Merge remote-tracking branch 'origin/master' into gitea/new_feature

# Conflicts:
#	open-sse/handlers/chatCore.js
#	open-sse/services/combo.js
#	src/app/(dashboard)/dashboard/profile/page.js
#	src/app/api/v1/models/route.js
#	src/lib/db/repos/settingsRepo.js

open-sse/translator/request/claude-to-kiro.js

@@ -287,6 +287,18 @@ export function claudeToKiroRequest(model, body, stream, credentials) {
     toolSpecs,
     nameMap,
   });
+  // canonicalizeKiroConversation() already ran its second-chance repair (flatten
+  // every structured tool turn to text, then re-validate). A body that is STILL
+  // invalid here cannot be made shippable, and Kiro answers it with
+  // 400 {"message":"Improperly formed request.","reason":"REQUEST_BODY_INVALID"}.
+  // Fail locally instead: chatCore turns a falsy return into a 400 without
+  // spending an upstream call or a per-account cooldown. The taxonomy
+  // (role:N | pair:N | id:N | spec:N | orphan:0 | current) names the offending
+  // turn so the shape can be diagnosed from the log alone.
+  if (!canonical.valid) {
+    console.error(`[Kiro] refusing invalid conversation (claude → kiro): ${(canonical.errors || []).join(", ") || "unknown"} | turns=${(canonical.history || []).length + 1}`);
+    return null;
+  }
   const replayCurrent = canonical.currentMessage.userInputMessage;
   const userInputMessage = {
     content: replayCurrent.content || "",

open-sse/translator/request/openai-responses.js

@@ -421,6 +421,7 @@ export function openaiToOpenAIResponsesRequest(model, body, stream, credentials)
   if (body.reasoning !== undefined) result.reasoning = body.reasoning;
   if (body.reasoning_effort !== undefined) result.reasoning = { effort: body.reasoning_effort, summary: "auto" };
   if (body.service_tier !== undefined) result.service_tier = body.service_tier;
+  if (body.prompt_cache_key !== undefined) result.prompt_cache_key = body.prompt_cache_key;
 
   return result;
 }

open-sse/translator/request/openai-to-kiro.js

@@ -379,6 +379,18 @@ export function openaiToKiroRequest(model, body, stream, credentials) {
     toolSpecs,
     nameMap,
   });
+  // canonicalizeKiroConversation() already ran its second-chance repair (flatten
+  // every structured tool turn to text, then re-validate). A body that is STILL
+  // invalid here cannot be made shippable, and Kiro answers it with
+  // 400 {"message":"Improperly formed request.","reason":"REQUEST_BODY_INVALID"}.
+  // Fail locally instead: chatCore turns a falsy return into a 400 without
+  // spending an upstream call or a per-account cooldown. The taxonomy
+  // (role:N | pair:N | id:N | spec:N | orphan:0 | current) names the offending
+  // turn so the shape can be diagnosed from the log alone.
+  if (!canonical.valid) {
+    console.error(`[Kiro] refusing invalid conversation (openai → kiro): ${(canonical.errors || []).join(", ") || "unknown"} | turns=${(canonical.history || []).length + 1}`);
+    return null;
+  }
   const replayCurrent = canonical.currentMessage.userInputMessage;
 
   const payload = {