feat(keys): paste-your-key field — snippets carry the real key instantly

Next to the copy button: a key input and an «Insert key» button (Enter works
too). The pasted key substitutes into every harness/SDK snippet immediately
and survives tab and OS switches; a freshly created key pre-fills the field.
No more copying a snippet and then hand-editing the placeholder. 2 strings
×7 languages.

web/js/i18n/de.js

@@ -644,4 +644,6 @@ export default {
   "keys.budgetOf": "Budget {b}/Mon.",
   "dash.kpi.orBalance": "OpenRouter-Guthaben",
   "keys.h.install": "Installieren:",
+  "keys.snip.keyInputPh": "API-Schlüssel einfügen",
+  "keys.snip.apply": "Schlüssel einsetzen",
 };

web/js/i18n/en.js

@@ -637,4 +637,6 @@ export default {
   "keys.budgetOf": "budget {b}/mo",
   "dash.kpi.orBalance": "OpenRouter balance",
   "keys.h.install": "Install:",
+  "keys.snip.keyInputPh": "paste your API key",
+  "keys.snip.apply": "Insert key",
 };

web/js/i18n/es.js

@@ -644,4 +644,6 @@ export default {
   "keys.budgetOf": "presupuesto {b}/mes",
   "dash.kpi.orBalance": "Saldo OpenRouter",
   "keys.h.install": "Instalar:",
+  "keys.snip.keyInputPh": "pega tu clave API",
+  "keys.snip.apply": "Insertar clave",
 };

web/js/i18n/fr.js

@@ -644,4 +644,6 @@ export default {
   "keys.budgetOf": "budget {b}/mois",
   "dash.kpi.orBalance": "Solde OpenRouter",
   "keys.h.install": "Installer :",
+  "keys.snip.keyInputPh": "collez votre clé API",
+  "keys.snip.apply": "Insérer la clé",
 };

web/js/i18n/ru.js

@@ -636,4 +636,6 @@ export default {
   "keys.budgetOf": "бюджет {b}/мес",
   "dash.kpi.orBalance": "Баланс OpenRouter",
   "keys.h.install": "Установить:",
+  "keys.snip.keyInputPh": "вставьте ваш API-ключ",
+  "keys.snip.apply": "Вставить ключ",
 };

web/js/i18n/tr.js

@@ -644,4 +644,6 @@ export default {
   "keys.budgetOf": "bütçe {b}/ay",
   "dash.kpi.orBalance": "OpenRouter bakiyesi",
   "keys.h.install": "Kurulum:",
+  "keys.snip.keyInputPh": "API anahtarınızı yapıştırın",
+  "keys.snip.apply": "Anahtarı ekle",
 };

web/js/i18n/zh.js

@@ -644,4 +644,6 @@ export default {
   "keys.budgetOf": "预算 {b}/月",
   "dash.kpi.orBalance": "OpenRouter 余额",
   "keys.h.install": "安装：",
+  "keys.snip.keyInputPh": "粘贴你的 API 密钥",
+  "keys.snip.apply": "插入密钥",
 };

web/js/views/keys.js

@@ -54,7 +54,7 @@ export async function renderKeys() {
   function snippetsCard(openMode) {
     const origin = location.origin;
     const base = origin + "/v1";
-    const key = lastCreatedKey || (openMode ? "sk-anything" : "<" + t("keys.snip.keyPh") + ">");
+    let key = lastCreatedKey || (openMode ? "sk-anything" : "<" + t("keys.snip.keyPh") + ">");
     // Every scripty snippet exists in two OS flavors: bash heredocs for
     // Linux/macOS and PowerShell here-strings for Windows. SDK snippets
     // (python/js) and GUI instructions are OS-independent.
@@ -195,11 +195,15 @@ const resp = await client.chat.completions.create({
 });
 console.log(resp.choices[0].message.content);`,
     };
-    const shSnips = buildSnips("sh");
-    const psSnips = buildSnips("ps");
-    // python/js/Cline одинаковы — дополняем ps-набор из sh
-    for (const k of Object.keys(shSnips)) if (!psSnips[k]) psSnips[k] = shSnips[k];
-    let snips = os === "ps" ? psSnips : shSnips;
+    let shSnips, psSnips, snips;
+    function rebuildSnips() {
+      shSnips = buildSnips("sh");
+      psSnips = buildSnips("ps");
+      // python/js/Cline одинаковы — дополняем ps-набор из sh
+      for (const k of Object.keys(shSnips)) if (!psSnips[k]) psSnips[k] = shSnips[k];
+      snips = os === "ps" ? psSnips : shSnips;
+    }
+    rebuildSnips();
     let cur = "Claude Code";
     const pre = h("pre", { class: "conv-log snippet" }, snips[cur]);
     const seg = h(
@@ -289,12 +293,22 @@ console.log(resp.choices[0].message.content);`,
     osSeg.querySelectorAll("button").forEach((b, i) =>
       b.addEventListener("click", () => {
         os = i === 0 ? "sh" : "ps";
-        snips = os === "ps" ? psSnips : shSnips;
+        rebuildSnips();
         osSeg.querySelectorAll("button").forEach((x, j) => x.classList.toggle("active", j === (os === "sh" ? 0 : 1)));
         pre.textContent = snips[cur];
         paintStatus();
       }));
 
+    // paste-your-key: substitutes the key into every snippet immediately
+    const keyIn = h("input", { class: "mono", placeholder: t("keys.snip.keyInputPh"), style: "max-width:230px; font-size:12px", value: lastCreatedKey || "" });
+    const applyKey = () => {
+      key = keyIn.value.trim() || (openMode ? "sk-anything" : "<" + t("keys.snip.keyPh") + ">");
+      rebuildSnips();
+      pre.textContent = snips[cur];
+    };
+    const applyBtn = h("button", { class: "btn ghost sm", onClick: applyKey }, "⤵ " + t("keys.snip.apply"));
+    keyIn.addEventListener("keydown", (e) => { if (e.key === "Enter") applyKey(); });
+
     const copy = h("button", { class: "btn ghost sm" }, "⧉ " + t("common.copy"));
     copy.addEventListener("click", async () => {
       await navigator.clipboard.writeText(pre.textContent);
@@ -306,7 +320,7 @@ console.log(resp.choices[0].message.content);`,
       h("div", { class: "card-title" }, "🔌 " + t("keys.snip.title")),
       h("div", { class: "muted small", style: "margin-bottom:8px" },
         lastCreatedKey ? t("keys.snip.withKey") : openMode ? t("keys.snip.openMode") : t("keys.snip.hint")),
-      h("div", { class: "flex", style: "gap:8px; margin-bottom:8px; flex-wrap:wrap" }, seg, h("div", { class: "grow" }), osSeg, copy),
+      h("div", { class: "flex", style: "gap:8px; margin-bottom:8px; flex-wrap:wrap" }, seg, h("div", { class: "grow" }), keyIn, applyBtn, osSeg, copy),
       pre,
       statusHost,
       protoWarn,