fix: missing model/cost on <synthetic>, Codex Desktop, and run-recorder sessions

src/adapters/codex-desktop.mjs

@@ -58,7 +58,7 @@ function extractUserMessage(body) {
   return m ? unescapeRust(m[1]).trim() : null;
 }
 
-// Extract per-turn billed usage from response.completed WebSocket event
+// Extract per-turn billed usage and model from response.completed WebSocket event
 function extractResponseUsage(body) {
   if (!body?.includes('"type":"response.completed"')) return null;
   try {
@@ -71,6 +71,7 @@ function extractResponseUsage(body) {
       input_tokens: u.input_tokens ?? 0,
       output_tokens: u.output_tokens ?? 0,
       cached_tokens: u.input_tokens_details?.cached_tokens ?? 0,
+      model: data?.response?.model ?? null,
     };
   } catch {
     return null;
@@ -167,6 +168,7 @@ export async function readNewSessions(sinceId = 0, dbPath = DEFAULT_DB_PATH) {
         t.billed_input  += u.input_tokens;
         t.billed_output += u.output_tokens;
         t.billed_cached += u.cached_tokens;
+        if (!t.model && u.model) t.model = u.model;
       }
     }
 

src/adapters/transcript.mjs

@@ -49,7 +49,7 @@ export function extractFromTranscript(lines) {
       const msg = entry.message ?? {};
       const u = msg.usage ?? {};
 
-      if (msg.model && !model) model = msg.model;
+      if (msg.model && !model && !msg.model.startsWith('<')) model = msg.model;
 
       if (u.input_tokens != null || u.output_tokens != null) {
         hasUsage = true;

src/codex-watcher.mjs

@@ -99,7 +99,6 @@ async function recordCodexDesktopSession(session) {
     usage,
     session: { session_id: runId },
     tools: { command_count: 0, commands: [] },
-    files: { read_count: 0, reads: [] },
     diff: { files_changed: countPatchFiles(patch) },
     artifacts: {
       events: 'events.jsonl',

src/run-recorder.mjs

@@ -293,13 +293,23 @@ function inferModelFromArgs(command) {
 }
 
 async function readCodexConfiguredModel() {
+  // CODEX_MODEL env var takes priority
+  if (process.env.CODEX_MODEL) return process.env.CODEX_MODEL;
+  // Try config.toml
   try {
-    const config = await readFile(join(homedir(), '.codex', 'config.toml'), 'utf8');
-    const match = config.match(/^model\s*=\s*"([^"]+)"/m);
-    return match?.[1] ?? null;
-  } catch {
-    return null;
+    const toml = await readFile(join(homedir(), '.codex', 'config.toml'), 'utf8');
+    const m = toml.match(/^model\s*=\s*"([^"]+)"/m);
+    if (m) return m[1];
+  } catch { /* no file */ }
+  // Try config.yaml / config.yml
+  for (const name of ['config.yaml', 'config.yml']) {
+    try {
+      const yaml = await readFile(join(homedir(), '.codex', name), 'utf8');
+      const m = yaml.match(/^model\s*:\s*["']?([^\s"']+)/m);
+      if (m) return m[1];
+    } catch { /* no file */ }
   }
+  return null;
 }
 
 function withoutType(observation) {