aktive e çmimeve? Hyn në fuqi menjëherë.',
+    confirmDelete: 'Të fshihet tarifa e laboratorit "{{name}}"?',
     entered: "Hyrja",
-    asOf: "Deri më (tani/dalja)",
+    exit: "Dalja",
     now: "Tani",
-    category: "Kategoria",
-    categoryPh: "p.sh. bus (bosh = makinë)",
-    payment: "Pagesa",
-    paid: "u pagua",
-    graceMin: "afati (min)",
     price: "Llogarit çmimin",
     pricing: "Duke llogaritur…",
     outcome: "Rezultati",

apps/web/src/router.tsx

@@ -117,9 +117,10 @@ function SetupLayout() {
 }
 
 /** Subscriptions layout — a standalone top-level section (its own header nav entry),
- *  with tabs for the subscriber catalog, the plan catalog, and the tariff lab. Each
- *  tab is a gated child route; an operator with only subscription:read sees just the
- *  first tab. */
+ *  with tabs for the subscriber catalog and the plan catalog. Each tab is a gated
+ *  child route; an operator with only subscription:read sees just the first tab.
+ *  (The tariff lab moved to /setup/tariff/lab, 2026-07-05 — it tests the tariff, so
+ *  it lives with the tariff.) */
 function SubscriptionsLayout() {
   const { user } = rootRoute.useRouteContext();
   const { t } = useTranslation();
@@ -129,7 +130,21 @@ function SubscriptionsLayout() {
       <nav className="mb-4 flex flex-wrap items-center gap-1 border-b border-term-border">
         {show("subscription:read") && <SetupTab to="/subscriptions" label={t("nav.subscriptions")} exact />}
         {show("subscription:plan") && <SetupTab to="/subscriptions/plans" label={t("nav.plans")} />}
-        {show("tariff:read") && <SetupTab to="/subscriptions/tariff-lab" label={t("nav.tariffLab")} />}
+      </nav>
+      <Outlet />
+    </div>
+  );
+}
+
+/** Tariff layout — the rate-card hub under Setup: the composer (index) and the
+ *  pricing LAB as sub-tabs. One tariff:read gate on the parent covers both. */
+function TariffLayout() {
+  const { t } = useTranslation();
+  return (
+    <div>
+      <nav className="mb-2 flex flex-wrap items-center gap-1 border-b border-term-border">
+        <SetupTab to="/setup/tariff" label={t("nav.tariff")} exact />
+        <SetupTab to="/setup/tariff/lab" label={t("nav.tariffLab")} />
       </nav>
       <Outlet />
     </div>
@@ -519,7 +534,10 @@ const legacyRedirects = (
     ["/shift", "/shifts"],
     ["/setup/subscriptions", "/subscriptions"],
     ["/setup/plans", "/subscriptions/plans"],
-    ["/setup/tariff-lab", "/subscriptions/tariff-lab"],
+    // The tariff lab bounced twice: /setup/tariff-lab → /subscriptions/tariff-lab
+    // (2026-06-21) → /setup/tariff/lab (2026-07-05, back with the tariff it tests).
+    ["/setup/tariff-lab", "/setup/tariff/lab"],
+    ["/subscriptions/tariff-lab", "/setup/tariff/lab"],
     ["/setup/shifts", "/shifts"],
     ["/setup/reports", "/reports"],
   ] as const
@@ -633,8 +651,20 @@ const tariffRoute = createRoute({
   getParentRoute: () => setupRoute,
   path: "tariff",
   beforeLoad: ({ context }) => requirePerm("tariff:read")(context),
+  component: TariffLayout,
+});
+const tariffComposerRoute = createRoute({
+  getParentRoute: () => tariffRoute,
+  path: "/",
   component: () => <TariffComposer />,
 });
+// The tariff LAB — lives with the tariff it tests (moved from /subscriptions,
+// 2026-07-05). The parent's tariff:read gate covers it.
+const tariffLabRoute = createRoute({
+  getParentRoute: () => tariffRoute,
+  path: "lab",
+  component: () => <TariffLab />,
+});
 
 // --- /subscriptions — a standalone top-level section with its own tabs. The catalog
 //     (index), the plan catalog, and the tariff lab live here, not under /setup. ---
@@ -651,7 +681,6 @@ const subscriptionsIndexRoute = createRoute({
   beforeLoad: ({ context }) => {
     if (can(context.user, "subscription:read")) return;
     if (can(context.user, "subscription:plan")) throw redirect({ to: "/subscriptions/plans" });
-    if (can(context.user, "tariff:read")) throw redirect({ to: "/subscriptions/tariff-lab" });
     throw redirect({ to: "/booth" });
   },
   component: function SubscriptionsRoute() {
@@ -665,12 +694,6 @@ const subscriptionPlansRoute = createRoute({
   beforeLoad: ({ context }) => requirePerm("subscription:plan")(context),
   component: () => <SubscriptionPlansManager />,
 });
-const tariffLabRoute = createRoute({
-  getParentRoute: () => subscriptionsRoute,
-  path: "tariff-lab",
-  beforeLoad: ({ context }) => requirePerm("tariff:read")(context),
-  component: () => <TariffLab />,
-});
 const siteRoute = createRoute({
   getParentRoute: () => setupRoute,
   path: "site",
@@ -751,11 +774,10 @@ const routeTree = rootRoute.addChildren([
   subscriptionsRoute.addChildren([
     subscriptionsIndexRoute,
     subscriptionPlansRoute,
-    tariffLabRoute,
   ]),
   setupRoute.addChildren([
     setupDevicesRoute,
-    tariffRoute,
+    tariffRoute.addChildren([tariffComposerRoute, tariffLabRoute]),
     siteRoute,
     usersRoute,
     rolesRoute,

packages/db/drizzle/0021_tariff_drafts.sql

@@ -0,0 +1,14 @@
+-- Tariff-lab drafts (2026-07-05). A mutable scratchpad for the lab: the admin composes
+-- experimental rate cards here, simulates them against hypothetical stays, and only
+-- PUBLISHES (normal immutable tariff_versions path) when satisfied. Deliberately mutable —
+-- a draft prices nothing and signs nothing; experimenting through real publishes would
+-- churn permanent versions and risk a wrong card going live. See wiki/concepts/tariff.md.
+CREATE TABLE `tariff_drafts` (
+	`id` text PRIMARY KEY NOT NULL,
+	`name` text NOT NULL,
+	`currency` text NOT NULL,
+	`structure` text NOT NULL,
+	`created_by` text,
+	`created_at` text DEFAULT (current_timestamp) NOT NULL,
+	`updated_at` text DEFAULT (current_timestamp) NOT NULL
+);

packages/db/drizzle/0022_tariff_version_name.sql

@@ -0,0 +1,6 @@
+-- Optional name on published tariff versions (2026-07-05). The lab's draft workflow gave
+-- rate cards human names; published versions were only tellable apart by effective date +
+-- UUID prefix. The name is stamped at publish (carried from the lab draft, or typed in the
+-- composer) and is immutable like the rest of the row. Nullable — old versions and unnamed
+-- publishes are fine.
+ALTER TABLE `tariff_versions` ADD `name` text;

packages/db/drizzle/meta/_journal.json

@@ -148,6 +148,20 @@
       "when": 1781886300000,
       "tag": "0020_entry_presence_bypass",
       "breakpoints": true
+    },
+    {
+      "idx": 21,
+      "version": "6",
+      "when": 1781886400000,
+      "tag": "0021_tariff_drafts",
+      "breakpoints": true
+    },
+    {
+      "idx": 22,
+      "version": "6",
+      "when": 1781886500000,
+      "tag": "0022_tariff_version_name",
+      "breakpoints": true
     }
   ]
 }

packages/db/src/schema.ts

@@ -316,6 +316,10 @@ export const tariffs = sqliteTable("tariffs", {
 export const tariffVersions = sqliteTable("tariff_versions", {
   id: text("id").primaryKey(),
   tariffId: text("tariff_id").notNull(),
+  // Optional human label ("Winter 2027", carried from the lab draft it was published
+  // from). Stamped at publish, immutable like the rest of the row — versions are
+  // told apart in the UI by name, not UUID prefix.
+  name: text("name"),
   // The version is in force from this instant (latest with effectiveFrom ≤ entry wins).
   effectiveFrom: text("effective_from").notNull(),
   // ISO 4217; selectable. Money everywhere is { minorUnits, currency }, never a float.
@@ -329,6 +333,29 @@ export const tariffVersions = sqliteTable("tariff_versions", {
     .default(sql`(current_timestamp)`),
 });
 
+// A LAB DRAFT rate card — the tariff-lab scratchpad. MUTABLE by design (the one
+// exception to "editing publishes a version"): a draft prices nothing and signs
+// nothing — it exists so the admin can experiment in the lab without churning real
+// tariff_versions (each publish is permanent; experimenting through publishes would
+// bury the history in noise and risk a wrong card going live). Publishing a draft
+// goes through the normal POST /api/tariff/versions path (validated, tz-stamped,
+// immutable). See wiki/concepts/tariff.md (Tariff Lab).
+export const tariffDrafts = sqliteTable("tariff_drafts", {
+  id: text("id").primaryKey(),
+  name: text("name").notNull(),
+  currency: text("currency").notNull(),
+  // Same TariffStructure shape as tariff_versions.structure; validated on save so
+  // the lab can always simulate it.
+  structure: text("structure", { mode: "json" }).notNull().$type<Record<string, unknown>>(),
+  createdBy: text("created_by"),
+  createdAt: text("created_at")
+    .notNull()
+    .default(sql`(current_timestamp)`),
+  updatedAt: text("updated_at")
+    .notNull()
+    .default(sql`(current_timestamp)`),
+});
+
 // --- Subscriptions --------------------------------------------------------
 // A subscriber: a known holder who parks on a recurring plan (e.g. 10,000 ALL /
 // month) instead of paying per stay. Mutable master data; every USE still produces a
@@ -513,6 +540,7 @@ export type SetupStateRow = typeof setupState.$inferSelect;
 export type SiteConfigRow = typeof siteConfig.$inferSelect;
 export type TariffRow = typeof tariffs.$inferSelect;
 export type TariffVersionRow = typeof tariffVersions.$inferSelect;
+export type TariffDraftRow = typeof tariffDrafts.$inferSelect;
 export type SubscriptionRow = typeof subscriptions.$inferSelect;
 export type SubscriptionPlanRow = typeof subscriptionPlans.$inferSelect;
 export type SubscriptionCredentialRow = typeof subscriptionCredentials.$inferSelect;

packages/shared/src/index.ts

@@ -606,8 +606,9 @@ export interface TariffWindow {
   readonly toHour?: string;
 }
 
-/** A V2 pricing card: a flat rate OR a stepped block ladder (with its own cap).
- *  `flatMinor` and `blocks` are mutually exclusive. The defaultCard has no window. */
+/** A V2 pricing card: a per-increment flat rate, a block ladder, a stepped table
+ *  (defaultCard only), or a whole-window package (windowed cards only). The pricing
+ *  fields are mutually exclusive — exactly one. The defaultCard has no window. */
 export interface TariffCard {
   /** Human label (also the final, deterministic precedence tiebreak). */
   readonly name: string;
@@ -617,13 +618,21 @@ export interface TariffCard {
   readonly category?: string;
   /** Wall-clock activation window. Absent only on the defaultCard (always active). */
   readonly window?: TariffWindow;
-  /** Flat price per billing increment (mutually exclusive with `blocks`/`steps`). */
+  /** Flat price PER BILLING INCREMENT (an hourly flat rate at increment 60) —
+   *  mutually exclusive with the other pricing fields. NOT a whole-stay price;
+   *  for "one total for the whole window" use `packageMinor`. */
   readonly flatMinor?: number;
-  /** Marginal block ladder (mutually exclusive with `flatMinor`/`steps`); last open-ended. */
+  /** Marginal block ladder (mutually exclusive with the other pricing fields); last open-ended. */
   readonly blocks?: readonly TariffBlock[];
-  /** STEPPED ("up-to") total-by-duration table (mutually exclusive with `flatMinor`/
-   *  `blocks`). The top tier's total is this card's per-day price. */
+  /** STEPPED ("up-to") total-by-duration table (mutually exclusive with the other
+   *  pricing fields; defaultCard only). The top tier's total is the per-day price. */
   readonly steps?: readonly TariffStep[];
+  /** WINDOW PACKAGE (windowed cards only, 2026-07-05): ONE total charged per
+   *  contiguous occurrence of this card winning increments — e.g. "any presence in
+   *  the 20:00–07:00 window = 400, leave earlier and it's still 400". Any touch of
+   *  the window pays the full package; a stay spanning two nights pays it twice
+   *  (once per occurrence). Mutually exclusive with the other pricing fields. */
+  readonly packageMinor?: number;
   /** Cap per rolling 24h for THIS card's ladder. Only the defaultCard's cap governs
    *  a mixed day (see computeFeeV2). null = no cap. */
   readonly dailyCapMinor?: number | null;
@@ -856,18 +865,30 @@ function computeFeeV2(
   if (hasSteps(tariff.defaultCard)) return steppedFee(minutes, tariff.defaultCard.steps!);
 
   let total = 0;
+  // WINDOW-PACKAGE tracking (2026-07-05): a `packageMinor` card charges ONE total per
+  // contiguous run of increments it wins (an "occurrence" — e.g. one night), however
+  // little of the window the car actually used. The tracker survives the day-segment
+  // loop so a night run crossing the rolling-24h boundary charges once, not twice;
+  // the charge lands in the segment where the occurrence starts (that day's cap
+  // applies to it). A stay touching the window on two different nights = two
+  // occurrences = two charges.
+  let prevWinner: TariffCard | null = null;
   for (let segStart = 0; segStart < minutes; segStart += DAY) {
     const segEnd = Math.min(segStart + DAY, minutes);
     let segFee = 0;
     for (let within = segStart; within < segEnd; within += inc) {
       const wall = localBreakdown(enteredMs + within * 60_000, tariff.tz);
       const card = selectCard(cards, wall);
-      if (card.flatMinor != null) {
+      if (card.packageMinor != null) {
+        // First increment of a new occurrence pays the package; the rest ride free.
+        if (prevWinner !== card) segFee += card.packageMinor;
+      } else if (card.flatMinor != null) {
         segFee += card.flatMinor;
       } else {
         // Ladder position = minutes into THIS rolling-24h day (resets each day, V1 rule).
         segFee += rateAt(card.blocks ?? [], within - segStart);
       }
+      prevWinner = card;
     }
     if (dayCap != null) segFee = Math.min(segFee, dayCap);
     total += segFee;
@@ -983,9 +1004,17 @@ function validateCard(c: Partial<TariffCard> | undefined, label: string, isDefau
   const hasFlat = c.flatMinor != null;
   const hasBlocks = c.blocks != null;
   const hasStepTable = c.steps != null;
-  const modes = [hasFlat, hasBlocks, hasStepTable].filter(Boolean).length;
+  const hasPackage = c.packageMinor != null;
+  const modes = [hasFlat, hasBlocks, hasStepTable, hasPackage].filter(Boolean).length;
   if (modes !== 1) {
-    errs.push(`${label} must set exactly one of flatMinor, blocks, or steps`);
+    errs.push(`${label} must set exactly one of flatMinor, blocks, steps, or packageMinor`);
+  } else if (hasPackage) {
+    // A whole-window package needs a window to be an occurrence of — meaningless on
+    // the always-active defaultCard (a base "one price per stay/day" is a 1-row
+    // stepped table there). See wiki/concepts/tariff-time-tiers.md.
+    if (isDefault) errs.push(`${label}: packageMinor (whole-window package) is only allowed on a windowed card`);
+    nonNegInt(c.packageMinor, `${label}.packageMinor`, errs);
+    if (c.dailyCapMinor != null) errs.push(`${label}: dailyCapMinor does not apply to a window package (the package IS the window's total)`);
   } else if (hasFlat) {
     nonNegInt(c.flatMinor, `${label}.flatMinor`, errs);
     if (c.dailyCapMinor != null) errs.push(`${label}: dailyCapMinor applies to a block ladder, not a flat rate`);

packages/shared/src/tariff.test.ts

@@ -223,7 +223,7 @@ describe("validate V2", () => {
   });
   it("rejects a card with both flat and blocks", () => {
     const errs = validateTariffStructure({ ...base, defaultCard: { name: "d", priority: 0, flatMinor: 100, blocks: ladder(100) } });
-    expect(errs).toContain("defaultCard must set exactly one of flatMinor, blocks, or steps");
+    expect(errs).toContain("defaultCard must set exactly one of flatMinor, blocks, steps, or packageMinor");
   });
   it("rejects defaultCard with a window", () => {
     const errs = validateTariffStructure({ ...base, defaultCard: { ...okDefault, window: { dow: [1] } } });
@@ -383,3 +383,57 @@ describe("stepped (up-to) pricing — owner matrix", () => {
     expect(validateTariffStructure(capped).some((e) => /dailyCap/i.test(e))).toBe(true);
   });
 });
+
+// ---------------------------------------------------------------------------
+// (j) WINDOW PACKAGE (packageMinor) — "any presence in the window = one total".
+// Charged once per contiguous occurrence of the card winning increments; any touch
+// pays the full package; a run crossing the rolling-24h boundary charges ONCE.
+// Base: open-ended 100/h ladder (minor 10000). Night card: 20:00–07:00 = 40000.
+// tz Europe/Tirane (summer = UTC+2); windows carry no dow so weekday is irrelevant.
+// ---------------------------------------------------------------------------
+describe("V2 window package (whole-window total)", () => {
+  const pkg: TariffStructureV2 = {
+    version: 2,
+    tz: "Europe/Tirane",
+    gracePeriodEntryMin: 0,
+    incrementMin: 60,
+    lostTicketMinor: 0,
+    gracePeriodExitMin: 5,
+    overstay: "reprice",
+    defaultCard: { name: "default", priority: 0, blocks: [{ uptoMin: null, priceMinorPerIncrement: 10000 }], dailyCapMinor: null },
+    windowedCards: [{ name: "night", priority: 10, packageMinor: 40000, window: { fromHour: "20:00", toHour: "07:00" } }],
+  };
+  const fee = (enter: string, exit: string) => computeFee(enter, exit, pkg);
+
+  it("leave early, the package stays: 22:00→23:30 (90 min in-window) = 40000", () => {
+    expect(fee("2026-06-16T22:00:00+02:00", "2026-06-16T23:30:00+02:00")).toBe(40000);
+  });
+
+  it("any touch pays full: 06:00→06:45 (45 min at the window's tail) = 40000", () => {
+    expect(fee("2026-06-16T06:00:00+02:00", "2026-06-16T06:45:00+02:00")).toBe(40000);
+  });
+
+  it("increments inside one occurrence add nothing: a full night 20:00→07:00 = 40000", () => {
+    expect(fee("2026-06-16T20:00:00+02:00", "2026-06-17T07:00:00+02:00")).toBe(40000);
+  });
+
+  it("mixed 29h stay: two occurrences + day hours; the run over the rolling-day boundary charges ONCE", () => {
+    // Enter Tue 02:00, exit Wed 07:00 (29 increments). Occurrence 1: 02:00–06:00 (the
+    // overnight window's tail) = 40000. Base: 07:00–19:00 = 13 × 10000. Occurrence 2:
+    // Tue 20:00 → Wed 06:00 — CROSSES the rolling-24h boundary (Wed 02:00) but is one
+    // contiguous run → one 40000, not two. Total 40000 + 130000 + 40000 = 210000.
+    expect(fee("2026-06-16T02:00:00+02:00", "2026-06-17T07:00:00+02:00")).toBe(210000);
+  });
+
+  it("validates: package on the defaultCard is rejected", () => {
+    const bad = { ...pkg, defaultCard: { name: "d", priority: 0, packageMinor: 40000 } };
+    expect(validateTariffStructure(bad).some((e) => /only allowed on a windowed card/.test(e))).toBe(true);
+  });
+
+  it("validates: package is exclusive with other pricing fields + the cap", () => {
+    const both = { ...pkg, windowedCards: [{ name: "n", priority: 1, packageMinor: 1, flatMinor: 1, window: { dow: [1] } }] };
+    expect(validateTariffStructure(both).some((e) => /exactly one of/.test(e))).toBe(true);
+    const capped = { ...pkg, windowedCards: [{ name: "n", priority: 1, packageMinor: 1, dailyCapMinor: 100, window: { dow: [1] } }] };
+    expect(validateTariffStructure(capped).some((e) => /dailyCapMinor does not apply to a window package/.test(e))).toBe(true);
+  });
+});

wiki/concepts/tariff-time-tiers.md

@@ -2,7 +2,7 @@
 type: concept
 tags: [parking, domain, business, pricing, design]
 sources: [parksql2017-legacy-schema]
-updated: 2026-06-18
+updated: 2026-07-05
 status: settled
 ---
 
@@ -140,7 +140,22 @@ case stays one rate card; tiers are opt-in.
   `DEFAULT_VEHICLE_CATEGORY` in `@parking/shared`). Per-relay capture (a "bus lane") is the future
   seam, mirroring per-relay direction.
 - **Flat rate** is a first-class card body (`flatMinor`, mutually exclusive with `blocks`). A flat V1
-  is published as a single open-ended block (V1 has no flat field).
+  is published as a single open-ended block (V1 has no flat field). ⚠ `flatMinor` is **per billing
+  increment** (an hourly flat rate at increment 60) — NOT a whole-stay/whole-window price. This was
+  misread in the field (park-buzi published a "night 400" believing it covered the night; it billed
+  400/h, 2026-07-05) — the UI now labels it "Flat price / hour" and the whole-window need got its own
+  mode:
+- **WINDOW PACKAGE (`packageMinor`, 2026-07-05 — windowed cards only).** "Any presence in this
+  window = ONE total" (the real night rate: 20:00–07:00 = 400, leave earlier and it's still 400).
+  Decisions (operator, 2026-07-05): charged **once per occurrence** (a stay touching two nights pays
+  twice); **any touch pays full** (an 06:30 arrival before the 07:00 close pays the whole package —
+  package pricing's accepted sharp edge); **not offered on the base card** (a base "one price per
+  day" is a 1-row up-to table — no duplicate concept). Engine: one charge per **contiguous run of
+  increments the card wins**, tracked across rolling-day segments so a night crossing the 24h
+  boundary charges once; out-of-window increments price by the base rate as usual; the charge lands
+  in the day segment where the occurrence starts (that day's default-card cap applies). Mutually
+  exclusive with flat/blocks/steps + no per-card cap (the package IS the window's total); validator
+  enforces both and the composer offers the mode only on tier cards.
 - **UI** (`TariffComposer.tsx`): default card **front-and-centre** (flat/ladder toggle + cap); tiers
   under a collapsed **"Advanced: time & seasonal tiers"** disclosure (window builder — dow checkboxes,
   optional date range, optional hour range with an overnight hint; category; priority; flat/ladder

wiki/concepts/tariff.md

@@ -197,24 +197,44 @@ The admin authors the rate card at runtime — no hand-seeding:
 - Ships **blank** — until a version is published, `GET /api/tariff` returns `active: null` and the
   pay station returns `409 no active tariff`. Verified end to end (publish → pay station prices).
 
-### Tariff Lab (simulator, as-built 2026-06-20)
+### Tariff Lab (simulator, as-built 2026-06-20; drafts redesign 2026-07-05)
 
 The tariff engine is a **pure function of time**, but you could previously only *exercise* it by
 waiting (the only clock the booth reads is the real wall-clock). The **Tariff Lab** closes that gap:
-price a session at **any** instant against **any** tariff version in seconds.
+compose an **experimental rate card**, price hypothetical stays against it in seconds, and publish
+only when satisfied.
 
-- **API** (`apps/server/src/routes/tariffs.ts`, `tariff:read` — admins always have it; available
-  on-site too, useful to quote a customer dispute): `POST /api/tariff/simulate` prices a hypothetical
+- **Drafts (`tariff_drafts` table, 2026-07-05).** The lab's rate cards live in their own **mutable**
+  table — the one deliberate exception to "editing publishes a version". Rationale (operator ask,
+  2026-07-05): experimenting by publishing real versions churns the immutable history with noise AND
+  risks a wrong card being live while the admin iterates ("we risk taking tickets with a grossly
+  wrong version"). A draft prices nothing and signs nothing, so mutability is safe; the ONLY way a
+  draft affects a customer is publication through the normal `POST /api/tariff/versions` path
+  (validated, tz-stamped, immutable, effectiveFrom-guarded). Drafts are **validated + tz-stamped on
+  save exactly like a publish**, so a saved draft can always be simulated and "Publish" can never
+  fail on a card that saved fine.
+- **API** (`apps/server/src/routes/tariffs.ts`): `GET/POST/PUT/DELETE /api/tariff/drafts[...]`
+  (list `tariff:read`; mutations `tariff:update`). `POST /api/tariff/simulate` prices a hypothetical
   session — body `{enteredAt, asOf, payments[], category?, tariffVersionId? | structure?}` — and
   returns the full `priceSession` outcome plus a **duration curve** (fee from entry at 30m…3d, so you
-  SEE where the daily cap flattens or a window shifts). `GET /api/tariff/simulate/session/:identity`
-  prefills from a **real ledger session** (entry + payments + the version frozen at entry). Both are
-  **read-only — no ledger writes.**
-- **UI** (`apps/web/src/TariffLab.tsx`, Setup → "Tariff Lab"): pick a version (active or any
-  historical), set entry / "as of" times, an optional payment (with its grace), and a category; or
-  "Load" a real ticket to re-evaluate it at any moment. Shows amount due, billed period, overstay/
-  settled state, and the curve. Prices via the same `priceSession` the booth uses (verified: a real
-  overstay ticket reads identically in the lab and the booth). See [[booth-exit-flow]] (overstay).
+  SEE where the daily cap flattens or a window shifts); the lab passes a draft's stored `structure`
+  inline. `GET /api/tariff/simulate/session/:identity` (prefill from a real ledger session) still
+  exists API-side but the UI no longer uses it. All **read-only — no ledger writes.**
+- **UI** (`apps/web/src/TariffLab.tsx`, Setup → Tariff → "Tariff Lab" tab): a **sidebar lists every
+  lab draft AND the full published history** (active card first, then older immutable versions) —
+  click any to price against it (drafts send their structure inline; published versions go by
+  `tariffVersionId`). Published versions carry an **optional name** (`tariff_versions.name`,
+  migration 0022, stamped at publish and immutable like the row): publishing a draft carries the
+  draft's name onto the version, and the composer page grew an optional version-name field — so
+  history reads "Winter 2027", not UUID prefixes. The main pane is a pure
+  **entry/exit** pair (the 2026-06-20 ticket-loader, payment, and category inputs were dropped in the
+  redesign — the lab is for composing rates, not re-evaluating tickets) plus amount due, billed
+  period, overstay/settled state, and the curve. **"New draft" / "Edit" open the composer form in a
+  modal** — the *same* form the `/setup/tariff` page uses, extracted to
+  `apps/web/src/TariffEditorForm.tsx` (new drafts prefill from the active card). Per-draft
+  **Publish** (confirm prompt) goes through the normal immutable-version path. Prices via the same
+  `priceSession` the booth uses, so the lab and the live booth can never diverge.
+  See [[booth-exit-flow]] (overstay).
 
 ## The pay-on-foot consequence
 

wiki/log.md

@@ -2282,3 +2282,41 @@ ISO-8601 UTC + level names (pinoDbStream hardened to accept both encodings so th
 silently break). Rotation: docker json-file caps in docker-compose.prod.yml resized from 10m×3
 (≈30 MB!) to ≈2 months by volume (server 20m×30, vision 20m×10, proxy 10m×5; json-file rotates by
 SIZE — time-based isn't a driver feature). app_logs retention default aligned 30→60 days.
+
+## [2026-07-05] update | Window-package tariff mode (packageMinor) + honest flat labels
+
+Tariff-lab verification of a 1,850 ALL bill exposed a field misread: the V2 card "flat price" is
+PER INCREMENT (400/h), not per window — park-buzi's "night 400" card billed each night hour 400.
+Built the missing concept on [[tariff-time-tiers]]: `packageMinor`, a whole-window package
+("any presence in 20:00–07:00 = 400 total"). Operator decisions: per-occurrence repeat (two nights
+= two charges), any-touch-pays-full, windowed-cards-only (base "price per day" = a 1-row up-to
+table). Engine charges once per contiguous run of increments the card wins, tracked across
+rolling-day segments (a night crossing the 24h boundary charges once). Validator: exclusive with
+flat/blocks/steps, no per-card cap, defaultCard forbidden. Composer offers the mode on tier cards;
+flat relabeled "Flat price / hour" (sq+en). Also flagged from the same session: windowed-card
+dailyCapMinor is inert by design (only the base card's cap clamps a day) — park-buzi's weekend
+card carries a dead 1000 cap. Tests: shared 93 green (6 new), server 283 green.
+
+## [2026-07-05] update | Tariff Lab redesign: DB-backed drafts, sidebar, composer modal
+
+The lab previously simulated only against PUBLISHED versions, so experimenting meant publishing —
+churning the immutable history and risking real tickets pricing against a half-baked card while
+the admin iterated (operator: "we risk taking tickets with a grossly wrong version"). Redesign on
+[[tariff]] (Tariff Lab section): new mutable `tariff_drafts` table (migration 0021 — the one
+deliberate exception to "editing publishes a version"; a draft prices/signs nothing, only the
+normal publish path makes it real), drafts validated + tz-stamped on save exactly like a publish,
+CRUD under /api/tariff/drafts (list tariff:read, mutations tariff:update). UI rebuilt: sidebar
+lists active card + drafts (click to price against), main pane cut to pure entry/exit (ticket
+loader, payment, category inputs dropped), composer form extracted to TariffEditorForm.tsx and
+reused in a modal (new drafts prefill from the active card), per-draft Publish with confirm.
+Simulation passes the draft's stored structure inline to the existing /api/tariff/simulate.
+Tests: server 288 green (5 new: RBAC, roundtrip, validation, tz-stamp + simulate + publish flow).
+
+## [2026-07-05] update | Published tariff versions get optional names + lab sidebar lists history
+
+Follow-up to the lab redesign (same session): the sidebar now also lists the PUBLISHED versions
+(active first, then the immutable history; click to price against by tariffVersionId), and
+`tariff_versions` gained a nullable `name` (migration 0022) — stamped at publish, immutable like
+the row. Publishing a lab draft carries the draft's name onto the version; the composer page grew
+an optional version-name field (never prefilled — republishing a tweak under last season's name
+would mislabel history). Details on [[tariff]] (Tariff Lab section).