feat(freight-api): enrich canonical request log line

Emit the request line as raw JSON on stdout (level/time/logger as fields)
instead of through Nest's console logger, whose prefix made it unparsable.

Collect data points via logCtx at the flow chokepoints: BaseRepository
writes (status changes, creates, deletes), invoice transitions, payment
intent lifecycle + outbound payment-service calls, booking/contract entry
state, review-note reasons, signatures and OTP verify outcomes.

packages/api-common/src/logging/request-log.middleware.ts

@@ -59,7 +59,6 @@ const userId = (req: LoggedRequest): string | undefined => {
 @Injectable()
 export class RequestLogMiddleware implements NestMiddleware {
   private readonly logger = new Logger("HTTP");
-  private readonly canonical = new Logger("request");
 
   use(req: LoggedRequest, res: LoggedResponse, next: () => void): void {
     const start = Date.now();
@@ -90,6 +89,12 @@ export class RequestLogMiddleware implements NestMiddleware {
 
         const line = {
           ...ctx,
+          // Fields the Nest console prefix used to carry. They are IN the JSON
+          // now because this line is written raw (see below) — a log shipper
+          // needs level and time as parsable fields, not as console decoration.
+          time: new Date().toISOString(),
+          level: status >= 500 ? "error" : status >= 400 ? "warn" : "info",
+          logger: "request",
           type: "http_request",
           requestId,
           method: req.method,
@@ -113,6 +118,9 @@ export class RequestLogMiddleware implements NestMiddleware {
           json = JSON.stringify(line);
         } catch {
           json = JSON.stringify({
+            time: line.time,
+            level: line.level,
+            logger: "request",
             type: "http_request",
             requestId,
             method: req.method,
@@ -123,9 +131,11 @@ export class RequestLogMiddleware implements NestMiddleware {
           });
         }
 
-        if (status >= 500) this.canonical.error(json);
-        else if (status >= 400) this.canonical.warn(json);
-        else this.canonical.log(json);
+        // Written raw, NOT through Nest's Logger: the console logger wraps every
+        // message in "[Nest] pid - date LEVEL [ctx] …", which makes the line
+        // un-parsable as JSON. Same destination the Nest logger writes to
+        // (stdout, stderr for errors) — only the decoration is dropped.
+        (status >= 500 ? process.stderr : process.stdout).write(`${json}\n`);
       };
 
       res.on("finish", emit);