refactor: replace all explicit any types with proper TypeScript types

Backend resolvers: typed enrichArticle/enrichVideo/enrichModel with DB
and $inferSelect types, SQL<unknown>[] for conditions arrays, proper
enum casts for status/role fields, $inferInsert for .set() updates,
typed raw SQL result rows in gamification, ReplyLike interface for
ctx.reply in auth. Frontend: typed catch blocks with Error/interface
casts, isActiveLink param, adminGetUser response, tags filter callback.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/frontend/src/routes/videos/[slug]/+page.svelte

@@ -58,8 +58,8 @@
         isLiked = true;
         toast.success("Added to liked videos");
       }
-    } catch (error: any) {
-      toast.error(error.message || "Failed to update like");
+    } catch (error) {
+      toast.error((error instanceof Error ? error.message : null) || "Failed to update like");
     } finally {
       isLikeLoading = false;
     }
@@ -86,8 +86,8 @@
       invalidateAll();
       newComment = "";
       showComments = true;
-    } catch (err: any) {
-      commentError = err.message;
+    } catch (err) {
+      commentError = err instanceof Error ? err.message : "Unknown error";
       isCommentError = true;
     } finally {
       isCommentLoading = false;