feat(llm-sdk): add reasoning/thinking support via OpenAI Responses API + OpenRouter passthrough

.husky/pre-commit

@@ -4,12 +4,12 @@
 #
 
 # Add homebrew to PATH for non-interactive shells
-export PATH="/opt/homebrew/bin:$PATH"
+export PATH="/opt/homebrew/bin:$HOME/.local/bin:$PATH"
 
 echo "🔍 Running Gitleaks to check for secrets..."
 
 # Check if gitleaks is installed
-if ! command -v gitleaks &> /dev/null; then
+if ! command -v gitleaks > /dev/null 2>&1; then
     echo ""
     echo "❌ ERROR: Gitleaks is not installed!"
     echo ""

BETA-RELEASE.md

@@ -0,0 +1,82 @@
+# Beta Release Reel
+
+Five headline features shipping in the Copilot SDK beta.
+
+---
+
+## 1. Skills System
+
+On-demand instruction playbooks the AI loads at runtime. Keep prompts lean — behavior is injected only when relevant.
+
+|         | Path                                       |
+| ------- | ------------------------------------------ |
+| Docs    | `apps/docs/content/docs/skills/index.mdx`  |
+|         | `apps/docs/content/docs/skills/client.mdx` |
+|         | `apps/docs/content/docs/skills/server.mdx` |
+| Example | `examples/skills-demo/`                    |
+
+**Highlights:** Three strategies (eager, auto, manual) — inline + file + URL sources — `defineSkill()` helper — collision detection — `load_skill` tool auto-registered.
+
+---
+
+## 2. Generative UI
+
+AI renders structured UI components — cards, tables, stat tiles, HTML — inline inside the chat. Not just text.
+
+|         | Path                                       |
+| ------- | ------------------------------------------ |
+| Docs    | `apps/docs/content/docs/generative-ui.mdx` |
+| Example | `examples/generative-ui-demo/`             |
+
+**Highlights:** Built-in renderers (Card, Table, Stat, Html) — `useGenerativeUI()` hook — `toolRenderers` map for custom components — iframe sandbox for AI-generated HTML.
+
+---
+
+## 3. Fallback Chain & Routing
+
+Chain multiple LLM providers with automatic failover. One runtime, multiple models, zero downtime.
+
+|         | Path                                            |
+| ------- | ----------------------------------------------- |
+| Docs    | `apps/docs/content/docs/providers/fallback.mdx` |
+| Example | `examples/fallback-demo/`                       |
+
+**Highlights:** Priority + round-robin routing — per-model retry with exponential backoff — `onFallback` / `onRetry` callbacks — pluggable `RoutingStore` for serverless (Redis, KV).
+
+---
+
+## 4. File Attachments
+
+Drag-and-drop file and media attachments in chat. Upload, preview, and forward to the server runtime.
+
+|         | Path                                                                               |
+| ------- | ---------------------------------------------------------------------------------- |
+| Docs    | `apps/docs/content/docs/chat/attachments.mdx`                                      |
+| Example | Used in `examples/skills-demo/` and `examples/ollama-demo/` (no dedicated example) |
+
+**Highlights:** `AttachmentStrip` thumbnail preview — drop-zone overlay — `useAttachments()` for headless access — automatic server forwarding — error handling built-in.
+
+---
+
+## 5. Knowledge Base
+
+Connect external knowledge sources so the AI can search and cite real data in responses.
+
+|         | Path                            |
+| ------- | ------------------------------- |
+| Docs    | Not yet documented              |
+| Example | `examples/knowledge-base-demo/` |
+
+**Highlights:** RAG-powered retrieval — plug into any vector store — cite sources in responses — works with the agentic loop for multi-step research.
+
+---
+
+## Status
+
+| Feature          | Docs | Example | README |          Ready          |
+| ---------------- | :--: | :-----: | :----: | :---------------------: |
+| Skills System    | Yes  |   Yes   |   No   |         Refine          |
+| Generative UI    | Yes  |   Yes   |   No   |         Refine          |
+| Fallback Chain   | Yes  |   Yes   |  Yes   |         Refine          |
+| File Attachments | Yes  | Partial |   No   | Needs dedicated example |
+| Knowledge Base   |  No  | Minimal |   No   |  Needs docs + example   |