Chat panel in the garden editor (#57) (#71)

Co-authored-by: Steve Dudenhoeffer <[email protected]>

internal/api/api.go

@@ -53,6 +53,10 @@ func New(cfg *config.Config, svc *service.Service) *gin.Engine {
 	// is set; see csrfGuard).
 	v1.Use(h.csrfGuard())
 	v1.GET("/healthz", healthz)
+	// What this instance can actually do, so the UI offers only what works.
+	// Registered after the agent below, because it reports whether the runner
+	// actually built — not merely whether it was configured to.
+	v1.GET("/capabilities", h.capabilities)
 
 	// Auth endpoints are exempt from requireAuth (you can't be logged in yet);
 	// /me is the one that needs a session. Feature routers in later issues attach
@@ -125,6 +129,17 @@ func New(cfg *config.Config, svc *service.Service) *gin.Engine {
 	// The garden assistant, registered only when it can actually be offered —
 	// the same shape as OIDC. An instance with no API key serves the app
 	// normally and simply doesn't have these routes.
+	if !cfg.Agent.Ready() {
+		// Say WHY, at startup, in the logs an operator is already looking at.
+		// Someone who set the key and sees no assistant otherwise has nothing to
+		// check — and "is the variable reaching the container?" is exactly the
+		// question they need answered.
+		slog.Info("api: garden assistant disabled",
+			"enabled", cfg.Agent.Enabled,
+			"hasApiKey", cfg.Agent.OllamaCloudAPIKey != "",
+			"model", cfg.Agent.Model,
+			"hint", "needs OLLAMA_CLOUD_API_KEY set in the container's environment (not just the stack's)")
+	}
 	if cfg.Agent.Ready() {
 		runner, err := agent.NewRunner(svc, cfg)
 		if err != nil {
@@ -180,6 +195,16 @@ func New(cfg *config.Config, svc *service.Service) *gin.Engine {
 	return r
 }
 
+// capabilities reports what this instance can actually do, so the UI offers only
+// what works.
+//
+// It reports whether the runner BUILT, not whether it was configured: a
+// configured-but-unresolvable model leaves the routes unregistered, and saying
+// "yes" there would offer a chat tab whose first message 404s.
+func (h *handlers) capabilities(c *gin.Context) {
+	c.JSON(http.StatusOK, gin.H{"agent": h.agent != nil})
+}
+
 // healthz is a liveness probe: always returns {"ok": true} when the server is up.
 func healthz(c *gin.Context) {
 	c.JSON(http.StatusOK, gin.H{"ok": true})