v1.84.1.0 fix: default Codex and Claude to frontier models (#2835)

* fix: default cross-model workflows to frontier models

* chore: bump version and changelog (v1.82.1.0)

Co-Authored-By: OpenAI Codex <noreply@openai.com>

* fix: repair frontier eval budgets and workflow instructions

Preserve frontier models and quality thresholds while fixing truncated judge output, ordered section expansion, consent checks, QA scoring, and ship audit gates. Add regression coverage and refresh generated docs.

Co-Authored-By: OpenAI Codex <noreply@openai.com>

* fix: resolve workflow gaps exposed by frontier evals

Clarify plan-review ordering and fallback modes, preserve deploy readiness gates, honor configured merge methods, correct benchmark and canary contracts, and restore vendored installs on setup failure. Cover recovery with real-shell regressions.

Co-Authored-By: OpenAI Codex <noreply@openai.com>

* fix: use agent capture budgets for deploy evals

Multi-turn deploy and benchmark sessions were incorrectly limited to the single-call judge timeout. Use the existing capture tier and leave outer-test cleanup headroom, with a free policy regression test. Keep all behavioral assertions and frontier models unchanged.

Co-Authored-By: OpenAI Codex <noreply@openai.com>

* fix: clarify retro workflow and evaluate compare instructions

Include compare mode in the frontier judge excerpt, define metric sources and snapshot ordering, and preserve the existing prompt-size budget.

Co-authored-by: OpenAI Codex <noreply@openai.com>

* fix: make documentation release review and publication consistent

Review before commit, clarify changelog safeguards and unavailable reviewer modes, and preserve raw PR bodies across separate shell calls. Keep title sync in one shell and add regression coverage.

Co-authored-by: OpenAI Codex <noreply@openai.com>

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Co-authored-by: OpenAI Codex <noreply@openai.com>

test/helpers/claude-pty-runner.ts

@@ -80,9 +80,8 @@ export interface ClaudePtyOptions {
   /**
    * Model for the spawned interactive `claude`. Without an explicit --model the
    * child inherits the operator's ~/.claude/settings.json model (e.g.
-   * claude-fable-5[1m]), which can spend 5+ min in extended thinking on an empty
-   * plan-mode context and blow every smoke budget. Resolution mirrors
-   * session-runner.ts:144 exactly: opts.model ?? EVALS_MODEL ?? 'claude-sonnet-4-6'.
+   * the operator's own settings. Resolution mirrors session-runner.ts exactly:
+   * opts.model ?? EVALS_MODEL ?? resolveEvalModel('capture').
    * Pushed BEFORE extraArgs so a test-supplied --model still wins (last flag wins).
    */
   model?: string;
@@ -1306,10 +1305,10 @@ export async function launchClaudePty(
 
   const args: string[] = [];
   // Pin the model so smokes don't inherit the operator's settings.json model
-  // (see ClaudePtyOptions.model). Chain mirrors session-runner.ts:144 so PTY and
+  // (see ClaudePtyOptions.model). Chain mirrors session-runner.ts so PTY and
   // `claude -p` evals always agree. Pushed before extraArgs => a test-supplied
   // --model wins (last flag wins).
-  const model = opts.model ?? process.env.EVALS_MODEL ?? 'claude-sonnet-4-6';
+  const model = opts.model ?? process.env.EVALS_MODEL ?? resolveEvalModel('capture');
   args.push('--model', model);
   // Permission mode: 'plan' default, null => omit flag entirely.
   const permissionMode = opts.permissionMode === undefined ? 'plan' : opts.permissionMode;
@@ -1699,7 +1698,7 @@ export async function runPlanSkillObservation(opts: {
    */
   initialPlanContent?: string;
   /** Override the spawned model. Defaults via launchClaudePty's chain
-   *  (opts.model ?? EVALS_MODEL ?? 'claude-sonnet-4-6'). */
+   *  (opts.model ?? EVALS_MODEL ?? resolveEvalModel('capture')). */
   model?: string;
   /** Literal tokens to track as high-water marks over the CUMULATIVE visible
    *  buffer (case-sensitive). Results land in obs.tokensObserved. Use for