diff --git a/src/config.ts b/src/config.ts
index 57e1279..2dbc3d9 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -41,13 +41,6 @@ export const AUTH_CONFIG = {
   REFRESH_COOKIE_MAX_AGE_SHORT: 60 * 60 * 24 * 7, // 7 days
   REFRESH_COOKIE_MAX_AGE_LONG: 60 * 60 * 24 * 90, // 90 days
 
-  // Legacy (keep for backwards compatibility during migration)
-  JWT_EXPIRY: "15m" as const, // Deprecated: use ACCESS_TOKEN_EXPIRY
-  JWT_EXPIRY_SHORT: "15m" as const, // Deprecated
-  SESSION_COOKIE_MAX_AGE: 60 * 60 * 24 * 7, // Deprecated
-  REMEMBER_ME_MAX_AGE: 60 * 60 * 24 * 90, // Deprecated
-
-  // Security Settings
   REFRESH_TOKEN_ROTATION_ENABLED: true, // Enable token rotation
   MAX_ROTATION_COUNT: 100, // Max rotations before forcing re-login
   REFRESH_TOKEN_REUSE_WINDOW_MS: 5000, // 5s grace period for race conditions
diff --git a/src/lib/comment-utils.ts b/src/lib/comment-utils.ts
index 931d11d..6922da7 100644
--- a/src/lib/comment-utils.ts
+++ b/src/lib/comment-utils.ts
@@ -43,101 +43,6 @@ export function getCommentLevel(
   return level;
 }
 
-/**
- * @deprecated Server-side SQL sorting preferred for performance
- * Logarithmic decay formula: score / log(age + 2)
- */
-function calculateHotScore(
-  upvotes: number,
-  downvotes: number,
-  date: string
-): number {
-  const score = upvotes - downvotes;
-  const now = new Date().getTime();
-  const commentTime = new Date(date).getTime();
-  const ageInHours = (now - commentTime) / (1000 * 60 * 60);
-
-  return score / Math.log10(ageInHours + 2);
-}
-
-/**
- * @deprecated Server-side SQL sorting preferred for performance
- */
-function getUpvoteCount(
-  commentID: number,
-  reactionMap: Map<number, CommentReaction[]>
-): number {
-  const reactions = reactionMap.get(commentID) || [];
-  return reactions.filter(
-    (r) => r.type === "tears" || r.type === "heartEye" || r.type === "moneyEye"
-  ).length;
-}
-
-/**
- * @deprecated Server-side SQL sorting preferred for performance
- */
-function getDownvoteCount(
-  commentID: number,
-  reactionMap: Map<number, CommentReaction[]>
-): number {
-  const reactions = reactionMap.get(commentID) || [];
-  return reactions.filter(
-    (r) => r.type === "angry" || r.type === "sick" || r.type === "worried"
-  ).length;
-}
-
-/**
- * @deprecated Use server-side SQL sorting in routes/blog/[title]/index.tsx for better performance
- */
-export function sortComments(
-  comments: Comment[],
-  mode: SortingMode,
-  reactionMap: Map<number, CommentReaction[]>
-): Comment[] {
-  const sorted = [...comments];
-
-  switch (mode) {
-    case "newest":
-      return sorted.sort((a, b) => {
-        return new Date(b.date).getTime() - new Date(a.date).getTime();
-      });
-
-    case "oldest":
-      return sorted.sort((a, b) => {
-        return new Date(a.date).getTime() - new Date(b.date).getTime();
-      });
-
-    case "highest_rated":
-      return sorted.sort((a, b) => {
-        const upVotesA = getUpvoteCount(a.id, reactionMap);
-        const downVotesA = getDownvoteCount(a.id, reactionMap);
-        const upVotesB = getUpvoteCount(b.id, reactionMap);
-        const downVotesB = getDownvoteCount(b.id, reactionMap);
-
-        const scoreA = upVotesA - downVotesA;
-        const scoreB = upVotesB - downVotesB;
-
-        return scoreB - scoreA;
-      });
-
-    case "hot":
-      return sorted.sort((a, b) => {
-        const upVotesA = getUpvoteCount(a.id, reactionMap);
-        const downVotesA = getDownvoteCount(a.id, reactionMap);
-        const upVotesB = getUpvoteCount(b.id, reactionMap);
-        const downVotesB = getDownvoteCount(b.id, reactionMap);
-
-        const hotScoreA = calculateHotScore(upVotesA, downVotesA, a.date);
-        const hotScoreB = calculateHotScore(upVotesB, downVotesB, b.date);
-
-        return hotScoreB - hotScoreA;
-      });
-
-    default:
-      return sorted;
-  }
-}
-
 export function isValidCommentBody(body: string): boolean {
   return body.trim().length > 0 && body.length <= 10000;
 }
diff --git a/src/server/api/schemas/blog.ts b/src/server/api/schemas/blog.ts
index b01a8d2..76cfd75 100644
--- a/src/server/api/schemas/blog.ts
+++ b/src/server/api/schemas/blog.ts
@@ -6,15 +6,6 @@ import { z } from "zod";
  * Schemas for post creation, updating, querying, and interactions
  */
 
-// ============================================================================
-// Post Category and Status
-// ============================================================================
-
-/**
- * Post category enum (deprecated but kept for backward compatibility)
- */
-export const postCategorySchema = z.enum(["blog", "project"]);
-
 // ============================================================================
 // Post Creation and Updates
 // ============================================================================