fix: prevent command text overflow in spell dialogs

Replace `break-all` with `break-words overflow-x-auto` to improve
text wrapping behavior in command preview areas. This prevents
words from breaking awkwardly in the middle while still allowing
long commands to be displayed properly.

Changes:
- CreateSpellDialog.tsx: Fixed command preview overflow
- SpellDialog.tsx: Fixed command display overflow
- SpellRenderer.tsx: Fixed detail view command overflow

The new approach breaks at word boundaries when possible and
provides horizontal scrolling for exceptionally long commands.

src/components/CreateSpellDialog.tsx

@@ -601,7 +601,7 @@ export function CreateSpellDialog({
               <label className="text-xs font-medium text-muted-foreground uppercase">
                 Generated Command
               </label>
-              <div className="bg-background border rounded-md p-3 font-mono text-xs break-all text-primary">
+              <div className="bg-background border rounded-md p-3 font-mono text-xs break-words overflow-x-auto text-primary">
                 {generatedCommand}
               </div>
             </div>

src/components/nostr/SpellDialog.tsx

@@ -343,7 +343,7 @@ export function SpellDialog({
             <label htmlFor="command" className="text-sm font-medium">
               Command
             </label>
-            <div className="rounded-md border border-input bg-muted px-3 py-2 text-sm font-mono">
+            <div className="rounded-md border border-input bg-muted px-3 py-2 text-sm font-mono break-words overflow-x-auto">
               {filterSpellCommand(
                 mode === "edit" && existingSpell
                   ? existingSpell.command

src/components/nostr/kinds/SpellRenderer.tsx

@@ -256,7 +256,7 @@ export function SpellDetailRenderer({ event }: BaseEventProps) {
           </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-all"
+            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>