Send browser cookies/UA for live auth

Client builds the Cookie header as 'auth=<value>; oc_locale=en' from the bare
auth value the config supplies, so oc_locale defaults to English and the
scrape selectors match. Legacy full-header configs pass through. Default
User-Agent is a desktop Chrome string; --user-agent still overrides. Fix
relative-time past tense ('1m ago' not 'ago1m'). Verified live against a real
OpenCode account: balance, three usage frames, and reset times all parse.

src/client.rs

@@ -22,6 +22,24 @@ pub fn go_url(workspace: &str) -> String {
     GO_BASE_URL.replace("{workspace}", workspace)
 }
 
+/// Build the Cookie header from the bare `auth` value. OpenCode expects an
+/// `auth` cookie plus an `oc_locale` cookie. We pin `oc_locale=en` so the page
+/// renders in English and the scrape selectors match the captured pages.
+///
+/// If `cookie` already looks like a full header (contains `=` and `;`), pass
+/// it through unchanged so legacy configs keep working.
+fn cookie_header(cookie: &str) -> String {
+    let trimmed = cookie.trim();
+    if trimmed.contains('=') && (trimmed.contains(';') || trimmed.starts_with("auth=")) {
+        // Caller supplied a full header. Use as-is, but ensure oc_locale.
+        if trimmed.contains("oc_locale") {
+            return trimmed.to_string();
+        }
+        return format!("{trimmed}; oc_locale=en");
+    }
+    format!("auth={trimmed}; oc_locale=en")
+}
+
 pub struct HttpClient {
     client: reqwest::Client,
     retries: u8,
@@ -59,8 +77,9 @@ impl HttpClient {
         let resp = self
             .client
             .get(url)
-            .header("cookie", cookie)
+            .header("cookie", cookie_header(cookie))
-            .header("accept", "text/html,application/xhtml+xml,*/*;q=0.8")
+            .header("accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8")
+            .header("accept-language", "en-US,en;q=0.9")
             .send()
             .await
             .map_err(|e| {

src/main.rs

@@ -18,6 +18,11 @@ use clap::Parser;
 use cli::{CacheAction, Cli, Command, ConfigAction, RawFormat};
 use model::{AccountReport, ReportStatus};
 
+/// User-Agent sent on every request. Looks like a normal desktop browser so
+/// OpenCode serves the same HTML the scrape selectors were built against. The
+/// user can override with `--user-agent`.
+const DEFAULT_USER_AGENT: &str = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36";
+
 fn main() -> ExitCode {
     let cli = Cli::parse();
     let rt = match tokio::runtime::Builder::new_multi_thread()
@@ -131,7 +136,7 @@ fn load_and_options(cli: &Cli) -> anyhow::Result<(config::Config, fetch::FetchOp
     let user_agent = cli
         .user_agent
         .clone()
-        .unwrap_or_else(|| format!("ocd/{}", env!("CARGO_PKG_VERSION")));
+        .unwrap_or_else(|| DEFAULT_USER_AGENT.to_string());
     let ttl = cli.ttl.or(cfg.default_ttl_secs).unwrap_or(180);
     let opts = fetch::FetchOptions {
         ttl_secs: ttl,

src/timefmt.rs

@@ -14,9 +14,8 @@ pub fn relative(iso: &str) -> String {
     let now = Utc::now();
     let d = t.signed_duration_since(now);
     let secs = d.num_seconds();
-    let sign = if secs >= 0 { "in " } else { " ago" };
     let body = dur_words(secs.abs());
-    format!("{sign}{body}")
+    if secs >= 0 { format!("in {body}") } else { format!("{body} ago") }
 }
 
 /// Absolute UTC string like "2025-08-31 17:00 UTC".