feat: ja4-platform monorepo — 5 services unified, tests & RPM builds standardized

Services:
- ja4sentinel: TLS/JA4 fingerprint capture daemon (Go, libpcap)
- logcorrelator: JA4 log correlation engine (Go, ClickHouse)
- mod_reqin_log: Apache module (C, JSON request logging)
- bot_detector: ML bot detection pipeline (Python)
- dashboard: FastAPI/Streamlit analytics UI (Python)

Shared libraries:
- shared/go/ja4common: logger, config, shutdown, ipfilter (Go module)
- shared/python/ja4_common: ClickHouseClient, ClickHouseSettings (Python package)
- shared/clickhouse/: canonical SQL migrations (10 files)

Build & packaging:
- Unified 3-stage Dockerfile.package for Go RPMs (el8/el9/el10)
- go.work workspace linking sentinel, correlator, ja4common
- Makefile with test-all, build-all, rpm-* targets

Fixes applied:
- go.work: 1.21 → 1.24.6 (required by sentinel)
- correlator Dockerfiles: golang:1.21 → golang:1.24
- replace directives in go.mod for ja4common local path
- pyproject.toml: setuptools.backends → setuptools.build_meta
- Removed static libpcap linking (unavailable on Rocky 9)
- Fixed data races in output/writers_test.go (sync.Mutex + atomic.Int32)
- Rewrote corrupted test files (logger_test.go × 2)

Test coverage:
- correlator: 67.1% total (unixsocket 80.5%, config 91.7%, app 83.3%, multi 87.7%, stdout 100%)
- sentinel: all 10 packages pass (api, capture, config, fingerprint, ipfilter, logging, output, tlsparse)

Documentation:
- README.md + docs/ (architecture, development, 5 services, shared libs, DB schema & migrations)

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

services/mod-reqin-log/src/mod_reqin_log.h

@@ -0,0 +1,37 @@
+/*
+ * mod_reqin_log.h - Apache HTTPD module for logging HTTP requests as JSON to Unix socket
+ *
+ * Copyright (c) 2026. All rights reserved.
+ */
+
+#ifndef MOD_REQIN_LOG_H
+#define MOD_REQIN_LOG_H
+
+#include "httpd.h"
+#include "http_config.h"
+#include "apr_tables.h"
+
+/* Module name */
+#define MOD_REQIN_LOG_NAME "mod_reqin_log"
+
+/* Default configuration values */
+#define DEFAULT_MAX_HEADERS 25
+#define DEFAULT_MAX_HEADER_VALUE_LEN 256
+#define DEFAULT_RECONNECT_INTERVAL 10
+#define DEFAULT_ERROR_REPORT_INTERVAL 10
+
+/* Module configuration structure */
+typedef struct {
+    int enabled;
+    const char *socket_path;
+    apr_array_header_t *headers;
+    int max_headers;
+    int max_header_value_len;
+    int reconnect_interval;
+    int error_report_interval;
+} reqin_log_config_t;
+
+/* External module declaration */
+extern module AP_MODULE_DECLARE_DATA reqin_log_module;
+
+#endif /* MOD_REQIN_LOG_H */