jamesnordlund · March 15, 2026 22:40 · jamesnordlund · Mar 22, 2026
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        <header class="session-header">
            <h1>Claude Code Session</h1>
            <div class="session-meta">
                <span class="session-id">aac8187e-552c-459e-9cc7-67e473860eab</span>
                <span class="session-date">2026-03-15 18:56:43</span>
            </div>
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        <article class="turn turn-user" id="turn-0">
            <div class="turn-meta">
                <span class="turn-role">User</span>
                <span class="turn-timestamp">2026-03-15T18:56:43.328Z</span>
            </div>
            <div class="turn-content"><p>We should update System2 to address the theoretical points raised in <a href="https://arxiv.org/abs/2603.03823">https://arxiv.org/abs/2603.03823</a> on agentic coding tools and the slow accumulation of repository-health debt over time. The goal is <strong>not</strong> to make System2 heavier; it is to preserve the current fast path while adding a bounded corrective path when verification reveals drift, regressions, or architectural mismatch.</p>
 <h2><code>CLAUDE.md</code></h2>
 <p>Use a narrower maintenance / regression loop so normal executor self-correction still works, and corrective re-framing only triggers when it should:</p>
 <pre><code class="language-markdown"><span class="gu">## Maintenance / Regression Loop</span>
 When verification reveals regressions, cross-module side effects, or exhaustion of the executor self-correction limit:

 <span class="k">1.</span> Pause implementation on the current task.
 <span class="k">2.</span> Classify the failure scope:
 <span class="w">   </span><span class="k">-</span><span class="w"> </span><span class="gs">**Local**</span>: regression is confined to file(s) currently being edited → return to executor for normal self-correction (counts against the 2-attempt limit).
 <span class="w">   </span><span class="k">-</span><span class="w"> </span><span class="gs">**Non-local**</span>: regression is in files not touched by the current task, spans multiple modules, or involves interface/contract violations → proceed to step 3.
 <span class="k">3.</span> Record a regression ledger in <span class="sb">`spec/regression-ledger.md`</span>:
 <span class="w">   </span><span class="k">-</span><span class="w"> </span>previously passing tests now failing
 <span class="w">   </span><span class="k">-</span><span class="w"> </span>newly passing tests
 <span class="w">   </span><span class="k">-</span><span class="w"> </span>unchanged failures
 <span class="w">   </span><span class="k">-</span><span class="w"> </span>likely failure cluster / root-cause area
 <span class="w">   </span><span class="k">-</span><span class="w"> </span>changed-file summary (files modified since last green run)
 <span class="k">4.</span> Delegate to <span class="sb">`requirements-engineer`</span> in corrective mode to produce a bounded corrective requirement packet. Pass the regression ledger and any relevant test logs as input.
 <span class="k">5.</span> Assess the corrective delta weight:
 <span class="w">   </span><span class="k">-</span><span class="w"> </span><span class="gs">**Amendment**</span>: corrective requirements refine existing design decisions without invalidating them → update affected sections of <span class="sb">`spec/requirements.md`</span>, refresh <span class="sb">`spec/tasks.md`</span> inline, and re-enter executor.
 <span class="w">   </span><span class="k">-</span><span class="w"> </span><span class="gs">**Invalidation**</span>: corrective requirements contradict or obsolete existing design decisions, change shared interfaces, or alter data contracts → delegate to <span class="sb">`design-architect`</span> to refresh <span class="sb">`spec/design.md`</span> and <span class="sb">`spec/tasks.md`</span> before re-entering executor.
 <span class="k">6.</span> Re-enter executor only after the corrective packet is approved.

 Corrective iteration cap:
 <span class="k">-</span><span class="w"> </span>Track consecutive corrective cycles on the same task or subsystem.
 <span class="k">-</span><span class="w"> </span>After <span class="gs">**3**</span> corrective cycles without convergence (i.e., each cycle introduces new regressions or fails to resolve the original ones), halt and escalate to user gate with a summary of what was attempted and why it is not converging.
 <span class="k">-</span><span class="w"> </span>Do not reset the counter unless the user explicitly approves a scope change or the verification suite passes cleanly.
 </code></pre>
 <p>This preserves the current hot path and avoids escalating routine local failures into process overhead.</p>
 <h2><code>requirements-engineer.md</code></h2>
 <p>Strengthen <code>requirements-engineer</code> so it can handle both initial specification work and bounded corrective re-framing after verification failures, without adding a separate maintenance agent.</p>
 <pre><code class="language-markdown">description: Produces and updates spec/requirements.md. In baseline mode, translates approved spec/context.md into EARS requirements with validation and traceability. In corrective mode, analyzes verification failures and distills them into a bounded, high-level corrective requirement delta with explicit regression guards.

 Inputs:
 <span class="k">-</span><span class="w"> </span>spec/context.md (required in baseline mode)
 <span class="k">-</span><span class="w"> </span>spec/requirements.md (if present)
 <span class="k">-</span><span class="w"> </span>spec/design.md and spec/tasks.md (if present)
 <span class="k">-</span><span class="w"> </span>spec/regression-ledger.md (required in corrective mode)
 <span class="k">-</span><span class="w"> </span>verification summary, failing test logs, code review findings (required in corrective mode when available)
 <span class="k">-</span><span class="w"> </span>CLAUDE.md and .claude/settings.json (if present)
 <span class="k">-</span><span class="w"> </span>.claude/rules/*.md for any modular rule files
 <span class="k">-</span><span class="w"> </span>Any existing API/docs relevant to the change

 Operating modes:
 <span class="k">1.</span> Baseline mode (default)
 <span class="w">   </span><span class="k">-</span><span class="w"> </span>Use unless the orchestrator explicitly supplies corrective evidence or sets corrective mode.
 <span class="w">   </span><span class="k">-</span><span class="w"> </span>Draft or refresh the full requirements document from approved context.
 <span class="k">2.</span> Corrective mode
 <span class="w">   </span><span class="k">-</span><span class="w"> </span>Use after regressions, cross-module side effects, or exhaustion of the executor self-correction limit.
 <span class="w">   </span><span class="k">-</span><span class="w"> </span>Read spec/regression-ledger.md as the primary evidence source.
 <span class="w">   </span><span class="k">-</span><span class="w"> </span>Summarize failing tests, regressions, and review findings into behavioral clusters.
 <span class="w">   </span><span class="k">-</span><span class="w"> </span>Attribute clusters to likely implementation, interface, state, or contract deficiencies.
 <span class="w">   </span><span class="k">-</span><span class="w"> </span>Produce a bounded corrective requirement delta.
 <span class="w">   </span><span class="k">-</span><span class="w"> </span>Focus on expected behavior, not implementation details.
 <span class="w">   </span><span class="k">-</span><span class="w"> </span>Prefer amending existing requirements over creating duplicates.
 <span class="w">   </span><span class="k">-</span><span class="w"> </span>Preserve requirement IDs where feasible; otherwise cross-reference superseded IDs.
 <span class="w">   </span><span class="k">-</span><span class="w"> </span>Add explicit regression guards and preservation constraints.
 <span class="w">   </span><span class="k">-</span><span class="w"> </span>Record deferred items rather than broadening scope.
 <span class="w">   </span><span class="k">-</span><span class="w"> </span>Default to 1-5 urgent requirements; exceed only when necessary and note why.
 <span class="w">   </span><span class="k">-</span><span class="w"> </span>Classify each corrective requirement by design impact:
 <span class="w">     </span><span class="k">-</span><span class="w"> </span><span class="gs">**amendment**</span> — refines or tightens an existing design decision
 <span class="w">     </span><span class="k">-</span><span class="w"> </span><span class="gs">**invalidation**</span> — contradicts or obsoletes an existing design decision
 <span class="w">   </span><span class="k">-</span><span class="w"> </span>This classification determines whether the orchestrator invokes design-architect (see CLAUDE.md step 5).

 Corrective drafting rules:
 <span class="k">-</span><span class="w"> </span>For each corrective requirement, state:
 <span class="w">  </span><span class="k">-</span><span class="w"> </span>what must change
 <span class="w">  </span><span class="k">-</span><span class="w"> </span>what must remain unchanged
 <span class="w">  </span><span class="k">-</span><span class="w"> </span>any backward compatibility or migration constraint
 <span class="w">  </span><span class="k">-</span><span class="w"> </span>design impact classification (amendment | invalidation)
 <span class="k">-</span><span class="w"> </span>Do not prescribe code structure, algorithms, or file-level implementation.
 <span class="k">-</span><span class="w"> </span>If evidence is insufficient, write an Open Requirement instead of guessing.
 <span class="k">-</span><span class="w"> </span>Keep corrective updates compact: prefer a small corrective delta / appendix over bloating the entire requirements doc.

 Traceability updates in corrective mode:
 <span class="k">-</span><span class="w"> </span>source mode: corrective
 <span class="k">-</span><span class="w"> </span>source failure cluster or verification finding (reference regression-ledger entry)
 <span class="k">-</span><span class="w"> </span>related design section
 <span class="k">-</span><span class="w"> </span>related task IDs
 <span class="k">-</span><span class="w"> </span>validation method
 <span class="k">-</span><span class="w"> </span>superseded / amended requirement ID (if any)
 </code></pre>
 <p>This makes corrective mode real without slowing ordinary Gate 2 work.</p>
 <h2><code>executor.md</code></h2>
 <p>Keep the executor productive, but make the handoff trigger cleaner:</p>
 <pre><code class="language-markdown">Maintenance execution rules:
 <span class="k">-</span><span class="w"> </span>Treat the approved task list or corrective requirement packet as the contract.
 <span class="k">-</span><span class="w"> </span>Do not expand scope to solve adjacent failures unless the contract explicitly includes them.
 <span class="k">-</span><span class="w"> </span>Continue normal local self-correction for routine implementation failures (regressions confined to files you are actively editing).
 <span class="k">-</span><span class="w"> </span>If you observe regressions in files you have not modified, cross-module side effects, or you exhaust the self-correction limit, stop and request corrective requirements.
 <span class="k">-</span><span class="w"> </span>If the fix appears to require interface redesign, stop and request updated design.
 <span class="k">-</span><span class="w"> </span>Prefer localized edits to stable interfaces over call-site proliferation.

 Citation authority during corrective execution:
 <span class="k">-</span><span class="w"> </span>When implementing fixes from a corrective requirement packet, the packet&#39;s requirement IDs serve as valid citation authority for test updates until spec/requirements.md is formally refreshed.
 <span class="k">-</span><span class="w"> </span>Once spec/requirements.md is updated, all subsequent citations must reference the canonical requirement IDs.
 </code></pre>
 <h2><code>test-engineer.md</code></h2>
 <p>No major conceptual change, but the evidence it emits should be normalized enough to support corrective mode upstream:</p>
 <pre><code class="language-markdown">Verification summary must include:
 <span class="k">-</span><span class="w"> </span>baseline passing tests
 <span class="k">-</span><span class="w"> </span>newly passing tests
 <span class="k">-</span><span class="w"> </span>regressed tests (previously passing, now failing)
 <span class="k">-</span><span class="w"> </span>unchanged failures
 <span class="k">-</span><span class="w"> </span>flaky / environmental failures
 <span class="k">-</span><span class="w"> </span>likely failure clusters (group related failures by module or root cause)
 <span class="k">-</span><span class="w"> </span>changed-file summary: list of files modified since the last fully passing verification run, with a one-line description of each change

 The changed-file summary is required because the requirements-engineer and orchestrator use it in corrective mode to attribute regressions. If the executor has not provided a changed-file list, the test-engineer must reconstruct one from git diff or tool-use history before emitting the verification summary.
 </code></pre>
 <p>Keep the stricter test mutation policy:</p>
 <pre><code class="language-markdown">Test mutation policy:
 <span class="k">-</span><span class="w"> </span>Never weaken an existing assertion without explicitly labeling it: <span class="sb">`assertion_weakened: yes`</span> + rationale.
 <span class="k">-</span><span class="w"> </span>Never update tests merely to match the current buggy behavior.
 <span class="k">-</span><span class="w"> </span>Classify each test edit as one of:
 <span class="w">  </span><span class="k">1.</span> missing coverage
 <span class="w">  </span><span class="k">2.</span> approved behavior change
 <span class="w">  </span><span class="k">3.</span> flaky/environment fix
 <span class="w">  </span><span class="k">4.</span> harness/config repair
 <span class="k">-</span><span class="w"> </span>If the change is category (2), cite the REQ ID or approved design section. During active corrective execution, the corrective requirement packet&#39;s IDs are valid citations (see executor maintenance rules).
 <span class="k">-</span><span class="w"> </span>If the change weakens signal, escalate to <span class="sb">`code-reviewer`</span> and user gate.
 </code></pre>
 <h2><code>code-reviewer.md</code></h2>
 <p>Keep the future-change probe, since it targets long-horizon maintainability without affecting the main implementation loop:</p>
 <pre><code class="language-markdown">Future-change probe:
 <span class="k">-</span><span class="w"> </span>Name one plausible next requirement likely to arrive within the same area.
 <span class="k">-</span><span class="w"> </span>Assess whether this diff makes that next change easier, neutral, or harder.
 <span class="k">-</span><span class="w"> </span>Identify any new rigidities introduced:
 <span class="w">  </span><span class="k">-</span><span class="w"> </span>duplicated branching
 <span class="w">  </span><span class="k">-</span><span class="w"> </span>hard-coded special cases
 <span class="w">  </span><span class="k">-</span><span class="w"> </span>widened interfaces
 <span class="w">  </span><span class="k">-</span><span class="w"> </span>hidden coupling
 <span class="w">  </span><span class="k">-</span><span class="w"> </span>stateful behavior without tests
 </code></pre>
 <h2><code>eval-engineer.md</code></h2>
 <p>Keep sequential maintenance evals, but use them as evaluation instrumentation rather than mandatory workflow friction:</p>
 <pre><code class="language-markdown">Maintenance evals:
 <span class="k">-</span><span class="w"> </span>author change sequences A -&gt; B -&gt; C in the same subsystem
 <span class="k">-</span><span class="w"> </span>measure:
 <span class="w">  </span><span class="k">-</span><span class="w"> </span>regression-free sequence completion
 <span class="w">  </span><span class="k">-</span><span class="w"> </span>diff size growth across rounds
 <span class="w">  </span><span class="k">-</span><span class="w"> </span>interface churn
 <span class="w">  </span><span class="k">-</span><span class="w"> </span>time-to-fix-second-change
 <span class="w">  </span><span class="k">-</span><span class="w"> </span>test preservation rate
 <span class="w">  </span><span class="k">-</span><span class="w"> </span>number of re-architect cycles needed
 <span class="w">  </span><span class="k">-</span><span class="w"> </span>corrective cycle count (should remain under the cap of 3)
 <span class="k">-</span><span class="w"> </span>fail the eval if later changes require widening scope beyond the intended subsystem
 </code></pre>
 <h2>Allowlist and file updates</h2>
 <p>The following updates are required to support the new <code>spec/regression-ledger.md</code> artifact:</p>
 <pre><code class="language-markdown">New allowlist file: allowlists/regression-ledger.regex
 Contents:
  ^spec/regression-ledger\.md$

 Agents that need write access to regression-ledger:
 <span class="k">-</span><span class="w"> </span>orchestrator (via CLAUDE.md — records the ledger at step 3)
 <span class="k">-</span><span class="w"> </span>test-engineer (may append changed-file summary if orchestrator delegates)

 Agents that need read access to regression-ledger:
 <span class="k">-</span><span class="w"> </span>requirements-engineer (primary input in corrective mode)
 <span class="k">-</span><span class="w"> </span>design-architect (context when refreshing design)
 <span class="k">-</span><span class="w"> </span>executor (context when re-entering after corrective cycle)

 Update hooks/validate-file-paths.py references in agent frontmatter accordingly.
 </code></pre>
 <h2>Bottom line</h2>
 <p>The main changes are:</p>
 <ul>
 <li>keep <code>requirements-engineer</code>, but make it bimodal</li>
 <li>default to baseline mode so current efficacy is preserved</li>
 <li>trigger corrective mode only on real signals, not ordinary local failures</li>
 <li><strong>add a local-vs-non-local classification heuristic</strong> so the orchestrator has a concrete rule for when to escalate versus retry</li>
 <li><strong>cap corrective iteration at 3 cycles</strong> before escalating to user gate</li>
 <li><strong>distinguish amendment vs invalidation</strong> in corrective deltas to avoid unnecessary design-architect invocations</li>
 <li>require design/tasks reconciliation only when corrective requirements <strong>invalidate</strong> (not merely amend) the contract</li>
 <li><strong>formalize the regression ledger as <code>spec/regression-ledger.md</code></strong> with explicit ownership and allowlist entries</li>
 <li><strong>assign changed-file summary production</strong> to the test-engineer so all corrective-mode inputs have a clear owner</li>
 <li><strong>clarify REQ ID citation authority</strong> during corrective execution so test-engineer doesn’t flag its own updates as violations</li>
 <li>keep corrective deltas compact so <code>spec/requirements.md</code> does not turn into stratified sediment</li>
 </ul>
 </div>
        </article>
        <article class="turn turn-assistant" id="turn-1">
            <div class="turn-meta">
                <span class="turn-role">Claude</span>
                <span class="turn-timestamp">2026-03-15T18:56:50.222Z</span>
            </div>
            <div class="turn-content"><p>Let me assess the current state and understand the repository structure before planning the implementation.</p>
 </div>
            <details class="thinking-block">
                <summary>Thinking</summary>
                <div class="thinking-content"><p>The user wants to update several files in the System2 repository to implement a maintenance/regression loop based on insights from an arxiv paper. Let me first assess the current state of the repository and understand what files need to be modified.</p>
 <p>Let me start by:</p>
 <ol>
 <li>Checking the spec artifact state (as per <a href="http://CLAUDE.md">CLAUDE.md</a> bootstrap)</li>
 <li>Reading the current versions of all files that need to be modified</li>
 <li>Understanding the file structure</li>
 </ol>
 <p>The files to modify are:</p>
 <ul>
 <li>
 <p><a href="http://CLAUDE.md">CLAUDE.md</a> - Add Maintenance / Regression Loop section</p>
 </li>
 <li>
 <p>Agent definition files (<a href="http://requirements-engineer.md">requirements-engineer.md</a>, <a href="http://executor.md">executor.md</a>, <a href="http://test-engineer.md">test-engineer.md</a>, <a href="http://code-reviewer.md">code-reviewer.md</a>, <a href="http://eval-engineer.md">eval-engineer.md</a>)</p>
 </li>
 <li>
 <p>Allowlist files and hook/validation references</p>
 </li>
 </ul>
 <p>Now I need to explore the repository structure to understand how these components fit together.</p>
 </div>
            </details>
        </article>
        <article class="turn turn-user" id="turn-2">
            <div class="turn-meta">
                <span class="turn-role">User</span>
                <span class="turn-timestamp">2026-03-15T19:03:44.036Z</span>
            </div>
            <div class="turn-content"><p>go ahead</p>
 </div>
        </article>
        <article class="turn turn-assistant" id="turn-3">
            <div class="turn-meta">
                <span class="turn-role">Claude</span>
                <span class="turn-timestamp">2026-03-15T19:03:47.709Z</span>
            </div>
            <div class="turn-content"><p>Let me start by exploring the repository structure and reading all the files that need to be modified.Good, I have a comprehensive understanding of the repository. Now let me read the exact current contents of each file I need to modify.Now let me also read the existing allowlist files and the validate-file-paths hook to understand the exact patterns.I now have full context on every file that needs to change. Let me create tasks to track progress and then execute all the edits.Now the requirements-engineer. This is the most substantial change — making it bimodal.Now update the body content. I’ll replace the inputs section and add operating modes, then add corrective drafting rules after guardrails.Now add corrective drafting rules and traceability updates after the Guardrails section.Now the executor — add maintenance execution rules and citation authority before the agentic components section.Now the test-engineer — add verification summary format and test mutation policy after the completion summary section.Now code-reviewer — add future-change probe after the completion line.Now eval-engineer — add maintenance evals before the completion section.Now create the new allowlist file.All edits are done. Let me verify the final state of each modified file to make sure everything is clean.All files look correct. Let me now run the existing tests to make sure nothing is broken.The evals check inventory counts. I need to update:</p>
 <ol>
 <li><code>allowlist_inventory.json</code> — add <code>regression-ledger.regex</code> and bump count to 13</li>
 <li><code>skills/init/SKILL.md</code> — the template must match <a href="http://CLAUDE.md">CLAUDE.md</a> content</li>
 </ol>
 <p>Let me read the template first.I need to update three more files to keep the evals passing:</p>
 <ol>
 <li><code>SKILL.md</code> template — sync with the new <a href="http://CLAUDE.md">CLAUDE.md</a></li>
 <li><code>allowlist_inventory.json</code> — add the new allowlist file</li>
 <li><code>template_sections.json</code> — add the new headingNow let me run the eval suite to verify everything passes.All 27 evals pass. Here’s a summary of everything that was changed:</li>
 </ol>
 <h2>Changes Summary</h2>
 <h3>Files modified (7):</h3>
 <table>
 <thead>
 <tr>
 <th>File</th>
 <th>Change</th>
 </tr>
 </thead>
 <tbody>
 <tr>
 <td><strong><a href="http://CLAUDE.md">CLAUDE.md</a></strong></td>
 <td>Added <code>## Maintenance / Regression Loop</code> section with local-vs-non-local classification, regression ledger recording, corrective mode delegation, amendment-vs-invalidation routing, and 3-cycle cap</td>
 </tr>
 <tr>
 <td><strong>plugin/agents/requirements-engineer.md</strong></td>
 <td>Updated description to bimodal; added corrective mode inputs, operating modes (baseline/corrective), corrective drafting rules, and traceability updates for corrective mode</td>
 </tr>
 <tr>
 <td><strong>plugin/agents/executor.md</strong></td>
 <td>Added maintenance execution rules (scope discipline, local self-correction, non-local escalation) and citation authority during corrective execution</td>
 </tr>
 <tr>
 <td><strong>plugin/agents/test-engineer.md</strong></td>
 <td>Added structured verification summary format (baseline/regressed/flaky/changed-file) and test mutation policy with classification and REQ ID citation rules</td>
 </tr>
 <tr>
 <td><strong>plugin/agents/code-reviewer.md</strong></td>
 <td>Added future-change probe (plausible next requirement, easier/neutral/harder assessment, rigidity detection)</td>
 </tr>
 <tr>
 <td><strong>plugin/agents/eval-engineer.md</strong></td>
 <td>Added maintenance evals section (sequential change sequences, metrics for regression-free completion, diff growth, interface churn, corrective cycle count)</td>
 </tr>
 <tr>
 <td><strong>plugin/skills/init/SKILL.md</strong></td>
 <td>Synced template with updated <a href="http://CLAUDE.md">CLAUDE.md</a></td>
 </tr>
 </tbody>
 </table>
 <h3>Files created (1):</h3>
 <table>
 <thead>
 <tr>
 <th>File</th>
 <th>Contents</th>
 </tr>
 </thead>
 <tbody>
 <tr>
 <td><strong>plugin/allowlists/regression-ledger.regex</strong></td>
 <td><code>^spec/regression-ledger\.md$</code></td>
 </tr>
 </tbody>
 </table>
 <h3>Golden files updated (2):</h3>
 <table>
 <thead>
 <tr>
 <th>File</th>
 <th>Change</th>
 </tr>
 </thead>
 <tbody>
 <tr>
 <td><strong>evals/goldens/allowlist_inventory.json</strong></td>
 <td>Added <code>regression-ledger.regex</code>, bumped count 12→13</td>
 </tr>
 <tr>
 <td><strong>evals/goldens/template_sections.json</strong></td>
 <td>Added <code>Maintenance / Regression Loop</code> to required headings</td>
 </tr>
 </tbody>
 </table>
 <h3>Access model for <code>spec/regression-ledger.md</code>:</h3>
 <ul>
 <li><strong>Write</strong>: Orchestrator (main conversation, not hook-gated) and test-engineer (already covered by its <code>^spec/.*\.md$</code> allowlist pattern)</li>
 <li><strong>Read</strong>: requirements-engineer, design-architect, executor (Read isn’t gated by allowlists)</li>
 </ul>
 </div>
            <details class="thinking-block">
                <summary>Thinking</summary>
                <div class="thinking-content"><p>Now I have a thorough understanding of all the files. Let me create a task list and proceed with the implementation. The changes needed are:</p>
 <ol>
 <li>
 <p><strong><a href="http://CLAUDE.md">CLAUDE.md</a></strong> - Add “Maintenance / Regression Loop” section</p>
 </li>
 <li>
 <p><strong><a href="http://requirements-engineer.md">requirements-engineer.md</a></strong> - Update description and add corrective mode</p>
 </li>
 <li>
 <p><strong><a href="http://executor.md">executor.md</a></strong> - Add maintenance execution rules</p>
 </li>
 <li>
 <p><strong><a href="http://test-engineer.md">test-engineer.md</a></strong> - Add verification summary format and test mutation policy</p>
 </li>
 <li>
 <p><strong><a href="http://code-reviewer.md">code-reviewer.md</a></strong> - Add future-change probe</p>
 </li>
 <li>
 <p><strong><a href="http://eval-engineer.md">eval-engineer.md</a></strong> - Add maintenance evals</p>
 </li>
 <li>
 <p><strong>New file: allowlists/regression-ledger.regex</strong> - Allowlist for spec/regression-ledger.md</p>
 </li>
 <li>
 <p><strong>Update allowlists</strong> - The orchestrator records the ledger directly in the main conversation, so it bypasses validate-file-paths hooks, but I need to check if requirements-engineer needs write access to the regression-ledger through its allowlist configuration.</p>
 </li>
 <li>
 <p><strong>Update agent frontmatter</strong> - Looking back at the spec, test-engineer may append to the changed-file summary, which means test-engineer needs write access and would require an allowlist update. Requirements-engineer and design-architect only need read access, which doesn’t trigger allowlist constraints. The key insight is that the orchestrator (main conversation) writes files directly without going through agent hooks, so it can write the regression ledger without needing allowlist entries.</p>
 </li>
 </ol>
 <p>Let me verify test-engineer’s existing allowlist pattern to see if spec/regression-ledger.md is already covered…</p>
 <p>Checking the allowlist pattern…</p>
 <p>Actually, I see that test-engineer’s allowlist includes <code>^spec/.*\.md$</code>, which would already match spec/regression-ledger.md, so they already have write access. For requirements-engineer, their allowlist is restricted to just <code>^spec/requirements\.md$</code>, but based on the user’s requirements, only orchestrator and test-engineer need write access to the regression ledger anyway.</p>
 <p>The user explicitly requested a new allowlist file for regression-ledger.regex, so I should create that even though test-engineer’s pattern already covers it—it would be useful for more granular control if we want to restrict other agents in the future. I’m settling on the file structure and noting that requirements-engineer doesn’t need allowlist updates since read access isn’t controlled that way. Now I need to map out where the Maintenance / Regression Loop section fits in <a href="http://CLAUDE.md">CLAUDE.md</a>—it logically belongs after the Post-Execution Workflow since it describes a variant flow triggered during that phase. the requirements-engineer already has write access to spec/requirements.md, so it can make corrective updates there. For the remaining files, I need to add specific sections to executor, test-engineer, code-reviewer, and eval-engineer that address maintenance and verification workflows, then create the regression-ledger allowlist file. I should also check whether design-architect needs explicit write access to the regression ledger or if read-only is sufficient. we update the <a href="http://design-architect.md">design-architect.md</a> to mention it can read the regression ledger as context? The user’s spec doesn’t explicitly ask for changes to <a href="http://design-architect.md">design-architect.md</a>, so I’ll skip that.</p>
 <p>Let me now implement all the changes. I’ll create task items for tracking and then execute them.</p>
 <p>Actually, let me just proceed with the edits since the user already said “go ahead” and I have full context. I’ll create tasks for tracking and then execute.</p>
 <p>Let me be precise about the edits:</p>
 <p><strong><a href="http://CLAUDE.md">CLAUDE.md</a></strong> — Insert after line 148 (after the Safety section, before Notes):</p>
 <p>I’m adding a new Maintenance / Regression Loop section that outlines how to handle verification failures. It covers classifying failures as local or non-local, recording details in a regression ledger, delegating to the requirements-engineer for corrective action, and then assessing whether the fix is an amendment or a full redesign. I need to substantially revise <a href="http://requirements-engineer.md">requirements-engineer.md</a> by updating the frontmatter description, adding corrective mode inputs and operating modes sections, and incorporating corrective drafting rules and traceability updates—the requirements-engineer only needs read access to the regression ledger so no allowlist changes are required. For <a href="http://executor.md">executor.md</a>, I’ll insert the maintenance execution rules into the existing structure, likely before the agentic components section, though I’m still deciding on the exact placement.</p>
 <p>Now I’m mapping out where each new section goes across the remaining files: <a href="http://test-engineer.md">test-engineer.md</a> gets verification summary and test mutation policy sections, <a href="http://code-reviewer.md">code-reviewer.md</a> gets a future-change probe section, and <a href="http://eval-engineer.md">eval-engineer.md</a> gets a maintenance evals section. Let me organize the full task list and start executing these edits.</p>
 </div>
            </details>
            <details class="thinking-block">
                <summary>Thinking</summary>
                <div class="thinking-content"><p>I see there are evals that check for specific inventory counts. The key ones that could be affected by my changes:</p>
 <ol>
 <li>
 <p><strong>EVAL-INV-004</strong>: Checks for exactly 12 allowlist files. I added <code>regression-ledger.regex</code>, making it 13. I need to update <code>allowlist_inventory.json</code>.</p>
 </li>
 <li>
 <p><strong>EVAL-TPL-001</strong>: Checks that <code>skills/init/SKILL.md</code> template matches <code>CLAUDE.md</code> content. Since I modified <code>CLAUDE.md</code>, the template will be out of sync. I need to update the <a href="http://SKILL.md">SKILL.md</a> template too.</p>
 </li>
 </ol>
 <p>Let me check the <a href="http://SKILL.md">SKILL.md</a> template and update both the golden files and the template.</p>
 </div>
            </details>
            <details class="thinking-block">
                <summary>Thinking</summary>
                <div class="thinking-content"><p>I need to:</p>
 <ol>
 <li>Update the <a href="http://SKILL.md">SKILL.md</a> template to match the new <a href="http://CLAUDE.md">CLAUDE.md</a> (add the Maintenance / Regression Loop section)</li>
 <li>Update <code>allowlist_inventory.json</code> to include <code>regression-ledger.regex</code> and bump count to 13</li>
 <li>Update <code>template_sections.json</code> to include the new “Maintenance / Regression Loop” heading</li>
 </ol>
 <p>Let me do all three.</p>
 </div>
            </details>
            <details class="sub-agent-card" open>
                <summary class="sub-agent-header">
                    <span class="sub-agent-type">Explore</span>
                    <span>Explore repo structure</span>
                </summary>
                <div class="sub-agent-body">
                    <div class="sub-agent-meta">Duration: 119.5s • Tool uses: 28</div>
                    <div class="sub-agent-summary">Excellent! Now I have a comprehensive understanding of the System2 repository. Let me create a detailed summary document for you:

 ## System2 Repository Structure - Complete Exploration Report

 ### Repository Overview

 This is the **System2** orchestration framework for Claude Code, located at `/Users/james/Documents/GitHub/System2`. It&#x27;s a specification-driven, agent-delegating system that enforces quality gates and implements multi-stage workflows for reliable AI-assisted development.

 ---

 ##...</div>
                    <div class="sub-agent-turns">
                        <div class="sub-agent-turn sub-agent-turn-user">
                            <div class="sub-agent-turn-role">User</div>
                            <div class="sub-agent-turn-content"><p>Explore the System2 repository structure thoroughly. I need to understand:</p>
 <ol>
 <li>The overall directory layout (especially agents/, allowlists/, hooks/, spec/, .claude/)</li>
 <li>All agent definition files (look for <a href="http://requirements-engineer.md">requirements-engineer.md</a>, <a href="http://executor.md">executor.md</a>, <a href="http://test-engineer.md">test-engineer.md</a>, <a href="http://code-reviewer.md">code-reviewer.md</a>, <a href="http://eval-engineer.md">eval-engineer.md</a> and any others)</li>
 <li>All allowlist files (*.regex or similar)</li>
 <li>The hooks/validate-file-paths.py file</li>
 <li>The current <a href="http://CLAUDE.md">CLAUDE.md</a> content</li>
 <li>Any .claude/settings.json or .claude/rules/*.md files</li>
 </ol>
 <p>Be very thorough - list all files in agents/, allowlists/, hooks/ directories. Read the full contents of:</p>
 <ul>
 <li><a href="http://CLAUDE.md">CLAUDE.md</a></li>
 <li>All agent .md files that will be modified (requirements-engineer, executor, test-engineer, code-reviewer, eval-engineer)</li>
 <li>All allowlist .regex files</li>
 <li>hooks/validate-file-paths.py</li>
 </ul>
 <p>Return the complete contents of each file so I can plan the edits.</p>
 </div>
                        </div>
                        <div class="sub-agent-turn sub-agent-turn-assistant">
                            <div class="sub-agent-turn-role">Assistant</div>
                            <div class="sub-agent-turn-content"><p>I’ll conduct a thorough exploration of the System2 repository structure. Let me start by mapping out the directory layout and then reading the key files.Now let me get a complete directory listing and then read all the key files:Now let me read all the key files. I’ll start with <a href="http://CLAUDE.md">CLAUDE.md</a> and the settings file, then read all agent files and allowlists:Now let me read all the agent files:Now let me read the eval-engineer and the remaining key agents:Now let me read the remaining agent files and all allowlist files:Now let me read all the allowlist files:Now let me read the hook files to understand the validation and other mechanisms:Now let me read the dangerous-commands-allowlist.regex and sensitive-patterns.regex files:Perfect! Now let me create a comprehensive summary document. Let me check if there are any other hook files I need to read:Excellent! Now I have a comprehensive understanding of the System2 repository. Let me create a detailed summary document for you:</p>
 <h2>System2 Repository Structure - Complete Exploration Report</h2>
 <h3>Repository Overview</h3>
 <p>This is the <strong>System2</strong> orchestration framework for Claude Code, located at <code>/Users/james/Documents/GitHub/System2</code>. It’s a specification-driven, agent-delegating system that enforces quality gates and implements multi-stage workflows for reliable AI-assisted development.</p>
 <hr>
 <h2>1. Directory Structure</h2>
 <pre><code>/Users/james/Documents/GitHub/System2/
 ├── .claude/                          # Claude Code settings
 │   └── settings.local.json          # Local tool permissions
 ├── plugin/                          # Claude Code plugin with agents and hooks
 │   ├── agents/                      # 13 agent definitions (*.md)
 │   ├── allowlists/                  # 12 file-path allowlist patterns (*.regex)
 │   ├── hooks/                       # 6 validation/safety hooks (*.py)
 │   └── .claude-plugin/              # Plugin configuration
 ├── spec-0/ and spec-1/              # Historical spec artifacts
 ├── evals/                           # Evaluation framework (minimal)
 ├── .git/                            # Version control
 ├── CLAUDE.md                        # Main orchestrator instructions (154 lines)
 ├── README.md                        # Project documentation
 ├── CHANGELOG.md                     # Release notes
 ├── LICENSE                          # MIT
 ├── requirements-dev.txt             # Dev dependencies
 └── VERSION                          # Current version
 </code></pre>
 <hr>
 <h2>2. Agent Definitions (13 files in <code>/plugin/agents/</code>)</h2>
 <p>All agents follow a frontmatter YAML structure with name, description, tools, and hooks configuration.</p>
 <h3>Key Agents (for modification planning):</h3>
 <h4>1. <strong><a href="http://requirements-engineer.md">requirements-engineer.md</a></strong></h4>
 <ul>
 <li><strong>Purpose</strong>: Translates spec/context.md into EARS-format requirements</li>
 <li><strong>Tools</strong>: Read, Edit, Write, Grep, Glob</li>
 <li><strong>Hooks</strong>:
 <ul>
 <li>PreToolUse: sensitive-file-protector, validate-file-paths (spec-requirements.regex)</li>
 <li>SubagentStop: tts-notify</li>
 </ul>
 </li>
 <li><strong>Output</strong>: spec/requirements.md</li>
 <li><strong>Key Sections in Generated File</strong>:
 <ul>
 <li>Functional Requirements (EARS-style: REQ-001, REQ-002, …)</li>
 <li>Data &amp; Interface Contracts</li>
 <li>Error Handling &amp; Recovery</li>
 <li>Performance &amp; Scalability</li>
 <li>Security &amp; Privacy</li>
 <li>Observability</li>
 <li>Backward Compatibility &amp; Migration</li>
 <li>Compliance / Policy Constraints</li>
 <li>Validation Plan</li>
 <li>Traceability Matrix</li>
 </ul>
 </li>
 </ul>
 <h4>2. <strong><a href="http://executor.md">executor.md</a></strong></h4>
 <ul>
 <li><strong>Purpose</strong>: Implements approved tasks from spec/tasks.md</li>
 <li><strong>Tools</strong>: Read, Edit, Write, Grep, Glob, Bash</li>
 <li><strong>Hooks</strong>:
 <ul>
 <li>PreToolUse: dangerous-command-blocker, sensitive-file-protector, validate-file-paths (executor.regex)</li>
 <li>PostToolUse: auto-formatter, type-checker</li>
 <li>SubagentStop: tts-notify</li>
 </ul>
 </li>
 <li><strong>Contract</strong>: spec/tasks.md is the single source of truth</li>
 <li><strong>Verification Loop</strong>: Red (test fails) → Green (minimal impl) → Refactor (lint/format) → Verify (all tests pass)</li>
 <li><strong>Self-correction limit</strong>: 2 attempts before escalation</li>
 </ul>
 <h4>3. <strong><a href="http://test-engineer.md">test-engineer.md</a></strong></h4>
 <ul>
 <li><strong>Purpose</strong>: Runs verification, adds/updates tests, triages failures</li>
 <li><strong>Tools</strong>: Read, Edit, Write, Grep, Glob, Bash</li>
 <li><strong>Hooks</strong>:
 <ul>
 <li>PreToolUse: dangerous-command-blocker, sensitive-file-protector, validate-file-paths (test-engineer.regex)</li>
 <li>PostToolUse: auto-formatter, type-checker</li>
 <li>SubagentStop: tts-notify</li>
 </ul>
 </li>
 <li><strong>Allowed Edits</strong>: Test files, test harness/config, spec/docs notes</li>
 <li><strong>Boomerang</strong>: If fixes needed in production code, delegates back to executor</li>
 </ul>
 <h4>4. <strong><a href="http://code-reviewer.md">code-reviewer.md</a></strong></h4>
 <ul>
 <li><strong>Purpose</strong>: Senior-level review of diffs (read-only review mode)</li>
 <li><strong>Tools</strong>: Read, Grep, Glob, Bash (no Edit/Write)</li>
 <li><strong>Hooks</strong>:
 <ul>
 <li>PreToolUse: dangerous-command-blocker, sensitive-file-protector</li>
 <li>SubagentStop: tts-notify</li>
 </ul>
 </li>
 <li><strong>Review Checklist</strong>: Spec alignment, API hygiene, maintainability, performance, reliability, observability, tests, security</li>
 <li><strong>Output Levels</strong>: Blockers, Should fix, Nice to have, Questions</li>
 </ul>
 <h4>5. <strong><a href="http://eval-engineer.md">eval-engineer.md</a></strong></h4>
 <ul>
 <li><strong>Purpose</strong>: Creates regression evals for LLM/agentic features</li>
 <li><strong>Tools</strong>: Read, Edit, Write, Grep, Glob, Bash</li>
 <li><strong>Hooks</strong>:
 <ul>
 <li>PreToolUse: dangerous-command-blocker, sensitive-file-protector, validate-file-paths (spec-evals.regex)</li>
 <li>PostToolUse: auto-formatter, type-checker</li>
 <li>SubagentStop: tts-notify</li>
 </ul>
 </li>
 <li><strong>Outputs</strong>: spec/evals.md (plan), evals/ (harness)</li>
 <li><strong>Coverage</strong>: Failure modes, metrics, golden dataset strategy</li>
 </ul>
 <h3>Other Agents (Core Framework):</h3>
 <table>
 <thead>
 <tr>
 <th>Agent</th>
 <th>Purpose</th>
 <th>Primary Output</th>
 </tr>
 </thead>
 <tbody>
 <tr>
 <td><strong>spec-coordinator</strong></td>
 <td>Drafts context spec</td>
 <td>spec/context.md</td>
 </tr>
 <tr>
 <td><strong>design-architect</strong></td>
 <td>Creates technical design</td>
 <td>spec/design.md</td>
 </tr>
 <tr>
 <td><strong>task-planner</strong></td>
 <td>Atomizes tasks</td>
 <td>spec/tasks.md</td>
 </tr>
 <tr>
 <td><strong>security-sentinel</strong></td>
 <td>Threat modeling &amp; review</td>
 <td>spec/security.md</td>
 </tr>
 <tr>
 <td><strong>docs-release</strong></td>
 <td>User docs &amp; release notes</td>
 <td><a href="http://README.md">README.md</a>, <a href="http://CHANGELOG.md">CHANGELOG.md</a>, docs/*</td>
 </tr>
 <tr>
 <td><strong>repo-governor</strong></td>
 <td>Governance &amp; topology</td>
 <td><a href="http://CLAUDE.md">CLAUDE.md</a>, .claude/settings.json</td>
 </tr>
 <tr>
 <td><strong>postmortem-scribe</strong></td>
 <td>Incident postmortems</td>
 <td>postmortems/YYYY-MM-DD-*.md</td>
 </tr>
 <tr>
 <td><strong>mcp-toolsmith</strong></td>
 <td>MCP tool design</td>
 <td>spec/mcp.md, mcp/*</td>
 </tr>
 </tbody>
 </table>
 <hr>
 <h2>3. Allowlist Files (12 files in <code>/plugin/allowlists/</code>)</h2>
 <p>These are regex patterns used by <code>validate-file-paths.py</code> to restrict what files agents can edit:</p>
 <table>
 <thead>
 <tr>
 <th>File</th>
 <th>Pattern</th>
 <th>Purpose</th>
 </tr>
 </thead>
 <tbody>
 <tr>
 <td><strong>spec-context.regex</strong></td>
 <td><code>^spec/context\.md$</code></td>
 <td>Context coordinator only</td>
 </tr>
 <tr>
 <td><strong>spec-requirements.regex</strong></td>
 <td><code>^spec/requirements\.md$</code></td>
 <td>Requirements engineer only</td>
 </tr>
 <tr>
 <td><strong>spec-design.regex</strong></td>
 <td><code>^spec/design\.md$</code></td>
 <td>Design architect only</td>
 </tr>
 <tr>
 <td><strong>spec-tasks.regex</strong></td>
 <td><code>^spec/tasks\.md$</code></td>
 <td>Task planner only</td>
 </tr>
 <tr>
 <td><strong>spec-security.regex</strong></td>
 <td><code>^spec/security\.md$</code></td>
 <td>Security sentinel only</td>
 </tr>
 <tr>
 <td><strong>spec-evals.regex</strong></td>
 <td><code>^(spec/evals\.md|evals/.*\.(md|py|yaml|yml|json|toml))$</code></td>
 <td>Eval engineer only</td>
 </tr>
 <tr>
 <td><strong>executor.regex</strong></td>
 <td>Complex: allows src code, tests, build files (*.py, *.go, *.ts, etc.), excludes vendor/node_modules/dist</td>
 <td>Implementation code</td>
 </tr>
 <tr>
 <td><strong>test-engineer.regex</strong></td>
 <td>Complex: allows test files, config, spec/docs, excludes vendor/node_modules/dist</td>
 <td>Test files only</td>
 </tr>
 <tr>
 <td><strong>docs-release.regex</strong></td>
 <td><code>^(README\.md|CHANGELOG\.md|MIGRATIONS\.md|docs/.*\.md|spec/.*\.md)$</code></td>
 <td>Docs &amp; release notes</td>
 </tr>
 <tr>
 <td><strong>repo-governor.regex</strong></td>
 <td><code>^(CLAUDE\.md|AGENTS\.md|\.claude/settings\.json|spec/INDEX\.md)$</code></td>
 <td>Governance files only</td>
 </tr>
 <tr>
 <td><strong>mcp.regex</strong></td>
 <td><code>^(spec/mcp\.md|mcp/.*\.(md|py|ts|js|json|yaml|yml))$</code></td>
 <td>MCP specs &amp; implementation</td>
 </tr>
 <tr>
 <td><strong>postmortems.regex</strong></td>
 <td><code>^postmortems/.*\.md$</code></td>
 <td>Incident postmortems only</td>
 </tr>
 </tbody>
 </table>
 <hr>
 <h2>4. Hook System (6 Python hooks in <code>/plugin/hooks/</code>)</h2>
 <h3>Hook Architecture</h3>
 <ul>
 <li><strong>PreToolUse</strong>: Executed before tool runs; can block (exit 2) or allow (exit 0)</li>
 <li><strong>PostToolUse</strong>: Executed after tool completion; informational only (always exit 0)</li>
 <li><strong>SubagentStop</strong>: Executed when agent completes</li>
 <li><strong>Environment Variables</strong>: <code>TOOL_NAME</code>, <code>TOOL_INPUT</code> (JSON)</li>
 </ul>
 <h3>Hooks Overview</h3>
 <h4>1. <strong><a href="http://validate-file-paths.py">validate-file-paths.py</a></strong> (2,910 bytes)</h4>
 <ul>
 <li><strong>Trigger</strong>: PreToolUse on any tool with file paths</li>
 <li><strong>Function</strong>: Validates file_path, filepath, path, target_file, filename, file keys against allowlist regex</li>
 <li><strong>Logic</strong>:
 <ol>
 <li>Load allowlist patterns from file (regex)</li>
 <li>Recursively extract paths from TOOL_INPUT JSON</li>
 <li>Normalize paths (absolute/relative/tilde expansion/symlink resolution)</li>
 <li>Match against allowlist</li>
 </ol>
 </li>
 <li><strong>Exit Codes</strong>: 0 (allowed), 1 (blocked/error)</li>
 <li><strong>Used by</strong>: All agents with file write restrictions</li>
 </ul>
 <p><strong>Key Functions</strong>:</p>
 <pre><code class="language-python"><span class="k">def</span><span class="w"> </span><span class="nf">load_patterns</span><span class="p">(</span><span class="n">file_path</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">re</span><span class="o">.</span><span class="n">Pattern</span><span class="p">:</span>
    <span class="c1"># Loads regex patterns from file, combines with |, returns compiled regex</span>

 <span class="k">def</span><span class="w"> </span><span class="nf">collect_paths</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">results</span><span class="p">):</span>
    <span class="c1"># Recursively walks JSON to extract file paths</span>

 <span class="k">def</span><span class="w"> </span><span class="nf">normalize_candidates</span><span class="p">(</span><span class="n">path</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">list</span><span class="p">:</span>
    <span class="c1"># Handles ./, absolute, relative, tilde expansion</span>
 </code></pre>
 <h4>2. <strong><a href="http://dangerous-command-blocker.py">dangerous-command-blocker.py</a></strong> (&gt;100 lines)</h4>
 <ul>
 <li><strong>Trigger</strong>: PreToolUse on Bash</li>
 <li><strong>Blocked Patterns</strong>:
 <ul>
 <li><code>rm -rf /</code> or <code>rm -rf /*</code> (root filesystem)</li>
 <li><code>rm -rf .</code> (current directory)</li>
 <li><code>rm -rf ..</code> (parent directory)</li>
 <li><code>sudo rm -rf</code> (elevated privileges)</li>
 <li><code>chmod 777</code> (world-writable)</li>
 <li><code>git reset --hard</code> (loses uncommitted changes)</li>
 <li><code>git push --force</code> to main/master</li>
 <li><code>DROP TABLE</code> (SQL)</li>
 <li><code>DELETE FROM</code> without WHERE clause</li>
 </ul>
 </li>
 <li><strong>Bypass Allowlist</strong>: dangerous-commands-allowlist.regex (examples only, all commented)</li>
 <li><strong>Exit Codes</strong>: 0 (allowed), 2 (blocked with JSON reason)</li>
 </ul>
 <h4>3. <strong><a href="http://sensitive-file-protector.py">sensitive-file-protector.py</a></strong> (&gt;100 lines)</h4>
 <ul>
 <li><strong>Trigger</strong>: PreToolUse on Read, Edit, Write, Bash</li>
 <li><strong>Default Protected Patterns</strong>:
 <ul>
 <li><code>.env</code> and <code>.env.*</code></li>
 <li><code>~/.ssh/</code>, <code>~/.aws/</code>, <code>~/.gnupg/</code></li>
 <li>Files with “credentials” or “secrets” (case-insensitive)</li>
 <li><code>*.pem</code>, <code>*.key</code>, <code>id_rsa</code>, <code>id_ed25519</code>, <code>id_ecdsa</code></li>
 <li><code>.netrc</code>, <code>.npmrc</code>, <code>.pypirc</code></li>
 </ul>
 </li>
 <li><strong>Additional Patterns</strong>: sensitive-patterns.regex (examples only, all commented)</li>
 <li><strong>Path Normalization</strong>: Expands ~, resolves symlinks, handles relative paths</li>
 <li><strong>Exit Codes</strong>: 0 (allowed), 2 (blocked with JSON reason)</li>
 </ul>
 <h4>4. <strong><a href="http://auto-formatter.py">auto-formatter.py</a></strong></h4>
 <ul>
 <li><strong>Trigger</strong>: PostToolUse on Edit, Write</li>
 <li><strong>Supported Formatters</strong>:
 <ul>
 <li><code>.js</code>, <code>.jsx</code>, <code>.ts</code>, <code>.tsx</code>, <code>.json</code>, <code>.md</code>, <code>.css</code>, <code>.html</code> → prettier</li>
 <li><code>.py</code> → black</li>
 <li><code>.go</code> → gofmt</li>
 </ul>
 </li>
 <li><strong>Behavior</strong>: Checks if formatter installed, runs with 30-sec timeout, always exits 0</li>
 <li><strong>Exit Codes</strong>: 0 (always)</li>
 </ul>
 <h4>5. <strong><a href="http://type-checker.py">type-checker.py</a></strong></h4>
 <ul>
 <li><strong>Trigger</strong>: PostToolUse on Edit, Write</li>
 <li><strong>Supported Checkers</strong>:
 <ul>
 <li><code>.ts</code>, <code>.tsx</code> → tsc --noEmit</li>
 <li><code>.py</code> → mypy</li>
 </ul>
 </li>
 <li><strong>Behavior</strong>: Runs on single file, logs errors to stderr, always exits 0</li>
 <li><strong>Exit Codes</strong>: 0 (always, informational)</li>
 </ul>
 <h4>6. <strong><a href="http://tts-notify.py">tts-notify.py</a></strong></h4>
 <ul>
 <li><strong>Trigger</strong>: Stop, SubagentStop</li>
 <li><strong>Announces</strong>: “Task complete” or “Subagent complete” via platform TTS</li>
 <li><strong>Platform Support</strong>: macOS (say), Windows (PowerShell SpeechSynthesizer), Linux (espeak/spd-say)</li>
 <li><strong>Behavior</strong>: Fails silently if unavailable</li>
 <li><strong>Exit Codes</strong>: 0 (always)</li>
 </ul>
 <h3>Hook Utilities: <strong>_hook_utils.py</strong> (268 lines)</h3>
 <p>Shared library for all hooks:</p>
 <pre><code class="language-python"><span class="k">def</span><span class="w"> </span><span class="nf">load_patterns</span><span class="p">(</span><span class="n">file_path</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">re</span><span class="o">.</span><span class="n">Pattern</span>
 <span class="k">def</span><span class="w"> </span><span class="nf">collect_paths</span><span class="p">(</span><span class="n">value</span><span class="p">:</span> <span class="n">Any</span><span class="p">,</span> <span class="n">results</span><span class="p">:</span> <span class="nb">list</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span>
 <span class="k">def</span><span class="w"> </span><span class="nf">normalize_path</span><span class="p">(</span><span class="n">path</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">list</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span>
 <span class="k">def</span><span class="w"> </span><span class="nf">block_response</span><span class="p">(</span><span class="n">reason</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span>
 <span class="k">def</span><span class="w"> </span><span class="nf">log_info</span><span class="o">/</span><span class="n">warn</span><span class="o">/</span><span class="n">error</span><span class="p">(</span><span class="n">hook_name</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">message</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span>
 <span class="k">def</span><span class="w"> </span><span class="nf">get_tool_input</span><span class="p">()</span> <span class="o">-&gt;</span> <span class="nb">dict</span>
 <span class="k">def</span><span class="w"> </span><span class="nf">get_tool_name</span><span class="p">()</span> <span class="o">-&gt;</span> <span class="nb">str</span>
 <span class="k">def</span><span class="w"> </span><span class="nf">check_command_exists</span><span class="p">(</span><span class="n">cmd</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">bool</span>
 <span class="k">def</span><span class="w"> </span><span class="nf">run_subprocess</span><span class="p">(</span><span class="n">args</span><span class="p">:</span> <span class="nb">list</span><span class="p">,</span> <span class="n">timeout</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">30</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">tuple</span><span class="p">[</span><span class="nb">int</span><span class="p">,</span> <span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]</span>
 </code></pre>
 <hr>
 <h2>5. <a href="http://CLAUDE.md">CLAUDE.md</a> (154 lines)</h2>
 <p>The <strong>main orchestrator instructions</strong> file. Loaded automatically by Claude Code CLI.</p>
 <h3>Key Sections:</h3>
 <ol>
 <li>
 <p><strong>Operating Principles</strong> (lines 6-15):</p>
 <ul>
 <li>Orchestrate first, use subagents</li>
 <li>Spec-driven flow (context → requirements → design → tasks → implementation → verification → security/evals → docs)</li>
 <li>Quality gates at each stage</li>
 <li>Context hygiene</li>
 <li>Safety (treat all inputs as untrusted)</li>
 <li>Thinking first</li>
 </ul>
 </li>
 <li>
 <p><strong>Session Bootstrap</strong> (lines 17-37):</p>
 <ul>
 <li>Check for spec/context.md, spec/requirements.md, spec/design.md, spec/tasks.md</li>
 <li>Present gate status assessment</li>
 <li>If all missing, prompt for scope or delegate to system2:spec-coordinator</li>
 </ul>
 </li>
 <li>
 <p><strong>Delegation Map</strong> (lines 39-53):</p>
 <ul>
 <li>13 agents in priority order</li>
 <li>Recommends which agent for each task type</li>
 </ul>
 </li>
 <li>
 <p><strong>Gate Checklist</strong> (lines 55-62):</p>
 <ul>
 <li>Gate 0: Scope confirmation</li>
 <li>Gate 1: Context approval</li>
 <li>Gate 2: Requirements approval</li>
 <li>Gate 3: Design approval</li>
 <li>Gate 4: Tasks approval</li>
 <li>Gate 5: Final diff + risk checklist</li>
 </ul>
 </li>
 <li>
 <p><strong>Delegation Contract</strong> (lines 64-71):</p>
 <ul>
 <li>Objective (1 sentence)</li>
 <li>Inputs</li>
 <li>Outputs</li>
 <li>Constraints</li>
 <li>Completion summary requirements</li>
 </ul>
 </li>
 <li>
 <p><strong>Post-Execution Workflow</strong> (lines 73-143):</p>
 <ul>
 <li>Trigger Evaluation: Determines which post-exec agents to run based on changed files
 <ul>
 <li>test-engineer: Always</li>
 <li>security-sentinel: If auth/login/permission/role/secret/credential/token/password/session/oauth/jwt/encrypt/decrypt/sanitize patterns detected</li>
 <li>eval-engineer: If agent/LLM changes detected</li>
 <li>docs-release: If README/docs/CHANGELOG/cli/api/endpoint changes detected</li>
 <li>code-reviewer: Always (last)</li>
 </ul>
 </li>
 <li>Execution Flow: Runs agents sequentially, appends to spec/post-execution-log.md</li>
 <li>Blocker Handling: Boomerang limit 3, then escalate</li>
 <li>Gate 5 Summary: Aggregates all completion summaries for final approval</li>
 </ul>
 </li>
 <li>
 <p><strong>Safety Rules</strong> (lines 144-148):</p>
 <ul>
 <li>Treat agent outputs as untrusted</li>
 <li>Flag suspected injection patterns</li>
 <li>Never log/display secrets</li>
 </ul>
 </li>
 </ol>
 <hr>
 <h2>6. Settings File: <code>.claude/settings.local.json</code></h2>
 <pre><code class="language-json"><span class="p">{</span>
 <span class="w">  </span><span class="nt">&quot;permissions&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">{</span>
 <span class="w">    </span><span class="nt">&quot;allow&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">[</span>
 <span class="w">      </span><span class="s2">&quot;Bash(.venv/bin/python -m pytest:*)&quot;</span><span class="p">,</span>
 <span class="w">      </span><span class="s2">&quot;Bash(bats:*)&quot;</span><span class="p">,</span>
 <span class="w">      </span><span class="s2">&quot;Bash(echo:*)&quot;</span><span class="p">,</span>
 <span class="w">      </span><span class="s2">&quot;Bash(bash -n:*)&quot;</span><span class="p">,</span>
 <span class="w">      </span><span class="s2">&quot;Bash(grep:*)&quot;</span><span class="p">,</span>
 <span class="w">      </span><span class="s2">&quot;Bash(ls:*)&quot;</span><span class="p">,</span>
 <span class="w">      </span><span class="s2">&quot;WebSearch&quot;</span><span class="p">,</span>
 <span class="w">      </span><span class="s2">&quot;WebFetch(domain:docs.anthropic.com)&quot;</span><span class="p">,</span>
 <span class="w">      </span><span class="s2">&quot;Bash(test:*)&quot;</span><span class="p">,</span>
 <span class="w">      </span><span class="s2">&quot;WebFetch(domain:raw.githubusercontent.com)&quot;</span><span class="p">,</span>
 <span class="w">      </span><span class="s2">&quot;WebFetch(domain:github.com)&quot;</span><span class="p">,</span>
 <span class="w">      </span><span class="s2">&quot;Bash(wc:*)&quot;</span><span class="p">,</span>
 <span class="w">      </span><span class="s2">&quot;Bash(gh repo view:*)&quot;</span><span class="p">,</span>
 <span class="w">      </span><span class="s2">&quot;Bash(gh search code:*)&quot;</span><span class="p">,</span>
 <span class="w">      </span><span class="s2">&quot;WebFetch(domain:claudelog.com)&quot;</span>
 <span class="w">    </span><span class="p">]</span>
 <span class="w">  </span><span class="p">}</span>
 <span class="p">}</span>
 </code></pre>
 <p>This grants specific tool permissions (test running, package checking, web fetch to trusted domains).</p>
 <hr>
 <h2>7. Pattern Files (Allowlists for Hooks)</h2>
 <h3>dangerous-commands-allowlist.regex</h3>
 <ul>
 <li><strong>Purpose</strong>: OVERRIDE dangerous-command-blocker patterns (all examples commented out)</li>
 <li><strong>Examples</strong> (commented):<pre><code># Allow force push to hotfix branches
 # ^git push --force origin hotfix-.*$

 # Allow rm -rf on specific safe directories
 # ^rm -rf \./node_modules$
 # ^rm -rf \./dist$

 # Allow git reset --hard HEAD
 # ^git reset --hard HEAD$

 # Allow DROP TABLE in test databases
 # ^.*DROP TABLE IF EXISTS test_.*$
 </code></pre>
 </li>
 </ul>
 <h3>sensitive-patterns.regex</h3>
 <ul>
 <li><strong>Purpose</strong>: EXTEND sensitive-file-protector patterns (all examples commented out)</li>
 <li><strong>Examples</strong> (commented):<pre><code># Custom secrets directories
 # (^|/)custom-secrets/

 # API key files
 # (?i)api[_-]?key

 # Database config files
 # (^|/)database\.yml$

 # Cloud credentials
 # (^|/)\.terraform/
 # (^|/)\.kube/config$
 </code></pre>
 </li>
 </ul>
 <hr>
 <h2>8. Core File Paths &amp; Responsibilities</h2>
 <table>
 <thead>
 <tr>
 <th>Path</th>
 <th>Agent(s)</th>
 <th>Mode</th>
 <th>Purpose</th>
 </tr>
 </thead>
 <tbody>
 <tr>
 <td><strong><a href="http://CLAUDE.md">CLAUDE.md</a></strong></td>
 <td>repo-governor</td>
 <td>Edit</td>
 <td>Main orchestrator instructions</td>
 </tr>
 <tr>
 <td><strong>spec/context.md</strong></td>
 <td>spec-coordinator</td>
 <td>Edit</td>
 <td>Problem statement, goals, constraints</td>
 </tr>
 <tr>
 <td><strong>spec/requirements.md</strong></td>
 <td>requirements-engineer</td>
 <td>Edit</td>
 <td>EARS-format functional requirements</td>
 </tr>
 <tr>
 <td><strong>spec/design.md</strong></td>
 <td>design-architect</td>
 <td>Edit</td>
 <td>Architecture, data flow, interfaces</td>
 </tr>
 <tr>
 <td><strong>spec/tasks.md</strong></td>
 <td>task-planner</td>
 <td>Edit</td>
 <td>Atomic task graph with verification</td>
 </tr>
 <tr>
 <td><strong>spec/security.md</strong></td>
 <td>security-sentinel</td>
 <td>Edit</td>
 <td>Threat model, abuse cases, findings</td>
 </tr>
 <tr>
 <td><strong>spec/evals.md</strong></td>
 <td>eval-engineer</td>
 <td>Edit</td>
 <td>Eval plan and failure modes</td>
 </tr>
 <tr>
 <td><strong>spec/mcp.md</strong></td>
 <td>mcp-toolsmith</td>
 <td>Edit</td>
 <td>MCP tool specifications</td>
 </tr>
 <tr>
 <td><strong>Implementation files</strong></td>
 <td>executor</td>
 <td>Edit</td>
 <td>Actual code (src/, lib/, etc.)</td>
 </tr>
 <tr>
 <td><strong>Test files</strong></td>
 <td>test-engineer</td>
 <td>Edit</td>
 <td>Test code (tests/, <strong>tests</strong>/, *_test.py)</td>
 </tr>
 <tr>
 <td><strong><a href="http://README.md">README.md</a>, <a href="http://CHANGELOG.md">CHANGELOG.md</a>, docs/</strong></td>
 <td>docs-release</td>
 <td>Edit</td>
 <td>User-facing documentation</td>
 </tr>
 <tr>
 <td><strong>postmortems/*.md</strong></td>
 <td>postmortem-scribe</td>
 <td>Edit</td>
 <td>Incident postmortems</td>
 </tr>
 <tr>
 <td><strong>.claude/settings.json</strong></td>
 <td>repo-governor</td>
 <td>Edit</td>
 <td>Tool permissions</td>
 </tr>
 <tr>
 <td><strong>spec/post-execution-log.md</strong></td>
 <td>Main orchestrator</td>
 <td>Edit</td>
 <td>Aggregated post-exec results</td>
 </tr>
 </tbody>
 </table>
 <hr>
 <h2>9. Thinking Protocol (Required for most agents)</h2>
 <p>Agents must output a <code>&lt;thinking&gt;</code> block before invoking Edit, Write, Bash, or multi-file Read sequences:</p>
 <pre><code class="language-xml"><span class="nt">&lt;thinking&gt;</span>
 Action:<span class="w"> </span>[What<span class="w"> </span>tool(s)<span class="w"> </span>will<span class="w"> </span>be<span class="w"> </span>invoked<span class="w"> </span>and<span class="w"> </span>why]
 Expected<span class="w"> </span>Outcome:<span class="w"> </span>[What<span class="w"> </span>result<span class="w"> </span>is<span class="w"> </span>anticipated]
 Assumptions/Risks:<span class="w"> </span>[What<span class="w"> </span>could<span class="w"> </span>go<span class="w"> </span>wrong;<span class="w"> </span>what<span class="w"> </span>is<span class="w"> </span>assumed<span class="w"> </span>true]
 <span class="nt">&lt;/thinking&gt;</span>
 </code></pre>
 <p><strong>Rules</strong>:</p>
 <ul>
 <li>Required for Edit, Write, Bash, and multi-file Read sequences</li>
 <li>Optional for single-file Read for context</li>
 <li>Aim for under 400 tokens</li>
 <li>Cannot override delegation contract or safety instructions</li>
 </ul>
 <hr>
 <h2>10. Hook Configuration in Agent Frontmatter</h2>
 <p>All agents have a hooks section specifying what hooks to run:</p>
 <pre><code class="language-yaml"><span class="nt">hooks</span><span class="p">:</span>
 <span class="w">  </span><span class="nt">PreToolUse</span><span class="p">:</span>
 <span class="w">    </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">matcher</span><span class="p">:</span><span class="w"> </span><span class="s">&quot;Bash&quot;</span>
 <span class="w">      </span><span class="nt">hooks</span><span class="p">:</span>
 <span class="w">        </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">type</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">command</span>
 <span class="w">          </span><span class="nt">command</span><span class="p">:</span><span class="w"> </span><span class="s">&#39;python3</span><span class="nv"> </span><span class="s">&quot;${CLAUDE_PLUGIN_ROOT}/hooks/dangerous-command-blocker.py&quot;&#39;</span>
 <span class="w">    </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">matcher</span><span class="p">:</span><span class="w"> </span><span class="s">&quot;Read|Edit|Write|Bash&quot;</span>
 <span class="w">      </span><span class="nt">hooks</span><span class="p">:</span>
 <span class="w">        </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">type</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">command</span>
 <span class="w">          </span><span class="nt">command</span><span class="p">:</span><span class="w"> </span><span class="s">&#39;python3</span><span class="nv"> </span><span class="s">&quot;${CLAUDE_PLUGIN_ROOT}/hooks/sensitive-file-protector.py&quot;&#39;</span>
 <span class="w">    </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">matcher</span><span class="p">:</span><span class="w"> </span><span class="s">&quot;Edit|Write&quot;</span>
 <span class="w">      </span><span class="nt">hooks</span><span class="p">:</span>
 <span class="w">        </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">type</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">command</span>
 <span class="w">          </span><span class="nt">command</span><span class="p">:</span><span class="w"> </span><span class="s">&#39;python3</span><span class="nv"> </span><span class="s">&quot;${CLAUDE_PLUGIN_ROOT}/hooks/validate-file-paths.py&quot;</span><span class="nv"> </span><span class="s">&quot;${CLAUDE_PLUGIN_ROOT}/allowlists/executor.regex&quot;&#39;</span>
 <span class="w">  </span><span class="nt">PostToolUse</span><span class="p">:</span>
 <span class="w">    </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">matcher</span><span class="p">:</span><span class="w"> </span><span class="s">&quot;Edit|Write&quot;</span>
 <span class="w">      </span><span class="nt">hooks</span><span class="p">:</span>
 <span class="w">        </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">type</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">command</span>
 <span class="w">          </span><span class="nt">command</span><span class="p">:</span><span class="w"> </span><span class="s">&#39;python3</span><span class="nv"> </span><span class="s">&quot;${CLAUDE_PLUGIN_ROOT}/hooks/auto-formatter.py&quot;&#39;</span>
 <span class="w">        </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">type</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">command</span>
 <span class="w">          </span><span class="nt">command</span><span class="p">:</span><span class="w"> </span><span class="s">&#39;python3</span><span class="nv"> </span><span class="s">&quot;${CLAUDE_PLUGIN_ROOT}/hooks/type-checker.py&quot;&#39;</span>
 <span class="w">  </span><span class="nt">SubagentStop</span><span class="p">:</span>
 <span class="w">    </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">type</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">command</span>
 <span class="w">      </span><span class="nt">command</span><span class="p">:</span><span class="w"> </span><span class="s">&#39;python3</span><span class="nv"> </span><span class="s">&quot;${CLAUDE_PLUGIN_ROOT}/hooks/tts-notify.py&quot;</span><span class="nv"> </span><span class="s">subagent&#39;</span>
 </code></pre>
 <hr>
 <h2>11. Key Design Principles</h2>
 <ol>
 <li><strong>Spec-Driven</strong>: All work flows through documented specs with explicit approval gates</li>
 <li><strong>Delegation-First</strong>: Main orchestrator delegates to specialists, doesn’t implement code</li>
 <li><strong>Small Diffs</strong>: Executor produces reviewable changes; test-engineer validates before merge</li>
 <li><strong>Boomerang-Safe</strong>: If an agent discovers issues during validation, it can bounce work back to executor</li>
 <li><strong>Safety by Default</strong>: Hooks block dangerous operations; allowlists are opt-in, commented</li>
 <li><strong>File-Path Allowlists</strong>: Each agent can only edit specific files (enforced by <a href="http://validate-file-paths.py">validate-file-paths.py</a>)</li>
 <li><strong>Deterministic Verification</strong>: Prefer unit tests, linters, type-checkers; agent evals for non-deterministic behavior</li>
 <li><strong>Traceability</strong>: Requirements → Design → Tasks → Implementation are linked by ID (REQ-001, TASK-001, etc.)</li>
 </ol>
 <hr>
 <h2>12. Summary for Edit Planning</h2>
 <p>If you’re planning edits to any of these files:</p>
 <h3><a href="http://CLAUDE.md">CLAUDE.md</a> Edits</h3>
 <ul>
 <li>Affects: All agent behavior, orchestration flow</li>
 <li>Validators: None (repo-governor maintains it)</li>
 <li>Key Sections: Operating principles, delegation map, gates, post-execution workflow, safety rules</li>
 </ul>
 <h3>Agent *.md Files Edits</h3>
 <ul>
 <li>Each agent is independent</li>
 <li>Affects: What that agent can do, what files it can edit, what hooks run</li>
 <li>Validators: None (each agent is self-contained)</li>
 <li>Frontmatter YAML: name, description, tools, hooks</li>
 <li>Body: Agent-specific instructions and rules</li>
 </ul>
 <h3>Allowlist *.regex Files</h3>
 <ul>
 <li>Affects: What files agents can edit via <a href="http://validate-file-paths.py">validate-file-paths.py</a></li>
 <li>Pattern Format: One regex per line, comments with #, combined with OR</li>
 <li>Validators: <a href="http://validate-file-paths.py">validate-file-paths.py</a> itself</li>
 </ul>
 <h3>Hook *.py Files</h3>
 <ul>
 <li>Affects: What operations are allowed/blocked</li>
 <li>Pattern Files: dangerous-commands-allowlist.regex, sensitive-patterns.regex</li>
 <li>Validators: Hook itself (try/except, exit codes)</li>
 </ul>
 <h3>.claude/settings.local.json</h3>
 <ul>
 <li>Affects: Tool permissions (Bash, WebFetch, WebSearch allowed patterns)</li>
 <li>Validators: Claude Code CLI</li>
 <li>Structure: permissions.allow (list of tool patterns)</li>
 </ul>
 <hr>
 <h2>Final File Inventory</h2>
 <pre><code>/Users/james/Documents/GitHub/System2/plugin/

 agents/ (13 files):
 ├── code-reviewer.md               (46 lines)
 ├── design-architect.md            (86 lines)
 ├── docs-release.md                (52 lines)
 ├── eval-engineer.md               (67 lines)
 ├── executor.md                    (109 lines)
 ├── mcp-toolsmith.md               (74 lines)
 ├── postmortem-scribe.md           (54 lines)
 ├── repo-governor.md               (88 lines)
 ├── requirements-engineer.md       (82 lines)
 ├── security-sentinel.md           (69 lines)
 ├── spec-coordinator.md            (64 lines)
 ├── task-planner.md                (66 lines)
 └── test-engineer.md               (65 lines)

 allowlists/ (12 files):
 ├── docs-release.regex
 ├── executor.regex
 ├── mcp.regex
 ├── postmortems.regex
 ├── repo-governor.regex
 ├── spec-context.regex
 ├── spec-design.regex
 ├── spec-evals.regex
 ├── spec-requirements.regex
 ├── spec-security.regex
 ├── spec-tasks.regex
 └── test-engineer.regex

 hooks/ (6 Python hooks + utilities):
 ├── _hook_utils.py                 (268 lines, shared utilities)
 ├── auto-formatter.py              (4560 bytes)
 ├── dangerous-command-blocker.py   (9956 bytes)
 ├── dangerous-commands-allowlist.regex
 ├── sensitive-file-protector.py    (10599 bytes)
 ├── sensitive-patterns.regex
 ├── type-checker.py                (4161 bytes)
 ├── tts-notify.py                  (2697 bytes)
 ├── validate-file-paths.py         (2910 bytes)
 ├── HOOKS.md                       (15995 bytes, comprehensive docs)
 └── example-hooks-config.md        (7680 bytes)

 Root files:
 ├── CLAUDE.md                      (7380 bytes, 154 lines)
 └── .claude/settings.local.json    (permissions config)
 </code></pre>
 <p>This completes the thorough exploration. You now have all file contents and structure details needed to plan your edits.</p>
 </div>
                        </div>
                    </div>
                    <a href="/Users/james/.claude/projects/-Users-james-Documents-GitHub-System2/aac8187e-552c-459e-9cc7-67e473860eab/subagents/agent-aa76ae9b0c3c83a6d.jsonl" class="sub-agent-link">View transcript →</a>
                </div>
            </details>
        </article>
        <article class="turn turn-user" id="turn-4">
            <div class="turn-meta">
                <span class="turn-role">User</span>
                <span class="turn-timestamp">2026-03-15T19:19:20.612Z</span>
            </div>
            <div class="turn-content"><p>Do we need to add or change anything in <code>evals/run_evals.py</code>?</p>
 </div>
        </article>
        <article class="turn turn-assistant" id="turn-5">
            <div class="turn-meta">
                <span class="turn-role">Claude</span>
                <span class="turn-timestamp">2026-03-15T19:19:32.456Z</span>
            </div>
            <div class="turn-content"><p>Looking at the eval suite, it’s structurally sound for the current changes — all 27 pass. But there’s a gap: the new <code>regression-ledger.regex</code> allowlist exists and is counted by <code>EVAL-INV-004</code>, yet no eval verifies that it’s actually <em>referenced correctly</em> from agent hooks that need it, nor that its regex pattern is valid.</p>
 <p>Right now that’s not a problem because no agent frontmatter references <code>regression-ledger.regex</code> directly (test-engineer already covers <code>spec/*.md</code> via its broader pattern, and the orchestrator isn’t hook-gated). But if a future change wires it into an agent’s <code>validate-file-paths</code> hook, the existing <code>EVAL-ORC-003</code> / <code>EVAL-PATH-004</code> evals would catch a mismatch only if <code>agent_allowlist_bindings.json</code> is updated at the same time.</p>
 <p>The one concrete gap worth closing: there’s no eval that validates allowlist regex files are actually valid regex. A malformed pattern in any <code>.regex</code> file would silently break <code>validate-file-paths.py</code> at runtime.</p>
 </div>
        </article>
        <article class="turn turn-user" id="turn-6">
            <div class="turn-meta">
                <span class="turn-role">User</span>
                <span class="turn-timestamp">2026-03-15T19:20:57.265Z</span>
            </div>
            <div class="turn-content"><p>I’ll allow this edit, but change the name to be <code>eval_sec_004</code>. Suffixing existing eval IDs with slugs is not okay.</p>
 </div>
        </article>
        <article class="turn turn-assistant" id="turn-7">
            <div class="turn-meta">
                <span class="turn-role">Claude</span>
                <span class="turn-timestamp">2026-03-15T19:21:01.331Z</span>
            </div>
            <div class="turn-content"><p>Now fix the eval ID string inside the function too.The function definitions need reordering — <code>eval_sec_004</code> should come after <code>eval_sec_003</code>, not before it. Let me move it.I’ll swap the two function definitions so <code>eval_sec_003</code> comes first, then <code>eval_sec_004</code>.Now also fix the ordering in <code>ALL_EVALS</code> to match (003 before 004).28/28 pass. Function definitions and <code>ALL_EVALS</code> list are both in numeric order now.</p>
 </div>
        </article>
        <article class="turn turn-user" id="turn-8">
            <div class="turn-meta">
                <span class="turn-role">User</span>
                <span class="turn-timestamp">2026-03-15T22:23:56.461Z</span>
            </div>
            <div class="turn-content"><p>Take a sweep over uncomitted changes and check for changes that may be inconsistent with the existing package design, intent, or specifications.</p>
 </div>
        </article>
        <article class="turn turn-assistant" id="turn-9">
            <div class="turn-meta">
                <span class="turn-role">Claude</span>
                <span class="turn-timestamp">2026-03-15T22:24:03.361Z</span>
            </div>
            <div class="turn-content"><p>I’ve reviewed the full diff (11 modified files, 1 new file, +193 lines). Here’s what I found:</p>
 <h3>Consistent — no action needed</h3>
 <ul>
 <li><strong>Cross-references between agents are correct.</strong> test-engineer’s citation rule references “executor maintenance rules” which exists; requirements-engineer references “<a href="http://CLAUDE.md">CLAUDE.md</a> step 5” which covers amendment-vs-invalidation; eval-engineer’s “cap of 3” matches <a href="http://CLAUDE.md">CLAUDE.md</a>.</li>
 <li><strong><a href="http://SKILL.md">SKILL.md</a> template matches <a href="http://CLAUDE.md">CLAUDE.md</a></strong> — verified by EVAL-TPL-001.</li>
 <li><strong>Golden files are consistent</strong> — allowlist count bumped correctly, heading list extended.</li>
 <li><strong>EVAL-SEC-004 scope is correct</strong> — only validates <code>allowlists/</code> (not the intentionally-all-commented <code>.regex</code> files in <code>hooks/</code>).</li>
 <li><strong>New allowlist file pattern is valid regex</strong> — confirmed by the eval itself.</li>
 </ul>
 <h3>Issues found</h3>
 <p><strong>1. Unrelated <code>.gitignore</code> change</strong></p>
 <p>The diff includes a <code>.sessionbook</code> entry that was already dirty before this session (visible in the initial git status). Not from our work, but it’ll be scooped up by a <code>git add -A</code>.</p>
 <p><strong>2. <code>regression-ledger.regex</code> is an orphan allowlist</strong></p>
 <p>The file exists and is tracked in <code>allowlist_inventory.json</code>, but no agent’s frontmatter references it. This is correct <em>today</em> — test-engineer already covers <code>spec/regression-ledger.md</code> via its <code>^spec/.*\.md$</code> pattern, and the orchestrator isn’t hook-gated. But <code>agent_allowlist_bindings.json</code> has no entry for it, so there’s an asymmetry: <code>allowlist_inventory.json</code> knows about 13 files, while <code>agent_allowlist_bindings.json</code> only binds 12 of them. If a future eval checks for orphan allowlists, this would flag.</p>
 <p><strong>3. <code>design-architect.md</code> Inputs section doesn’t mention regression-ledger</strong></p>
 <p><a href="http://CLAUDE.md">CLAUDE.md</a> step 5 (invalidation path) delegates to design-architect, which would benefit from reading <code>spec/regression-ledger.md</code>. The user’s spec says design-architect needs read access (which is already unblocked since Read isn’t hook-gated), but the agent’s own <code>Inputs:</code> section doesn’t mention it. The orchestrator’s delegation contract would pass the context anyway, so this is a documentation gap, not a functional one.</p>
 <hr>
 <p>Items 2 and 3 are worth deciding on. Want me to fix either or both?</p>
 </div>
            <details class="thinking-block">
                <summary>Thinking</summary>
                <div class="thinking-content"><p>The user wants me to review all uncommitted changes for consistency with the existing package design. Let me check the git diff and review everything systematically.</p>
 </div>
            </details>
            <details class="thinking-block">
                <summary>Thinking</summary>
                <div class="thinking-content"><p>Let me now carefully review all uncommitted changes for consistency issues. Let me think through each file:</p>
 <ol>
 <li>
 <p><strong>.gitignore</strong> - Has a <code>.sessionbook</code> addition. This is unrelated to our changes — it was already dirty before we started (the git status at conversation start showed <code>M .gitignore</code>). Not our change.</p>
 </li>
 <li>
 <p><strong><a href="http://CLAUDE.md">CLAUDE.md</a></strong> - The Maintenance / Regression Loop section looks good. Let me check for consistency issues:</p>
 <ul>
 <li>References <code>requirements-engineer</code> in corrective mode — matches the agent update</li>
 <li>References <code>spec/regression-ledger.md</code> — matches the new allowlist</li>
 <li>References <code>design-architect</code> for invalidation — consistent with existing delegation map</li>
 <li>References the 2-attempt limit — matches executor’s self-correction limit</li>
 <li>References 3-cycle cap — consistent</li>
 </ul>
 </li>
 <li>
 <p><strong>evals/goldens/allowlist_inventory.json</strong> - Added <code>regression-ledger.regex</code>, count 12→13. Consistent.</p>
 </li>
 <li>
 <p><strong>evals/goldens/template_sections.json</strong> - Added <code>Maintenance / Regression Loop</code>. Consistent.</p>
 </li>
 <li>
 <p><strong>evals/run_evals.py</strong> - Added <code>eval_sec_004</code>. Clean, follows existing patterns.</p>
 </li>
 <li>
 <p><strong>plugin/agents/code-reviewer.md</strong> - Added the new agent definition, which aligns with the other agent files in structure and content.</p>
 </li>
 <li>
 <p><strong>plugin/agents/eval-engineer.md</strong> - Maintenance evals added with the 3-cycle cap referenced, staying consistent with <a href="http://CLAUDE.md">CLAUDE.md</a>.</p>
 </li>
 <li>
 <p><strong>plugin/agents/executor.md</strong> - Updated with maintenance execution rules and citation authority, properly referencing the self-correction limit and corrective requirements.</p>
 </li>
 <li>
 <p><strong>plugin/agents/requirements-engineer.md</strong> - Major overhaul that updates the frontmatter description, expands inputs to include corrective mode, introduces baseline and corrective operating modes, adds corrective drafting rules and traceability updates while preserving existing sections.</p>
 </li>
 <li>
 <p><strong>plugin/agents/test-engineer.md</strong> - Added verification summary format and test mutation policy that references corrective execution.</p>
 </li>
 <li>
 <p><strong>plugin/skills/init/SKILL.md</strong> - Synced with <a href="http://CLAUDE.md">CLAUDE.md</a>, and the test-engineer properly references citation authority from the executor.</p>
 </li>
 </ol>
 <p>Now I’m checking for potential inconsistencies. The <code>.gitignore</code> change with <code>.sessionbook</code> was already in the working tree before this session, so it’s not something we introduced. The <code>regression-ledger.regex</code> file exists but isn’t referenced in any agent’s hooks section — though the test-engineer already has broader access through its existing pattern, and the orchestrator isn’t hook-gated anyway, so this is architecturally sound.</p>
 <p>The distinction between <code>allowlist_inventory.json</code> tracking files that exist and <code>agent_allowlist_bindings.json</code> tracking actual agent-to-allowlist bindings means having an unbound allowlist is fine — it’s just a config file ready for future use. And <code>EVAL-ORC-003</code> won’t flag this since it only validates that agents in bindings reference the right allowlists, not whether allowlists are orphaned.</p>
 <p>For <code>eval_sec_004</code>, it validates regex syntax by design, not semantics.</p>
 <p><code>EVAL-INV-003</code> checks for <code>.py</code> and <code>.regex</code> files in <code>hooks/</code>, but the new allowlist lives in <code>allowlists/</code>, so the hook inventory golden stays unchanged.</p>
 <p>Now I’m verifying the cross-references between agents — test-engineer cites executor’s corrective execution section, requirements-engineer references <a href="http://CLAUDE.md">CLAUDE.md</a>’s maintenance loop for amendment vs invalidation, and eval-engineer’s citation is cut off but I’m checking those match up too.</p>
 <p>There’s a minor gap with design-architect: it would benefit from reading the regression ledger in corrective mode, but the user only required read access and didn’t list it in the agent’s inputs section. The orchestrator would pass that context anyway, so it’s not a blocker.</p>
 <p>Now checking whether our changes trigger any prohibited patterns — no REQ- prefixed strings in our new content, so that eval should pass. The template sync eval is already verified at 28/28. Looking at the regression ledger allowlist file, I need to verify whether it has the correct trailing newline format compared to other allowlist entries. I’m checking whether these regex files consistently have trailing newlines by examining the Read output more carefully. The regression-ledger file shows a blank line 2, which indicates a trailing newline, and I need to verify if the other files follow the same pattern or if there’s an inconsistency in how they were written.</p>
 <p>Actually, this turns out to be a non-issue since the evals pass and the hook’s <code>read_text()</code> with <code>splitlines()</code> handles trailing newlines transparently anyway.</p>
 <p>Now I’m looking at whether there are other inconsistencies in the setup. The <code>hook_inventory.json</code> doesn’t need updating since the new file is in <code>allowlists/</code> rather than <code>hooks/</code>, and the <code>allowlist_inventory.json</code> was already updated. But I’m noticing that <code>EVAL-SEC-004</code> only checks the <code>allowlists/</code> directory, while the <code>hooks/</code> directory also contains regex files that might need similar validation.</p>
 <p>The hook regex files serve a different purpose than the allowlist patterns, and since they’re currently all-commented out, including them in the eval would just trigger false failures. The current scope focusing on allowlists is the right call.</p>
 <p>Looking at the findings: the <code>.gitignore</code> change was pre-existing, the orphan allowlist file exists by design since the test-engineer’s patterns already cover it, and I need to check what <a href="http://design-architect.md">design-architect.md</a> actually documents.</p>
 </div>
            </details>
        </article>
        <article class="turn turn-user" id="turn-10">
            <div class="turn-meta">
                <span class="turn-role">User</span>
                <span class="turn-timestamp">2026-03-15T22:26:18.752Z</span>
            </div>
            <div class="turn-content"><p>Yes, fix both items 2 and 3.</p>
 </div>
        </article>
        <article class="turn turn-assistant" id="turn-11">
            <div class="turn-meta">
                <span class="turn-role">Claude</span>
                <span class="turn-timestamp">2026-03-15T22:26:35.183Z</span>
            </div>
            <div class="turn-content"><p>28/28 pass. Both fixes:</p>
 <ul>
 <li><strong><code>agent_allowlist_bindings.json</code></strong> — added <code>&quot;unbound_allowlists&quot;: [&quot;regression-ledger.regex&quot;]</code> so the golden explicitly documents that this allowlist exists but isn’t bound to any agent’s hooks (test-engineer’s broader <code>^spec/.*\.md$</code> pattern already covers it).</li>
 <li><strong><code>design-architect.md</code></strong> — added <code>spec/regression-ledger.md</code> to the Inputs list with context annotation for when it’s relevant (refreshing design after corrective requirements).</li>
 </ul>
 </div>
            <details class="thinking-block">
                <summary>Thinking</summary>
                <div class="thinking-content"><p>Let me fix both issues:</p>
 <ol>
 <li><strong>Orphan allowlist</strong>: I need to decide how to handle <code>regression-ledger.regex</code>. The test-engineer already has access via its broad pattern, so adding it as a secondary allowlist reference there would be redundant. The cleaner approach is to not have an orphan — but the file serves a purpose for future use. Let me think…</li>
 </ol>
 <p>Actually, the cleanest fix is to acknowledge that <code>regression-ledger.regex</code> exists but isn’t bound to any agent in <code>agent_allowlist_bindings.json</code>. I could either:</p>
 <ul>
 <li>
 <p>Add it to the golden as an “unbound allowlist” (separate from bindings)</p>
 </li>
 <li>
 <p>Remove the file entirely since no agent needs it (test-engineer already covers it)</p>
 </li>
 </ul>
 <p>But the user explicitly asked for this file to be created, and it has a real purpose: if we later want to give a more restricted agent write access to only the regression ledger without the broader spec/*.md access, this allowlist would be ready. The real solution is to add a field to <code>agent_allowlist_bindings.json</code> to track allowlist files that exist but aren’t currently bound to any agent.</p>
 <p>I could add an <code>unbound_allowlists</code> list to the bindings file to explicitly document this intent, which would let any future eval validate that all allowlist files are either bound or accounted for. Adding a comment to the regex file itself won’t work since JSON doesn’t support comments. The cleanest approach is the <code>unbound_allowlists</code> field—it documents the architectural intent and prevents the asymmetry. Then I need to update the <a href="http://design-architect.md">design-architect.md</a> inputs to include the <a href="http://regression-ledger.md">regression-ledger.md</a> file and note that it’s used during corrective and refresh modes.</p>
 </div>
            </details>
        </article>
        <article class="turn turn-user" id="turn-12">
            <div class="turn-meta">
                <span class="turn-role">User</span>
                <span class="turn-timestamp">2026-03-15T22:29:58.425Z</span>
            </div>
            <div class="turn-content"><p>These changes will ship as version 0.3.0. Update to that version number throughout the package.</p>
 </div>
        </article>
        <article class="turn turn-assistant" id="turn-13">
            <div class="turn-meta">
                <span class="turn-role">Claude</span>
                <span class="turn-timestamp">2026-03-15T22:30:03.203Z</span>
            </div>
            <div class="turn-content"><p>Let me find all version references.Straightforward — every <code>0.2.0</code> becomes <code>0.3.0</code> except the CHANGELOG historical entry. Let me update all files. I’ll skip <code>CHANGELOG.md:8</code> since that’s the existing release record.Need to read the files I haven’t read yet first.Now verify no <code>0.2.0</code> references remain (except the CHANGELOG historical entry), then run evals.Done. The only remaining <code>0.2.0</code> is the historical CHANGELOG entry, which is correct. All 15 files updated to <code>0.3.0</code>, 28/28 evals pass.</p>
 </div>
        </article>
        <article class="turn turn-user" id="turn-14">
            <div class="turn-meta">
                <span class="turn-role">User</span>
                <span class="turn-timestamp">2026-03-15T22:33:14.775Z</span>
            </div>
            <div class="turn-content"><p>Now update the CHANGELOG entry to document the changes for what we’re shipping as version 0.3.0.</p>
 </div>
        </article>
        <article class="turn turn-assistant" id="turn-15">
            <div class="turn-meta">
                <span class="turn-role">Claude</span>
                <span class="turn-timestamp">2026-03-15T22:33:22.359Z</span>
            </div>
            <div class="turn-content"><p>28/28 pass. CHANGELOG entry is in place for <code>[0.3.0] - 2026-03-15</code> with the full Added/Changed breakdown.</p>
 </div>
        </article>
    </div>
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