fix: resolve remaining TypeScript strict type errors

## BaseEventRenderer
- Import React namespace for React.MouseEvent types

## thread-builder
- Remove unused EventPointer and AddressPointer imports
- Remove unused isReplaceable variable
- Add type annotation for tag array parameter (t: string[])
- Remove unused npub variable, add TODO comment

## ComposeDialog
- Replace Badge component with div to avoid asChild prop issue
- Use inline-flex with Tailwind classes for mention badges

## RelaySelector
- Add explicit string[] type assertion for knownRelays array
- Fixes "unknown[]" inference from Map.keys()

All type errors fixed except environmental issues (missing deps).

src/components/ComposeDialog.tsx

@@ -391,13 +391,9 @@ function MentionBadge({
   const displayName = getDisplayName(pubkey, profile);
 
   return (
-    <Badge
-      variant="secondary"
-      className="pl-2 pr-1 py-1 flex items-center gap-2"
-      asChild={false}
-    >
+    <div className="inline-flex items-center gap-2 pl-2 pr-1 py-1 rounded-full bg-secondary text-secondary-foreground">
       <AtSign className="w-3 h-3" />
-      <span>{displayName}</span>
+      <span className="text-sm">{displayName}</span>
       <Button
         variant="ghost"
         size="icon"
@@ -407,6 +403,6 @@ function MentionBadge({
         <X className="h-3 w-3" />
         <span className="sr-only">Remove {displayName}</span>
       </Button>
-    </Badge>
+    </div>
   );
 }

src/components/RelaySelector.tsx

@@ -104,7 +104,7 @@ export function RelaySelector({
   );
 
   // Get all known relays from pool
-  const knownRelays = Array.from(relayStats.keys());
+  const knownRelays: string[] = Array.from(relayStats.keys()) as string[];
 
   return (
     <Popover open={isOpen} onOpenChange={setIsOpen}>

src/components/nostr/kinds/BaseEventRenderer.tsx

@@ -1,4 +1,4 @@
-import { useState } from "react";
+import React, { useState } from "react";
 import { NostrEvent } from "@/types/nostr";
 import { UserName } from "../UserName";
 import { KindBadge } from "@/components/KindBadge";

src/lib/thread-builder.ts

@@ -1,5 +1,4 @@
 import type { NostrEvent } from "nostr-tools/core";
-import type { EventPointer, AddressPointer } from "nostr-tools/nip19";
 import { getNip10References } from "applesauce-common/helpers/threading";
 
 /**
@@ -108,13 +107,12 @@ export function buildNip22Tags(
   // Add K tag (kind of parent event)
   tags.push(["K", String(replyTo.kind)]);
 
-  // Check if this is a replaceable event (30000-39999)
-  const isReplaceable = replyTo.kind >= 30000 && replyTo.kind < 40000;
+  // Check if this is a parameterized replaceable event (30000-39999)
   const isParameterized = replyTo.kind >= 30000 && replyTo.kind < 40000;
 
   if (isParameterized) {
     // Use A tag for parameterized replaceable events
-    const dTag = replyTo.tags.find((t) => t[0] === "d")?.[1] || "";
+    const dTag = replyTo.tags.find((t: string[]) => t[0] === "d")?.[1] || "";
     const coordinate = `${replyTo.kind}:${replyTo.pubkey}:${dTag}`;
     const relay = replyTo.relay;
     tags.push(relay ? ["A", coordinate, relay] : ["A", coordinate]);
@@ -187,10 +185,10 @@ export function extractMentionsFromContent(content: string): string[] {
 
   for (const match of matches) {
     try {
-      // Remove "nostr:" prefix and decode npub
-      const npub = match.replace("nostr:", "");
-      // We'll need to decode this - for now just extract the pattern
+      // Remove "nostr:" prefix
+      // TODO: decode npub to pubkey
       // The MentionEditor already handles encoding, so we can extract from tags instead
+      // This function is a placeholder for future enhancement
     } catch {
       // Skip invalid npubs
     }