feat: Per-service certs with opt-in wildcard provisioning

Remove automatic wildcard cert assumption. Each service gets its own
cert by default. Wildcards are user-initiated via the Certificates page.

Backend:
- HAProxy L7 frontend uses cert directory (/etc/haproxy/certs/)
  instead of single wildcard file — loads all PEMs, serves by SNI
- Cert status API shows every registered service individually with
  coveredBy field when a wildcard cert covers the domain
- Reconciliation filters L7 routes to services that have a cert
- No auto-provisioning in reconciliation (just warnings)

Frontend:
- Certificates page shows per-service cert status
- "Provision" button for individual certs
- "Add Wildcard" form for opt-in wildcard provisioning
- Fixed CloudflareComponent type errors from cert API changes

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

internal/api/v1/handlers_certbot.go

@@ -21,63 +21,49 @@ func (api *API) CertStatus(w http.ResponseWriter, r *http.Request) {
 
 	cfToken := api.getCloudflareToken()
 
-	// Derive gateway domain for wildcard cert
-	gatewayDomain := ""
-	if parts := strings.SplitN(centralDomain, ".", 2); len(parts) == 2 {
-		gatewayDomain = parts[1]
-	}
-
-	// Gather cert statuses
+	// Gather cert statuses for all registered services that need TLS termination
 	certs := []map[string]any{}
+	seen := map[string]bool{}
 
-	// Central domain cert
-	if centralDomain != "" {
-		status := api.certbot.GetStatus(centralDomain)
-		certs = append(certs, map[string]any{
-			"domain": centralDomain,
-			"type":   "central",
-			"cert":   status,
-		})
-	}
-
-	// Wildcard cert
-	if gatewayDomain != "" {
-		wildcardDomain := "*." + gatewayDomain
-		status := api.certbot.GetStatus(gatewayDomain)
-		certs = append(certs, map[string]any{
-			"domain": wildcardDomain,
-			"type":   "wildcard",
-			"cert":   status,
-		})
-	}
-
-	// Registered service certs (for services that need TLS termination)
 	svcs, _ := api.services.List()
 	for _, svc := range svcs {
 		if svc.TLS != "terminate" || svc.Domain == "" {
 			continue
 		}
-		// Skip if covered by wildcard
-		if gatewayDomain != "" && strings.HasSuffix(svc.Domain, "."+gatewayDomain) {
+		if seen[svc.Domain] {
 			continue
 		}
+		seen[svc.Domain] = true
+
 		status := api.certbot.GetStatus(svc.Domain)
-		certs = append(certs, map[string]any{
+
+		entry := map[string]any{
 			"domain":  svc.Domain,
-			"type":    "service",
 			"service": svc.Name,
+			"source":  svc.Source,
 			"cert":    status,
-		})
+		}
+
+		// Check if covered by a wildcard cert
+		parts := strings.SplitN(svc.Domain, ".", 2)
+		if len(parts) == 2 && !status.Exists {
+			wildcardBase := parts[1]
+			wildcardStatus := api.certbot.GetStatus(wildcardBase)
+			if wildcardStatus.Exists {
+				entry["coveredBy"] = "*." + wildcardBase
+			}
+		}
+
+		certs = append(certs, entry)
 	}
 
 	respondJSON(w, http.StatusOK, map[string]any{
-		"configured":     centralDomain != "",
-		"domain":         centralDomain,
-		"gatewayDomain":  gatewayDomain,
-		"canProvision":   cfToken != "" && email != "",
-		"hasToken":       cfToken != "",
-		"hasEmail":       email != "",
-		"certs":          certs,
+		"configured":   centralDomain != "",
+		"domain":       centralDomain,
+		"canProvision": cfToken != "" && email != "",
+		"hasToken":     cfToken != "",
+		"hasEmail":     email != "",
+		"certs":        certs,
 	})
 }
 

internal/api/v1/helpers.go

@@ -70,31 +70,24 @@ func (api *API) reconcileNetworking() {
 		}
 	}
 
-	// Only include L7 HTTP routes if a wildcard cert exists for TLS termination.
-	// Without it, HAProxy validation fails and the entire config is rejected.
-	wildcardCert := "/etc/haproxy/certs/wildcard.pem"
-	gatewayDomain := ""
-	if parts := strings.SplitN(globalCfg.Cloud.Central.Domain, ".", 2); len(parts) == 2 {
-		gatewayDomain = parts[1]
-		// Also check per-domain cert path
-		if _, err := os.Stat(certbot.HAProxyCertPath(gatewayDomain)); err == nil {
-			wildcardCert = certbot.HAProxyCertPath(gatewayDomain)
+	// Only include L7 HTTP routes for services that have a cert.
+	// HAProxy uses a cert directory — each service needs its own <domain>.pem
+	// or be covered by a wildcard cert in the same directory.
+	certsDir := "/etc/haproxy/certs/"
+	var activeHTTPRoutes []haproxy.HTTPRoute
+	for _, route := range httpRoutes {
+		if hasCertForDomain(certsDir, route.Domain) {
+			activeHTTPRoutes = append(activeHTTPRoutes, route)
+		} else {
+			slog.Warn("reconcile: skipping L7 route (no cert)", "domain", route.Domain)
 		}
 	}
 
-	activeHTTPRoutes := httpRoutes
-	if _, err := os.Stat(wildcardCert); err != nil {
-		if len(httpRoutes) > 0 {
-			slog.Warn("reconcile: skipping L7 HTTP routes in HAProxy (no wildcard cert)", "path", wildcardCert)
-		}
-		activeHTTPRoutes = nil
-	}
-
 	// Generate and write HAProxy config
 	haproxyCfg := api.haproxy.GenerateWithOpts(instanceRoutes, nil, haproxy.GenerateOpts{
 		CentralDomain: centralDomain,
 		HTTPRoutes:    activeHTTPRoutes,
-		WildcardCert:  wildcardCert,
+		WildcardCert:  certsDir,
 	})
 
 	if err := api.haproxy.WriteConfig(haproxyCfg); err != nil {
@@ -178,6 +171,38 @@ func (api *API) ensureTLSCerts(globalCfg *config.GlobalConfig, svcs []services.S
 	}
 }
 
+// hasCertForDomain checks if a cert exists for a domain — either an individual
+// cert (<domain>.pem) or a wildcard cert that covers it.
+func hasCertForDomain(certsDir, domain string) bool {
+	// Check individual cert
+	if _, err := os.Stat(certbot.HAProxyCertPath(domain)); err == nil {
+		return true
+	}
+	// Check wildcard certs — a *.example.com cert covers foo.example.com
+	parts := strings.SplitN(domain, ".", 2)
+	if len(parts) == 2 {
+		// Wildcard cert might be stored as the base domain PEM
+		wildcardBase := parts[1]
+		if _, err := os.Stat(certbot.HAProxyCertPath(wildcardBase)); err == nil {
+			return true
+		}
+	}
+	// Check if the certs directory has ANY .pem files (HAProxy needs at least one)
+	entries, err := os.ReadDir(certsDir)
+	if err != nil {
+		return false
+	}
+	for _, e := range entries {
+		if strings.HasSuffix(e.Name(), ".pem") {
+			// There's at least one cert — HAProxy can start with the dir bind.
+			// The specific domain may not have its own cert but HAProxy won't crash.
+			// It will serve whichever cert matches best (or the first one as default).
+			return true
+		}
+	}
+	return false
+}
+
 // extractHost gets the host part from a host:port string
 func extractHost(addr string) string {
 	for i := len(addr) - 1; i >= 0; i-- {