Add Cython to Python dependencies for model compilation

Add Cython==3.0.5 to python_ml/requirements.txt and update replit.md to reflect this change, resolving a compilation issue with the eif library.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 7a657272-55ba-4a79-9a2e-f1ed9bc7a528
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Event-Id: f24578fc-6be7-42c0-9a9c-5ffe13dacdbe
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/449cf7c4-c97a-45ae-8234-e5c5b8d6a84f/7a657272-55ba-4a79-9a2e-f1ed9bc7a528/2lUhxO2

attached_assets/Pasted--deployment-update-from-git-sh-db-AGGIO-1764002061583_1764002061583.txt

@@ -0,0 +1,101 @@
+ ./deployment/update_from_git.sh --db
+
+╔═══════════════════════════════════════════════╗
+║    AGGIORNAMENTO SISTEMA IDS DA GIT         ║
+╚═══════════════════════════════════════════════╝
+
+ Verifica configurazione git...
+
+ Backup configurazione locale...
+✅ .env salvato in .env.backup
+
+ Verifica modifiche locali...
+⚠  Ci sono modifiche locali non committate
+   Esegui 'git status' per vedere i dettagli
+Vuoi procedere comunque? (y/n) y
+   Salvo modifiche locali temporaneamente...
+No local changes to save
+
+ Download aggiornamenti da git.alfacom.it...
+remote: Enumerating objects: 21, done.
+remote: Counting objects: 100% (21/21), done.
+remote: Compressing objects: 100% (13/13), done.
+remote: Total 13 (delta 9), reused 0 (delta 0), pack-reused 0 (from 0)
+Unpacking objects: 100% (13/13), 3.37 KiB | 492.00 KiB/s, done.
+From https://git.alfacom.it/marco/ids.alfacom.it
+   3a945ec..152e226  main       -> origin/main
+ * [new tag]         v1.0.56    -> v1.0.56
+From https://git.alfacom.it/marco/ids.alfacom.it
+ * branch            main       -> FETCH_HEAD
+Updating 3a945ec..152e226
+Fast-forward
+ attached_assets/Pasted--deployment-update-from-git-sh-db-AGGIOR-1764001889941_1764001889941.txt | 90 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ database-schema/schema.sql                                                                      |  4 ++--
+ python_ml/requirements.txt                                                                      |  2 +-
+ replit.md                                                                                       |  5 +++--
+ version.json                                                                                    | 16 ++++++++--------
+ 5 files changed, 104 insertions(+), 13 deletions(-)
+ create mode 100644 attached_assets/Pasted--deployment-update-from-git-sh-db-AGGIOR-1764001889941_1764001889941.txt
+✅ Aggiornamenti scaricati con successo
+
+ Ripristino configurazione locale...
+✅ .env ripristinato
+
+ Aggiornamento dipendenze Node.js...
+
+up to date, audited 492 packages in 2s
+
+65 packages are looking for funding
+  run `npm fund` for details
+
+9 vulnerabilities (3 low, 5 moderate, 1 high)
+
+To address issues that do not require attention, run:
+  npm audit fix
+
+To address all issues (including breaking changes), run:
+  npm audit fix --force
+
+Run `npm audit` for details.
+✅ Dipendenze Node.js aggiornate
+
+📦 Aggiornamento dipendenze Python...
+Defaulting to user installation because normal site-packages is not writeable
+Requirement already satisfied: fastapi==0.104.1 in /home/ids/.local/lib/python3.11/site-packages (from -r requirements.txt (line 1)) (0.104.1)
+Requirement already satisfied: uvicorn==0.24.0 in /home/ids/.local/lib/python3.11/site-packages (from -r requirements.txt (line 2)) (0.24.0)
+Requirement already satisfied: pandas==2.1.3 in /home/ids/.local/lib/python3.11/site-packages (from -r requirements.txt (line 3)) (2.1.3)
+Requirement already satisfied: numpy==1.26.2 in /home/ids/.local/lib/python3.11/site-packages (from -r requirements.txt (line 4)) (1.26.2)
+Requirement already satisfied: scikit-learn==1.3.2 in /home/ids/.local/lib/python3.11/site-packages (from -r requirements.txt (line 5)) (1.3.2)
+Requirement already satisfied: psycopg2-binary==2.9.9 in /home/ids/.local/lib/python3.11/site-packages (from -r requirements.txt (line 6)) (2.9.9)
+Requirement already satisfied: python-dotenv==1.0.0 in /home/ids/.local/lib/python3.11/site-packages (from -r requirements.txt (line 7)) (1.0.0)
+Requirement already satisfied: pydantic==2.5.0 in /home/ids/.local/lib/python3.11/site-packages (from -r requirements.txt (line 8)) (2.5.0)
+Requirement already satisfied: httpx==0.25.1 in /home/ids/.local/lib/python3.11/site-packages (from -r requirements.txt (line 9)) (0.25.1)
+Collecting xgboost==2.0.3
+  Using cached xgboost-2.0.3-py3-none-manylinux2014_x86_64.whl (297.1 MB)
+Collecting joblib==1.3.2
+  Using cached joblib-1.3.2-py3-none-any.whl (302 kB)
+Collecting eif==2.0.2
+  Downloading eif-2.0.2.tar.gz (1.6 MB)
+     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 1.6/1.6 MB 2.8 MB/s eta 0:00:00
+  Preparing metadata (setup.py) ... error
+  error: subprocess-exited-with-error
+
+  × python setup.py egg_info did not run successfully.
+  │ exit code: 1
+  ╰─> [6 lines of output]
+      Traceback (most recent call last):
+        File "<string>", line 2, in <module>
+        File "<pip-setuptools-caller>", line 34, in <module>
+        File "/tmp/pip-install-7w_zhzdf/eif_d01f9f1e418b4512a5d7b4cf0e1128e2/setup.py", line 4, in <module>
+          from Cython.Distutils import build_ext
+      ModuleNotFoundError: No module named 'Cython'
+      [end of output]
+
+  note: This error originates from a subprocess, and is likely not a problem with pip.
+error: metadata-generation-failed
+
+× Encountered error while generating package metadata.
+╰─> See above for output.
+
+note: This is an issue with the package mentioned above, not pip.
+hint: See above for details.

python_ml/requirements.txt

@@ -7,6 +7,7 @@ psycopg2-binary==2.9.9
 python-dotenv==1.0.0
 pydantic==2.5.0
 httpx==0.25.1
+Cython==3.0.5
 xgboost==2.0.3
 joblib==1.3.2
 eif==2.0.2

replit.md

@@ -99,8 +99,10 @@ The IDS employs a React-based frontend for real-time monitoring, detection visua
   - `python_ml/dataset_loader.py` - CICIDS2017 loader con mappatura 80→25 features
   - `python_ml/validation_metrics.py` - Production-grade metrics calculator
   - `python_ml/train_hybrid.py` - CLI training script (test/train/validate)
-- **Dipendenze Nuove**: xgboost==2.0.3, joblib==1.3.2, eif==2.0.2
+- **Dipendenze Nuove**: Cython==3.0.5, xgboost==2.0.3, joblib==1.3.2, eif==2.0.2
 - **Backward Compatibility**: USE_HYBRID_DETECTOR env var (default=true)
 - **Target Metrics**: Precision≥90%, Recall≥80%, FPR≤5%, F1≥85%
 - **Deploy**: Vedere `deployment/CHECKLIST_ML_HYBRID.md`
-- **Fix Deploy (24 Nov 2025 - 19:00)**: Corretto `eif==2.0.0` → `eif==2.0.2` (versione 2.0.0 non disponibile su PyPI)
+- **Fix Deploy (24 Nov 2025 - 19:15)**: 
+  - Corretto `eif==2.0.0` → `eif==2.0.2` (versione 2.0.0 non disponibile)
+  - Aggiunto `Cython==3.0.5` come dipendenza (richiesto per compilare eif da source)