> **SUPERSEDED — HISTORICAL PROVENANCE ONLY (2026-07-25):** The user-approved harness-free
> Mode B amendment supersedes this plan. Retain the body as historical provenance; it is not
> executable instruction.

# Harness Policy Engine Implementation Plan

> **Spec:** `docs/superpowers/specs/2026-07-20-harness-policy-engine-design.md`

**Goal:** Replace topology- and platform-specific duplicated harness rules with a registry,
strict evidence validators, generated platform variants, and risk-based review policies.

**Working policy:** human-only commits. Each task leaves changes in the working tree.

## Task 1 — Registry, resolver, and Gradle SSOT

**Files:**

- Add `.harness/project/modules.yaml`
- Add `.harness/lib/module_registry.py`
- Add `.harness/validators/validate_modules.py`
- Add `.harness/tests/test_module_registry.py`
- Modify `src/settings.gradle`
- Modify the dependency-verifier section of `src/build.gradle`

**Steps:**

- [ ] Write failing tests for 19-leaf loading, nested owner resolution, nearest `CLAUDE.md`,
      unknown paths, and settings/registry parity.
- [ ] Add the registry and stdlib loader/resolver.
- [ ] Make Gradle settings and dependency verification consume registry data.
- [ ] Run Python tests and `./gradlew projects verifyCleanArchitectureDependencies`.

## Task 2 — Registry-driven import gate and mutation suite

**Files:**

- Modify `.claude/hooks/ca_import_gate.py`
- Modify `.claude/hooks/test_ca_import_gate.py`
- Add `.harness/tests/test_import_gate_mutations.py`

**Steps:**

- [ ] Add failing real-path tests for every registered production module.
- [ ] Replace flat-path regex/prefix rules with registry owner and role policy.
- [ ] Normalize Claude snake_case and Antigravity camelCase tool events.
- [ ] Fail closed on malformed in-scope events and marker failures.
- [ ] Run all import-gate tests.

## Task 3 — Verdict schema, evidence artifacts, and platform adapters

**Files:**

- Add `.harness/schemas/verdict.schema.json`
- Add `.harness/schemas/evidence.schema.json`
- Add `.harness/lib/verdict.py`
- Add `.harness/validators/validate_verdict.py`
- Add `.harness/validators/validate_evidence.py`
- Add `.harness/adapters/antigravity_hook.py`
- Add `.harness/tests/test_verdict.py`
- Modify `.claude/hooks/ca_verdict_gate.py`
- Modify `.claude/hooks/test_ca_verdict_gate.py`
- Add `.agents/plugins/ca-superpowers/hooks.json`

**Steps:**

- [ ] Write negative tests for missing required enums, negative counts, Gradle arithmetic,
      behavior change without red, missing upstream artifacts, malformed input, and revision
      mismatch.
- [ ] Implement strict validation and evidence recording with source/diff hashes.
- [ ] Adapt Claude fenced verdicts to the common model.
- [ ] Add Antigravity Stop/pre-tool adapter and plugin hook wiring.
- [ ] Run validator, adapter, and JSON syntax tests.

## Task 4 — Canonical agents and deterministic rendering

**Files:**

- Add `.harness/agents/*.md`
- Add `.harness/project/platforms.yaml`
- Add `.harness/generators/render_agents.py`
- Add `.harness/tests/test_platform_parity.py`
- Regenerate `.claude/agents/*`, `.codex/agents/*.toml`, `.agents/agents/*/agent.json`
- Update `.agents/plugins/ca-superpowers/README.md` and `plugin.json`
- Update `.codex/agents/README.md`

**Steps:**

- [ ] Seed canonical sources from the newest human-only Claude policy, then update module
      discovery and runner validation to use the registry.
- [ ] Add generated metadata and stable output ordering.
- [ ] Render all variants and add a `--check` parity mode.
- [ ] Assert commit policy, source hashes, tool permissions, and body parity in tests.

## Task 5 — Risk/profile policies and guidance drift cleanup

**Files:**

- Add `.harness/manifest.yaml`
- Add `.harness/core/risk-policy.yaml`, `.harness/core/evidence-policy.yaml`
- Add current architecture/language/build/framework/capability profile files
- Add `.harness/validators/resolve_task.py` and tests
- Modify `AGENTS.md`, root `CLAUDE.md`, clean-architecture rule, workflow skill,
  advisory-depth rule, reporting-standards rule, and plugin README
- Modify stale module `CLAUDE.md` files and add missing leaf-module guidance where useful

**Steps:**

- [ ] Add failing task-classification tests for high-risk one-file changes and low-risk
      multi-file fixture/docs changes.
- [ ] Implement profile resolution.
- [ ] Replace `N!`, routine all-quote grep, file-count report split, and unconditional
      counterargument policies with the design profiles.
- [ ] Replace flat module documentation and focused commands with registry-backed nested names.
- [ ] Run policy grep assertions and harness tests.

## Task 6 — Full review and verification

- [ ] Run harness unit/mutation/parity suite.
- [ ] Run `./gradlew projects` and `./gradlew verifyCleanArchitectureDependencies`.
- [ ] Run the focused ArchUnit suite.
- [ ] Run `./gradlew check`.
- [ ] Audit the working-tree diff in order: architecture → spec → quality.
- [ ] Fix findings and restart the review chain, up to three loops.

## Task 7 — LLM Wiki capture

- [ ] Read the LLM Wiki authority and branch-note template.
- [ ] Update/create the detached-HEAD branch note with implementation decisions, changed files,
      verification evidence, failures, and open risks.
- [ ] Create/link derived error, interview, or blog-topic raw notes only when supported by the
      completed work; otherwise record an explicit “none” judgment in the branch note.