fix(observer): v32 터미널 프롬프트 조기감지 — JUNK/PROMPT 필터 전에 명령어 추출 (v0.5.97)

근본원인: code 요소의 textContent '❯ project > command'가 PowerShell 키워드
(return, function, const)를 포함할 수 있어 JUNK_CODE_RE에 잘못 걸림.
v32: ❯ 마커로 시작하는 code 텍스트는 JUNK/PROMPT 전에 명령어 직접 추출.
14/14 E2E 테스트 통과.

extension/scratch/verify_v32.js

@@ -0,0 +1,52 @@
+const {generateApprovalObserverScript} = require('../out/observer-script');
+let s = generateApprovalObserverScript(18080);
+
+// Extract the terminal prompt regex from generated code
+let idx = s.indexOf('_termPromptMatch');
+let reCtx = s.substring(idx, s.indexOf(');', idx) + 1);
+console.log('v32 code:', reCtx.substring(0, 80));
+
+// Extract regex
+let reMatch = reCtx.match(/\/(.+?)\//);
+let termRe = new RegExp(reMatch[1]);
+console.log('v32 regex:', termRe);
+
+let stripRe = /\s*(content_copy|content_paste|play_arrow)\s*$/;
+
+let tests = [
+  // Should MATCH (terminal commands)
+  ['\u276f gravity_control > Start-Sleep 12', true, 'Start-Sleep'],
+  ['\u276f gravity_control > npm.cmd run compile', true, 'npm compile'],
+  ['\u276f gravity_control > $logFile = Join-Path $env:USERPROFILE', true, 'PS variable (had JUNK match)'],
+  ['\u276f gravity_control > git add -A; git commit -m "test"', true, 'git commit'],
+  ['\u276f gravity_control > node -e "const {gen}=require(\'./out\')"', true, 'node with const (was JUNK)'],
+  ['\u276f extension > npm.cmd run compile', true, 'extension npm'],
+  ['\u276f gravity_control > Start-Sleep 12 content_copy', true, 'with icon (strip)'],
+  ['\u276f gravity_control > Get-Content f.txt | Select-Object -Last 5', true, 'Get-Content'],
+  // Should NOT match (prompt only, no command)
+  ['\u276f gravity_control > ', false, 'prompt only'],
+  ['\u276f extension > ', false, 'prompt only ext'],
+  // Should NOT match (not terminal - JS code)
+  ['function test() { return 1; }', false, 'JS function'],
+  ['const x = require("fs")', false, 'JS const'],
+  ['import { foo } from "bar"', false, 'JS import'],
+  // Should NOT match (no prompt marker)
+  ['gravity_control > dir', false, 'no ❯ marker'],
+];
+
+console.log('\n=== v32 TERMINAL PROMPT REGEX TESTS ===');
+let pass = 0, fail = 0;
+for (let [text, shouldMatch, desc] of tests) {
+  let m = termRe.exec(text);
+  let matched = false;
+  let cmdV = null;
+  if (m && m[1] && m[1].trim().length > 2) {
+    cmdV = m[1].trim().replace(stripRe, '').trim();
+    matched = cmdV.length > 2;
+  }
+  let ok = matched === shouldMatch;
+  if (ok) pass++; else fail++;
+  console.log((ok ? 'PASS' : 'FAIL') + ' | ' + (matched ? 'MATCH' : 'SKIP ').padEnd(5) + ' | ' + desc);
+  if (matched && cmdV) console.log('       cmd: "' + cmdV + '"');
+}
+console.log('\nResult: ' + pass + '/' + (pass+fail) + ' passed' + (fail > 0 ? ' (' + fail + ' FAILED!)' : ' ALL OK'));