fix(config): replace panics in parse_proxy_config with proper Result errors

parse_proxy_config was using expect()/unwrap()/panic!() which would
crash the process on malformed proxy config strings instead of
returning a descriptive error. Now returns ConfigError::ProxyConfigInvalid
with the specific issue (bad scheme, bad address). Added tests for
invalid scheme, invalid address, and end-to-end from_serve_options.

crates/alknet-core/src/config/static_config.rs

@@ -57,7 +57,7 @@ impl StaticConfig {
 
         let dynamic = crate::config::DynamicConfig::new(auth_policy);
 
-        let proxy_config = parse_proxy_config(opts.proxy.as_deref());
+        let proxy_config = parse_proxy_config(opts.proxy.as_deref())?;
 
         let listeners = if let Some(listeners) = opts.listeners {
             listeners
@@ -100,31 +100,41 @@ impl StaticConfig {
     }
 }
 
-fn parse_proxy_config(proxy: Option<&str>) -> Option<ProxyConfig> {
-    proxy.map(|url| {
-        if url.starts_with("socks5://") {
-            let addr: SocketAddr = url
-                .strip_prefix("socks5://")
-                .unwrap()
-                .parse()
-                .expect("invalid socks5 proxy address");
-            ProxyConfig {
+fn parse_proxy_config(
+    proxy: Option<&str>,
+) -> Result<Option<ProxyConfig>, crate::error::ConfigError> {
+    match proxy {
+        None => Ok(None),
+        Some(url) => {
+            if let Some(rest) = url.strip_prefix("socks5://") {
+                let addr: SocketAddr = rest.parse().map_err(|e| {
+                    crate::error::ConfigError::ProxyConfigInvalid {
+                        message: format!("invalid socks5 proxy address '{}': {}", rest, e),
+                    }
+                })?;
+                Ok(Some(ProxyConfig {
                     mode: ProxyMode::Socks5(addr),
+                }))
+            } else if let Some(rest) = url.strip_prefix("http://") {
+                let addr: SocketAddr = rest.parse().map_err(|e| {
+                    crate::error::ConfigError::ProxyConfigInvalid {
+                        message: format!(
+                            "invalid http connect proxy address '{}': {}",
+                            rest, e
+                        ),
                     }
-        } else if url.starts_with("http://") {
-            let addr: SocketAddr = url
-                .strip_prefix("http://")
-                .unwrap()
-                .parse()
-                .expect("invalid http connect proxy address");
-            ProxyConfig {
+                })?;
+                Ok(Some(ProxyConfig {
                     mode: ProxyMode::HttpConnect(addr),
-            }
+                }))
             } else {
-            panic!("unsupported proxy URL scheme: {url}");
-        }
+                Err(crate::error::ConfigError::ProxyConfigInvalid {
+                    message: format!("unsupported proxy URL scheme: {}", url),
                 })
             }
+        }
+    }
+}
 
 #[cfg(test)]
 mod tests {
@@ -147,7 +157,7 @@ mod tests {
 
     #[test]
     fn parse_proxy_config_socks5() {
-        let config = parse_proxy_config(Some("socks5://127.0.0.1:9050"));
+        let config = parse_proxy_config(Some("socks5://127.0.0.1:9050")).unwrap();
         assert!(config.is_some());
         match config.unwrap().mode {
             ProxyMode::Socks5(addr) => {
@@ -159,7 +169,7 @@ mod tests {
 
     #[test]
     fn parse_proxy_config_http() {
-        let config = parse_proxy_config(Some("http://127.0.0.1:8080"));
+        let config = parse_proxy_config(Some("http://127.0.0.1:8080")).unwrap();
         assert!(config.is_some());
         match config.unwrap().mode {
             ProxyMode::HttpConnect(addr) => {
@@ -171,7 +181,31 @@ mod tests {
 
     #[test]
     fn parse_proxy_config_none() {
-        assert!(parse_proxy_config(None).is_none());
+        assert!(parse_proxy_config(None).unwrap().is_none());
+    }
+
+    #[test]
+    fn parse_proxy_config_invalid_scheme() {
+        let result = parse_proxy_config(Some("ftp://127.0.0.1:9050"));
+        assert!(result.is_err());
+        match result.unwrap_err() {
+            crate::error::ConfigError::ProxyConfigInvalid { message } => {
+                assert!(message.contains("unsupported proxy URL scheme"));
+            }
+            e => panic!("expected ProxyConfigInvalid, got {:?}", e),
+        }
+    }
+
+    #[test]
+    fn parse_proxy_config_invalid_address() {
+        let result = parse_proxy_config(Some("socks5://not-an-address"));
+        assert!(result.is_err());
+        match result.unwrap_err() {
+            crate::error::ConfigError::ProxyConfigInvalid { message } => {
+                assert!(message.contains("invalid socks5 proxy address"));
+            }
+            e => panic!("expected ProxyConfigInvalid, got {:?}", e),
+        }
     }
 
     #[test]
@@ -206,4 +240,34 @@ mod tests {
             TransportKind::Tcp
         );
     }
+
+    #[test]
+    fn static_config_from_serve_options_invalid_proxy_returns_err() {
+        let opts = ServeOptions::new(make_key_source())
+            .authorized_keys(make_authorized_keys_source())
+            .proxy("ftp://bad-scheme");
+        let result = StaticConfig::from_serve_options(opts);
+        assert!(result.is_err());
+        match result.unwrap_err() {
+            crate::error::ConfigError::ProxyConfigInvalid { message } => {
+                assert!(message.contains("unsupported proxy URL scheme"));
+            }
+            e => panic!("expected ProxyConfigInvalid, got {:?}", e),
+        }
+    }
+
+    #[test]
+    fn static_config_from_serve_options_malformed_proxy_address_returns_err() {
+        let opts = ServeOptions::new(make_key_source())
+            .authorized_keys(make_authorized_keys_source())
+            .proxy("socks5://not-a-valid-addr");
+        let result = StaticConfig::from_serve_options(opts);
+        assert!(result.is_err());
+        match result.unwrap_err() {
+            crate::error::ConfigError::ProxyConfigInvalid { message } => {
+                assert!(message.contains("invalid socks5 proxy address"));
+            }
+            e => panic!("expected ProxyConfigInvalid, got {:?}", e),
+        }
+    }
 }

crates/alknet-core/src/error.rs

@@ -67,6 +67,8 @@ pub enum ConfigError {
     },
     #[error("incompatible options")]
     IncompatibleOptions,
+    #[error("invalid proxy config: {message}")]
+    ProxyConfigInvalid { message: String },
 }
 
 #[derive(Debug, thiserror::Error)]
@@ -173,6 +175,13 @@ mod tests {
             ConfigError::IncompatibleOptions.to_string(),
             "incompatible options"
         );
+        assert_eq!(
+            ConfigError::ProxyConfigInvalid {
+                message: "bad proxy".to_string()
+            }
+            .to_string(),
+            "invalid proxy config: bad proxy"
+        );
     }
 
     #[test]

tasks/cleanup/panic-free-static-config.md

@@ -1,7 +1,7 @@
 ---
 id: cleanup/panic-free-static-config
 name: Replace panic/expect/unwrap with Result-based error handling in StaticConfig
-status: pending
+status: completed
 depends_on:
   - review/phase1-core-modifications
 scope: narrow
@@ -40,4 +40,4 @@ Since `StaticConfig::from_serve_options()` already returns `Result<..., ConfigEr
 
 ## Summary
 
-> To be filled on completion
+> Replaced all panic!/expect()/unwrap() in parse_proxy_config with Result-based error handling. Added ConfigError::ProxyConfigInvalid variant. Invalid proxy scheme or malformed address now returns clear errors instead of panicking. Added 4 new tests covering invalid scheme, invalid address, and from_serve_options error propagation.