feat(5.6): observabilitate + jurnal aplicatie + lifecycle trimiteri blocate

Implementeaza PRD 5.6 complet (14 stories, TDD). Doua axe:

Lifecycle trimiteri blocate (Val A):
- submissions_admin.py: sterge/repune scoped (404 cross-account inaintea lui 409 stare)
- reactivare dedup peste `error` cu CAS (WHERE id=? AND status='error'), creds noi in
  submissions + accounts.rar_creds_enc; worker invalideaza sesiunea RAR la creds proaspete
  (JWT 30h vechi nu mai trimite cu parola gresita); camp aditiv `reactivated:true`
- retentie randuri blocate 30z; purge_expired exclude queued/sending; purge_after curatat
  la reactivare/requeue
- API DELETE /v1/prezentari/{id} + /repune (200+JSON); UI butoane + bulk + banner actionabil

Observabilitate:
- app/observ.py log_event: dublu canal app_events (DB) + RotatingFileHandler per-proces,
  redactare creds/PII la scriere (redact_pii/vin_partial)
- request_id middleware + X-Request-ID pe toate raspunsurile
- handler global excepții -> 500 envelope 6-chei + request_id (traceback doar in jurnal)
- audit cerere API (api_prezentari/api_auth_esuat) + audit worker (rar_login/tranzitii)
- tab "Jurnal" filtrabil scoped (non-admin doar contul sau); retentie jurnal 90z
- rar_error expus in GET /v1/prezentari/{id} (recovery observabil)

pytest -q: 741 passed, 0 failed. Docs: PRD raport VERIFY, contract endpointuri noi, ROADMAP.

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

app/web/templates/_coada.html

@@ -30,14 +30,17 @@
           style="display:flex; gap:10px; flex-wrap:wrap; align-items:flex-end; margin-bottom:12px;">
       <div>
         <label for="f-status" class="muted" style="display:block; font-size:12px;">Stare</label>
+        {# US-014/T13: status_filtru (din deep-link ?tab=acasa&status=) pre-selecteaza
+           starea, iar submissions-wrap (hx-include #filtre-trimiteri) o incarca filtrat. #}
+        {% set sf = status_filtru | default('') %}
         <select id="f-status" name="status">
-          <option value="">toate</option>
-          <option value="queued">in asteptare</option>
-          <option value="sent">declarate la RAR</option>
-          <option value="needs_mapping">lipsa cod</option>
-          <option value="needs_data">date incomplete</option>
-          <option value="error">eroare</option>
-          <option value="sending">se trimite</option>
+          <option value="" {% if not sf %}selected{% endif %}>toate</option>
+          <option value="queued" {% if sf == 'queued' %}selected{% endif %}>in asteptare</option>
+          <option value="sent" {% if sf == 'sent' %}selected{% endif %}>declarate la RAR</option>
+          <option value="needs_mapping" {% if sf == 'needs_mapping' %}selected{% endif %}>lipsa cod</option>
+          <option value="needs_data" {% if sf == 'needs_data' %}selected{% endif %}>date incomplete</option>
+          <option value="error" {% if sf == 'error' %}selected{% endif %}>eroare</option>
+          <option value="sending" {% if sf == 'sending' %}selected{% endif %}>se trimite</option>
         </select>
       </div>
       <div>
@@ -57,7 +60,8 @@
 
     <!-- Poll aliniat la 15s ca status-ul (M5: nu doua timere perpetue pe pagina mereu deschisa) -->
     <div id="submissions-wrap"
-         hx-get="/_fragments/submissions" hx-trigger="load, every 15s"
+         hx-get="/_fragments/submissions"
+         hx-trigger="load, every 15s, trimiteriChanged from:body"
          hx-include="#filtre-trimiteri" hx-swap="innerHTML">
       <div class="empty">se incarca…</div>
     </div>