chore: suppression des services obsolètes (sentinel, correlator, mod-reqin-log)

Remplacés par l'agent ja4ebpf (eBPF CO-RE). Nettoyage complet :

Supprimé :
- old/ (archive de l'ancienne architecture)
- services/correlator/ (logcorrelator Go)
- services/sentinel/ (capture pcap Go)
- services/mod-reqin-log/ (module Apache C)
- shared/go/ja4common/ (lib Go partagée — plus importée par ja4ebpf)
- tests/integration/platform/ (test correlator+sentinel+httpd)
- tests/integration/docker-compose.yml (compose ancienne archi)
- tests/integration/run-tests.sh (runner correlator/sentinel)
- tests/integration/verify_mvs.py (script orphelin)

Nettoyé :
- go.work : retire ./shared/go/ja4common
- services/ja4ebpf/go.mod : retire replace ja4common (jamais importé)
- services/ja4ebpf/Dockerfile* : retire les COPY ja4common inutiles
- Makefile : retire test-ja4common-python, test-integration*, targets obsolètes
- tests/integration/README.md : réécrit pour l'architecture ja4ebpf

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

Makefile

@@ -10,10 +10,8 @@ VERSION ?= $(shell git describe --tags --always 2>/dev/null || echo dev)
         build-ja4ebpf test-ja4ebpf rpm-ja4ebpf \
         build-bot-detector test-bot-detector \
         build-dashboard test-dashboard \
-        test-ja4common-python \
         test-all-stacks test-nginx test-nginx-varnish test-hitch-varnish test-apache \
         test-matrix \
-        test-integration test-integration-keep test-integration-down \
         reload-prod-logs init-stack import-prod-data init-and-import \
         purge-db
 
@@ -35,7 +33,6 @@ help: ## Affiche cette aide
 	@echo "    make test-ja4ebpf           Tests Go ja4ebpf"
 	@echo "    make test-bot-detector      Tests Python bot-detector"
 	@echo "    make test-dashboard         Tests Python dashboard"
-	@echo "    make test-ja4common-python  Tests Python ja4_common"
 	@echo ""
 	@echo "  Tests d'intégration (par stack)"
 	@echo "    make test-all-stacks        Toutes les stacks sur Rocky Linux 9"
@@ -66,7 +63,7 @@ help: ## Affiche cette aide
 build-all: build-ja4ebpf build-bot-detector build-dashboard
 	@echo "All services built."
 
-test-all: test-ja4ebpf test-bot-detector test-dashboard test-ja4common-python
+test-all: test-ja4ebpf test-bot-detector test-dashboard
 	@echo "All unit tests completed."
 
 rpm-all: rpm-ja4ebpf
@@ -134,15 +131,6 @@ test-dashboard:
 	  .
 	docker run --rm ja4-platform/dashboard-tests:latest
 
-# ── shared/python/ja4_common ─────────────────────────────────────────────────
-
-test-ja4common-python:
-	docker build \
-	  -f shared/python/ja4_common/Dockerfile.tests \
-	  -t ja4-platform/ja4common-python-tests:latest \
-	  shared/python/ja4_common/
-	docker run --rm ja4-platform/ja4common-python-tests:latest
-
 # ── Tests d'intégration par stack ────────────────────────────────────────────
 
 test-all-stacks: ## Toutes les stacks sur la distro par défaut (Rocky Linux 9)
@@ -167,21 +155,6 @@ test-matrix: ## Toutes stacks × el8 + el9 + el10
 	  $${MATRIX_STACKS:+--stacks=$${MATRIX_STACKS}} \
 	  $${MATRIX_DISTROS:+--distros=$${MATRIX_DISTROS}}
 
-# ── Compat : anciens targets d'intégration ───────────────────────────────────
-
-test-integration: ## Ancien target — alias vers test-all-stacks
-	$(MAKE) test-all-stacks
-
-test-integration-keep:
-	cd tests/integration && bash run-all-stacks.sh --no-down
-
-test-integration-down:
-	cd tests/integration && \
-	  for stack in apache nginx nginx-varnish hitch-varnish; do \
-	    [ -f "$$stack/docker-compose.yml" ] && \
-	      docker compose -f "$$stack/docker-compose.yml" down -v --remove-orphans 2>/dev/null || true; \
-	  done
-
 # ── Base de données ───────────────────────────────────────────────────────────
 
 reload-prod-logs: