Merge remote-tracking branch 'origin/master' into gitea/feature/end

Resolved conflicts taking origin/master (v0.5.55) as canonical, with local
features re-applied:
- runtime log level (LOG_LEVEL env + dashboard Settings → Logging, applied
  immediately and persisted across restarts)
- free/noAuth provider enable/disable toggle via providerStrategies.enabled
- parallel model testing (Test All Models / Test Selected Keys)

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

@@ -75,6 +75,15 @@ export function kiroToClaudeResponse(chunk, state) {
         ? data.usage.completion_tokens
         : 0;
     state.usage = { input_tokens: promptTokens, output_tokens: outputTokens };
+    // Claude clients read cache_read/cache_creation to price a turn and to size
+    // their prompt cache. Both spellings are accepted because the Kiro executor
+    // emits the Chat shape and passthrough responses use the nested details form.
+    const cacheRead = data.usage.cache_read_input_tokens
+      ?? data.usage.prompt_tokens_details?.cached_tokens;
+    const cacheCreation = data.usage.cache_creation_input_tokens
+      ?? data.usage.prompt_tokens_details?.cache_creation_tokens;
+    if (typeof cacheRead === "number") state.usage.cache_read_input_tokens = cacheRead;
+    if (typeof cacheCreation === "number") state.usage.cache_creation_input_tokens = cacheCreation;
   }
 
   // First chunk → emit message_start.
@@ -254,6 +263,13 @@ export function kiroToClaudeNonStreaming(data) {
     usage: {
       input_tokens: usage.prompt_tokens || 0,
       output_tokens: usage.completion_tokens || 0,
+      // Same cache preservation as the streaming path above.
+      ...(typeof (usage.cache_read_input_tokens ?? usage.prompt_tokens_details?.cached_tokens) === "number"
+        ? { cache_read_input_tokens: usage.cache_read_input_tokens ?? usage.prompt_tokens_details.cached_tokens }
+        : {}),
+      ...(typeof (usage.cache_creation_input_tokens ?? usage.prompt_tokens_details?.cache_creation_tokens) === "number"
+        ? { cache_creation_input_tokens: usage.cache_creation_input_tokens ?? usage.prompt_tokens_details.cache_creation_tokens }
+        : {}),
     },
   };
 }