feat(dashboard): export current view

templates/dashboard.html

@@ -34,6 +34,11 @@
                 <option value="rejected">Rejected</option>
                 <option value="errors">Errors</option>
             </select>
+            <select id="exportFormat" title="Export format">
+                <option value="jsonl">JSONL</option>
+                <option value="csv">CSV</option>
+            </select>
+            <button class="btn-export" onclick="exportCurrent()">Export</button>
         </div>
 
         <!-- New Engram -->
@@ -167,14 +172,7 @@ function setView(view) {
 }
 
 async function loadCards() {
-    let url = `/api/engrams?limit=${state.limit}&offset=${state.offset}`;
-    if (state.search) url += `&search=${encodeURIComponent(state.search)}`;
-    if (state.filter === 'confirmed') url += '&confirmed=1';
-    if (state.filter === 'pending') url += '&confirmed=0';
-    if (state.filter === 'rejected') url += '&verdict=confirmed_false';
-    if (state.filter === 'errors') url += '&tag=error';
-
-    const data = await api(url);
+    const data = await api(buildEngramsUrl(state.limit, state.offset));
     state.items = data.items;
     renderCardsWithSuggestions();
     document.getElementById('pageNum').textContent = Math.floor(state.offset / state.limit) + 1;
@@ -182,6 +180,68 @@ async function loadCards() {
     document.getElementById('btnNext').disabled = data.items.length < state.limit;
 }
 
+function buildEngramsUrl(limit, offset) {
+    let url = `/api/engrams?limit=${limit}&offset=${offset}`;
+    if (state.search) url += `&search=${encodeURIComponent(state.search)}`;
+    if (state.filter === 'confirmed') url += '&confirmed=1';
+    if (state.filter === 'pending') url += '&confirmed=0';
+    if (state.filter === 'rejected') url += '&verdict=confirmed_false';
+    if (state.filter === 'errors') url += '&tag=error';
+    return url;
+}
+
+async function exportCurrent() {
+    const fmt = (document.getElementById('exportFormat')?.value || 'jsonl').toLowerCase();
+    const limit = 100;
+    const max = 5000;
+    let offset = 0;
+    let all = [];
+    while (all.length < max) {
+        const data = await api(buildEngramsUrl(limit, offset));
+        const items = data.items || [];
+        all = all.concat(items);
+        if (items.length < limit) break;
+        offset += limit;
+    }
+
+    const safe = (s) => String(s ?? '').replace(/[\\r\\n]+/g, ' ').trim();
+    let payload = '';
+    let mime = 'text/plain';
+    if (fmt === 'csv') {
+        mime = 'text/csv';
+        const esc = (v) => '\"' + String(v ?? '').replace(/\"/g, '\"\"') + '\"';
+        payload += ['id','created','source','confidence','verdict','tags','content'].join(',') + '\\n';
+        for (const it of all) {
+            payload += [
+                esc(it.id),
+                esc(it.created),
+                esc(it.source),
+                esc(it.confidence),
+                esc(it.verdict),
+                esc((it.tags || []).join('|')),
+                esc((it.content || '').replace(/\\r?\\n/g, '\\\\n')),
+            ].join(',') + '\\n';
+        }
+    } else {
+        mime = 'application/x-ndjson';
+        payload = all.map(x => JSON.stringify(x)).join('\\n') + (all.length ? '\\n' : '');
+    }
+
+    const now = new Date();
+    const ymd = `${now.getFullYear()}-${String(now.getMonth()+1).padStart(2,'0')}-${String(now.getDate()).padStart(2,'0')}`;
+    const filename = `second-brain_${ymd}_${safe(state.filter || 'all')}_${fmt}.${fmt}`;
+
+    const blob = new Blob([payload], {type: mime});
+    const url = URL.createObjectURL(blob);
+    const a = document.createElement('a');
+    a.href = url;
+    a.download = filename;
+    document.body.appendChild(a);
+    a.click();
+    a.remove();
+    setTimeout(() => URL.revokeObjectURL(url), 1000);
+}
+
 async function loadStatus() {
     const reqs = await Promise.allSettled([
         api('/api/config'),