diff --git a/public/app.mjs b/public/app.mjs
index 8cb9d28..e88c9b0 100644
--- a/public/app.mjs
+++ b/public/app.mjs
@@ -336,24 +336,60 @@ function render_detail_panel() {
 
 	// Linked files
 	const files_list = qs(content, '.detail-files-list');
-	const linked_files = all_pdfs.filter(p => (comp.file_ids ?? []).includes(p.id));
-	if (linked_files.length === 0) {
-		const note = document.createElement('p');
-		note.className = 'detail-empty-note';
-		note.textContent = 'No files linked.';
-		files_list.replaceChildren(note);
-	} else {
-		files_list.replaceChildren(...linked_files.map(pdf => {
+
+	async function save_file_ids(new_ids) {
+		const result = await api.update_component(comp.id, { file_ids: new_ids });
+		const idx = all_components.findIndex(c => c.id === comp.id);
+		if (idx !== -1) all_components[idx] = result.component;
+		render_detail_panel();
+	}
+
+	function rebuild_detail_files() {
+		const linked_files = all_pdfs.filter(p => (comp.file_ids ?? []).includes(p.id));
+		const rows = linked_files.map(pdf => {
+			const row = document.createElement('div');
+			row.className = 'detail-file-row';
+
 			const a = document.createElement('a');
 			a.className = 'detail-file-link';
 			a.href = `/pdf/${pdf.filename}`;
 			a.target = '_blank';
 			a.rel = 'noopener';
 			a.textContent = pdf.display_name;
-			return a;
-		}));
+
+			const unlink_btn = document.createElement('button');
+			unlink_btn.type = 'button';
+			unlink_btn.className = 'btn-icon btn-danger';
+			unlink_btn.textContent = '✕';
+			unlink_btn.title = 'Unlink file';
+			unlink_btn.addEventListener('click', () => {
+				const new_ids = (comp.file_ids ?? []).filter(id => id !== pdf.id);
+				save_file_ids(new_ids);
+			});
+
+			row.append(a, unlink_btn);
+			return row;
+		});
+
+		if (rows.length === 0) {
+			const note = document.createElement('p');
+			note.className = 'detail-empty-note';
+			note.textContent = 'No files linked.';
+			files_list.replaceChildren(note);
+		} else {
+			files_list.replaceChildren(...rows);
+		}
 	}
 
+	rebuild_detail_files();
+
+	qs(content, '.detail-link-file-btn').addEventListener('click', () => {
+		open_file_picker((pdf) => {
+			const new_ids = [...new Set([...(comp.file_ids ?? []), pdf.id])];
+			save_file_ids(new_ids);
+		});
+	});
+
 	// Inventory entries
 	const inv_list = qs(content, '.detail-inventory-list');
 	const entries = inventory_for_component(comp.id);
@@ -1421,42 +1457,6 @@ function open_component_dialog(comp = null) {
 	desc_input.value = comp?.description ?? '';
 
 	const active_fields = new Map(Object.entries(comp?.fields ?? {}));
-	const active_file_ids = new Set(comp?.file_ids ?? []);
-	const file_rows_el = qs(dlg, '#c-file-rows');
-
-	function rebuild_file_rows() {
-		const linked = all_pdfs.filter(p => active_file_ids.has(p.id));
-		file_rows_el.replaceChildren(...linked.map(pdf => {
-			const row = document.createElement('div');
-			row.className = 'c-field-input-row';
-
-			const name_el = document.createElement('span');
-			name_el.className = 'c-field-input-label';
-			name_el.textContent = pdf.display_name;
-
-			const remove_btn = document.createElement('button');
-			remove_btn.type = 'button';
-			remove_btn.className = 'btn-icon btn-danger';
-			remove_btn.textContent = '✕';
-			remove_btn.title = 'Unlink file';
-			remove_btn.addEventListener('click', () => {
-				active_file_ids.delete(pdf.id);
-				rebuild_file_rows();
-			});
-
-			row.append(name_el, remove_btn);
-			return row;
-		}));
-	}
-
-	rebuild_file_rows();
-
-	qs(dlg, '#c-link-file').addEventListener('click', () => {
-		open_file_picker((pdf) => {
-			active_file_ids.add(pdf.id);
-			rebuild_file_rows();
-		});
-	});
 
 	function rebuild_field_rows() {
 		field_rows_el.replaceChildren(...[...active_fields.entries()].map(([fid, val]) => {
@@ -1552,7 +1552,7 @@ function open_component_dialog(comp = null) {
 		for (const [fid, val] of active_fields.entries()) {
 			if (val.trim()) fields[fid] = val.trim();
 		}
-		const body = { name, description: desc_input.value.trim(), fields, file_ids: [...active_file_ids] };
+		const body = { name, description: desc_input.value.trim(), fields };
 		if (comp) {
 			const result = await api.update_component(comp.id, body);
 			const idx = all_components.findIndex(c => c.id === comp.id);
diff --git a/public/style.css b/public/style.css
index 2225620..15bfcb0 100644
--- a/public/style.css
+++ b/public/style.css
@@ -1571,6 +1571,12 @@ nav {
 	gap: 0.3rem;
 }
 
+.detail-file-row {
+	display: flex;
+	align-items: center;
+	gap: 0.5rem;
+}
+
 .detail-file-link {
 	color: var(--accent);
 	text-decoration: none;
diff --git a/public/templates.html b/public/templates.html
index 27f738f..b39a537 100644
--- a/public/templates.html
+++ b/public/templates.html
@@ -58,7 +58,10 @@
 		</div>
 
 		<div class="detail-block">
-			<div class="detail-block-label">Files</div>
+			<div class="detail-block-label">
+				Files
+				<button class="btn btn-secondary detail-link-file-btn">+ Link file</button>
+			</div>
 			<div class="detail-files-list"></div>
 		</div>
 
@@ -401,12 +404,7 @@
 					<button type="button" class="btn btn-secondary btn-sm" id="c-new-field">New…</button>
 				</div>
 			</div>
-			<div class="form-section-label">Files</div>
-			<div id="c-file-rows"></div>
-			<div class="form-row">
-				<button type="button" class="btn btn-secondary btn-sm" id="c-link-file">Link file…</button>
-			</div>
-			<div class="dialog-actions">
+<div class="dialog-actions">
 				<button type="button" class="btn btn-secondary" id="c-cancel">Cancel</button>
 				<button type="submit" class="btn btn-primary" id="c-save">Save</button>
 			</div>