Commit Graph

21 Commits

Author SHA1 Message Date
14db3d9040 refactor: suppression dépendance User-Agent de la détection navigateur
Changements SQL :
- modern_browser_score : sec-ch-ua→100, Sec-Fetch→70 (plus de UA fallback)
- Ajout has_sec_ch_ua (UInt8) dans agg_header_fingerprint_1h et ml_all_scores
- mss_mobile_mismatch utilise has_sec_ch_ua au lieu de modern_browser_score
- header_order_confidence : PARTITION BY ja4 au lieu de first_ua
- sec_ch_mobile_mismatch : comparaison Client Hints interne (sans UA)
- Migration 03_remove_ua_browser_detection.sql

Changements Python :
- browser.py Axe 3 : Client Hints + Sec-Fetch + is_fake_navigation (PAS de UA)
- Pondération axes : ja4_known 0.30, tls_coherence 0.20 (signaux TLS renforcés)
- preprocessing.py : has_sec_ch_ua ajouté aux features et binary_features

Fichiers modifiés : 8 SQL/Python + 1 migration, 36/36 tests passent.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-09 23:06:01 +02:00
1fa6aec784 fix: SQL view ordering, purge-db flag, ctest directory
- 12_thesis_features.sql: move view_resource_cascade_1h before view_thesis_features_1h
- Makefile: purge-db uses --reset (not --clean)
- mod-reqin-log: ctest --test-dir build/tests

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-09 22:39:25 +02:00
8f5e771096 docs: réécriture complète de la documentation base de données en français
Réécriture des 3 fichiers de documentation de la base de données ClickHouse :

- docs/database/schema.md : couverture complète des 2 bases, 14+ tables,
  7 dictionnaires, 8 MVs, 8 vues, TTL, partitions, moteurs et colonnes
- docs/database/migrations.md : 13 fichiers SQL (ajout 10-12), prérequis
  mis à jour (ClickHouse 24.8+, 5 CSV), deploy_schema.sh, init-stack.sh,
  vérification et rollback complets
- shared/clickhouse/README.md : référence rapide des 13 fichiers,
  deploy_schema.sh, patron double-base, prérequis

Suppression des références obsolètes : dict_anubis_ua, dict_anubis_country,
anubis_ua_rules, anubis_country_rules.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-09 22:03:37 +02:00
9ea36ad22e feat(scripts): complete stack init + prod data import with date shift
Schema cleanup:
- Remove anubis_ua_rules table stub from 03_anubis_tables.sql
- Remove anubis_ua_rules from bot-detector deploy_schema.sql
- Remove UA seed step from clickhouse-init.sh (no more REGEXP_TREE dependency)
- Drop dict_anubis_ua, dict_anubis_country, anubis_ua_rules, anubis_country_rules

New scripts:
- scripts/init-stack.sh: comprehensive ClickHouse init (13 SQL files + migrations
  + validation + cleanup of obsolete tables). Supports --reset, --import-prod.
- scripts/import-prod-data.sh: imports pre-exported prod data (Native format)
  with dynamic date shift (max(time) → now). Supports --shift, --no-truncate.
- scripts/data/prod-export/: directory for cached Native format exports

Makefile targets: init-stack, import-prod-data, init-and-import

Tested: init-stack.sh passes all 13 SQL + 7 critical tables + 7 dicts
        import-prod-data.sh: 3M rows in ~37s with auto date shift
        Dashboard: 55 routes OK, bot-detector: 36/36 tests pass

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-09 21:40:05 +02:00
8180f4af04 refactor(anubis): simplify to IP/CIDR + ASN only, remove UA and Country rules
- Remove UA regex extraction (extract_ua_regex, _extract_ua_from_all/any)
- Remove Country rule collection from parse_bot_policies_inline
- Simplify fetch_rules.py: collect_all_rules returns (ip_rules, asn_rules)
- Remove insert_ua_rules and insert_country_rules functions
- reload_dicts now only reloads dict_anubis_ip + dict_anubis_asn
- Simplify CASE blocks in 04_mv_http_logs.sql, 07_ai_features_view.sql,
  view_ai_features_anubis.sql, mv_http_logs.sql: IP > ASN (was 5-level
  UA+IP > UA > IP > ASN > Country cascade)
- Remove dict_anubis_country + dict_anubis_ua from 03_anubis_tables.sql
  (UA table kept as stub for REGEXP_TREE catch-all compatibility)
- Remove anubis_country_rules table from schema
- Remove Anubis UA and Country tabs from dashboard reflists page
- Remove anubis_ua_rules/country_rules from API reflist queries
- deploy_schema.sql simplified from 339 to 122 lines
- 764 lines removed across 9 files

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-09 15:25:33 +02:00
039086a0b3 feat: nouvelles techniques de détection et page tactiques SOC
SQL:
- Ajout 5 colonnes d'agrégation (count_xff, count_unusual_ct,
  count_non_std_port, count_login_post, sec_ch_mobile_mismatch)
- Exposition de 5 features calculées dans view_ai_features_1h
- Migration ALTER TABLE pour déploiements existants

Bot-detector:
- 7 nouvelles features ML (has_xff, unusual_content_type_ratio,
  non_standard_port_ratio, login_post_concentration,
  sec_ch_mobile_mismatch, true_window_size, window_mss_ratio)
- Propagation campaign_id vers ml_all_scores (était toujours -1)
- Escalade campagne : HIGH→CRITICAL si cluster ≥5 membres

Dashboard:
- Page Tactiques SOC : brute-force, rotation JA4, récurrence,
  alertes temps réel — 4 KPIs + 4 panneaux + infobulles doc
- Ajout fmtDate() helper global
- Navigation sidebar mise à jour

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-09 14:29:18 +02:00
db306fb9da fix: P0 audit bugs — bot-detector + dashboard + SQL
Bot-detector:
- B1.1: campaign_id and raw_anomaly_score now inserted into ml_detected_anomalies
- B1.4/B1.5: log_decision argument order fixed (cycle_id, name)
- B1.7: AE broadcast error — model now returns features list, scoring
  uses model's features instead of current cycle's (prevents dim mismatch)
- B1.8: Anubis ALLOW bots now get bot_name from anubis_bot_name

Dashboard:
- C1.1: XSS in ip_detail.html — {{ ip | tojson }} instead of raw string
- C1.2: Stored XSS via innerHTML — added escapeHtml() helper, all user-facing
  formatters (fmtIP, fmtASN, fmtCountry, fmtJA4, fmtBotName, fmtLabel) sanitized
- C2.1: status filter now correctly filters http_version column
- C2.2: heatmap toDayOfWeek() - 1 for 0-indexed JS days

SQL:
- B1.3: view_ip_recurrence worst_score uses max() not min() (0=normal, 1=anomal)
- B1.6: view_resource_cascade_1h joined into view_thesis_features_1h (§5.4)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-08 23:33:00 +02:00
98289ccf04 fix: ASN dictionary pipeline + verbose bot-detector logging
- Fix dict_iplocate_asn: remove non-existent org/domain columns (4→4 cols)
- Add CSV header to iplocate-ip-to-asn.csv (CSVWithNames format)
- Replace org/domain dictGet calls with empty string literals in MV
- Full 714K CIDR stub for complete ASN resolution in tests
- Add header generation to generate_asn_data.py
- Verbose bot-detector stdout: data summary, triage breakdown, model
  training details, scoring stats, browser classification, boxed results
- Fix IPv6 filter in traffic seeder (_ips_from_cidrs)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-08 17:43:55 +02:00
9a48fb9d29 feat: LEGITIMATE_BROWSER classification from JA4 + behavioral consistency
Add browser legitimacy classification (A9) to the bot detection pipeline:

- New features: is_known_browser (binary) and browser_consistency_score [0..5]
  combining 5 signals: JA4 browser match, modern_browser_score, Accept-Language,
  cookies, Sec-Fetch-* presence
- Post-scoring: sessions with known browser JA4 + consistency >= 4/5 + NORMAL/LOW
  threat level are reclassified as LEGITIMATE_BROWSER
- Spoofing detection: inconsistent behavior (known JA4 but low consistency) stays
  in normal anomaly scoring — prevents evasion via JA4 spoofing
- XGBoost treats LEGITIMATE_BROWSER as non-threat (negative label)
- ClickHouse: browser_family column added to ml_detected_anomalies and ml_all_scores
- Dashboard: browser_family filter/sort on detections and scores endpoints,
  legitimate_browsers count and browser_stats in overview
- 6 new unit tests covering classification threshold, spoofing, exclusion logic

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-08 15:46:22 +02:00
7d09c614c3 feat: browser JA4 detection, Anubis bot rules, worldwide ASN data
- Add generate_browser_ja4.py: 1,186 browser JA4 fingerprints from FoxIO + ja4db.com
  covering 11 families (Chromium, Firefox, Safari, Edge, Tor, Opera, Vivaldi...)
- Rewrite generate_bot_ip.py: Anubis YAML rules (Google, Bing, Apple, DuckDuck,
  OpenAI, Perplexity bots) + Tor exit nodes + cloud scanner IPs (3,555 entries)
- Rewrite generate_asn_data.py: worldwide iptoasn.com data (78,049 ASNs, 714K CIDRs)
- Add dict_browser_ja4 ClickHouse dictionary + browser_family in AI features views
- Add /api/browsers dashboard endpoint
- Fix CSV quoting for fields containing commas (User-Agent strings)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-08 15:27:37 +02:00
b735bab5a5 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>
2026-04-08 03:21:05 +02:00
8d58f2b932 feat(bot-detector): add XGBoost supervised third voice (#10)
Triple-voice ensemble architecture:
- EIF (non-supervisé, anomalies zero-day)
- Autoencoder (non-supervisé, corrélations non-linéaires)
- XGBoost (supervisé, patterns connus + feedback SOC)

XGBoost implementation:
- Trained on historical ml_all_scores labels (NORMAL=0, HIGH/CRITICAL/DENY/KNOWN=1)
- Weekly retraining (XGB_RETRAIN_INTERVAL_H=168), min 100 labels required
- Score = predict_proba, combined via meta-learner: (1-β)*(EIF+AE) + β*xgb_prob
- Configurable: XGB_WEIGHT (β=0.20), XGB_MIN_LABELS, XGB_RETRAIN_INTERVAL_HOURS
- Graceful fallback: if xgboost unavailable or labels insufficient, EIF+AE only
- ClickHouse: xgb_prob column added to ml_all_scores
- Tests: 4 new tests (availability, train/predict, meta-learner, save/load)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-08 02:45:57 +02:00
57cf6c3828 feat(bot-detector): add parallel Autoencoder scorer (#9)
- TrafficAutoEncoder class: symmetric AE (n→64→32→16→32→64→n) with BatchNorm+ReLU
- Trained alongside EIF on human_baseline, saved/loaded with model versioning
- Score = per-sample MSE reconstruction error, combined with EIF via AE_WEIGHT (α=0.30)
- AE latent space (16-dim) used for HDBSCAN clustering instead of raw features
- Configurable: AE_WEIGHT, AE_EPOCHS, AE_LATENT_DIM, AE_LEARNING_RATE
- Graceful fallback: if torch unavailable or AE fails, EIF-only scoring continues
- ClickHouse: ae_recon_error column added to ml_all_scores
- Tests: 5 new tests (AE train/score, encode latent, state dict save/load, weight combination)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-08 02:40:39 +02:00
f6e2d3c0ca feat(bot-detector): implement 8 state-of-art improvements
- EIF: Extended Isolation Forest via isotree (fallback to sklearn IF)
- Benford's Law deviation feature on inter-request timing
- Lag-1 autocorrelation feature for cadence analysis
- Validation gate: reject model if val_anomaly_rate > 20%
- Feature pruning: remove variance < 1e-6 features before training
- Quantile drift: replace N(μ,σ) synthetic with quantile interpolation
- Thread safety: Lock for _service_healthy/_consecutive_failures
- Score normalization: inverted to [0,1] where 1=most anomalous

SQL: add lag1_autocorrelation + benford_deviation to view_thesis_features_1h
Tests: 10 new test functions covering all improvements
Integration: verify_mvs.py checks new thesis feature columns

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-08 02:31:26 +02:00
6d02f21c1e feat: implement thesis §5 advanced detection techniques as ClickHouse MVs
New aggregation tables + materialized views:
- agg_path_sequences_1h + MV (§5.1 Path Sequence Entropy)
- agg_request_timing_1h + MV (§5.3 Request Cadence Fingerprint)
- agg_ip_behavior_1h + MV (§5.5 JA4 Drift + §5.8 Cross-Domain)
- agg_resource_cascade_1h + MV (§5.4 Resource Dependency Tree)

New analytical views:
- view_thesis_features_1h: unified view exposing all computable features
  (path_transition_entropy, cadence_cv, burst_ratio, pause_ratio,
   ja4_drift_ratio, host_diversity, host_sweep_speed,
   host_coverage_uniformity)
- view_resource_cascade_1h: root_to_first_asset_delay, asset_load_stddev

Documented future techniques (not feasible as MV):
- §5.2 Bipartite Fleet Graph (needs Python networkx)
- §5.6 DNS Shadow Analysis (needs sentinel UDP/53 extension)
- §5.7 Compression Ratio Invariant (needs mod_reqin_log extension)

Updated: deploy_schema.sh, verify_mvs.py (sections 8-10)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-08 01:42:52 +02:00
ecceb04174 perf(clickhouse): P3 — view_ip_recurrence avec filtre TTL + supprimer FINAL
view_ip_recurrence :
  Ajout de WHERE detected_at >= now() - INTERVAL 30 DAY
  → Avec PARTITION BY (P1), ClickHouse élagage les partitions hors de cette
    plage avant même de lire les données. La vue ne scanne que les partitions
    actives (au lieu des 30 partitions journalières complètes).
  → ORDER BY (src_ip) garantit que le GROUP BY src_ip lit des données
    contiguës (aucune réorganisation mémoire).

rotation.py — supprimer FINAL sur ml_detected_anomalies :
  FINAL force une déduplication complète du ReplacingMergeTree en mémoire
  (équivalent à un DISTINCT sur toute la table) — une des opérations les plus
  coûteuses dans ClickHouse.
  Fix : remplacer le sous-SELECT FINAL par view_ip_recurrence (déjà aggrégée
  par src_ip, retourne recurrence directement sans FINAL).

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-07 22:33:29 +02:00
14323f7b05 perf(clickhouse): P10 — créer les 4 vues métier manquantes + corriger préfixes DB
Bug de production : view_form_bruteforce_detected, view_host_ip_ja4_rotation,
view_dashboard_entities, view_dashboard_user_agents étaient référencées dans
13 endpoints du dashboard mais n'existaient nulle part dans le schéma.
Tous ces endpoints retournaient HTTP 500 en production.

shared/clickhouse/11_views.sql (nouveau) :

  view_form_bruteforce_detected
    Source : agg_host_ip_ja4_1h (24h)
    Logique : GROUP BY (src_ip, host) HAVING count_post >= 10
    Usage   : bruteforce.py (3 endpoints), investigation_summary.py

  view_host_ip_ja4_rotation
    Source : agg_host_ip_ja4_1h (24h)
    Logique : uniqExact(ja4) par src_ip, HAVING >= 2 (rotation de fingerprint)
    Usage   : rotation.py (3 endpoints), investigation_summary.py

  view_dashboard_entities
    Source : http_logs (7 jours), UNION ALL 5 branches (ip/ja4/country/asn/host)
    Colonnes : entity_type, entity_value, src_ip, ja4, host, log_date,
               client_headers Array(String), asns Array, countries Array,
               user_agents Array
    Usage   : entities.py (5 endpoints), clustering.py

  view_dashboard_user_agents
    Source : http_logs (7 jours), GROUP BY (src_ip, ja4, hour)
    Colonnes : src_ip, ja4, hour, log_date, user_agents Array(String), requests
    Usage   : variability.py (4 endpoints), fingerprints.py (5 endpoints)
              attributes.py (2 endpoints)

deploy_schema.sh : ajout de 10_perf_indexes.sql et 11_views.sql dans la liste

routes/variability.py + fingerprints.py :
  Correction de 9 requêtes utilisant view_dashboard_user_agents sans préfixe
  de base de données → remplacé par {settings.CLICKHOUSE_DB_PROCESSING}.view_*

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-07 22:30:09 +02:00
f4ffe3410a perf(clickhouse): P1 — partition + skipping indexes sur ml_detected_anomalies, http_logs, agg_host_ip_ja4_1h
Problème : toutes les requêtes du dashboard WHERE detected_at >= now() - INTERVAL N
faisaient un full scan car ml_detected_anomalies avait ORDER BY (src_ip) sans
partition ni index temporel.

Changements :
- 06_ml_tables.sql :
  * ml_detected_anomalies : PARTITION BY toYYYYMMDD(detected_at)
    → élagage de partitions journalières sur toutes les requêtes temporelles
  * INDEX idx_detected_at (minmax) → skip des granules hors plage
  * INDEX idx_threat_level set(8) → skip pour countIf(threat_level = ...)
  * INDEX idx_bot_name bloom_filter → skip pour bot_name != ''
  * ttl_only_drop_parts = 1 → TTL par suppression de partition entière
  * ml_all_scores : même traitement (PARTITION BY + 2 indexes)

- 04_mv_http_logs.sql :
  * http_logs : INDEX idx_src_ip bloom_filter(0.01)
    → les requêtes WHERE src_ip = X (analysis.py, variability.py) sautent
    ~90% des granules sans scanner toute la plage temporelle
  * INDEX idx_ja4 bloom_filter(0.01) → idem pour filtres JA4

- 05_aggregation_tables.sql :
  * agg_host_ip_ja4_1h : PROJECTION proj_by_ip ORDER BY (src_ip, window_start, ...)
    → investigation_summary.py et rotation.py (WHERE src_ip = X) utilisent
    automatiquement la projection au lieu de scanner tous les window_start

- 10_perf_indexes.sql (nouveau) :
  * Migration ALTER TABLE pour instances existantes
  * ADD INDEX + MATERIALIZE INDEX pour les 4 tables
  * ADD PROJECTION + MATERIALIZE PROJECTION pour agg_host_ip_ja4_1h
  * Note : PARTITION BY sur table existante nécessite recréation (documenté)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-07 22:28:04 +02:00
d4e7e674d8 feat: full-stack Docker Compose integration tests
- 4-container stack: ClickHouse, platform (Rocky 9), bot-detector, dashboard
- Platform builds sentinel on Rocky (CGO+libpcap native), correlator static
- mod-reqin-log compiled with apxs on Rocky (matching RPM build target)
- ClickHouse init script patches credentials for test env (sed-based)
- 8-phase test runner: schema, traffic gen, pipeline, dashboard API, bot-detector, sentinel
- All 13 checks pass, 3 non-blocking warnings (empty dicts, log paths)

SQL schema fixes discovered during integration:
- 02_dictionaries: IPv6CIDR → String (not a valid ClickHouse type)
- 03_anubis_tables: dict_anubis_ua missing has_ip/rule_id/category attrs
- 03_anubis_tables: dict_anubis_country FLAT() → COMPLEX_KEY_HASHED() (String key)
- 09_audit_table: CODEC before DEFAULT → DEFAULT before CODEC

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-07 20:33:25 +02:00
9f3e0621e5 feat: split ClickHouse into dual configurable databases (ja4_logs / ja4_processing)
Architecture:
- ja4_logs: raw log ingestion (http_logs_raw, http_logs, mv_http_logs)
- ja4_processing: analytics, aggregation, ML, dictionaries, audit

Configuration (env vars):
- CLICKHOUSE_DB_LOGS (default: ja4_logs)
- CLICKHOUSE_DB_PROCESSING (default: ja4_processing)

Changes:
- SQL migrations (10 files): all mabase_prod refs → ja4_logs or ja4_processing
  with correct cross-database references (MVs, views, dicts)
- deploy_schema.sh: substitutes DB names from env vars at deploy time
- Python shared settings: added CLICKHOUSE_DB_LOGS + CLICKHOUSE_DB_PROCESSING
- Dashboard routes (19 files): replaced ~80 hardcoded mabase_prod refs
  with settings.CLICKHOUSE_DB_LOGS / settings.CLICKHOUSE_DB_PROCESSING
- Bot-detector: DB → CLICKHOUSE_DB_PROCESSING, fetch_rules.py configurable
- Correlator: DSN example updated to ja4_logs
- Docker-compose + .env files: new env vars with defaults
- All documentation updated (14 markdown files)

All tests pass: sentinel 10/10, correlator 67.1%, bot-detector 11, dashboard 20, ja4_common 18

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-07 19:10:35 +02:00
d469e39da7 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>
2026-04-07 16:42:59 +02:00