Fix v0.3.7: tag dashboard + editor as dormant, generalize requires check

Functional audit found dashboard and editor render blank — they depend
on the removed sw.* imperative SDK (sw.tabs, sw.chat, sw.layout, etc).
Tagged with requires: ["legacy-sdk"] so the installer auto-sets dormant.

Generalized the dormant requires check: any unmet requirement now
triggers dormant status, not just "chat".

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

server/handlers/packages.go

@@ -584,21 +584,23 @@ func (h *PackageHandler) InstallPackage(c *gin.Context) {
 	}
 
 	// v0.3.7: Auto-set dormant for packages with unmet requires.
-	isDormant := false
+	// Known capabilities: (none yet — chat and legacy-sdk are future/removed).
+	knownCaps := map[string]bool{}
+	var unmetReqs []string
 	if reqs, ok := manifest["requires"].([]any); ok && len(reqs) > 0 {
 		for _, r := range reqs {
 			req, _ := r.(string)
-			if req == "chat" {
-				isDormant = true
-				break
+			if req != "" && !knownCaps[req] {
+				unmetReqs = append(unmetReqs, req)
 			}
 		}
 	}
+	isDormant := len(unmetReqs) > 0
 	if isDormant {
 		h.stores.Packages.SetStatus(c.Request.Context(), pkgID, "dormant")
 		h.stores.Packages.SetEnabled(c.Request.Context(), pkgID, false)
 		preservedEnabled = false
-		log.Printf("[packages] %s: dormant (unmet requires: chat)", pkgID)
+		log.Printf("[packages] %s: dormant (unmet requires: %v)", pkgID, unmetReqs)
 	}
 
 	resp := gin.H{