Use reqwest 0.12 with rustls-tls and add timeouts

Also improve review prompt with line calculation instructions, switch
feedback to French, and enable reasoning for OpenRouter.

src/env.rs

@@ -7,9 +7,11 @@ pub struct EnvConfig {
     pub webhook_secret: String,
     pub open_router_api_key: String,
     pub open_router_model: String,
+    pub open_router_timeout: u64,
     pub bot_name: String,
     pub gitea_url: String,
     pub gitea_token: String,
+    pub gitea_timeout: u64,
 }
 
 pub fn load_config() -> anyhow::Result<EnvConfig> {
@@ -20,8 +22,10 @@ pub fn load_config() -> anyhow::Result<EnvConfig> {
     let webhook_secret = try_get_env("WEBHOOK_SIG_HEADER_SECRET")?;
     let open_router_api_key = try_get_env("OPEN_ROUTER_API_KEY")?;
     let open_router_model = try_get_env("OPEN_ROUTER_MODEL")?;
+    let open_router_timeout = try_get_env("OPEN_ROUTER_TIMEOUT")?.parse()?;
     let gitea_url = try_get_env("GITEA_URL")?;
     let gitea_token = try_get_env("GITEA_TOKEN")?;
+    let gitea_timeout = try_get_env("GITEA_TIMEOUT")?.parse()?;
 
     Ok(EnvConfig {
         http_port,
@@ -29,8 +33,10 @@ pub fn load_config() -> anyhow::Result<EnvConfig> {
         bot_name,
         open_router_api_key,
         open_router_model,
+        open_router_timeout,
         gitea_url,
         gitea_token,
+        gitea_timeout,
     })
 }