Implement basic system information discovery

- Add HostBasicDiscoveryService for SSH-based system discovery
- Execute hostname, /etc/os-release, uname -m, uname -r commands
- Parse OS information and map to standardized OS families
- Handle command failures gracefully with fallback methods
- Add SSHService for secure host connectivity
- Add REST API endpoints for triggering discovery operations
- Support both individual and bulk host discovery
- Update host database records with discovered information

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

Author: remyluslosius

.gitignore

@@ -400,9 +400,18 @@ $RECYCLE.BIN/
 .nfs*
 
 # ======================================
-# TEST AND TEMPORARY FILES
+# TEST AND DOCUMENTATION DIRECTORIES - NEVER COMMIT
 # ======================================
 
+# Project-specific test and documentation directories
+/test/
+/tests/
+/docs/
+backend/test/
+backend/tests/
+frontend/test/
+frontend/tests/
+
 # Test reports and artifacts
 test-reports/
 test_results/
@@ -416,7 +425,11 @@ frontend_test.log
 *test*.py
 *test*.sh
 *test*.md
-**/tests/**  # But keep files in proper test directories
+*test*.js
+*test*.cjs
+*test*.mjs
+*test*.ts
+*test*.tsx
 
 # Temporary files
 *.tmp

backend/alembic/versions/20250902_1600_006_add_host_compatibility_fields.py

@@ -0,0 +1,44 @@
+"""Add compatibility fields to Host and ScapContent models
+
+Revision ID: 006
+Revises: 005
+Create Date: 2025-09-02 16:00:00.000000
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers
+revision = '006'
+down_revision = '005'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    """Add compatibility fields to Host and ScapContent models"""
+    
+    # Add compatibility fields to hosts table
+    op.add_column('hosts', sa.Column('os_family', sa.String(50), nullable=True))
+    op.add_column('hosts', sa.Column('os_version', sa.String(100), nullable=True))
+    op.add_column('hosts', sa.Column('architecture', sa.String(50), nullable=True))
+    op.add_column('hosts', sa.Column('last_os_detection', sa.DateTime(), nullable=True))
+    
+    # Add compatibility fields to scap_content table
+    op.add_column('scap_content', sa.Column('os_family', sa.String(50), nullable=True))
+    op.add_column('scap_content', sa.Column('compliance_framework', sa.String(100), nullable=True))
+
+
+def downgrade() -> None:
+    """Remove compatibility fields from Host and ScapContent models"""
+    
+    # Remove fields from scap_content table
+    op.drop_column('scap_content', 'compliance_framework')
+    op.drop_column('scap_content', 'os_family')
+    
+    # Remove fields from hosts table
+    op.drop_column('hosts', 'last_os_detection')
+    op.drop_column('hosts', 'architecture')
+    op.drop_column('hosts', 'os_version')
+    op.drop_column('hosts', 'os_family')

backend/alembic/versions/20250902_1700_007_add_scap_content_os_version.py

@@ -0,0 +1,30 @@
+"""Add os_version field to ScapContent model
+
+Revision ID: 007
+Revises: 006
+Create Date: 2025-09-02 17:00:00.000000
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers
+revision = '007'
+down_revision = '006'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    """Add os_version field to ScapContent model"""
+    
+    # Add os_version field to scap_content table
+    op.add_column('scap_content', sa.Column('os_version', sa.String(100), nullable=True))
+
+
+def downgrade() -> None:
+    """Remove os_version field from ScapContent model"""
+    
+    # Remove os_version field from scap_content table
+    op.drop_column('scap_content', 'os_version')

backend/app/database.py

@@ -115,6 +115,10 @@ class Host(Base):
     ip_address = Column(String(45), nullable=False)  # IPv4 or IPv6
     display_name = Column(String(255), nullable=True)
     operating_system = Column(String(255), nullable=True)
+    os_family = Column(String(50), nullable=True)  # Added for compatibility validation
+    os_version = Column(String(100), nullable=True)  # Added for compatibility validation  
+    architecture = Column(String(50), nullable=True)  # Added for compatibility validation
+    last_os_detection = Column(DateTime, nullable=True)  # Added for OS detection tracking
     status = Column(String(50), default="offline", nullable=False)
     port = Column(Integer, default=22, nullable=False)
     username = Column(String(50), nullable=True)  # Made optional
@@ -142,6 +146,9 @@ class ScapContent(Base):
     profiles = Column(Text, nullable=True)  # JSON array of available profiles
     description = Column(Text, nullable=True)
     version = Column(String(50), nullable=True)
+    os_family = Column(String(50), nullable=True)  # Added for compatibility validation
+    os_version = Column(String(100), nullable=True)  # Added for OS version compatibility validation
+    compliance_framework = Column(String(100), nullable=True)  # Added for compliance tracking
     uploaded_by = Column(Integer, ForeignKey("users.id"), nullable=False)
     uploaded_at = Column(DateTime, default=datetime.utcnow, nullable=False)
     file_hash = Column(String(64), nullable=False)  # SHA-256 hash for integrity