Initial integration fixes

Cargo.toml

@@ -31,14 +31,14 @@ extended-description = """
 silod is a minimal Rust daemon for embedded Linux that listens to kernel
 uevents from the TS-SILO super-capacitor driver.  It applies user-specified
 charging limits, runs hook scripts on power events, and initiates a clean
-shutdown when capacity reaches a critical threshold.
+shutdown when power has failed and capacity is below a critical threshold.
 """
 
 section = "utils"
 priority = "optional"
 systemd-units = { enable = true, restart-after-upgrade = true }
 assets = [
-    ["target/release/silod", "usr/bin/", "755"],
+    ["target/release/silod", "usr/sbin/", "755"],
     ["silo.toml.example", "etc/silod/silo.toml", "644"],
 ]
 conf-files = ["/etc/silod/silo.toml"]

debian/service

@@ -4,7 +4,7 @@ After=multi-user.target
 
 [Service]
 Type=simple
-ExecStart=/usr/bin/silod
+ExecStart=/usr/sbin/silod
 Restart=always
 User=root
 Group=root

src/supply.rs

@@ -158,7 +158,7 @@ impl Supply {
             let res = self.sysfs_write_u32(key, value);
             self.log_attr_result(key, value, res);
         } else if let Some(startup_charge_current_pct) = cfg.startup_charge_current_pct {
-            let max_ma = self.sysfs_read_u32("charge_current_max")?;
+            let max_ma = self.sysfs_read_u32("constant_charge_current_max")?;
             let key = "startup_charge_current_ma";
             let value = (startup_charge_current_pct.saturating_mul(max_ma) / 100).clamp(0, max_ma);
             let res = self.sysfs_write_u32(key, value);