tidy up documentation for alpha release

docs/alpha/srs/SRS-03-iSCSI-Management.md

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+# SRS-03: iSCSI Management
+
+## 1. Overview
+iSCSI Management module provides configuration and management of iSCSI targets, LUNs, initiators, and portals using SCST.
+
+## 2. Functional Requirements
+
+### 2.1 Target Management
+**FR-ISCSI-001**: System shall allow users to create iSCSI targets
+- **Input**: Target name, alias
+- **Output**: Created target with ID
+- **Validation**: Target name uniqueness, valid IQN format
+
+**FR-ISCSI-002**: System shall allow users to list all iSCSI targets
+- **Output**: Target list with status, LUN count, initiator count
+
+**FR-ISCSI-003**: System shall allow users to view target details
+- **Output**: Target configuration, LUNs, initiators, status
+
+**FR-ISCSI-004**: System shall allow users to delete iSCSI targets
+- **Validation**: Target must not be in use
+
+**FR-ISCSI-005**: System shall allow users to enable/disable targets
+- **Input**: Target ID, enabled flag
+
+### 2.2 LUN Management
+**FR-ISCSI-006**: System shall allow users to add LUNs to targets
+- **Input**: Target ID, device path, LUN number
+- **Validation**: Device exists, LUN number available
+
+**FR-ISCSI-007**: System shall allow users to remove LUNs from targets
+- **Input**: Target ID, LUN ID
+
+**FR-ISCSI-008**: System shall display LUN information
+- **Output**: LUN number, device, size, status
+
+### 2.3 Initiator Management
+**FR-ISCSI-009**: System shall allow users to add initiators to targets
+- **Input**: Target ID, initiator IQN
+- **Validation**: Valid IQN format
+
+**FR-ISCSI-010**: System shall allow users to remove initiators from targets
+- **Input**: Target ID, initiator ID
+
+**FR-ISCSI-011**: System shall allow users to list all initiators
+- **Output**: Initiator list with associated targets
+
+**FR-ISCSI-012**: System shall allow users to create initiator groups
+- **Input**: Group name, initiator list
+- **Output**: Created group with ID
+
+**FR-ISCSI-013**: System shall allow users to manage initiator groups
+- **Actions**: Create, update, delete, add/remove initiators
+
+### 2.4 Portal Management
+**FR-ISCSI-014**: System shall allow users to create portals
+- **Input**: IP address, port
+- **Output**: Created portal with ID
+
+**FR-ISCSI-015**: System shall allow users to list portals
+- **Output**: Portal list with IP, port, status
+
+**FR-ISCSI-016**: System shall allow users to update portals
+- **Input**: Portal ID, updated configuration
+
+**FR-ISCSI-017**: System shall allow users to delete portals
+- **Input**: Portal ID
+
+### 2.5 Extent Management
+**FR-ISCSI-018**: System shall allow users to create extents
+- **Input**: Device path, size, type
+- **Output**: Created extent
+
+**FR-ISCSI-019**: System shall allow users to list extents
+- **Output**: Extent list with device, size, type
+
+**FR-ISCSI-020**: System shall allow users to delete extents
+- **Input**: Extent device
+
+### 2.6 Configuration Management
+**FR-ISCSI-021**: System shall allow users to view SCST configuration file
+- **Output**: Current SCST configuration
+
+**FR-ISCSI-022**: System shall allow users to update SCST configuration file
+- **Input**: Configuration content
+- **Validation**: Valid SCST configuration format
+
+**FR-ISCSI-023**: System shall allow users to apply SCST configuration
+- **Action**: Reload SCST configuration
+- **Side Effect**: Targets may be restarted
+
+## 3. User Interface Requirements
+
+### 3.1 Target List View
+- Target cards with status indicators
+- Quick actions (enable/disable, delete)
+- Filter and search functionality
+
+### 3.2 Target Detail View
+- Overview tab (target info, status)
+- LUNs tab (LUN list, add/remove)
+- Initiators tab (initiator list, add/remove)
+- Settings tab (target configuration)
+
+### 3.3 Create Target Wizard
+- Target name input
+- Alias input
+- Initial LUN assignment (optional)
+- Initial initiator assignment (optional)
+
+## 4. API Endpoints
+
+```
+GET    /api/v1/scst/targets
+GET    /api/v1/scst/targets/:id
+POST   /api/v1/scst/targets
+DELETE /api/v1/scst/targets/:id
+POST   /api/v1/scst/targets/:id/enable
+POST   /api/v1/scst/targets/:id/disable
+
+POST   /api/v1/scst/targets/:id/luns
+DELETE /api/v1/scst/targets/:id/luns/:lunId
+
+POST   /api/v1/scst/targets/:id/initiators
+GET    /api/v1/scst/initiators
+GET    /api/v1/scst/initiators/:id
+DELETE /api/v1/scst/initiators/:id
+
+GET    /api/v1/scst/initiator-groups
+GET    /api/v1/scst/initiator-groups/:id
+POST   /api/v1/scst/initiator-groups
+PUT    /api/v1/scst/initiator-groups/:id
+DELETE /api/v1/scst/initiator-groups/:id
+POST   /api/v1/scst/initiator-groups/:id/initiators
+
+GET    /api/v1/scst/portals
+GET    /api/v1/scst/portals/:id
+POST   /api/v1/scst/portals
+PUT    /api/v1/scst/portals/:id
+DELETE /api/v1/scst/portals/:id
+
+GET    /api/v1/scst/extents
+POST   /api/v1/scst/extents
+DELETE /api/v1/scst/extents/:device
+
+GET    /api/v1/scst/config/file
+PUT    /api/v1/scst/config/file
+POST   /api/v1/scst/config/apply
+
+GET    /api/v1/scst/handlers
+```
+
+## 5. Permissions
+- **iscsi:read**: Required for viewing targets, initiators, portals
+- **iscsi:write**: Required for creating, updating, deleting
+
+## 6. Error Handling
+- Invalid IQN format
+- Target name already exists
+- Device not available
+- SCST configuration errors
+- Insufficient permissions
+