fix(commandcode): preserve images and reasoning_effort on /alpha/generate

Command Code dropped vision and ignored client effort through the router:
image blocks became "[image omitted]", HTTP image URLs were never inlined,
and reasoning_effort landed on the envelope wrapper instead of params (so the
DeepSeek family mapping remapped low -> high). The catalog also treated
deepseek/deepseek-v4.1-flash as text-only, so the vision adapter stole those
requests to another provider.

- Map OpenAI image_url / Claude image blocks (base64 or data-URI) to the
  native {type:"image", image:"data:...;base64,...", mimeType} generate block.
- Add FORMATS.COMMANDCODE to TARGETS_NEED_BASE64 so remote http(s) images are
  inlined by the existing SSRF-safe fetcher before translation.
- Write reasoning_effort inside params for targetFormat commandcode and pass
  low|medium|high|xhigh|max through unmapped; allow it in thinkingLevels.
- Provider-scoped capabilities for commandcode/cmc: vision except the CLI
  text-only denylist, thinkingFormat commandcode, so family patterns
  (deepseek-v4 -> thinkingFormat deepseek, vision false) no longer win.
- Quota Tracker: whoami + billing credits/subscriptions (credits vs plan cap,
  5h and weekly windows), labels from AI_PROVIDERS[].name.

open-sse/providers/capabilities.js

@@ -467,12 +467,66 @@ function refine(base, provider, model) {
   return result;
 }
 
+// Mirrors Command Code CLI `isKnownTextOnlyModel` (no image input). New models
+// default to vision; only this denylist stays text-only.
+const COMMANDCODE_TEXT_ONLY = new Set([
+  "deepseek/deepseek-v4-pro",
+  "deepseek/deepseek-v4-flash",
+  "deepseek/deepseek-v4-flash-fast",
+  "zai-org/glm-5.3",
+  "zai-org/glm-5.2",
+  "zai-org/glm-5.2-fast",
+  "zai-org/glm-5.1",
+  "zai-org/glm-5",
+  "minimaxai/minimax-m2.7",
+  "minimax/minimax-m2.7-free",
+  "minimaxai/minimax-m2.5",
+  "xiaomi/mimo-v2.5-pro",
+  "qwen/qwen3.6-max-preview",
+  "qwen/qwen3.7-max",
+  "meituan/longcat-2.0:free",
+  "stepfun/step-3.5-flash",
+  "tencent/hy4-preview",
+  "tencent/hy3",
+  "tencent/hy3-paid",
+  "nvidia/nemotron-3-ultra-550b-a55b",
+  "poolside/laguna-s-2.1-free",
+  "inclusionai/ling-3.0-flash-free",
+  "inclusionai/ling-3.0-flash-sante:free",
+]);
+
+function isCommandCodeTextOnly(model) {
+  const key = String(model || "").toLowerCase();
+  if (COMMANDCODE_TEXT_ONLY.has(key)) return true;
+  for (const id of COMMANDCODE_TEXT_ONLY) {
+    const base = id.includes("/") ? id.slice(id.lastIndexOf("/") + 1) : id;
+    if (key === base || key.endsWith("/" + base)) return true;
+  }
+  return false;
+}
 export function getCapabilitiesForModel(provider, model) {
   if (!model) return { ...DEFAULT_CAPABILITIES };
 
   // Canonical exact lookup strips vendor prefix: "anthropic/claude-opus-4.7" -> "claude-opus-4.7".
   const baseModel = model.includes("/") ? model.split("/").pop() : model;
 
+  // CommandCode wire is /alpha/generate for every model. Family patterns
+  // (deepseek-v4 → thinkingFormat:deepseek, vision:false) must not win here.
+  if (provider === "commandcode" || provider === "cmc") {
+    const providerCaps = PROVIDER_CAPABILITIES.commandcode;
+    if (providerCaps?.[model]) return { ...DEFAULT_CAPABILITIES, ...providerCaps[model] };
+    if (providerCaps?.[baseModel]) return { ...DEFAULT_CAPABILITIES, ...providerCaps[baseModel] };
+    return {
+      ...DEFAULT_CAPABILITIES,
+      reasoning: true,
+      thinkingFormat: "commandcode",
+      thinkingEffortSupported: true,
+      vision: !isCommandCodeTextOnly(model),
+      contextWindow: 1000000,
+      maxOutput: 384000,
+    };
+  }
+
   // 1. Provider-specific override
   if (provider) {
     const providerCaps = PROVIDER_CAPABILITIES[provider];

open-sse/providers/registry/commandcode.js

@@ -40,4 +40,8 @@ export default {
     { id: "Qwen/Qwen3.6-Plus", name: "Qwen 3.6 Plus" },
     { id: "stepfun/Step-3.5-Flash", name: "Step 3.5 Flash" },
   ],
+  features: {
+    usage: true,
+    usageApikey: true,
+  },
 };

open-sse/providers/thinkingLevels.js

@@ -26,6 +26,7 @@ const FORMAT_LEVELS = {
   qwen: L.base,
   kimi: L.levelMax,
   deepseek: L.hiMax,
+  commandcode: ["none", "low", "medium", "high", "xhigh", "max"],
   minimax: L.onOff,
   hunyuan: L.base,
   step: L.base,