docs: concept annexation, provider/reference docs, ACT-1 groundwork

Mosaic concepts pages now own the adapted content; source/license
metadata under docs/reference/concepts. Adds ACT-1 agent-context
planning capture, pinned concept test package + preparation utility,
foundation observation notes (durability, evidence, federation,
onboarding, workflow), and the #1495 consolidation assessment.
TOOLS.md updated for the host-dev launcher.

docs/providers/models.md

@@ -0,0 +1,67 @@
+---
+summary: "Model providers (LLMs) supported by OpenClaw"
+read_when:
+  - You want to choose a model provider
+  - You want quick setup examples for LLM auth + model selection
+title: "Model provider quickstart"
+---
+
+Pick a provider, authenticate, then set the default model as `provider/model`.
+
+## Quick start (two steps)
+
+1. Authenticate with the provider (usually via `openclaw onboard`).
+2. Set the default model:
+
+```json5
+{
+  agents: { defaults: { model: { primary: "anthropic/claude-opus-4-6" } } },
+}
+```
+
+## Supported providers (starter set)
+
+- [Alibaba Model Studio](/providers/alibaba)
+- [Amazon Bedrock](/providers/bedrock)
+- [Anthropic (API + Claude CLI)](/providers/anthropic)
+- [Baseten (Inkling + Model APIs)](/providers/baseten)
+- [BytePlus (International)](/concepts/model-providers#byteplus-international)
+- [Chutes](/providers/chutes)
+- [Cloudflare AI Gateway](/providers/cloudflare-ai-gateway)
+- [Cohere](/providers/cohere)
+- [ComfyUI](/providers/comfy)
+- [DeepInfra](/providers/deepinfra)
+- [fal](/providers/fal)
+- [Fireworks](/providers/fireworks)
+- [MiniMax](/providers/minimax)
+- [Mistral](/providers/mistral)
+- [Moonshot AI (Kimi + Kimi Coding)](/providers/moonshot)
+- [NovitaAI](/providers/novita)
+- [OpenAI (API + Codex)](/providers/openai)
+- [OpenCode (Zen + Go)](/providers/opencode)
+- [OpenRouter](/providers/openrouter)
+- [Qianfan](/providers/qianfan)
+- [Qwen](/providers/qwen)
+- [Runway](/providers/runway)
+- [StepFun](/providers/stepfun)
+- [Synthetic](/providers/synthetic)
+- [Venice (Venice AI)](/providers/venice)
+- [Vercel AI Gateway](/providers/vercel-ai-gateway)
+- [xAI](/providers/xai)
+- [Z.AI (GLM)](/providers/zai)
+
+For the full provider catalog and advanced configuration, see
+[Provider directory](/providers/index) and [Model providers](/concepts/model-providers).
+
+## Additional provider variants
+
+- `anthropic-vertex` - install `@openclaw/anthropic-vertex-provider` for implicit Anthropic on Google Vertex support when Vertex credentials are available; no separate onboarding auth choice
+- `copilot-proxy` - local VS Code Copilot Proxy bridge; use `openclaw onboard --auth-choice copilot-proxy`
+- `google-gemini-cli` - optional explicit runtime for canonical `google/*` models; requires a local `gemini` install and a supported Google AI Studio API-key profile; new Gemini CLI or Antigravity OAuth setup is not offered
+
+## Related
+
+- [Provider directory](/providers/index)
+- [Model selection](/concepts/model-providers)
+- [Model failover](/concepts/model-failover)
+- [Models CLI](/cli/models)