Merge origin/master (v0.5.81) into gitea/new_feature

Resolve conflicts:
- streamingHandler.js: merge buildStreamErrorBytes onAbortTerminal + local shouldPersistRequestDetail & streamStatusForContent
- capabilities.js: preserve server-injected user-asserted caps and models.dev catalog lookup; wire CommandCode /alpha/generate caps inside resolve()
- commandcode.js (services/usage): adopt upstream whoami + billing credits/subscriptions with 5h/weekly rate windows and plan caps
- openai-to-commandcode.js: merge toNativeImageBlock (data-URI & http(s) support) and assistant reasoning_content preservation
- commandcode-to-openai.js: adopt upstream mid-stream error throw for clean retry and abortion
- tests: sync commandcode test suite and exclude .next from vitest config

open-sse/config/appConstants.js

@@ -178,6 +178,11 @@ export const CLAUDE_SYSTEM_PROMPT = "You are Claude Code, Anthropic's official C
 // makes the backend flag the request and answer 429 Quota Exhausted.
 export const ANTIGRAVITY_PROMPT_REWRITES = [
   { from: "You are a Claude agent, built on Anthropic's Claude Agent SDK.", to: "" },
+  { from: /You are Hermes Agent,\s*(an intelligent AI assistant)(?: created by Nous Research)?\./gi, to: "You are Hermes Agent. You are $1." },
+  // Claude Code prepends this line to its system prompt. The Claude-format translator strips it,
+  // but OpenAI-format clients (e.g. proxies that convert Claude Code to /v1/chat/completions)
+  // pass it through, and any system text containing it gets a fake 429 RESOURCE_EXHAUSTED.
+  { from: /^x-anthropic-billing-header:[^\n]*(?:\r?\n)*/gim, to: "" },
   { from: /opencode/gi, to: (m) => (m === "OpenCode" ? "Antigravity" : m === "OPENCODE" ? "ANTIGRAVITY" : "antigravity") }
 ];
 

open-sse/config/providerModels.js

@@ -27,11 +27,14 @@ const DOT_VERSION_PROVIDERS = new Set(["kr", "kiro"]);
 // ("claude-sonnet-4-5" ~= "claude-sonnet-4.5"). Other providers use exact match only.
 function findModel(models, modelId, aliasOrId) {
   if (!models) return undefined;
-  const found = models.find(m => m.id === modelId);
+  const baseModelId = typeof modelId === "string"
+    ? modelId.replace(/\([^()]+\)\s*$/, "").trim()
+    : modelId;
+  const found = models.find(m => m.id === modelId || m.id === baseModelId);
   if (found) return found;
   if (!DOT_VERSION_PROVIDERS.has(aliasOrId)) return undefined;
-  const normalized = normalizeModelId(modelId);
-  if (normalized === modelId) return undefined;
+  const normalized = normalizeModelId(baseModelId);
+  if (normalized === baseModelId) return undefined;
   return models.find(m => m.id === normalized);
 }