Merge main into refactor/central-prices

Brings in #224 (orbit counts only official stakes) and #225 (lock step),
which landed after this branch was cut. Two conflicts, both composed
rather than picked:

- `services/stake-graph.ts`: kept #224's `etherscanClaimReceiver` filter
  verbatim, with this branch's `morBackersByRider(ethUsd: UsdPrice)`
  signature so the receiver check runs against the centralized price
  service.
- `components/stake/StakeDialog.tsx`: kept #225's `claimLockEnd` /
  `LOCK_OPTIONS` lock step and its new import, plus this branch's switch
  from a private `["eth-price"]` query to the shared `useEthPrice` hook.
  Git had placed the `if (!rider?.vault)` guard inside the HEAD side of
  the hunk, so taking theirs wholesale would have silently dropped it —
  reconstructed explicitly from main and re-verified.

Verified at runtime: the Morpheus option still advances to "Next: lock",
its USD figures resolve through the centralized price, and the stake
graph returns with its stETH row intact.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: r4topunk

messages/en/stake.json

@@ -139,6 +139,22 @@
     "lineStable": "Steady wins. {you} {asset} a year back to you — I'll take my cut in grip tape.",
     "lineVar": "~{rate}% APR is a big air. Could land clean, could slam. You in?"
   },
+  "lock": {
+    "step": "Step 2 · boost (optional)",
+    "title": "Lock your MOR claim to earn more",
+    "explain": "Your stETH stays liquid — withdraw after the 7-day window, whenever you want. You only defer WHEN you can claim the MOR you earn; in exchange your reward multiplier goes up.",
+    "continue": "Next: lock →",
+    "none": "No lock",
+    "noneNote": "Claim your MOR anytime",
+    "years": "{n, plural, one {# year} other {# years}}",
+    "mult": "{mult}× more MOR",
+    "oneway": "A lock can only be extended later, never shortened.",
+    "back": "Back",
+    "summaryTitle": "What you're choosing",
+    "summaryNone": "No lock — base rate, and you can claim your MOR whenever you like.",
+    "summaryLocked": "Locking {label} → {mult}× the MOR share, in exchange for not claiming it until then.",
+    "stethNote": "Either way your stETH principal is never locked by this — only the 7-day withdraw rule applies."
+  },
   "lootbox": {
     "title": "Rewards ready",
     "claim": "Claim",

messages/pt-br/stake.json

@@ -139,6 +139,22 @@
     "lineStable": "Devagar e sempre. {you} {asset} por ano de volta pra você — meu corte eu pego em fita.",
     "lineVar": "~{rate}% APR é um baita air. Pode cair limpo ou levar tombo. Tá dentro?"
   },
+  "lock": {
+    "step": "Passo 2 · turbinar (opcional)",
+    "title": "Trave o claim do MOR pra render mais",
+    "explain": "Seu stETH continua líquido — saca depois dos 7 dias, quando quiser. Você só adia QUANDO pode sacar o MOR que acumula; em troca, seu multiplicador de recompensa sobe.",
+    "continue": "Próximo: lock →",
+    "none": "Sem lock",
+    "noneNote": "Saca seu MOR quando quiser",
+    "years": "{n, plural, one {# ano} other {# anos}}",
+    "mult": "{mult}× mais MOR",
+    "oneway": "O lock só pode ser estendido depois, nunca encurtado.",
+    "back": "Voltar",
+    "summaryTitle": "O que você está escolhendo",
+    "summaryNone": "Sem lock — taxa base, e você saca seu MOR quando quiser.",
+    "summaryLocked": "Travar {label} → {mult}× a fatia de MOR, em troca de não poder sacar até lá.",
+    "stethNote": "De qualquer forma seu stETH nunca fica preso por isso — vale só a regra de saque de 7 dias."
+  },
   "lootbox": {
     "title": "Recompensas prontas",
     "claim": "Sacar",