diff --git a/Makefile b/Makefile
index fe84387..8bfbc94 100644
--- a/Makefile
+++ b/Makefile
@@ -26,7 +26,7 @@ build:
 
 ## deps: install Node.js, pnpm and native-module build tools (Fedora)
 deps: require-root
-	dnf install -y nodejs gcc-c++ make python3
+	dnf install -y nodejs gcc-c++ make python3 rsync
 	corepack enable
 
 ## install: full production install on a fresh checkout (Fedora)
@@ -41,9 +41,14 @@ service: require-root
 	# Dedicated system user (no login, no home).
 	id -u $(SERVICE_USER) >/dev/null 2>&1 || \
 		useradd --system --no-create-home --shell /usr/sbin/nologin $(SERVICE_USER)
-	# Copy the whole tree so pnpm's symlinked node_modules stay intact.
+	# Copy the tree (preserving pnpm's symlinked node_modules) but leave behind
+	# the repo metadata, local dev database, and editor/nix cruft.
 	mkdir -p $(PREFIX)
-	cp -a . $(PREFIX)/
+	rsync -a --delete \
+		--exclude='.git' --exclude='.direnv' --exclude='.env' \
+		--exclude='*.db' --exclude='*.db-wal' --exclude='*.db-shm' \
+		--exclude='$(PREFIX)' \
+		./ $(PREFIX)/
 	# Config + secrets — never clobber an existing env file.
 	mkdir -p $(CONFDIR)
 	test -f $(CONFDIR)/wutzcalc.env || \
diff --git a/README.md b/README.md
index a21460a..77a4d39 100644
--- a/README.md
+++ b/README.md
@@ -105,7 +105,7 @@ sudo useradd --system --no-create-home --shell /usr/sbin/nologin wutzcalc
 
 # 2. Install the built app (run `pnpm install && pnpm build` first)
 sudo mkdir -p /opt/wutzcalc
-sudo cp -a . /opt/wutzcalc            # or rsync/checkout into place
+sudo rsync -a --exclude='.git' --exclude='*.db*' ./ /opt/wutzcalc/
 sudo chown -R root:root /opt/wutzcalc # app dir stays read-only to the service
 
 # 3. Config + secrets (chmod 600 — holds ADMIN_PASSWORD)
diff --git a/client/src/admin/Admin.tsx b/client/src/admin/Admin.tsx
index 81884d3..40dc8b8 100644
--- a/client/src/admin/Admin.tsx
+++ b/client/src/admin/Admin.tsx
@@ -62,7 +62,7 @@ function Login({ onAuthed }: { onAuthed: () => void }) {
           value={pw}
           onInput={(e: any) => setPw(e.currentTarget.value)}
         />
-        {err && <div style="color:#ff8a8a">{err}</div>}
+        {err && <div style="color:var(--danger)">{err}</div>}
         <button type="submit">Anmelden</button>
       </div>
     </form>
@@ -107,7 +107,7 @@ function Stats() {
     <>
       <div class="row" style="justify-content: space-between">
         <h2 style="margin:0">Umsatz nach Tagen</h2>
-        <button onClick={reset} style="background:#5a2a2a; border-color:#7a3a3a">Statistik zurücksetzen</button>
+        <button class="danger" onClick={reset}>Statistik zurücksetzen</button>
       </div>
       <table>
         <thead><tr><th>Tag</th><th>Transaktionen</th><th>Bezahlt</th><th>Crew-Transaktionen</th><th>Pfand zurück</th></tr></thead>
@@ -227,7 +227,7 @@ function Drinks() {
                   <button onClick={() => patch(d.id, { archived: !d.archived } as any)}>
                     {d.archived ? 'aktivieren' : 'archivieren'}
                   </button>
-                  <button onClick={() => del(d)} style="background:#5a2a2a; border-color:#7a3a3a">löschen</button>
+                  <button class="danger" onClick={() => del(d)}>löschen</button>
                 </div>
               </td>
             </tr>
@@ -377,7 +377,7 @@ function Bars() {
     <>
       <h2>Bars</h2>
       {bars.map(b => (
-        <div key={b.id} style="margin-bottom:16px; padding:8px; border:1px solid #333; border-radius:6px">
+        <div key={b.id} style="margin-bottom:16px; padding:8px; border:1px solid var(--border); border-radius:6px">
           <div class="row">
             <label>
               Name
@@ -397,7 +397,7 @@ function Bars() {
                 }
               />
             </label>
-            <button onClick={() => delBar(b)} style="background:#5a2a2a; border-color:#7a3a3a; margin-left:auto">Tresen löschen</button>
+            <button class="danger" onClick={() => delBar(b)} style="margin-left:auto">Tresen löschen</button>
           </div>
           <BarDrinkEditor
             bar={b}
diff --git a/server/src/time.ts b/server/src/time.ts
index e70445b..3302406 100644
--- a/server/src/time.ts
+++ b/server/src/time.ts
@@ -39,7 +39,7 @@ function localParts(d: Date, tz: string = TZ): LocalParts {
     hour: '2-digit',
     minute: '2-digit',
     second: '2-digit',
-    hour12: false,
+    hourCycle: 'h23', // force midnight as 00, never the 24 artifact
   });
   const parts: Record<string, string> = {};
   for (const p of fmt.formatToParts(d)) {
@@ -49,7 +49,7 @@ function localParts(d: Date, tz: string = TZ): LocalParts {
     year: Number(parts.year),
     month: Number(parts.month),
     day: Number(parts.day),
-    hour: Number(parts.hour === '24' ? '0' : parts.hour),
+    hour: Number(parts.hour),
     minute: Number(parts.minute),
     second: Number(parts.second),
   };