test(autoplan-dual-voice): unwrap Claude Code 2.1.284 subagent hand-back frames; accept read-only probe diagnostics; record before asserting

Census run 36626737820: the native CEO report arrived framed and indented, so
its INPUT line never matched, and the model's exact probe plus two variable
echoes was not canonical. A column-zero line inside a frame, command
substitution, backticks, redirects, assignments, CODEX_MODE echoes and output
line-count mismatches stay rejected. The failure now records before asserting.

test/helpers/autoplan-dual-voice-evidence.ts

@@ -8,6 +8,15 @@ import { claudeOutsideExecutions } from './outside-voice-evidence';
 const sha = (value: string) => createHash('sha256').update(value).digest('hex');
 const text = (content: unknown): string => typeof content === 'string' ? content : Array.isArray(content)
   ? content.flatMap(block => block?.type === 'text' && typeof block.text === 'string' ? [block.text] : []).join('\n') : '';
+// Claude Code 2.1.284 frames a subagent report with one header line and indents
+// every report line by two spaces. Only a fully indented report is unwrapped;
+// a column-zero line inside the frame stays framed and earns no credit.
+const report = (content: string): string => {
+  const header = /^\[Subagent hand-back\] [^\n]*The report follows:\n/.exec(content);
+  if (!header) return content;
+  const lines = content.slice(header[0].length).split('\n');
+  return lines.every(line => line === '' || line.startsWith('  ')) ? lines.map(line => line.slice(2)).join('\n') : content;
+};
 const object = (value: unknown): value is Record<string, any> => value !== null && typeof value === 'object' && !Array.isArray(value);
 const parent = (event: any) => event?.parent_tool_use_id == null && event?.agentId == null && (event?.isSidechain == null || event?.isSidechain === false);
 // These are delivered executable blocks, not a shell interpreter. Only blank
@@ -160,18 +169,31 @@ export function autoplanDualVoiceEvidence(transcript: unknown[], options: Autopl
     }
     return seen.size > 0;
   };
+  // The exact probe may be followed by read-only diagnostics: double-quoted
+  // echoes of literal text and plain variables, one output line each, never
+  // naming CODEX_MODE. Their lines are the only output allowed after the mode.
+  const diagnosticEchoes = (command: string): number | null => {
+    const actual = code(command), contract = code(options.commands.probe);
+    if (!actual.startsWith(contract)) return null;
+    const suffix = actual.slice(contract.length);
+    if (suffix.includes('CODEX_MODE') ||
+        !/^(?:(?:;[ \t]*|\n)echo "(?:[^"$`\\\n]|\$[A-Za-z_][A-Za-z0-9_]*|\$\{[A-Za-z_][A-Za-z0-9_]*(?::-[A-Za-z0-9_ .,:=\/-]*)?\})*")+$/.test(suffix)) return null;
+    return suffix.match(/(?:;|\n)[ \t]*echo "/g)!.length;
+  };
   let probeResult = 'no Bash call matched the canonical probe block';
   let nonCanonicalProbes = 0;
   for (const call of calls.values()) {
     if (call.name !== 'Bash' || typeof call.input.command !== 'string') continue;
-    if (!canonical(call.input.command, options.commands.probe)) {
+    const echoes = canonical(call.input.command, options.commands.probe) ? 0 : diagnosticEchoes(call.input.command);
+    if (echoes === null) {
       if (call.input.command.includes('CODEX_MODE')) nonCanonicalProbes++;
       continue;
     }
     result.probeToolUseId = call.id; delete result.probeMode;
     if (!call.result || call.result.error) { probeResult = call.result ? 'probe result is an error' : 'probe has no result'; continue; }
     const modes = [...call.result.content.matchAll(/^CODEX_MODE: ([a-z_]+)\r?$/gm)];
-    if (modes.length !== 1 || !call.result.content.trimEnd().endsWith(modes[0]![0])) {
+    const trailing = modes.length === 1 ? call.result.content.slice(modes[0]!.index! + modes[0]![0].length).trimEnd() : '';
+    if (modes.length !== 1 || (trailing ? trailing.replace(/^\r?\n/, '').split(/\r?\n/).length : 0) !== echoes) {
       probeResult = `probe output has ${modes.length} CODEX_MODE line(s) and ${modes.length === 1 ? 'does not end with it' : 'needs exactly one'}`;
       continue;
     }
@@ -191,7 +213,7 @@ export function autoplanDualVoiceEvidence(transcript: unknown[], options: Autopl
       if (sha(content) !== snapshot.sha256 ||
           !readFileSync(nativePath, 'utf8').includes(content)) continue;
       if (!/^Async agent launched successfully\./.test(call.result.content) &&
-          !new RegExp('^INPUT: ceo ' + snapshot.sha256 + '(?:\\r?\\n|$)').test(call.result.content.trimStart())) continue;
+          !new RegExp('^INPUT: ceo ' + snapshot.sha256 + '(?:\\r?\\n|$)').test(report(call.result.content).trimStart())) continue;
       native.push({ call, snapshot, content });
     } catch { /* Unowned, spec-only, foreign-phase and forged snapshots earn no voice credit. */ }
   }