Use one stable preview URL and document live provider matrix

README.md

@@ -82,6 +82,36 @@
 
 <img src="assets/compare.jpg" alt="PicoClaw" width="512">
 
+## 🔌 Provider Matrix
+
+The stack is provider-agnostic, but a practical low-cost deployment can split work by capability instead of forcing one model to do everything.
+
+### Example deployment matrix (Orange Pi / RISC-V)
+
+| Capability | Provider / API | Model / Path | Notes |
+| ---------- | -------------- | ------------ | ----- |
+| Chat / main conversation | OpenRouter | `openrouter/free` | Default text model path |
+| Text fallback 1 | OpenRouter | `openai/gpt-oss-20b:free` | Free text fallback |
+| Text fallback 2 | DeepSeek API | `deepseek-chat` | Extra text fallback |
+| Text fallback 3 | Gemini API | `gemini-2.5-flash` | Last text fallback |
+| Image understanding | Gemini API | `gemini-2.5-flash` | Used for photo / image turns |
+| Voice transcription | ElevenLabs | `scribe_v1` | First speech-to-text provider |
+| Voice transcription fallback 1 | Gemini API | `gemini-2.5-flash` | Speech understanding fallback |
+| Voice transcription fallback 2 | Groq API | Whisper-compatible STT | Final transcription fallback |
+| Voice reply synthesis | ElevenLabs | TTS API | Primary voice-note output |
+| Voice reply synthesis fallback | Gemini API | `gemini-2.5-flash-preview-tts` | Fallback speech output |
+| Gmail / Calendar / Drive actions | Google Workspace APIs via `gws` CLI | Gmail, Calendar, Drive | Executed as tool calls, not normal chat completions |
+| Telegram transport | Telegram Bot API | Bot token | Messaging channel |
+| WhatsApp transport | WhatsApp native (`whatsmeow`) | local session store | Not Meta Cloud API |
+| Preview hosting | Built-in preview server | `http://<host>:3002/preview/site/` | One stable preview URL can be reused across site updates |
+
+### Why split providers by capability?
+
+- Text chat can stay on cheap or free routing.
+- Image turns can go directly to a vision-capable model.
+- Voice can use STT/TTS providers that are better than a general-purpose chat model.
+- Workspace actions like Gmail or Drive are usually better handled as tool/API calls than as LLM-only reasoning.
+
 ## 🦾 Demonstration
 
 ### 🛠️ Standard Assistant Workflows

pkg/agent/loop.go

@@ -2979,11 +2979,12 @@ func (al *AgentLoop) shouldRecallRecentPreview(lower string, agent *AgentInstanc
 	wantsURL := strings.Contains(lower, "url") || strings.Contains(lower, "urls") || strings.Contains(lower, "link") || strings.Contains(lower, "links")
 	wantsRecent := strings.Contains(lower, "recent") || strings.Contains(lower, "latest") || strings.Contains(lower, "most recent") || strings.Contains(lower, "current")
 	wantsHost := strings.Contains(lower, "host") || strings.Contains(lower, "serve") || strings.Contains(lower, "open")
-	if !wantsURL && !(wantsRecent && wantsHost) {
+	wantsPreview := strings.Contains(lower, "preview") || strings.Contains(lower, "site") || strings.Contains(lower, "website") || strings.Contains(lower, "app") || strings.Contains(lower, "build")
+	wantsStatus := strings.Contains(lower, "status") || strings.Contains(lower, "going") || strings.Contains(lower, "howd") || strings.Contains(lower, "hows") || strings.Contains(lower, "how's")
+	if !wantsPreview {
 		return false
 	}
-	wantsPreview := strings.Contains(lower, "preview") || strings.Contains(lower, "site") || strings.Contains(lower, "website") || strings.Contains(lower, "app") || strings.Contains(lower, "build")
+	if !wantsURL && !(wantsRecent && wantsHost) && !wantsStatus {
-	if !wantsPreview {
 		return false
 	}
 	return len(al.recentPreviewInfos(agent)) > 0
@@ -2996,10 +2997,12 @@ func (al *AgentLoop) shouldRecallRecentPreviewFromConversation(lower string, age
 	wantsURL := strings.Contains(lower, "url") || strings.Contains(lower, "urls") || strings.Contains(lower, "link") || strings.Contains(lower, "links")
 	wantsRecent := strings.Contains(lower, "recent") || strings.Contains(lower, "latest") || strings.Contains(lower, "most recent") || strings.Contains(lower, "current")
 	wantsHost := strings.Contains(lower, "host") || strings.Contains(lower, "serve") || strings.Contains(lower, "open")
-	if !wantsURL && !(wantsRecent && wantsHost) {
+	wantsPreview := strings.Contains(lower, "preview") || strings.Contains(lower, "site") || strings.Contains(lower, "website") || strings.Contains(lower, "app") || strings.Contains(lower, "build")
+	wantsStatus := wantsPreview && (strings.Contains(lower, "status") || strings.Contains(lower, "going") || strings.Contains(lower, "howd") || strings.Contains(lower, "hows") || strings.Contains(lower, "how's"))
+	if !wantsURL && !(wantsRecent && wantsHost) && !wantsStatus {
 		return false
 	}
-	hints := strings.Contains(lower, "talked") || strings.Contains(lower, "previous") || strings.Contains(lower, "built") || strings.Contains(lower, "that site") || strings.Contains(lower, "that website") || wantsRecent
+	hints := strings.Contains(lower, "talked") || strings.Contains(lower, "previous") || strings.Contains(lower, "built") || strings.Contains(lower, "that site") || strings.Contains(lower, "that website") || wantsRecent || wantsStatus
 	if !hints {
 		return false
 	}

pkg/channels/manager.go

@@ -665,7 +665,9 @@ func (m *Manager) PublishPreview(root, entry, slug string) (string, string, stri
 	if existing, ok := m.previews[slug]; ok {
 		createdAt = existing.CreatedAt
 	}
-	m.previews[slug] = previewMount{Root: absRoot, Entry: entry, CreatedAt: createdAt, UpdatedAt: now}
+	m.previews = map[string]previewMount{
+		slug: {Root: absRoot, Entry: entry, CreatedAt: createdAt, UpdatedAt: now},
+	}
 	m.mu.Unlock()
 
 	tailscaleBase, localBase := m.previewBases()

pkg/tools/preview.go

@@ -31,6 +31,7 @@ type HostPreviewTool struct {
 }
 
 const recentPreviewsStatePath = "state/recent_previews.json"
+const defaultHostedPreviewSlug = "site"
 
 func NewHostPreviewTool(workspace string, restrict bool, publish PreviewPublisher) *HostPreviewTool {
 	return &HostPreviewTool{workspace: workspace, restrict: restrict, publish: publish}
@@ -41,7 +42,7 @@ func (t *HostPreviewTool) Name() string {
 }
 
 func (t *HostPreviewTool) Description() string {
-	return "Host a local site/app directory on the built-in preview server and return Tailscale/local URLs for review."
+	return "Host a local site/app directory on the built-in preview server and return one stable Tailscale/local preview URL for review."
 }
 
 func (t *HostPreviewTool) Parameters() map[string]any {
@@ -90,6 +91,9 @@ func (t *HostPreviewTool) Execute(ctx context.Context, args map[string]any) *Too
 	entry = strings.TrimSpace(entry)
 	slug, _ := args["slug"].(string)
 	slug = strings.TrimSpace(slug)
+	if slug == "" {
+		slug = defaultHostedPreviewSlug
+	}
 
 	root := resolved
 	if info.IsDir() {
@@ -106,6 +110,10 @@ func (t *HostPreviewTool) Execute(ctx context.Context, args map[string]any) *Too
 			entry = "index.html"
 		}
 	} else {
+		ext := strings.ToLower(filepath.Ext(resolved))
+		if ext != ".html" && ext != ".htm" {
+			return ErrorResult("path must be a site directory or an HTML entry file")
+		}
 		root = filepath.Dir(resolved)
 		if entry == "" {
 			entry = filepath.Base(resolved)
@@ -172,21 +180,7 @@ func SaveRecentPreview(workspace string, preview *HostedPreview) error {
 	if err := os.MkdirAll(filepath.Dir(path), 0o755); err != nil {
 		return err
 	}
-	previews, err := LoadRecentPreviews(workspace)
+	updated := []HostedPreview{*preview}
-	if err != nil {
-		return err
-	}
-	updated := make([]HostedPreview, 0, len(previews)+1)
-	updated = append(updated, *preview)
-	for _, item := range previews {
-		if strings.TrimSpace(item.Slug) == strings.TrimSpace(preview.Slug) {
-			continue
-		}
-		updated = append(updated, item)
-		if len(updated) >= 8 {
-			break
-		}
-	}
 	data, err := json.MarshalIndent(updated, "", "  ")
 	if err != nil {
 		return err