feat(discord-bridge): dashboard publicat in tailnet prin tailscale serve

https://claude-agent.tailf7372d.ts.net/punte — acelasi tipar ca /echo de pe
moltbot: procesul ramane legat de 127.0.0.1, tailscaled il proxeaza si pune HTTPS.

Montarea sub prefix a cerut doua schimbari:

- toate URL-urile din pagini sunt acum relative, fiindca --set-path TAIE prefixul
  inainte de a proxa (serverul vede /api/status, browserul cere /punte/api/status).
  DASHBOARD_PREFIX ramane necesar doar pentru redirectul de login, si e acceptat
  si intact pe intrare, ca sa mearga si curl direct pe localhost.
- adresa fara slash final (/punte) primeste 301 catre /punte/: altfel URL-urile
  relative s-ar rezolva la radacina hostului, unde proxy-ul nu trimite nimic
  incoace, si panoul ar arata gol fara nicio eroare vizibila.

ops/install.sh configureaza serve-ul daca sudo permite; altfel spune comanda.
Sase teste noi pentru montarea sub prefix (31 in total pe dashboard).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B29CApsP1JkSdjYaGaHpE7

proxmox/lxc171-claude-agent/discord-bridge/ops/install.sh

@@ -137,6 +137,25 @@ else
     rm -f "$TMP_CRON"
 fi
 
+# --- 6b. tailscale serve pentru dashboard ----------------------------------
+# Publica panoul in tailnet la https://<host>.<tailnet>.ts.net/punte, exact ca
+# dashboard-ul lui echo de pe LXC 110 (/echo). Serviciul ramane legat de
+# 127.0.0.1: tailscaled e singurul care ajunge la el.
+DASH_PREFIX="$(grep -E '^DASHBOARD_PREFIX=' "$STATE_DIR/env" 2>/dev/null | cut -d= -f2- || true)"
+DASH_PREFIX="${DASH_PREFIX:-/punte}"
+DASH_PORT="$(grep -E '^DASHBOARD_PORT=' "$STATE_DIR/env" 2>/dev/null | cut -d= -f2- || true)"
+DASH_PORT="${DASH_PORT:-18790}"
+if ! command -v tailscale >/dev/null 2>&1; then
+    warn "tailscale lipseste — dashboard-ul ramane doar pe 127.0.0.1:$DASH_PORT (tunel SSH)"
+elif tailscale serve status 2>/dev/null | grep -q "$DASH_PREFIX proxy"; then
+    info "tailscale serve: $DASH_PREFIX exista deja"
+elif sudo -n tailscale serve --bg --set-path "$DASH_PREFIX" "http://127.0.0.1:$DASH_PORT" >/dev/null 2>&1; then
+    info "tailscale serve: https://$(tailscale status --json | python3 -c 'import json,sys;print(json.load(sys.stdin)["Self"]["DNSName"].rstrip("."))')$DASH_PREFIX"
+else
+    warn "nu am putut configura tailscale serve; ruleaza manual:"
+    warn "  sudo tailscale serve --bg --set-path $DASH_PREFIX http://127.0.0.1:$DASH_PORT"
+fi
+
 # --- 7. mail ---------------------------------------------------------------
 if command -v mail >/dev/null 2>&1; then
     info "binarul mail: $(command -v mail)"