diff --git a/app/api/history/[id]/route.ts b/app/api/history/[id]/route.ts
index 278c0b4..f593d81 100644
--- a/app/api/history/[id]/route.ts
+++ b/app/api/history/[id]/route.ts
@@ -3,17 +3,18 @@ import { query } from '@/lib/db';
 import logger from '@/lib/log';
 
 export async function DELETE(_req: Request, { params }: { params: Promise<{ id: string }> }) {
+  const start = Date.now();
   const session = await auth();
   if (!session?.user?.email) {
-    logger.warn({ route: 'history.delete' }, 'unauthenticated');
+    logger.warn({ durationMs: Date.now() - start }, 'history.delete.unauthenticated');
     return Response.json({ error: 'Unauthorized' }, { status: 401 });
   }
 
   const { id } = await params;
-  await query(
+  const result = await query(
     'DELETE FROM chat_histories WHERE id = $1 AND user_email = $2',
     [id, session.user.email],
   );
-  logger.info({ user: session.user.email, id }, 'history.delete');
+  logger.info({ user: session.user.email, id, durationMs: Date.now() - start, deleted: result.rowCount ?? 0 }, 'history.delete');
   return new Response(null, { status: 204 });
 }
diff --git a/app/api/history/route.ts b/app/api/history/route.ts
index 83a9044..5098589 100644
--- a/app/api/history/route.ts
+++ b/app/api/history/route.ts
@@ -3,9 +3,10 @@ import { query } from '@/lib/db';
 import logger from '@/lib/log';
 
 export async function GET() {
+  const start = Date.now();
   const session = await auth();
   if (!session?.user?.email) {
-    logger.warn({ route: 'history.list' }, 'unauthenticated');
+    logger.warn({ durationMs: Date.now() - start }, 'history.list.unauthenticated');
     return Response.json({ error: 'Unauthorized' }, { status: 401 });
   }
 
@@ -13,25 +14,36 @@ export async function GET() {
     'SELECT id, iv, ciphertext, updated_at FROM chat_histories WHERE user_email = $1 ORDER BY updated_at DESC',
     [session.user.email],
   );
-  logger.info({ user: session.user.email, rows: result.rows.length }, 'history.list');
-  return Response.json(result.rows);
+  const rows = result.rows;
+  const newestAt = rows[0]?.updated_at ?? null;
+  const oldestAt = rows[rows.length - 1]?.updated_at ?? null;
+  logger.info({
+    user: session.user.email,
+    durationMs: Date.now() - start,
+    rows: rows.length,
+    newestAt,
+    oldestAt,
+  }, 'history.list');
+  return Response.json(rows);
 }
 
 export async function POST(req: Request) {
+  const start = Date.now();
   const session = await auth();
   if (!session?.user?.email) {
-    logger.warn({ route: 'history.save' }, 'unauthenticated');
+    logger.warn({ durationMs: Date.now() - start }, 'history.save.unauthenticated');
     return Response.json({ error: 'Unauthorized' }, { status: 401 });
   }
 
   const { id, iv, ciphertext } = await req.json();
+  const ciphertextBytes = Math.round((ciphertext?.length ?? 0) * 0.75);
 
   if (id) {
     await query(
       'UPDATE chat_histories SET iv = $1, ciphertext = $2, updated_at = now() WHERE id = $3 AND user_email = $4',
       [iv, ciphertext, id, session.user.email],
     );
-    logger.info({ user: session.user.email, id, op: 'update' }, 'history.save');
+    logger.info({ user: session.user.email, id, op: 'update', durationMs: Date.now() - start, ciphertextBytes }, 'history.save');
     return Response.json({ id });
   }
 
@@ -41,6 +53,6 @@ export async function POST(req: Request) {
      RETURNING id`,
     [session.user.email, iv, ciphertext],
   );
-  logger.info({ user: session.user.email, id: result.rows[0].id, op: 'insert' }, 'history.save');
+  logger.info({ user: session.user.email, id: result.rows[0].id, op: 'insert', durationMs: Date.now() - start, ciphertextBytes }, 'history.save');
   return Response.json({ id: result.rows[0].id });
 }
diff --git a/app/api/settings/route.ts b/app/api/settings/route.ts
index 1f625c6..8bf314d 100644
--- a/app/api/settings/route.ts
+++ b/app/api/settings/route.ts
@@ -3,9 +3,10 @@ import { query } from '@/lib/db';
 import logger from '@/lib/log';
 
 export async function GET() {
+  const start = Date.now();
   const session = await auth();
   if (!session?.user?.email) {
-    logger.warn({ route: 'settings.get' }, 'unauthenticated');
+    logger.warn({ route: 'settings.get', durationMs: Date.now() - start }, 'unauthenticated');
     return Response.json({ error: 'Unauthorized' }, { status: 401 });
   }
 
@@ -14,7 +15,13 @@ export async function GET() {
     [session.user.email],
   );
   const row = result.rows[0];
-  logger.info({ user: session.user.email, hasKey: !!row?.key_jwk }, 'settings.get');
+  logger.info({
+    user: session.user.email,
+    durationMs: Date.now() - start,
+    hasKey: !!row?.key_jwk,
+    saveHistory: row?.save_history ?? false,
+    newUser: !row,
+  }, 'settings.get');
   return Response.json({
     systemPrompt: row?.system_prompt ?? '',
     saveHistory:  row?.save_history  ?? false,
@@ -23,9 +30,10 @@ export async function GET() {
 }
 
 export async function PUT(req: Request) {
+  const start = Date.now();
   const session = await auth();
   if (!session?.user?.email) {
-    logger.warn({ route: 'settings.put' }, 'unauthenticated');
+    logger.warn({ route: 'settings.put', durationMs: Date.now() - start }, 'unauthenticated');
     return Response.json({ error: 'Unauthorized' }, { status: 401 });
   }
 
@@ -38,6 +46,11 @@ export async function PUT(req: Request) {
        key_jwk       = COALESCE(EXCLUDED.key_jwk, user_settings.key_jwk)`,
     [session.user.email, systemPrompt ?? '', saveHistory ?? false, keyJwk ?? null],
   );
-  logger.info({ user: session.user.email, saveHistory: saveHistory ?? false }, 'settings.put');
+  logger.info({
+    user: session.user.email,
+    durationMs: Date.now() - start,
+    saveHistory: saveHistory ?? false,
+    hasKey: !!keyJwk,
+  }, 'settings.put');
   return new Response(null, { status: 204 });
 }
diff --git a/app/api/shares/[id]/route.ts b/app/api/shares/[id]/route.ts
index 3747317..d4d481f 100644
--- a/app/api/shares/[id]/route.ts
+++ b/app/api/shares/[id]/route.ts
@@ -1,11 +1,15 @@
 import { query } from '@/lib/db';
+import logger from '@/lib/log';
 
 export async function GET(_req: Request, { params }: { params: Promise<{ id: string }> }) {
+  const start = Date.now();
   const { id } = await params;
   const result = await query(
     'SELECT id, model, system_prompt, messages, created_at FROM shared_chats WHERE id = $1',
     [id],
   );
-  if (result.rows.length === 0) return new Response('Not found', { status: 404 });
+  const found = result.rows.length > 0;
+  logger.info({ id, found, durationMs: Date.now() - start }, 'share.get');
+  if (!found) return new Response('Not found', { status: 404 });
   return Response.json(result.rows[0]);
 }
diff --git a/app/api/shares/route.ts b/app/api/shares/route.ts
index 7f7d857..7380501 100644
--- a/app/api/shares/route.ts
+++ b/app/api/shares/route.ts
@@ -4,13 +4,17 @@ import { query } from '@/lib/db';
 import logger from '@/lib/log';
 
 export async function POST(req: NextRequest) {
+  const start = Date.now();
   const session = await auth();
   if (!session?.user?.email) {
+    logger.warn({ durationMs: Date.now() - start }, 'share.create.unauthenticated');
     return Response.json({ error: 'Unauthorized' }, { status: 401 });
   }
 
   const body = await req.json();
-  if (JSON.stringify(body).length > 500_000) {
+  const bodyBytes = JSON.stringify(body).length;
+  if (bodyBytes > 500_000) {
+    logger.warn({ user: session.user.email, bodyBytes, durationMs: Date.now() - start }, 'share.create.too_large');
     return Response.json(
       { error: 'Chat too large to share. Try removing image attachments first.' },
       { status: 413 },
@@ -24,6 +28,6 @@ export async function POST(req: NextRequest) {
     [id, session.user.email, model, systemPrompt || null, JSON.stringify(messages)],
   );
 
-  logger.info({ user: session.user.email, id, model, msgs: messages.length }, 'share.create');
+  logger.info({ user: session.user.email, id, model, msgs: messages.length, bodyBytes, durationMs: Date.now() - start }, 'share.create');
   return Response.json({ id });
 }
diff --git a/app/page.tsx b/app/page.tsx
index 6438ef3..44cf639 100644
--- a/app/page.tsx
+++ b/app/page.tsx
@@ -112,7 +112,8 @@ export default function Home() {
     const saved = localStorage.getItem(MODEL_KEY);
     if (saved) setModel(saved);
 
-    fetch('/api/settings')
+    const ac = new AbortController();
+    fetch('/api/settings', { signal: ac.signal })
       .then(r => r.json())
       .then(async ({ systemPrompt, saveHistory: sh, keyJwk }) => {
         if (systemPrompt) setSystemPrompt(systemPrompt);
@@ -130,7 +131,7 @@ export default function Home() {
           }).catch(() => {});
         }
       })
-      .catch(() => { keyResolveRef.current?.(); });
+      .catch(e => { if (e.name !== 'AbortError') keyResolveRef.current?.(); });
 
     const fork = localStorage.getItem('gippidy-fork');
     if (fork) {
@@ -142,6 +143,7 @@ export default function Home() {
       localStorage.removeItem('gippidy-fork');
       chatIdRef.current = null; // fork always starts a new history entry
     }
+    return () => ac.abort();
   }, []);
 
   useEffect(() => {