feat: add Venice AI provider integration

Venice AI is a privacy-focused AI inference provider with support for
uncensored models and access to major proprietary models via their
anonymized proxy.

This integration adds:

- Complete model catalog with 25 models:
  - 15 private models (Llama, Qwen, DeepSeek, Venice Uncensored, etc.)
  - 10 anonymized models (Claude, GPT-5.2, Gemini, Grok, Kimi, MiniMax)
- Auto-discovery from Venice API with fallback to static catalog
- VENICE_API_KEY environment variable support
- Interactive onboarding via 'venice-api-key' auth choice
- Model selection prompt showing all available Venice models
- Provider auto-registration when API key is detected
- Comprehensive documentation covering:
  - Privacy modes (private vs anonymized)
  - All 25 models with context windows and features
  - Streaming, function calling, and vision support
  - Model selection recommendations

Privacy modes:
- Private: Fully private, no logging (open-source models)
- Anonymized: Proxied through Venice (proprietary models)

Default model: venice/llama-3.3-70b (good balance of capability + privacy)
Venice API: https://api.venice.ai/api/v1 (OpenAI-compatible)

src/commands/onboard-auth.config-core.ts

@@ -4,6 +4,12 @@ import {
   SYNTHETIC_DEFAULT_MODEL_REF,
   SYNTHETIC_MODEL_CATALOG,
 } from "../agents/synthetic-models.js";
+import {
+  buildVeniceModelDefinition,
+  VENICE_BASE_URL,
+  VENICE_DEFAULT_MODEL_REF,
+  VENICE_MODEL_CATALOG,
+} from "../agents/venice-models.js";
 import type { ClawdbotConfig } from "../config/config.js";
 import {
   OPENROUTER_DEFAULT_MODEL_REF,
@@ -330,6 +336,83 @@ export function applySyntheticConfig(cfg: ClawdbotConfig): ClawdbotConfig {
   };
 }
 
+/**
+ * Apply Venice provider configuration without changing the default model.
+ * Registers Venice models and sets up the provider, but preserves existing model selection.
+ */
+export function applyVeniceProviderConfig(cfg: ClawdbotConfig): ClawdbotConfig {
+  const models = { ...cfg.agents?.defaults?.models };
+  models[VENICE_DEFAULT_MODEL_REF] = {
+    ...models[VENICE_DEFAULT_MODEL_REF],
+    alias: models[VENICE_DEFAULT_MODEL_REF]?.alias ?? "Llama 3.3 70B",
+  };
+
+  const providers = { ...cfg.models?.providers };
+  const existingProvider = providers.venice;
+  const existingModels = Array.isArray(existingProvider?.models) ? existingProvider.models : [];
+  const veniceModels = VENICE_MODEL_CATALOG.map(buildVeniceModelDefinition);
+  const mergedModels = [
+    ...existingModels,
+    ...veniceModels.filter(
+      (model) => !existingModels.some((existing) => existing.id === model.id),
+    ),
+  ];
+  const { apiKey: existingApiKey, ...existingProviderRest } = (existingProvider ?? {}) as Record<
+    string,
+    unknown
+  > as { apiKey?: string };
+  const resolvedApiKey = typeof existingApiKey === "string" ? existingApiKey : undefined;
+  const normalizedApiKey = resolvedApiKey?.trim();
+  providers.venice = {
+    ...existingProviderRest,
+    baseUrl: VENICE_BASE_URL,
+    api: "openai-completions",
+    ...(normalizedApiKey ? { apiKey: normalizedApiKey } : {}),
+    models: mergedModels.length > 0 ? mergedModels : veniceModels,
+  };
+
+  return {
+    ...cfg,
+    agents: {
+      ...cfg.agents,
+      defaults: {
+        ...cfg.agents?.defaults,
+        models,
+      },
+    },
+    models: {
+      mode: cfg.models?.mode ?? "merge",
+      providers,
+    },
+  };
+}
+
+/**
+ * Apply Venice provider configuration AND set Venice as the default model.
+ * Use this when Venice is the primary provider choice during onboarding.
+ */
+export function applyVeniceConfig(cfg: ClawdbotConfig): ClawdbotConfig {
+  const next = applyVeniceProviderConfig(cfg);
+  const existingModel = next.agents?.defaults?.model;
+  return {
+    ...next,
+    agents: {
+      ...next.agents,
+      defaults: {
+        ...next.agents?.defaults,
+        model: {
+          ...(existingModel && "fallbacks" in (existingModel as Record<string, unknown>)
+            ? {
+                fallbacks: (existingModel as { fallbacks?: string[] }).fallbacks,
+              }
+            : undefined),
+          primary: VENICE_DEFAULT_MODEL_REF,
+        },
+      },
+    },
+  };
+}
+
 export function applyAuthProfileConfig(
   cfg: ClawdbotConfig,
   params: {