feat(dashboard): rebuild SOC dashboard + fix ClickHouse SQL

Complete rewrite of the SOC dashboard using FastAPI + Jinja2 + htmx + Chart.js + Tailwind CSS.
Replaces the old React/Vite frontend with server-rendered templates.

Dashboard pages:
- Overview: KPIs, timeline chart, threat distribution, top IPs
- Detections: paginated/filterable anomaly table
- Scores: ml_all_scores with AE error & XGB prob columns
- Traffic: HTTP logs with method/host filters
- IP Investigation: full deep-dive (scores, features, HTTP logs, classify)
- Classification: SOC feedback form + history
- Features: AI + thesis feature stats
- Models: scoring stats + model metadata

API: 9 JSON endpoints with parameterized queries, sort whitelists

SQL fixes:
- 05_aggregation_tables: add deduplicate_merge_projection_mode
- 11_views: fix nested aggregate (argMax inside sum)
- 12_thesis_features: remove invalid 'let' bindings, fix groupArrayIf type

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

shared/clickhouse/11_views.sql

@@ -28,17 +28,20 @@ CREATE OR REPLACE VIEW ja4_processing.view_form_bruteforce_detected AS
 SELECT
     src_ip,
     host,
-    -- JA4 le plus fréquent pour ce couple IP+hôte
-    argMax(any(tcp_fp_raw), sum(hits))       AS ja4,
-    -- Nombre total de requêtes (toutes méthodes)
-    sum(hits)                                AS hits,
-    -- Proxy pour les soumissions de formulaire : nombre de requêtes POST
-    -- (count_post = SimpleAggregateFunction(sum) dans agg_host_ip_ja4_1h)
-    sum(count_post)                          AS query_params_count
-FROM ja4_processing.agg_host_ip_ja4_1h
-WHERE window_start >= now() - INTERVAL 24 HOUR
+    -- JA4 avec le plus de hits pour ce couple IP+hôte (from subquery)
+    argMax(ja4, ja4_hits)                    AS ja4,
+    sum(ja4_hits)                            AS hits,
+    sum(ja4_posts)                           AS query_params_count
+FROM (
+    SELECT
+        src_ip, host, ja4,
+        sum(hits) AS ja4_hits,
+        sum(count_post) AS ja4_posts
+    FROM ja4_processing.agg_host_ip_ja4_1h
+    WHERE window_start >= now() - INTERVAL 24 HOUR
+    GROUP BY src_ip, host, ja4
+) sub
 GROUP BY src_ip, host
--- Seuil : au moins 10 POST pour qualifier d'activité brute-force
 HAVING query_params_count >= 10;