feat(sync): add SSE live feed, unified logs page, fix Oracle connection

- Add SSE event bus in sync_service (subscribe/unsubscribe/_emit)
- Add GET /api/sync/stream SSE endpoint for real-time sync progress
- Rewrite logs.html: unified runs table + live feed + summary + filters
- Rewrite logs.js: SSE EventSource client, run selection, pagination
- Dashboard: clickable runs navigate to /logs?run=, sync started banner
- Remove "Import Comenzi" nav item, delete sync_detail.html
- Add error_message column to sync_runs table with migration
- Fix: export TNS_ADMIN as OS env var so oracledb finds tnsnames.ora
- Fix: use get_oracle_connection() instead of direct pool.acquire()
- Fix: CRM_POLITICI_PRET_ART INSERT to match actual table schema

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

api/app/static/css/style.css

@@ -212,3 +212,73 @@ body {
     align-items: center;
     justify-content: center;
 }
+
+/* Live Feed */
+.live-feed {
+    max-height: 300px;
+    overflow-y: auto;
+    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
+    font-size: 0.8125rem;
+    scroll-behavior: smooth;
+}
+
+.feed-entry {
+    padding: 0.35rem 0.75rem;
+    border-bottom: 1px solid #f1f5f9;
+    display: flex;
+    align-items: baseline;
+    gap: 0.5rem;
+}
+
+.feed-entry:last-child {
+    border-bottom: none;
+}
+
+.feed-entry.phase {
+    background-color: #eff6ff;
+    color: #1e40af;
+}
+
+.feed-entry.error {
+    background-color: #fef2f2;
+    color: #991b1b;
+}
+
+.feed-entry.success {
+    color: #166534;
+}
+
+.feed-entry .feed-time {
+    color: #94a3b8;
+    white-space: nowrap;
+    min-width: 5rem;
+}
+
+.feed-entry .feed-icon {
+    min-width: 1.25rem;
+    text-align: center;
+}
+
+.feed-entry .feed-msg {
+    flex: 1;
+    word-break: break-word;
+}
+
+/* Live pulse animation */
+.live-pulse {
+    animation: pulse 1.5s ease-in-out infinite;
+}
+
+@keyframes pulse {
+    0%, 100% { opacity: 1; }
+    50% { opacity: 0.5; }
+}
+
+/* Clickable table rows */
+.table-hover tbody tr[data-href] {
+    cursor: pointer;
+}
+
+.table-hover tbody tr[data-href]:hover {
+    background-color: #e2e8f0;
+}