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>

shared/python/ja4_common/ja4_common/__init__.py

@@ -0,0 +1,2 @@
+"""JA4 Common — shared utilities for the JA4 security suite."""
+__version__ = "0.1.0"

shared/python/ja4_common/ja4_common/clickhouse.py

@@ -0,0 +1,55 @@
+"""Unified singleton ClickHouse client for the JA4 security suite."""
+import clickhouse_connect
+from typing import Optional
+
+from .settings import settings
+
+
+class ClickHouseClient:
+    def __init__(self):
+        self._client: Optional[clickhouse_connect.driver.client.Client] = None
+
+    def connect(self) -> clickhouse_connect.driver.client.Client:
+        if self._client is None or not self._ping():
+            self._client = clickhouse_connect.get_client(
+                host=settings.CLICKHOUSE_HOST,
+                port=settings.CLICKHOUSE_PORT,
+                database=settings.CLICKHOUSE_DB,
+                user=settings.CLICKHOUSE_USER,
+                password=settings.CLICKHOUSE_PASSWORD,
+                connect_timeout=10,
+            )
+        return self._client
+
+    def _ping(self) -> bool:
+        try:
+            if self._client:
+                self._client.ping()
+                return True
+        except Exception:
+            pass
+        return False
+
+    def query(self, query: str, params: Optional[dict] = None):
+        return self.connect().query(query, params)
+
+    def command(self, query: str, params: Optional[dict] = None):
+        return self.connect().command(query, parameters=params)
+
+    def insert(self, table: str, data, column_names=None):
+        return self.connect().insert(table, data, column_names=column_names)
+
+    def close(self):
+        if self._client:
+            self._client.close()
+            self._client = None
+
+
+_client: Optional[ClickHouseClient] = None
+
+
+def get_client() -> ClickHouseClient:
+    global _client
+    if _client is None:
+        _client = ClickHouseClient()
+    return _client

shared/python/ja4_common/ja4_common/settings.py

@@ -0,0 +1,16 @@
+"""Unified ClickHouse settings using pydantic-settings."""
+from pydantic_settings import BaseSettings
+
+
+class ClickHouseSettings(BaseSettings):
+    CLICKHOUSE_HOST: str = "clickhouse"
+    CLICKHOUSE_PORT: int = 8123
+    CLICKHOUSE_DB: str = "mabase_prod"
+    CLICKHOUSE_USER: str = "admin"
+    CLICKHOUSE_PASSWORD: str = ""
+
+    model_config = {"env_file": ".env", "case_sensitive": True}
+
+
+# Singleton instance — re-instantiate in tests via ClickHouseSettings() directly
+settings = ClickHouseSettings()