fix: improve spell UI - scrolling, execution control, and parameter markers

Three improvements to spell UI based on user feedback:

1. Fix tabs scroll issue - Change TabsContent overflow-hidden to overflow-auto
   in ProfileViewer, EventDetailViewer, and RelayViewer. This allows scrolling
   to content and clicking tabs when the visible area is small.

2. Prevent execution of parameterized spells without defaults - Add validation
   logic to check if spell has parameters and default values. Non-executable
   spells show as disabled (muted text, cursor-not-allowed, opacity-60) with
   helpful tooltips explaining where to use them (profile/event/relay viewer).

3. Add visual parameter type markers - Display Badge components showing the
   parameter type ($pubkey, $event, $relay) with User icon for $pubkey type.
   Applied to SpellRenderer (compact and detail views) and SpellsViewer cards.

Files modified:
- ProfileViewer.tsx - tabs scroll fix
- EventDetailViewer.tsx - tabs scroll fix
- RelayViewer.tsx - tabs scroll fix
- SpellRenderer.tsx - parameter validation and badges
- SpellsViewer.tsx - parameter validation and badges

src/components/EventDetailViewer.tsx

@@ -169,7 +169,7 @@ function SpellTabContent({
   return (
     <TabsContent
       value={spellId}
-      className="flex-1 overflow-hidden m-0 flex flex-col"
+      className="flex-1 overflow-auto m-0 flex flex-col"
     >
       {!appliedFilter ? (
         <div className="flex items-center justify-center h-full p-8 text-center text-muted-foreground">

src/components/ProfileViewer.tsx

@@ -257,7 +257,7 @@ function SpellTabContent({
   return (
     <TabsContent
       value={spellId}
-      className="flex-1 overflow-hidden m-0 flex flex-col"
+      className="flex-1 overflow-auto m-0 flex flex-col"
     >
       {!appliedFilter ? (
         <div className="flex items-center justify-center h-full p-8 text-center text-muted-foreground">

src/components/RelayViewer.tsx

@@ -139,7 +139,7 @@ function SpellTabContent({
   return (
     <TabsContent
       value={spellId}
-      className="flex-1 overflow-hidden m-0 flex flex-col"
+      className="flex-1 overflow-auto m-0 flex flex-col"
     >
       {!appliedFilter ? (
         <div className="flex items-center justify-center h-full p-8 text-center text-muted-foreground">

src/components/SpellsViewer.tsx

@@ -11,6 +11,7 @@ import {
   Archive,
   WandSparkles as Wand,
   BookUp,
+  User,
 } from "lucide-react";
 import { useLiveQuery } from "dexie-react-hooks";
 import db from "@/services/db";
@@ -63,6 +64,12 @@ function SpellCard({ spell, onDelete, onPublish }: SpellCardProps) {
     }
   }, [spell.command]);
 
+  // Check if spell has parameters but no defaults
+  const hasParameters = !!spell.parameterType;
+  const hasDefault =
+    spell.parameterDefault && spell.parameterDefault.length > 0;
+  const canExecute = !hasParameters || hasDefault;
+
   const handlePublish = async () => {
     setIsPublishing(true);
     try {
@@ -112,6 +119,17 @@ function SpellCard({ spell, onDelete, onPublish }: SpellCardProps) {
             >
               {displayName}
             </CardTitle>
+            {hasParameters && (
+              <Badge
+                variant="outline"
+                className="text-[10px] gap-1 flex-shrink-0"
+              >
+                {spell.parameterType === "$pubkey" && (
+                  <User className="size-3" />
+                )}
+                {spell.parameterType}
+              </Badge>
+            )}
           </div>
           {spell.deletedAt ? (
             <Badge variant="outline" className="text-muted-foreground">
@@ -139,13 +157,22 @@ function SpellCard({ spell, onDelete, onPublish }: SpellCardProps) {
 
       <CardContent className="p-4 pt-0 flex-1">
         <div className="flex flex-col gap-2">
-          <ExecutableCommand
-            commandLine={spell.command}
-            className="text-xs truncate line-clamp-1 text-primary hover:underline cursor-pointer"
-            spellId={spell.id}
-          >
-            {spell.command}
-          </ExecutableCommand>
+          {canExecute ? (
+            <ExecutableCommand
+              commandLine={spell.command}
+              className="text-xs truncate line-clamp-1 text-primary hover:underline cursor-pointer"
+              spellId={spell.id}
+            >
+              {spell.command}
+            </ExecutableCommand>
+          ) : (
+            <div
+              className="text-xs truncate line-clamp-1 text-muted-foreground cursor-not-allowed opacity-60"
+              title={`Requires a ${spell.parameterType} to run. Use from ${spell.parameterType === "$pubkey" ? "profile" : spell.parameterType === "$event" ? "event" : "relay"} viewer.`}
+            >
+              {spell.command}
+            </div>
+          )}
           <div className="flex flex-wrap gap-1.5 mt-1">
             {kinds.map((kind) => (
               <KindBadge

src/components/nostr/kinds/SpellRenderer.tsx

@@ -152,18 +152,34 @@ export function SpellRenderer({ event }: BaseEventProps) {
   try {
     const spell = decodeSpell(event as SpellEvent);
 
+    // Check if spell has parameters but no defaults
+    const hasParameters = !!spell.parameter;
+    const hasDefault =
+      spell.parameter?.default && spell.parameter.default.length > 0;
+    const canExecute = !hasParameters || hasDefault;
+
     return (
       <BaseEventContainer event={event}>
         <div className="flex flex-col gap-2">
-          {/* Title */}
-          {spell.name && (
-            <ClickableEventTitle
-              event={event}
-              className="text-lg font-semibold text-foreground"
-            >
-              {spell.name}
-            </ClickableEventTitle>
-          )}
+          {/* Title with parameter marker */}
+          <div className="flex items-center gap-2 flex-wrap">
+            {spell.name && (
+              <ClickableEventTitle
+                event={event}
+                className="text-lg font-semibold text-foreground"
+              >
+                {spell.name}
+              </ClickableEventTitle>
+            )}
+            {hasParameters && spell.parameter && (
+              <Badge variant="outline" className="text-[10px] gap-1">
+                {spell.parameter.type === "$pubkey" && (
+                  <User className="size-3" />
+                )}
+                {spell.parameter.type}
+              </Badge>
+            )}
+          </div>
 
           {/* Description */}
           {spell.description && (
@@ -172,13 +188,22 @@ export function SpellRenderer({ event }: BaseEventProps) {
             </p>
           )}
 
-          {/* Command Preview */}
-          <ExecutableCommand
-            commandLine={spell.command}
-            className="text-xs font-mono bg-muted/30 p-2 border border-border truncate line-clamp-1 text-primary hover:underline cursor-pointer"
-          >
-            {spell.command}
-          </ExecutableCommand>
+          {/* Command Preview - only executable if has defaults or no parameters */}
+          {canExecute ? (
+            <ExecutableCommand
+              commandLine={spell.command}
+              className="text-xs font-mono bg-muted/30 p-2 border border-border truncate line-clamp-1 text-primary hover:underline cursor-pointer"
+            >
+              {spell.command}
+            </ExecutableCommand>
+          ) : (
+            <div
+              className="text-xs font-mono bg-muted/30 p-2 border border-border truncate line-clamp-1 text-muted-foreground cursor-not-allowed opacity-60"
+              title={`Requires a ${spell.parameter?.type} to run. Use from ${spell.parameter?.type === "$pubkey" ? "profile" : spell.parameter?.type === "$event" ? "event" : "relay"} viewer.`}
+            >
+              {spell.command}
+            </div>
+          )}
 
           {/* Kind Badges */}
           {spell.filter.kinds && spell.filter.kinds.length > 0 && (
@@ -220,6 +245,12 @@ export function SpellDetailRenderer({ event }: BaseEventProps) {
   try {
     const spell = decodeSpell(event as SpellEvent);
 
+    // Check if spell has parameters but no defaults
+    const hasParameters = !!spell.parameter;
+    const hasDefault =
+      spell.parameter?.default && spell.parameter.default.length > 0;
+    const canExecute = !hasParameters || hasDefault;
+
     // Create a display filter that includes since/until even in relative format
     const displayFilter = { ...spell.filter };
 
@@ -237,14 +268,27 @@ export function SpellDetailRenderer({ event }: BaseEventProps) {
     return (
       <div className="flex flex-col gap-6 p-4">
         <div className="flex flex-col gap-2">
-          {spell.name && (
-            <ClickableEventTitle
-              event={event}
-              className="text-2xl font-bold hover:underline cursor-pointer"
-            >
-              {spell.name}
-            </ClickableEventTitle>
-          )}
+          <div className="flex items-center gap-3 flex-wrap">
+            {spell.name && (
+              <ClickableEventTitle
+                event={event}
+                className="text-2xl font-bold hover:underline cursor-pointer"
+              >
+                {spell.name}
+              </ClickableEventTitle>
+            )}
+            {hasParameters && spell.parameter && (
+              <Badge variant="outline" className="text-xs gap-1.5">
+                {spell.parameter.type === "$pubkey" && (
+                  <User className="size-3.5" />
+                )}
+                {spell.parameter.type}
+                {hasDefault && (
+                  <span className="text-[10px] opacity-70">(has default)</span>
+                )}
+              </Badge>
+            )}
+          </div>
           {spell.description && (
             <p className="text-muted-foreground">{spell.description}</p>
           )}
@@ -254,12 +298,30 @@ export function SpellDetailRenderer({ event }: BaseEventProps) {
           <h3 className="text-sm font-semibold uppercase tracking-wider text-muted-foreground">
             Command
           </h3>
-          <ExecutableCommand
-            commandLine={spell.command}
-            className="text-sm font-mono p-4 bg-muted/30 border border-border text-primary hover:underline hover:decoration-dotted cursor-crosshair break-words overflow-x-auto"
-          >
-            {spell.command}
-          </ExecutableCommand>
+          {canExecute ? (
+            <ExecutableCommand
+              commandLine={spell.command}
+              className="text-sm font-mono p-4 bg-muted/30 border border-border text-primary hover:underline hover:decoration-dotted cursor-crosshair break-words overflow-x-auto"
+            >
+              {spell.command}
+            </ExecutableCommand>
+          ) : (
+            <div className="flex flex-col gap-2">
+              <div className="text-sm font-mono p-4 bg-muted/30 border border-border text-muted-foreground cursor-not-allowed opacity-60 break-words overflow-x-auto">
+                {spell.command}
+              </div>
+              <p className="text-xs text-muted-foreground">
+                💡 This spell requires a {spell.parameter?.type} to run. Use it
+                from a{" "}
+                {spell.parameter?.type === "$pubkey"
+                  ? "profile"
+                  : spell.parameter?.type === "$event"
+                    ? "event"
+                    : "relay"}{" "}
+                viewer to execute.
+              </p>
+            </div>
+          )}
         </div>
 
         {spell.filter.kinds && spell.filter.kinds.length > 0 && (