diff --git a/app/(dashboard)/analytics/analytics-client.tsx b/app/(dashboard)/analytics/analytics-client.tsx
index fb772d7..6b29c0e 100644
--- a/app/(dashboard)/analytics/analytics-client.tsx
+++ b/app/(dashboard)/analytics/analytics-client.tsx
@@ -120,7 +120,7 @@ export function AnalyticsClient({ data }: AnalyticsClientProps) {
                           <div className="bg-background border border-border rounded-xl p-3 shadow-lg shadow-black/5">
                             <p className="font-medium text-foreground mb-2 text-sm">{label}</p>
                             <div className="space-y-1.5">
-                              {payload.map((entry: any, index: number) => (
+                              {payload.map((entry, index) => (
                                 <div key={index} className="flex items-center justify-between gap-6 text-xs">
                                   <div className="flex items-center gap-1.5">
                                     <div className="w-2 h-2 rounded-full" style={{ backgroundColor: entry.color }} />
diff --git a/app/(dashboard)/business/invoices/invoices-client.tsx b/app/(dashboard)/business/invoices/invoices-client.tsx
index 6b39516..d78f284 100644
--- a/app/(dashboard)/business/invoices/invoices-client.tsx
+++ b/app/(dashboard)/business/invoices/invoices-client.tsx
@@ -3,7 +3,7 @@
 import { useState } from "react";
 import { format } from "date-fns";
 import { tr } from "date-fns/locale";
-import { Receipt, Plus, MoreHorizontal, FileEdit, Trash2, Send, Download, CheckCircle2 } from "lucide-react";
+import { Plus, MoreHorizontal, FileEdit, Trash2, Send, Download, CheckCircle2 } from "lucide-react";
 import { Button, Card, CardContent, Badge } from "poyraz-ui/atoms";
 import {
   DropdownMenu,
diff --git a/app/(dashboard)/business/proposals/proposals-client.tsx b/app/(dashboard)/business/proposals/proposals-client.tsx
index 083cf20..b620c7e 100644
--- a/app/(dashboard)/business/proposals/proposals-client.tsx
+++ b/app/(dashboard)/business/proposals/proposals-client.tsx
@@ -3,7 +3,7 @@
 import { useState } from "react";
 import { format } from "date-fns";
 import { tr } from "date-fns/locale";
-import { FileText, Plus, MoreHorizontal, FileEdit, Trash2, Mail, CheckCircle2, XCircle } from "lucide-react";
+import { Plus, MoreHorizontal, FileEdit, Trash2, Mail, CheckCircle2, XCircle } from "lucide-react";
 import { Button, Card, CardContent, Badge } from "poyraz-ui/atoms";
 import {
   DropdownMenu,
diff --git a/app/(dashboard)/clients/clients-client.tsx b/app/(dashboard)/clients/clients-client.tsx
index ed4e37e..37e0034 100644
--- a/app/(dashboard)/clients/clients-client.tsx
+++ b/app/(dashboard)/clients/clients-client.tsx
@@ -1,7 +1,6 @@
 "use client";
 
 import {
-  archiveClientRecord,
   createClientRecord,
   updateClientRecord,
   updateClientPipelineStage,
@@ -28,10 +27,7 @@ import {
   toast,
 } from "poyraz-ui/molecules";
 import {
-  Archive,
-  ExternalLink,
   Mail,
-  PauseCircle,
   Pencil,
   Phone,
   Plus,
@@ -45,7 +41,6 @@ import Link from "next/link";
 import { useState } from "react";
 import { format, isPast, isToday } from "date-fns";
 import { tr } from "date-fns/locale";
-import { useEffect } from "react";
 import { cn } from "@/lib/utils";
 import { StatCard } from "@/components/system/stat-card";
 
@@ -68,19 +63,13 @@ export type ClientListItem = {
   client_value_score: number;
 };
 
-const statusLabels = {
-  active: "Aktif",
-  paused: "Duraklatıldı",
-  archived: "Arşivlendi",
-};
+type ClientPipelineStage = ClientListItem["pipeline_stage"];
 
-const statusClasses = {
-  active: "border-emerald-200 bg-emerald-50 text-emerald-700",
-  paused: "border-amber-200 bg-amber-50 text-amber-700",
-  archived: "border-zinc-200 bg-zinc-50 text-zinc-600",
-};
-
-const pipelineStages = [
+const pipelineStages: Array<{
+  id: ClientPipelineStage;
+  label: string;
+  color: string;
+}> = [
   { id: "lead", label: "Potansiyel (Lead)", color: "border-slate-200 bg-slate-50 text-slate-700" },
   { id: "contacted", label: "İletişime Geçildi", color: "border-blue-200 bg-blue-50 text-blue-700" },
   { id: "proposal_sent", label: "Teklif İletildi", color: "border-amber-200 bg-amber-50 text-amber-700" },
@@ -92,26 +81,24 @@ type ClientsClientProps = {
   clients: ClientListItem[];
   totalRevenue: number;
   activeCount: number;
-  pausedCount: number;
-  archivedCount: number;
 };
 
 export function ClientsClient({
   clients,
   totalRevenue,
   activeCount,
-  pausedCount,
-  archivedCount,
 }: ClientsClientProps) {
   const [query, setQuery] = useState("");
   const normalizedQuery = query.trim().toLowerCase();
   
   const [draggedClientId, setDraggedClientId] = useState<string | null>(null);
-  const [localClients, setLocalClients] = useState(clients);
-
-  useEffect(() => {
-    setLocalClients(clients);
-  }, [clients]);
+  const [pipelineOverrides, setPipelineOverrides] = useState<
+    Partial<Record<string, ClientPipelineStage>>
+  >({});
+  const localClients = clients.map((client) => ({
+    ...client,
+    pipeline_stage: pipelineOverrides[client.id] ?? client.pipeline_stage,
+  }));
 
   function handleDragStart(event: React.DragEvent<HTMLDivElement>, clientId: string) {
     setDraggedClientId(clientId);
@@ -119,7 +106,7 @@ export function ClientsClient({
     event.dataTransfer.setData("text/plain", clientId);
   }
 
-  async function handleDrop(newStage: string) {
+  async function handleDrop(newStage: ClientPipelineStage) {
     if (!draggedClientId) return;
 
     const clientId = draggedClientId;
@@ -128,15 +115,17 @@ export function ClientsClient({
     const client = localClients.find(c => c.id === clientId);
     if (!client || client.pipeline_stage === newStage) return;
 
-    setLocalClients(prev => 
-      prev.map(c => c.id === clientId ? { ...c, pipeline_stage: newStage as any } : c)
-    );
+    const previousStage = client.pipeline_stage;
+    setPipelineOverrides((current) => ({ ...current, [clientId]: newStage }));
 
     try {
-      await updateClientPipelineStage(clientId, newStage as any);
+      await updateClientPipelineStage(clientId, newStage);
       toast.success("Müşteri aşaması güncellendi.");
     } catch (error) {
-      setLocalClients(clients);
+      setPipelineOverrides((current) => ({
+        ...current,
+        [clientId]: previousStage,
+      }));
       toast.error(
         error instanceof Error
           ? error.message
diff --git a/app/(dashboard)/clients/page.tsx b/app/(dashboard)/clients/page.tsx
index 721cee8..9780bba 100644
--- a/app/(dashboard)/clients/page.tsx
+++ b/app/(dashboard)/clients/page.tsx
@@ -57,8 +57,6 @@ export default async function ClientsPage() {
       clients={clients}
       totalRevenue={clients.reduce((sum, client) => sum + client.revenueTotal, 0)}
       activeCount={clients.filter((client) => client.status === "active").length}
-      pausedCount={clients.filter((client) => client.status === "paused").length}
-      archivedCount={clients.filter((client) => client.status === "archived").length}
     />
   );
 }
diff --git a/app/(dashboard)/dashboard-client.tsx b/app/(dashboard)/dashboard-client.tsx
index 9d2470c..4e91863 100644
--- a/app/(dashboard)/dashboard-client.tsx
+++ b/app/(dashboard)/dashboard-client.tsx
@@ -125,14 +125,14 @@ export function DashboardClient({ data }: DashboardClientProps) {
                             <div className="bg-background border border-border rounded-xl p-3 shadow-lg shadow-black/5">
                               <p className="font-medium text-foreground mb-2 text-sm">{label}</p>
                               <div className="space-y-1.5">
-                                {payload.map((entry: any, index: number) => (
+                                {payload.map((entry, index) => (
                                   <div key={index} className="flex items-center justify-between gap-6 text-xs">
                                     <div className="flex items-center gap-1.5">
                                       <div className="w-2 h-2 rounded-full" style={{ backgroundColor: entry.color }} />
                                       <span className="text-muted-foreground">{entry.name === 'income' ? 'Gelir' : 'Gider'}</span>
                                     </div>
                                     <span className="font-semibold text-foreground">
-                                      {formatCurrency(entry.value)}
+                                      {formatCurrency(Number(entry.value ?? 0))}
                                     </span>
                                   </div>
                                 ))}
diff --git a/app/(dashboard)/finance/finance-client.tsx b/app/(dashboard)/finance/finance-client.tsx
index 80b9102..866172d 100644
--- a/app/(dashboard)/finance/finance-client.tsx
+++ b/app/(dashboard)/finance/finance-client.tsx
@@ -644,8 +644,10 @@ function AIFinanceDialog() {
         throw new Error(data.error || "Bilinmeyen bir hata oluştu.");
       }
       setResult(data.text);
-    } catch (err: any) {
-      setResult("Hata: " + err.message);
+    } catch (error) {
+      setResult(
+        `Hata: ${error instanceof Error ? error.message : "Bilinmeyen bir hata oluştu."}`,
+      );
     } finally {
       setLoading(false);
     }
diff --git a/app/(dashboard)/projects/[id]/page.tsx b/app/(dashboard)/projects/[id]/page.tsx
index 1bdc742..eaa509d 100644
--- a/app/(dashboard)/projects/[id]/page.tsx
+++ b/app/(dashboard)/projects/[id]/page.tsx
@@ -5,6 +5,7 @@ import {
   type ProjectDetailTaskItem,
   type ProjectFinanceItem,
   type ProjectPlanningSectionItem,
+  type ProjectRevisionItem,
 } from "@/app/(dashboard)/projects/[id]/project-detail-client";
 import { DomainError } from "@/server/domain/errors";
 import { requireFreelancerBackend } from "@/server/web/freelancer";
@@ -18,7 +19,7 @@ export default async function ProjectDetailPage({ params }: { params: Promise<{
     sections: ProjectPlanningSectionItem[];
     tasks: ProjectDetailTaskItem[];
     financeTransactions: ProjectFinanceItem[];
-    revisions: Array<Record<string, unknown>>;
+    revisions: ProjectRevisionItem[];
   };
   try {
     const row = service.getProject(actor, id);
diff --git a/app/(dashboard)/projects/[id]/project-detail-client.tsx b/app/(dashboard)/projects/[id]/project-detail-client.tsx
index b983579..84d0d4a 100644
--- a/app/(dashboard)/projects/[id]/project-detail-client.tsx
+++ b/app/(dashboard)/projects/[id]/project-detail-client.tsx
@@ -46,7 +46,8 @@ import {
   Trash2,
   Wallet,
 } from "lucide-react";
-import { useEffect, useState, useTransition, type DragEvent } from "react";
+import Image from "next/image";
+import { useState, useTransition, type DragEvent } from "react";
 
 export type ProjectDetail = {
   id: string;
@@ -105,12 +106,20 @@ export type ProjectFinanceItem = {
   category: string | null;
 };
 
+export type ProjectRevisionItem = {
+  id: string;
+  description: string;
+  status: "pending" | "in_progress" | "completed" | "rejected";
+  created_at: string;
+  requested_by: string;
+};
+
 type ProjectDetailClientProps = {
   project: ProjectDetail;
   sections: ProjectPlanningSectionItem[];
   tasks: ProjectDetailTaskItem[];
   financeTransactions: ProjectFinanceItem[];
-  revisions: any[];
+  revisions: ProjectRevisionItem[];
 };
 
 const typeLabels = {
@@ -239,11 +248,14 @@ export function ProjectDetailClient({
         <Card>
           <CardContent className="p-0">
             {project.coverImageUrl ? (
-              <div className="aspect-[16/7] overflow-hidden rounded-t-sm border-b border-border bg-muted">
-                <img
+              <div className="relative aspect-[16/7] overflow-hidden rounded-t-sm border-b border-border bg-muted">
+                <Image
                   src={project.coverImageUrl}
                   alt={project.cover_image_alt || project.name}
-                  className="h-full w-full object-cover"
+                  fill
+                  sizes="(min-width: 1024px) 60vw, 100vw"
+                  unoptimized
+                  className="object-cover"
                 />
               </div>
             ) : (
@@ -339,16 +351,29 @@ export function ProjectDetailClient({
   );
 }
 
-function RevisionsPanel({ projectId, revisions }: { projectId: string; revisions: any[] }) {
+function RevisionsPanel({
+  projectId,
+  revisions,
+}: {
+  projectId: string;
+  revisions: ProjectRevisionItem[];
+}) {
   const [isUpdating, setIsUpdating] = useState(false);
 
-  async function handleStatusChange(id: string, status: string) {
+  async function handleStatusChange(
+    id: string,
+    status: ProjectRevisionItem["status"],
+  ) {
     setIsUpdating(true);
     try {
       const { updateRevisionStatus } = await import("@/app/(dashboard)/projects/actions");
       await updateRevisionStatus(id, projectId, status);
-    } catch (err: any) {
-      console.error(err);
+    } catch (error) {
+      toast.error(
+        error instanceof Error
+          ? error.message
+          : "Revizyon durumu güncellenemedi.",
+      );
     } finally {
       setIsUpdating(false);
     }
@@ -370,7 +395,12 @@ function RevisionsPanel({ projectId, revisions }: { projectId: string; revisions
                   </div>
                   <Select
                     defaultValue={rev.status}
-                    onValueChange={(val) => handleStatusChange(rev.id, val)}
+                    onValueChange={(value) =>
+                      handleStatusChange(
+                        rev.id,
+                        value as ProjectRevisionItem["status"],
+                      )
+                    }
                     disabled={isUpdating}
                   >
                     <SelectTrigger className="w-40 h-8 text-xs">
@@ -591,26 +621,31 @@ function TaskPanel({
   tasks: ProjectDetailTaskItem[];
 }) {
   const [view, setView] = useState<"list" | "kanban">("list");
-  const [localTasks, setLocalTasks] = useState(tasks);
+  const [statusOverrides, setStatusOverrides] = useState<
+    Partial<Record<string, ProjectDetailTaskItem["status"]>>
+  >({});
   const [pendingTaskIds, setPendingTaskIds] = useState<Set<string>>(new Set());
   const [, startTransition] = useTransition();
-
-  useEffect(() => {
-    setLocalTasks(tasks);
-  }, [tasks]);
+  const localTasks = tasks.map((task) => ({
+    ...task,
+    status: statusOverrides[task.id] ?? task.status,
+  }));
 
   function handleTaskStatusChange(taskId: string, status: ProjectDetailTaskItem["status"]) {
-    const previousTasks = localTasks;
+    const previousStatus = localTasks.find((task) => task.id === taskId)?.status;
 
     setPendingTask(taskId, true);
-    setLocalTasks((currentTasks) =>
-      currentTasks.map((task) => (task.id === taskId ? { ...task, status } : task)),
-    );
+    setStatusOverrides((current) => ({ ...current, [taskId]: status }));
 
     startTransition(() => {
       void updateTaskStatusRecord(taskId, status, projectId)
         .catch((error) => {
-          setLocalTasks(previousTasks);
+          setStatusOverrides((current) => {
+            const next = { ...current };
+            if (previousStatus) next[taskId] = previousStatus;
+            else delete next[taskId];
+            return next;
+          });
           toast.error(
             error instanceof Error
               ? error.message
@@ -924,7 +959,7 @@ function ProjectSettingsDialog({ project }: { project: ProjectDetail }) {
               </div>
             )}
             {progressType === "auto" && (
-              <p className="text-xs text-muted-foreground">İlerleme yüzdesi "Görevler" sekmesindeki görevlerin tamamlanma durumuna göre otomatik hesaplanacaktır.</p>
+              <p className="text-xs text-muted-foreground">İlerleme yüzdesi &quot;Görevler&quot; sekmesindeki görevlerin tamamlanma durumuna göre otomatik hesaplanacaktır.</p>
             )}
 
             <div className="grid gap-2">
diff --git a/app/(dashboard)/projects/projects-client.tsx b/app/(dashboard)/projects/projects-client.tsx
index 7b777bb..871bdd7 100644
--- a/app/(dashboard)/projects/projects-client.tsx
+++ b/app/(dashboard)/projects/projects-client.tsx
@@ -38,8 +38,9 @@ import {
   Brain,
   Loader2,
 } from "lucide-react";
-import { usePathname, useRouter } from "next/navigation";
-import { useEffect, useState, type ChangeEvent } from "react";
+import Image from "next/image";
+import { useRouter } from "next/navigation";
+import { useEffect, useState, useTransition, type ChangeEvent } from "react";
 import { StatCard } from "@/components/system/stat-card";
 
 export type ProjectClientOption = {
@@ -215,17 +216,13 @@ function ProjectCard({
   clients: ProjectClientOption[];
 }) {
   const router = useRouter();
-  const pathname = usePathname();
-  const [isNavigating, setIsNavigating] = useState(false);
+  const [isNavigating, startNavigation] = useTransition();
   const detailHref = `/projects/${project.id}`;
 
-  useEffect(() => {
-    setIsNavigating(false);
-  }, [pathname]);
-
   function goToProjectDetail() {
-    setIsNavigating(true);
-    router.push(detailHref);
+    startNavigation(() => {
+      router.push(detailHref);
+    });
   }
 
   function prefetchProjectDetail() {
@@ -287,11 +284,14 @@ function ProjectCard({
 function ProjectCover({ project }: { project: ProjectListItem }) {
   if (project.coverImageUrl) {
     return (
-      <div className="aspect-video overflow-hidden rounded-sm border border-border bg-muted">
-        <img
+      <div className="relative aspect-video overflow-hidden rounded-sm border border-border bg-muted">
+        <Image
           src={project.coverImageUrl}
           alt={project.cover_image_alt || project.name}
-          className="h-full w-full object-cover"
+          fill
+          sizes="(min-width: 1280px) 30vw, (min-width: 768px) 45vw, 100vw"
+          unoptimized
+          className="object-cover"
         />
       </div>
     );
@@ -515,10 +515,13 @@ function CoverImageInput({ project }: { project?: ProjectListItem }) {
         className="group relative flex aspect-16/7 cursor-pointer items-center justify-center overflow-hidden rounded-sm border border-dashed border-border bg-muted/20 transition-colors hover:border-primary/50 hover:bg-primary/5"
       >
         {previewUrl ? (
-          <img
+          <Image
             src={previewUrl}
             alt={project?.cover_image_alt || project?.name || "Proje kapak görseli önizlemesi"}
-            className="h-full w-full object-cover"
+            fill
+            sizes="(min-width: 640px) 640px, 100vw"
+            unoptimized
+            className="object-cover"
           />
         ) : (
           <div className="flex flex-col items-center gap-3 text-muted-foreground transition-colors group-hover:text-primary">
diff --git a/app/(dashboard)/tasks/tasks-client.tsx b/app/(dashboard)/tasks/tasks-client.tsx
index 3443862..6fbac1e 100644
--- a/app/(dashboard)/tasks/tasks-client.tsx
+++ b/app/(dashboard)/tasks/tasks-client.tsx
@@ -31,7 +31,7 @@ import {
   Plus,
   Trash2,
 } from "lucide-react";
-import { useEffect, useState, useTransition, type DragEvent } from "react";
+import { useState, useTransition, type DragEvent } from "react";
 
 export type TaskRelationOption = {
   id: string;
@@ -82,29 +82,37 @@ type TasksClientProps = {
 };
 
 export function TasksClient({ tasks, clients, projects }: TasksClientProps) {
-  const [localTasks, setLocalTasks] = useState(tasks);
+  const [statusOverrides, setStatusOverrides] = useState<
+    Partial<Record<string, TaskListItem["status"]>>
+  >({});
+  const [deletedTaskIds, setDeletedTaskIds] = useState<Set<string>>(new Set());
   const [query, setQuery] = useState("");
   const [projectFilter, setProjectFilter] = useState("__all");
   const [view, setView] = useState<"list" | "kanban">("list");
   const [pendingTaskIds, setPendingTaskIds] = useState<Set<string>>(new Set());
   const [, startTransition] = useTransition();
-
-  useEffect(() => {
-    setLocalTasks(tasks);
-  }, [tasks]);
+  const localTasks = tasks
+    .filter((task) => !deletedTaskIds.has(task.id))
+    .map((task) => ({
+      ...task,
+      status: statusOverrides[task.id] ?? task.status,
+    }));
 
   function handleTaskStatusChange(taskId: string, status: TaskListItem["status"]) {
-    const previousTasks = localTasks;
+    const previousStatus = localTasks.find((task) => task.id === taskId)?.status;
 
     setPendingTask(taskId, true);
-    setLocalTasks((currentTasks) =>
-      currentTasks.map((task) => (task.id === taskId ? { ...task, status } : task)),
-    );
+    setStatusOverrides((current) => ({ ...current, [taskId]: status }));
 
     startTransition(() => {
       void updateTaskStatusRecord(taskId, status)
         .catch((error) => {
-          setLocalTasks(previousTasks);
+          setStatusOverrides((current) => {
+            const next = { ...current };
+            if (previousStatus) next[taskId] = previousStatus;
+            else delete next[taskId];
+            return next;
+          });
           toast.error(
             error instanceof Error
               ? error.message
@@ -118,7 +126,6 @@ export function TasksClient({ tasks, clients, projects }: TasksClientProps) {
   }
 
   function handleTaskDelete(taskId: string) {
-    const previousTasks = localTasks;
     const task = localTasks.find((item) => item.id === taskId);
     const formData = new FormData();
     formData.set("id", taskId);
@@ -128,12 +135,16 @@ export function TasksClient({ tasks, clients, projects }: TasksClientProps) {
     }
 
     setPendingTask(taskId, true);
-    setLocalTasks((currentTasks) => currentTasks.filter((item) => item.id !== taskId));
+    setDeletedTaskIds((current) => new Set(current).add(taskId));
 
     startTransition(() => {
       void deleteTaskRecord(formData)
         .catch((error) => {
-          setLocalTasks(previousTasks);
+          setDeletedTaskIds((current) => {
+            const next = new Set(current);
+            next.delete(taskId);
+            return next;
+          });
           toast.error(
             error instanceof Error ? error.message : "Görev silinemedi.",
           );