feat: add log duration on first valid log line

This will probably be the log levels line ut if not present will be placed on the first line with timestamp.

Author: lukecotter

lana/src/decorations/LogTimingDecoration.ts

@@ -11,7 +11,7 @@ import {
 } from 'vscode';
 
 import { Context } from '../Context.js';
-import { isApexLogContent } from '../language/ApexLogLanguageDetector.js';
+import { APEXLOG_HEADER, isApexLogContent } from '../language/ApexLogLanguageDetector.js';
 import { formatDuration, TIMESTAMP_REGEX } from '../log-utils.js';
 
 // Pattern to find EXECUTION_STARTED line
@@ -98,8 +98,13 @@ export class LogTimingDecoration {
 
     const formattedDuration = formatDuration(duration);
 
-    // Create decoration for line 0 (first line)
-    const line = document.lineAt(0);
+    const startLine = this.findFirstLogLine(document);
+    if (startLine === null) {
+      editor.setDecorations(decorationType, []);
+      return;
+    }
+
+    const line = document.lineAt(startLine);
     const decoration: DecorationOptions = {
       range: line.range,
       renderOptions: {
@@ -112,6 +117,17 @@ export class LogTimingDecoration {
     editor.setDecorations(decorationType, [decoration]);
   }
 
+  private findFirstLogLine(doc: TextDocument): number | null {
+    const limit = Math.min(1000, doc.lineCount);
+    for (let i = 0; i < limit; i++) {
+      const text = doc.lineAt(i).text;
+      if (APEXLOG_HEADER.test(text) || TIMESTAMP_REGEX.test(text)) {
+        return i;
+      }
+    }
+    return null;
+  }
+
   private calculateLogDuration(document: TextDocument): number | null {
     const startTs = this.findTimestamp(document, false, executionStartedRegex);
     const endTs = this.findTimestamp(document, true, TIMESTAMP_REGEX);

lana/src/language/ApexLogLanguageDetector.ts

@@ -16,7 +16,7 @@ import {
 
 import { Context } from '../Context.js';
 
-const APEXLOG_HEADER = /^(\d\d\.\d.+?)?APEX_CODE,\w.+$/;
+export const APEXLOG_HEADER = /^(\d\d\.\d.+?)?APEX_CODE,\w.+$/;
 const EXECUTION_STARTED = /^\d{2}:\d{2}:\d{2}\.\d{1,} \(\d+\)\|EXECUTION_STARTED$/;
 const USER_INFO = /^\d{2}:\d{2}:\d{2}\.\d{1,} \(\d+\)\|USER_INFO\|/;
 const DETECT_EXTENSIONS = new Set(['.log', '.txt']);