Add network logging to Discord webhook for testing branch

- Add network_logging.py module with Discord webhook integration
- Log session start with unique session ID and mode (MOCK/PRODUCTION)
- Log all page navigations when clicking Next
- Log all user selections (disk, install mode, modules, user info)
- Log installation progress through each step
- Send install completion/failure logs
- Auto-flush logs every 2 seconds and immediately on critical events

TESTING BRANCH ONLY - Remove before merging to main

iridium_installer/backend/os_install.py

@@ -6,6 +6,15 @@ from contextlib import contextmanager
 
 logger = logging.getLogger(__name__)
 
+# Import network logging for critical operations
+from .network_logging import log_to_discord
+
+
+def log_os_install(operation, status="start", details=""):
+    log_to_discord(
+        "INFO", f"OSINSTALL_{operation}_{status}: {details}", module="os_install"
+    )
+
 
 class CommandResult:
     def __init__(self, stdout, stderr, returncode):
@@ -94,6 +103,7 @@ def install_minimal_os(mount_root, releasever="43"):
     Installs minimal Fedora packages to mount_root.
     """
     logger.info(f"Installing minimal Fedora {releasever} to {mount_root}...")
+    log_os_install("INSTALL", "start", f"Target: {mount_root}, Release: {releasever}")
 
     packages = [
         "basesystem",
@@ -125,6 +135,7 @@ def install_minimal_os(mount_root, releasever="43"):
         run_command(cmd)
 
     logger.info("Base system installation complete.")
+    log_os_install("INSTALL", "complete", f"Installed to {mount_root}")
 
 
 def configure_system(mount_root, partition_info):
@@ -132,6 +143,7 @@ def configure_system(mount_root, partition_info):
     Basic configuration: fstab and grub.
     """
     logger.info("Configuring system...")
+    log_os_install("CONFIGURE", "start", f"Configuring system in {mount_root}")
 
     # 1. Generate fstab
     def get_uuid(dev):
@@ -168,3 +180,4 @@ UUID={efi_uuid} /boot/efi vfat defaults 0 2
         run_command(chroot_cmd)
 
     logger.info("System configuration complete.")
+    log_os_install("CONFIGURE", "complete", "GRUB configured successfully")