_db.py

@@ -18,9 +18,9 @@ from __future__ import annotations
 
 from contextlib import contextmanager
 
-from app.db.mariadb import engine, run_select_query  # noqa: F401  (kernel DB layer)
+from app.db.mariadb import engine, run_select_query, cached_select  # noqa: F401  (kernel DB layer)
 
-__all__ = ["run_select_query", "transaction", "engine"]
+__all__ = ["run_select_query", "cached_select", "transaction", "engine"]
 
 
 @contextmanager

api/routes.py

@@ -51,7 +51,7 @@ from pydantic import BaseModel, ConfigDict
 from sqlalchemy import text
 from starlette import status
 
-from .._db import run_select_query, transaction
+from .._db import run_select_query, cached_select, transaction
 
 logger = logging.getLogger(__name__)
 
@@ -96,7 +96,9 @@ def _press_list(plant: str, entry_presses: set[str]) -> list[str]:
     if the registry is unavailable. Numeric press ids sort numerically."""
     presses: set[str] = set(entry_presses)
     try:
-        rows = run_select_query(
+        # Reference registry (admin-edited); served from cache so it's off the pool each poll.
+        rows = cached_select(
+            f"trj:presses:{plant}",
             "SELECT psPress AS p FROM press_settings.presses WHERE psPlant = :plant",
             {"plant": plant},
         )
@@ -172,71 +174,77 @@ def _good_parts_map(plant: str, pairs: set[tuple[str, str]]) -> dict[tuple[str,
         return {}
     import json
 
-    by_press: dict[str, list[str]] = defaultdict(list)
-    for p, o in pairs:
-        by_press[p].append(o)
+    # Batched across ALL presses: 3 grouped queries total (was 3 per press = N+1).
+    # Semantics preserved from the per-press version — only the query scope changed
+    # (grouped by press). On any DB error the whole map degrades to {} (the caller's
+    # _flow_for then treats notYetSent as 0), matching the sibling _temper_agg_map.
+    presses = sorted({p for p, _ in pairs})
+    orders = sorted({o for _, o in pairs})
+    pbinds = {f"p{i}": p for i, p in enumerate(presses)}
+    obinds = {f"o{i}": o for i, o in enumerate(orders)}
+    pin = ", ".join(f":p{i}" for i in range(len(presses)))
+    oin = ", ".join(f":o{i}" for i in range(len(orders)))
+    try:
+        # 1) cavities per (press, order) — one query.
+        cav_by: dict[tuple[str, str], int] = {
+            (str(r["press"]), str(r["o"])): int(r["cav"] or 0)
+            for r in run_select_query(
+                "SELECT aoPress AS press, aoOrdernumber AS o, aoCavities AS cav "
+                "FROM production.active_orders "
+                f"WHERE aoPlant = :plant AND aoPress IN ({pin}) AND aoOrdernumber IN ({oin})",
+                {"plant": plant, **pbinds, **obinds},
+            )
+        }
+        if not cav_by:
+            return {}  # none of these orders are active → notYetSent stays 0
+
+        # 2) cycle counts grouped by (Press, Joborder) — one scan. Joborder is unfiltered
+        #    (a plain order number OR a JSON array), matched to orders in Python below.
+        cyc_by_press: dict[str, list[tuple[Any, int]]] = defaultdict(list)
+        for cr in run_select_query(
+            "SELECT Press AS press, Joborder AS jo, COUNT(*) AS c "
+            f"FROM production.cycles_new WHERE Press IN ({pin}) GROUP BY Press, Joborder",
+            pbinds,
+        ):
+            cyc_by_press[str(cr["press"])].append((cr["jo"], int(cr["c"] or 0)))
+
+        # 3) rejects summed per (press, order) — one grouped query.
+        rej_by: dict[tuple[str, str], int] = {
+            (str(rr["press"]), str(rr["o"])): int(rr["total"] or 0)
+            for rr in run_select_query(
+                "SELECT rejPress AS press, rejOrdernumber AS o, "
+                "COALESCE(SUM(rejQuantity),0) AS total FROM production.rejects "
+                f"WHERE rejPress IN ({pin}) AND rejOrdernumber IN ({oin}) "
+                "GROUP BY rejPress, rejOrdernumber",
+                {**pbinds, **obinds},
+            )
+        }
+    except Exception as e:  # noqa: BLE001 — whole map degrades to {} (matches _temper_agg_map)
+        logger.warning("good-parts derivation failed: %s", e)
+        return {}
+
+    def _cycles_for(press: str, orderno: str) -> int:
+        total = 0
+        for jo, c in cyc_by_press.get(press, ()):
+            if jo is None:
+                continue
+            if jo == orderno:
+                total += c
+            elif isinstance(jo, str) and orderno in jo:
+                try:
+                    arr = json.loads(jo)
+                except Exception:  # noqa: BLE001
+                    arr = None
+                if isinstance(arr, list) and orderno in arr:
+                    total += c
+        return total
 
     result: dict[tuple[str, str], int] = {}
-    for press, orders in by_press.items():
-        try:
-            obinds: dict[str, Any] = {"plant": plant, "press": press}
-            for i, o in enumerate(orders):
-                obinds[f"o{i}"] = o
-            oin = ", ".join(f":o{i}" for i in range(len(orders)))
-
-            # 1) cavities + target per active order (article/qty snapshot).
-            active = run_select_query(
-                "SELECT aoOrdernumber AS o, aoCavities AS cav FROM production.active_orders "
-                f"WHERE aoPlant = :plant AND aoPress = :press AND aoOrdernumber IN ({oin})",
-                obinds,
-            )
-            cav_by_order = {str(r["o"]): int(r["cav"] or 0) for r in active}
-            if not cav_by_order:
-                continue  # none of these orders are active → notYetSent stays 0
-
-            # 2) cycle counts grouped by Joborder (one scan for the press).
-            cyc_groups = [
-                (cr["jo"], int(cr["c"] or 0))
-                for cr in run_select_query(
-                    "SELECT Joborder AS jo, COUNT(*) AS c FROM production.cycles_new "
-                    "WHERE Press = :press GROUP BY Joborder",
-                    {"press": press},
-                )
-            ]
-
-            # 3) rejects summed per order (one grouped query).
-            rej_by_order: dict[str, int] = {}
-            for rr in run_select_query(
-                "SELECT rejOrdernumber AS o, COALESCE(SUM(rejQuantity),0) AS total "
-                "FROM production.rejects WHERE rejPress = :press "
-                f"AND rejOrdernumber IN ({oin}) GROUP BY rejOrdernumber",
-                obinds,
-            ):
-                rej_by_order[str(rr["o"])] = int(rr["total"] or 0)
-
-            def _cycles_for(orderno: str) -> int:
-                total = 0
-                for jo, c in cyc_groups:
-                    if jo is None:
-                        continue
-                    if jo == orderno:
-                        total += c
-                    elif isinstance(jo, str) and orderno in jo:
-                        try:
-                            arr = json.loads(jo)
-                        except Exception:  # noqa: BLE001
-                            arr = None
-                        if isinstance(arr, list) and orderno in arr:
-                            total += c
-                return total
-
-            for orderno, cav in cav_by_order.items():
-                produced = _cycles_for(orderno) * cav
-                good = max(0, produced - rej_by_order.get(orderno, 0))
-                result[(press, orderno)] = good
-        except Exception as e:  # noqa: BLE001 — degrade this press to no notYetSent
-            logger.warning("good-parts derivation failed for press %s: %s", press, e)
+    for (press, orderno), cav in cav_by.items():
+        if (press, orderno) not in pairs:   # keep emitted keys identical to the input pairs
             continue
+        produced = _cycles_for(press, orderno) * cav
+        result[(press, orderno)] = max(0, produced - rej_by.get((press, orderno), 0))
     return result
 
 
@@ -460,7 +468,9 @@ def reasons() -> dict[str, Any]:
     """Active reject reasons — same query as fastpress ``get_reject_reasons``.
     Global (not press-scoped). Read-only."""
     try:
-        rows = run_select_query(
+        # Reference data (admin-edited); served from cache.
+        rows = cached_select(
+            "trj:reject_reasons",
             "SELECT id, reason_de, reason_en FROM settings.reject_reasons "
             "WHERE active = 1 ORDER BY id",
             {},

dist/index.html

@@ -9,8 +9,8 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>Ausschuss-Station</title>
-    <script type="module" crossorigin src="/module/temper_rejects/assets/index-DceU8_gJ.js"></script>
-    <link rel="stylesheet" crossorigin href="/module/temper_rejects/assets/index-Oxhdj_dg.css">
+    <script type="module" crossorigin src="/module/temper_rejects/assets/index-CjCewD1P.js"></script>
+    <link rel="stylesheet" crossorigin href="/module/temper_rejects/assets/index-CU7fLO-K.css">
   </head>
   <body>
     <div id="app"></div>

src/components/StationHeader.vue

@@ -3,7 +3,7 @@ import { onMounted, onUnmounted, ref } from 'vue'
 import { useI18n } from 'vue-i18n'
 import type { WindowCode } from '@/types/station'
 
-defineProps<{ window: WindowCode; sample: boolean }>()
+defineProps<{ window: WindowCode; sample: boolean; disconnected?: boolean }>()
 const emit = defineEmits<{ (e: 'update:window', code: WindowCode): void }>()
 
 const { t } = useI18n()
@@ -32,7 +32,8 @@ onUnmounted(() => {
     </span>
     <span v-if="sample" class="demo">{{ t('app.demo') }}</span>
     <span class="spacer"></span>
-    <span class="live"><span class="led"></span>{{ t('app.live') }}</span>
+    <span v-if="disconnected" class="reconnect"><span class="spinner sm" aria-hidden="true"></span>{{ t('conn.reconnecting') }}</span>
+    <span v-else class="live"><span class="led"></span>{{ t('app.live') }}</span>
     <span class="clock num">{{ clock }}</span>
     <span class="rangep" role="group" :aria-label="t('window.label')">
       <span class="rl">{{ t('window.label') }}</span>
@@ -117,6 +118,16 @@ onUnmounted(() => {
   background: var(--done);
   animation: blink 2.4s ease-in-out infinite;
 }
+.reconnect {
+  display: flex;
+  align-items: center;
+  gap: 7px;
+  font-family: var(--mono);
+  font-size: 0.68rem;
+  letter-spacing: 0.12em;
+  text-transform: uppercase;
+  color: var(--transit);
+}
 .clock {
   font-size: 0.95rem;
   color: var(--ink-dim);

src/i18n/de.ts

@@ -6,6 +6,11 @@ export default {
     live: 'Live',
     demo: 'Demo-Daten',
   },
+  conn: {
+    connecting: 'Verbinde mit Server …',
+    lost: 'Verbindung verloren – neuer Versuch …',
+    reconnecting: 'Verbinde neu …',
+  },
   filter: {
     title: 'Maschinen',
     all: 'Alle',

src/i18n/en.ts

@@ -7,6 +7,11 @@ export default {
     live: 'Live',
     demo: 'Sample data',
   },
+  conn: {
+    connecting: 'Connecting to server …',
+    lost: 'Connection lost – retrying …',
+    reconnecting: 'Reconnecting …',
+  },
   filter: {
     title: 'Presses',
     all: 'All',

src/stores/temperRejects.ts

@@ -6,7 +6,12 @@ import { sampleStation, SAMPLE_REASONS } from '@/data/sample'
 import type { StationPayload, Reason, RejectRequest, RejectResult, WindowCode } from '@/types/station'
 
 // Same convention as PressV: loadCache() → hydrate() → refresh() → startPolling().
-// Falls back to bundled sample data when the API is unreachable (dev / no gateway).
+//
+// Connection loss on this LIVE terminal: never fabricate carts. A failed fetch keeps
+// the last known REAL payload (stale > fake — an operator must never book against a
+// demo cart) and flips `disconnected`, so the UI shows a reconnect spinner and polling
+// retries faster. Bundled sample data renders ONLY under `npm run dev` (no gateway) —
+// gated behind `import.meta.env.DEV`, so `vite build` strips it from production.
 
 const CACHE_KEY = 'temper_rejects_payload'
 
@@ -18,9 +23,12 @@ export const useTemperRejectsStore = defineStore('temperRejects', () => {
   const loading = ref(false)
   const error = ref<string | null>(null)
   const usingSample = ref(false)
+  const disconnected = ref(false)
   const lastUpdated = ref<number | null>(null)
 
-  let timer: ReturnType<typeof setInterval> | null = null
+  let timer: ReturnType<typeof setTimeout> | null = null
+  let pollMs = 20000
+  const RETRY_MS = 5000 // faster cadence while disconnected, to recover quickly
   let filterInitialized = false
 
   const hasData = computed(() => payload.value !== null)
@@ -76,13 +84,16 @@ export const useTemperRejectsStore = defineStore('temperRejects', () => {
       }
       payload.value = res.data
       usingSample.value = res.data.sample === true
+      disconnected.value = false
     } catch (e) {
+      // Connection lost. Keep the last known REAL data (stale > fabricated): never
+      // replace live carts with demo carts on a live terminal, or an operator could
+      // book against a fabricated entry. Flag `disconnected` so the UI shows a
+      // reconnect spinner (cold start) or a header indicator (stale data) and retries.
+      disconnected.value = true
       error.value = e instanceof Error ? e.message : 'Overview API unreachable'
-      // Keep the last known REAL data on a transient failure (stale > fabricated): never
-      // replace live carts with bundled demo carts on a live terminal, or an operator
-      // could book against a fabricated entry. Only fall back to sample on a COLD start
-      // with nothing to show (dev standalone, where there is no gateway).
-      if (!payload.value || usingSample.value) {
+      // Sample data is for `npm run dev` only (no gateway) — `vite build` strips this.
+      if (import.meta.env.DEV && (!payload.value || usingSample.value)) {
         payload.value = sampleStation(window.value)
         usingSample.value = true
       }
@@ -102,9 +113,15 @@ export const useTemperRejectsStore = defineStore('temperRejects', () => {
   async function fetchReasons() {
     try {
       const res = await api.get<{ reasons: Reason[] }>('/reasons')
-      reasons.value = Array.isArray(res.data?.reasons) ? res.data.reasons : SAMPLE_REASONS
+      if (Array.isArray(res.data?.reasons) && res.data.reasons.length) {
+        reasons.value = res.data.reasons
+        return
+      }
+      throw new Error('no reasons')
     } catch {
-      reasons.value = SAMPLE_REASONS
+      // Keep any reasons already loaded; only seed the bundled sample reasons under
+      // `npm run dev` — production must never offer fabricated reason codes.
+      if (import.meta.env.DEV && !reasons.value.length) reasons.value = SAMPLE_REASONS
     }
   }
 
@@ -152,13 +169,22 @@ export const useTemperRejectsStore = defineStore('temperRejects', () => {
     }
   }
 
+  // Self-scheduling poll: next tick is the normal cadence when connected, a faster
+  // retry while disconnected so the terminal recovers as soon as the gateway is back.
+  function scheduleNext() {
+    timer = setTimeout(async () => {
+      await refresh()
+      scheduleNext()
+    }, disconnected.value ? RETRY_MS : pollMs)
+  }
   function startPolling(ms = 20000) {
     if (timer) return
-    timer = setInterval(refresh, ms)
+    pollMs = ms
+    scheduleNext()
   }
   function stopPolling() {
     if (timer) {
-      clearInterval(timer)
+      clearTimeout(timer)
       timer = null
     }
   }
@@ -173,6 +199,7 @@ export const useTemperRejectsStore = defineStore('temperRejects', () => {
     loading,
     error,
     usingSample,
+    disconnected,
     lastUpdated,
     hasData,
     allPresses,

src/style.css

@@ -114,6 +114,27 @@ html:not(.dark) body {
     background-position: 11px 0;
   }
 }
+@keyframes spin {
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+/* Reconnect spinner (connection-loss states). `.sm` is the inline header variant. */
+.spinner {
+  display: inline-block;
+  width: 30px;
+  height: 30px;
+  border: 3px solid var(--line-2);
+  border-top-color: var(--transit);
+  border-radius: 50%;
+  animation: spin 0.8s linear infinite;
+}
+.spinner.sm {
+  width: 13px;
+  height: 13px;
+  border-width: 2px;
+}
 
 @media (prefers-reduced-motion: reduce) {
   * {

src/views/RejectStationPage.vue

@@ -5,8 +5,10 @@
   5-station temper belt and an "Ausschuss buchen" action → booking popover
   (a tooltip-style panel anchored to the button, not a centered modal).
 
-  Login-free by design. Data from the store (polled); no-backend falls back to
-  bundled sample data so `npm run dev` renders + the booking flow is demoable.
+  Login-free by design. Data from the store (polled). On connection loss the terminal
+  keeps the last real carts (or shows a reconnect spinner on a cold start) and retries
+  — it never shows demo carts in production. Sample data renders only under
+  `npm run dev` (no gateway), where the booking flow is demoable.
 -->
 <script setup lang="ts">
 import { onMounted, onUnmounted, ref } from 'vue'
@@ -21,7 +23,7 @@ import type { RejectEntry, RejectRequest } from '@/types/station'
 
 const { t } = useI18n()
 const store = useTemperRejectsStore()
-const { window, reasons, allPresses, checkedPresses, pressCounts, filteredEntries, usingSample } = storeToRefs(store)
+const { window, reasons, allPresses, checkedPresses, pressCounts, filteredEntries, usingSample, hasData, disconnected } = storeToRefs(store)
 
 const pop = ref<InstanceType<typeof RejectPopover> | null>(null)
 const bookingEntry = ref<RejectEntry | null>(null)
@@ -80,9 +82,15 @@ onUnmounted(() => {
 
 <template>
   <div class="wrap">
-    <StationHeader :window="window" :sample="usingSample" @update:window="store.setWindow" />
+    <StationHeader :window="window" :sample="usingSample" :disconnected="disconnected" @update:window="store.setWindow" />
 
-    <div class="layout">
+    <!-- Cold start / no data yet: never blank, never fake — spinner that keeps retrying. -->
+    <div v-if="!hasData" class="state connect">
+      <span class="spinner" aria-hidden="true"></span>
+      <span class="msg">{{ disconnected ? t('conn.lost') : t('conn.connecting') }}</span>
+    </div>
+
+    <div v-else class="layout">
       <PressFilter
         :presses="allPresses"
         :checked="checkedPresses"
@@ -140,6 +148,18 @@ onUnmounted(() => {
   border: 1px dashed var(--line-2);
   border-radius: var(--r);
 }
+/* Connection spinner state (cold start / reconnecting): full-width, no dashed box. */
+.state.connect {
+  flex-direction: column;
+  gap: 16px;
+  min-height: 60vh;
+  margin-top: 14px;
+  border: 0;
+}
+.state.connect .msg {
+  font-size: 0.85rem;
+  letter-spacing: 0.04em;
+}
 .toast {
   position: fixed;
   left: 50%;