diff --git a/.phase37-state.json b/.phase37-state.json
index a503ac3..8ba451a 100644
--- a/.phase37-state.json
+++ b/.phase37-state.json
@@ -1,5 +1,8 @@
 {
   "completed_features": [],
-  "current_feature": "stepper-component",
-  "started_at": "2026-05-23T10:03:26.504746"
+  "current_feature": "timeline-component",
+  "started_at": "2026-05-23T10:03:26.504746",
+  "attempted_features": [
+    "stepper-component"
+  ]
 }
\ No newline at end of file
diff --git a/GENERATION_LOG.md b/GENERATION_LOG.md
index 9b475cc..d4dde28 100644
--- a/GENERATION_LOG.md
+++ b/GENERATION_LOG.md
@@ -3974,3 +3974,21 @@ src/index.ts(27,25): error TS2769: No overload matches this call.
   Overload 1 of 3, '(plugin: FastifyPluginCallback<{ limits: { fileSize: number; }; }, RawServerDefault, FastifyTypeProvider, FastifyBaseLogger>, opts?: FastifyRegisterOptions<...> | undefined): FastifyInstance<...> & PromiseLike<...>', gave the following error.
     Argument of type 'Promise<FastifyMultipartPlugin>' is not assignable to parameter of type 'FastifyPluginCallback<{ limits: { fileSize: number; }; }, RawServerDefault, FastifyTypeProvider, FastifyBaseLogger>'.
       Type 'Promise<FastifyMultipartPlugin>' provides no match for the signature '(instance: FastifyInstance<RawServerDefault, IncomingMessage, ServerResponse<IncomingMessage>, 
+- `10:03:47` **INFO**   Committed feature stepper-component
+- `10:03:47` **INFO**   Pushed: rc=0
+
+## Phase-3 Feature: timeline-component (2026-05-23 10:03:47)
+
+- `10:03:47` **INFO** Description: Timeline für Activity-Feed
+- `10:03:47` **INFO**   Generating apps/web/src/components/Timeline.tsx (Timeline-Component. Props: items (array {id, title, description?, time…)
+- `10:04:03` **INFO**     wrote 1834 chars in 15.1s (attempt 1)
+- `10:04:03` **INFO** Running tsc --noEmit on api…
+- `10:04:04` **WARN**   tsc errors:
+src/db/schema.ts(37,14): error TS7022: 'customers' implicitly has type 'any' because it does not have a type annotation and is referenced directly or indirectly in its own initializer.
+src/db/schema.ts(45,59): error TS7024: Function implicitly has return type 'any' because it does not have a return type annotation and is referenced directly or indirectly in one of its return expressions.
+src/db/schema.ts(49,14): error TS7022: 'projects' implicitly has type 'any' because it does not have a type annotation and is referenced directly or indirectly in its own initializer.
+src/db/schema.ts(53,56): error TS7024: Function implicitly has return type 'any' because it does not have a return type annotation and is referenced directly or indirectly in one of its return expressions.
+src/index.ts(27,25): error TS2769: No overload matches this call.
+  Overload 1 of 3, '(plugin: FastifyPluginCallback<{ limits: { fileSize: number; }; }, RawServerDefault, FastifyTypeProvider, FastifyBaseLogger>, opts?: FastifyRegisterOptions<...> | undefined): FastifyInstance<...> & PromiseLike<...>', gave the following error.
+    Argument of type 'Promise<FastifyMultipartPlugin>' is not assignable to parameter of type 'FastifyPluginCallback<{ limits: { fileSize: number; }; }, RawServerDefault, FastifyTypeProvider, FastifyBaseLogger>'.
+      Type 'Promise<FastifyMultipartPlugin>' provides no match for the signature '(instance: FastifyInstance<RawServerDefault, IncomingMessage, ServerResponse<IncomingMessage>, 
diff --git a/apps/web/src/components/Timeline.tsx b/apps/web/src/components/Timeline.tsx
new file mode 100644
index 0000000..8dc1255
--- /dev/null
+++ b/apps/web/src/components/Timeline.tsx
@@ -0,0 +1,54 @@
+import React from 'react';
+
+interface TimelineItem {
+  id: string;
+  title: string;
+  description?: string;
+  timestamp: string;
+  icon?: React.ReactNode;
+  color?: string;
+}
+
+interface TimelineProps {
+  items: TimelineItem[];
+}
+
+const Timeline: React.FC<TimelineProps> = ({ items }) => {
+  return (
+    <div className="relative space-y-8 before:absolute before:inset-0 before:ml-5 before:-translate-x-px before:h-full before:w-0.5 before:bg-gradient-to-b before:from-transparent before:via-slate-300 before:to-transparent">
+      {items.map((item, index) => (
+        <div key={item.id} className="relative flex items-start group">
+          {/* Icon Circle */}
+          <div className={`relative z-10 flex items-center justify-center w-10 h-10 rounded-full border-2 bg-white shadow-sm transition-colors duration-200 ${item.color || 'border-slate-300 group-hover:border-blue-500'}`}>
+            {item.icon ? (
+              <div className="flex items-center justify-center">
+                {item.icon}
+              </div>
+            ) : (
+              <div className="w-2 h-2 rounded-full bg-slate-400" />
+            )}
+          </div>
+
+          {/* Content */}
+          <div className="flex flex-col ml-4 pt-1">
+            <div className="flex items-baseline gap-2">
+              <h3 className="text-sm font-semibold text-slate-900 leading-none">
+                {item.title}
+              </h3>
+              <span className="text-xs font-medium text-slate-400 whitespace-nowrap">
+                {item.timestamp}
+              </span>
+            </div>
+            {item.description && (
+              <p className="mt-1 text-sm text-slate-600 leading-relaxed">
+                {item.description}
+              </p>
+            )}
+          </div>
+        </div>
+      ))}
+    </div>
+  );
+};
+
+export default Timeline;
\ No newline at end of file