check:i18n-keys-exist and check:packet-variants run in gates:pre

i18n-keys-exist is green now that the panel keys and legend.noList exist, so a key named in code
without a catalogue entry can no longer land silently. packet-variants arrived unregistered.

package.json

@@ -192,6 +192,7 @@
     "check:selector-fields": "node internal/check-selector-fields.mjs",
     "check:selector-fields:self-test": "node internal/check-selector-fields.mjs --self-test",
     "check:packet-strings-parity": "node internal/check-packet-strings-parity.mjs",
+    "check:packet-variants": "node internal/check-packet-variants.mjs",
     "check:packets-all": "node internal/check-packets-all.mjs",
     "check:parse": "node internal/inline-parse-check.mjs",
     "check:pinned-umd": "node internal/check-pinned-umd.mjs",
@@ -273,7 +274,7 @@
     "fix:sri": "node internal/fix-sri.mjs",
     "gallery": "node internal/generate-gallery.mjs",
     "gates:post": "node internal/run-parallel.mjs --label=post -- check:capability-derived check:drop check:parse verify check:sri check:public-hygiene check:label-joins check:facet-cascade check:facet-one-field check:heartbeat check:kpi-unit check:composite-reg check:descriptions check:no-abs-paths check:no-codename check:dep-names check:composite-srcs check:embed-targets check:nested-token check:i18n-parity check:tabs-localized check:packets-all check:packet-strings-parity check:zone-census check:zoning-declared check:share-policy check:library-index check:csv-shape check:capability-citations check:catalog-identity check:no-orphan-gates check:quoted-scripts check:done-evidence check:script-flags check:backlog-status check:capability-exemplars check:packet-fixture check:packet-browser check:provider-switch check:locale-reachable check:url-resolver check:manifest-covers check:one-palette check:pin-dim-slider check:legend-source check:backlog-refs check:clustering-modes check:composite-embed-knobs check:composite-locale-leaks check:linked-vocabulary check:wp-embed check:dashboard-geocoder-provider check:leaf-engine-per-provider check:map-props-unit check:composites-mount check:composite-interop check:no-free-identifiers check:map-fly-reduced-motion check:mst-clustering check:list-prop-unit check:profiles-mount check:cdn-pins check:no-eval check:popup-escaping check:i18n-treeshake check:pinned-umd check:one-palette:self-test check:no-cross-plugin-imports check:no-cross-plugin-imports:self-test check:map-attribution check:studio-rail check:approx-pin-note check:embedder-keys check:provider-for check:legend-logical-insets check:legend-logical-insets:self-test check:optional-t-equivalence check:text-highlight check:religion-label-not-value check:i18n-stopped-scope check:no-silent-engine check:regions-uses-library check:shadow-css-parses check:square-map-controls check:preset-config-merge check:frozen-labels",
-    "gates:pre": "node internal/run-parallel.mjs --label=pre -- check:template-literal check:mjs-parse check:sfc-parse check:tab-radius check:synced-css check:doc-scripts check:setup-order check:package-json-unique-keys check:no-repo-pb-hooks check:no-credentials-omit check:no-credentials-omit:self-test check:shadow-reduced-motion check:poster-action-print check:targets check:targets:self-test check:browser-gates-guarded check:pin-selection check:facet-shape check:hardcoded-english:self-test check:list-selection check:selector-fields check:upg-zone-joins check:gospel-set-charts check:describe-group check:one-scroll-container check:packet-charts check:composite-token-url check:language-tree-layout",
+    "gates:pre": "node internal/run-parallel.mjs --label=pre -- check:template-literal check:mjs-parse check:sfc-parse check:tab-radius check:synced-css check:doc-scripts check:setup-order check:package-json-unique-keys check:no-repo-pb-hooks check:no-credentials-omit check:no-credentials-omit:self-test check:shadow-reduced-motion check:poster-action-print check:targets check:targets:self-test check:browser-gates-guarded check:pin-selection check:facet-shape check:hardcoded-english:self-test check:list-selection check:selector-fields check:upg-zone-joins check:gospel-set-charts check:describe-group check:one-scroll-container check:packet-charts check:composite-token-url check:language-tree-layout check:i18n-keys-exist check:packet-variants",
     "gen:iso3-to-alpha2": "node library/scripts/generate-iso3-to-alpha2.mjs",
     "internet:adm1": "node plugin-designs/cities-internet/scripts/build-adm1-internet.mjs",
     "library-index": "node internal/generate-library-index.mjs",
@@ -434,6 +435,7 @@
     "check:packet-fixture": "the committed fixture must still match clusters.json and must never carry image_url (CI would fetch 43 photos from someone else's CDN).",
     "check:packet-render:expect-funnel": "check:packet-render with the page-2 FUNNEL declared REQUIRED. Exists because of a real near-miss: a merge resolved with `git checkout --ours` deleted the printPacket call site that supplies the funnel data (60 lines) and EVERY GATE STAYED GREEN — it had to, because the funnel page is OPTIONAL by design (buildPacket omits it when the arg is null), so a packet without page 2 is not malformed, just smaller. Always requiring it would be the wrong fix: the 11 pre-funnel laos packets and any host with no funnel data would go red, and a false red costs as much as a false green. So the CALLER, which knows whether this packet was built with funnel data, declares it — an absence is then either declared (no flag) or a failure (flag passed, page missing), never a silent nothing. Pass it for any packet from a profile that wires packetFunnel(). Browser gate.",
     "check:packet-strings-parity": "the PACKET catalog (packet-strings.json) must be whole in every language: all string keys, all 12 prayer points with every field, all 12 wheel rhythms. check:i18n-parity covers library/i18n/locales only — six gates READ this file and none checked it. Asserts PRESENCE, not translatedness, with point4_passage declared-absent on record.",
+    "check:packet-variants": "the poster wall's Prayer List prints the PACKET (not the columnar list), and every variant it offers exists in packet-render's VARIANTS. A variant may drop fixed pages but never people: lightweight keeps every group. By the UPG-100 owner; mutation-tested. Headless; in gates:pre.",
     "check:packets-all": "runs check:packet-render over EVERY generated packet, not one hand-named file. The single-file gate SKIPs with no argument, so it was in package.json, passing in all 11 locales, and in neither gates:pre nor gates:post — it only ran when someone typed a filename. SKIPs when no packets are generated.",
     "check:pin-dim-slider": "the side menu's pin-dim slider and the legend's dimming must COMPOSE, not compete. Both want the pin layer's circle-opacity, so there is ONE writer and the value is the PRODUCT: slider x (1 matched, 0 dimmed). Asserts the LIVE paint property, not the store: flat 1 with clustering off, flat 0.5 with clustering on, ['case', expr, 0.5, 0] once something is dimmed, and ['case', expr, 1, 0] when the slider returns to 1. Dims by RELIGION deliberately - a region selection sets a layer FILTER rather than an opacity expression, so testing that path would report a failure about code that never writes opacity.",
     "check:pinned-umd": "library/utils/loadPinnedUmd.js (d3 for PPLR and the Wall) loads a pinned UMD with SRI and never touches the host page's global of the same name: a host's own d3 gains no keys, a failed load leaves it in place. Headless.",