feat(5.19): auto-send toggle per cont + tinere manuala randuri (held)

Comutator accounts.auto_send_enabled per cont: Auto OFF (default) tine randurile
la ingestie (submissions.held=1), worker-ul (claim_one AND held=0) le sare pana la
eliberare umana (per rand/bulk/auto-release OFF->ON). Snapshot held prin chokepoint
unic held_for_account pe toate caile de ingestie (API, import, reresolve, reactivare).

- schema/migrare: coloana held + index partial idx_submissions_held; auto_send_enabled
- API: echo onest held+motiv (US-010), ruta /prezentari/{id}/trimite-acum
- web: toggle header, modal confirmare tipata, buton Trimite per rand + Trimite toate,
  banner coada tinuta imbatranita (L.142), contor "In asteptare (manual)"
- worker: expire_held (US-008, inchide gaura retentie PII), metrics held gauges
- ops: tools/carantina_held + runbook rollback (R4)

Nota review (/code-review high): re-snapshot held lipseste pe caile repune/corectie
(requeue_submission, post_corectie, bulk-fix) — de aliniat separat cu create_prezentari.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/web/templates/_status.html

@@ -14,10 +14,36 @@
   </div>
   {% endif %}
 
+  {# === US-007 (PRD 5.19): banner coada tinuta imbatranita — mitigare OBLIGATORIE pt. default OFF.
+     Cand exista randuri `queued AND held=1` mai vechi de held_aged_days, semnalul de conformitate
+     L.142 (declarare obligatorie). Derivat (zero stare noua), varsta pe created_at.
+     Prioritate bannere (D7 — un-singur-banner "notice", ca sa nu impinga contoarele sub fold pe
+     mobil): cont inactiv (sus) + strip RAR jos raman separate; intre notice-uri, held-aged >
+     trial (risc legal > notita trial) -> trial e suprimat cand held-aged e activ. #}
+  {% set _held_aged_activ = (held_aged_count|default(0) > 0) and account_active %}
+  {% if _held_aged_activ %}
+  <div id="banner-held-aged" role="alert"
+       style="margin-bottom:10px; padding:8px 12px; border-left:3px solid var(--warn);
+              background:color-mix(in srgb, var(--warn) 12%, var(--card)); border-radius:6px;
+              font-size:var(--fs-sm); display:flex; align-items:center; gap:8px; flex-wrap:wrap;">
+    <span><strong>{{ held_aged_count }}</strong>
+      {{ 'prezentare tinuta' if held_aged_count == 1 else 'prezentari tinute' }}
+      de peste {{ held_aged_days }} zile — declarare obligatorie (L.142).</span>
+    <button type="button"
+            hx-get="/_fragments/submissions?held=1"
+            hx-target="#submissions-wrap" hx-swap="innerHTML"
+            style="margin-left:auto; padding:2px 10px; font-size:var(--fs-xs); border-radius:99px;
+                   border:1px solid var(--warn); background:transparent; color:var(--warn);
+                   cursor:pointer; font-weight:600;">
+      Vezi tinute
+    </button>
+  </div>
+  {% endif %}
+
   {# US-006 (5.17) — Banner one-time trial->Gratuit (T-DES-1): afisat la prima incarcare
      dupa expirarea trial-ului. Discret, non-blocant; dismissibil via sessionStorage.
      Nu acopera stripul de sanatate (apare inainte de health strip, la acelasi nivel). #}
-  {% if trial_expirat_recent|default(false) %}
+  {% if trial_expirat_recent|default(false) and not _held_aged_activ %}
   <div id="banner-trial-expirat"
        role="status"
        style="margin-bottom:10px; padding:7px 12px;
@@ -83,10 +109,17 @@
       <div class="contor-label">Azi</div>
     </div>
 
-    {# In coada #}
+    {# In coada — contorul "In asteptare (manual)" se pliaza aici (US-006/D6): nu adaugam a 6-a
+       celula, ci o sub-linie amber cand exista randuri tinute (queued AND held=1). #}
     <div class="contor-card" style="flex:1; min-width:80px;">
       <div class="contor-cifra s-queued">{{ counts_queued }}</div>
       <div class="contor-label">In coada</div>
+      {% if held_manual_count|default(0) %}
+      <div class="contor-sub" style="font-size:var(--fs-xs); color:var(--warn); font-weight:600; margin-top:2px;"
+           title="Prezentari tinute manual — asteapta eliberarea ta">
+        {{ held_manual_count }} manual
+      </div>
+      {% endif %}
     </div>
 
     {# De corectat (rosu daca >0, muted la 0; link catre lista) #}
@@ -115,7 +148,7 @@
     </div>
     <div class="compact-item">
       <div class="compact-nr s-queued">{{ counts_queued }}</div>
-      <div class="compact-lbl">Coada</div>
+      <div class="compact-lbl">Coada{% if held_manual_count|default(0) %} <span style="color:var(--warn); font-weight:700;">·{{ held_manual_count }}m</span>{% endif %}</div>
     </div>
     <a class="compact-item" href="/" style="text-decoration:none; color:inherit;">
       <div class="compact-nr {{ 's-error' if blocate_total else 'muted' }}">{{ blocate_total }}</div>