feat(download): add Python SDK link for Linux users

- Add alternative for Linux/macOS Intel users who can't download the desktop app yet
- Direct them to reachy_mini GitHub repo to use the Python SDK directly
- Addresses feedback about Linux users not knowing they can interact with the daemon

src/pages/Download.jsx

@@ -620,7 +620,7 @@ export default function Download() {
                       fontSize: 17,
                     }}
                   >
-                    🚧 {currentPlatform?.name} support coming soon!
+                    🚧 {currentPlatform?.name} desktop app coming soon!
                   </Typography>
                 </Box>
 
@@ -630,13 +630,72 @@ export default function Download() {
                     color: 'rgba(255,255,255,0.5)', 
                     mt: 2,
                     fontSize: 14,
-                    maxWidth: 400,
+                    maxWidth: 500,
                     mx: 'auto',
                   }}
                 >
                   We're working hard to bring Reachy Mini Control to {currentPlatform?.name}. 
                   In the meantime, Windows and macOS (Apple Silicon) are fully supported!
                 </Typography>
+
+                {/* Alternative for Linux/advanced users - Python SDK */}
+                <Box
+                  sx={{
+                    mt: 3,
+                    p: 3,
+                    borderRadius: 2,
+                    background: 'rgba(16, 185, 129, 0.08)',
+                    border: '1px solid rgba(16, 185, 129, 0.25)',
+                    maxWidth: 520,
+                    mx: 'auto',
+                    textAlign: 'left',
+                  }}
+                >
+                  <Typography 
+                    variant="body2" 
+                    sx={{ 
+                      color: 'rgba(255,255,255,0.9)', 
+                      fontWeight: 600,
+                      mb: 1,
+                      fontSize: 14,
+                    }}
+                  >
+                    🐍 Looking to use the Python SDK directly?
+                  </Typography>
+                  <Typography 
+                    variant="body2" 
+                    sx={{ 
+                      color: 'rgba(255,255,255,0.6)', 
+                      fontSize: 13,
+                      lineHeight: 1.6,
+                      mb: 1.5,
+                    }}
+                  >
+                    {detectedPlatform?.includes('linux') 
+                      ? "Linux users can interact directly with their Reachy Mini using the Python SDK. Run the daemon locally and use the full API for custom applications."
+                      : "Advanced users can interact directly with their Reachy Mini using the Python SDK and daemon."}
+                  </Typography>
+                  <Button
+                    variant="outlined"
+                    size="small"
+                    href="https://github.com/pollen-robotics/reachy_mini"
+                    target="_blank"
+                    endIcon={<OpenInNewIcon sx={{ fontSize: 14 }} />}
+                    sx={{ 
+                      color: '#10b981',
+                      borderColor: 'rgba(16, 185, 129, 0.4)',
+                      fontWeight: 600,
+                      fontSize: 12,
+                      textTransform: 'none',
+                      '&:hover': { 
+                        borderColor: '#10b981',
+                        bgcolor: 'rgba(16, 185, 129, 0.1)',
+                      },
+                    }}
+                  >
+                    View reachy_mini on GitHub
+                  </Button>
+                </Box>
               </>
             )}