fix: resolve all 69 ESLint warnings across 40 files

- Remove unused imports (Mail, CalendarIcon, Plus, Circle, cn, Link,
  MessageCircle, User, Tag, FolderUp, useEffect, LogOut, GripVertical,
  Check, X, HoverActionsMode, HoverActionsCorner, asn1js, Convert, etc.)
- Prefix unused variables/params with underscore to satisfy no-unused-vars
- Add missing React hook dependencies (exhaustive-deps)
- Wrap handleNavigateUp in useCallback and selectedGroupMembers in useMemo
- Remove unused eslint-disable directives in jmap/client.ts
- Replace as any with typed casts in filter-store and smime-store tests
- Remove dead code (macOk assignment, unused now variable)

lib/jmap/client.ts

@@ -568,7 +568,6 @@ export class JMAPClient implements IJMAPClient {
     let position = 0;
     const batchSize = 100;
 
-    // eslint-disable-next-line no-constant-condition
     while (true) {
       const { emails, hasMore } = await this.getEmails(mailboxId, undefined, batchSize, position);
       allEmails.push(...emails);
@@ -788,7 +787,6 @@ export class JMAPClient implements IJMAPClient {
     let position = 0;
     const batchSize = 100;
 
-    // eslint-disable-next-line no-constant-condition
     while (true) {
       const response = await this.request([
         ["Email/query", {
@@ -3836,7 +3834,7 @@ export class JMAPClient implements IJMAPClient {
     blob: Blob,
     identityId: string,
     sentMailboxId: string,
-    draftMailboxId?: string,
+    _draftMailboxId?: string,
   ): Promise<void> {
     // Upload the raw message
     const file = new File([blob], 'message.eml', { type: 'message/rfc822' });