---
phase: 05-implementation-skills
verified: 2026-03-19T22:05:00Z
status: passed
score: 9/9 must-haves verified
re_verification: false
---

# Phase 5: Implementation Skills Verification Report

**Phase Goal:** Create two implementation-layer skills (harness-design-web and harness-design-mobile) with skill.yaml + SKILL.md on both platforms (claude-code and gemini-cli).
**Verified:** 2026-03-19T22:05:00Z
**Status:** passed
**Re-verification:** No -- initial verification

## Goal Achievement

### Observable Truths

| #   | Truth                                                                                                 | Status   | Evidence                                                                                                                                                                                                               |
| --- | ----------------------------------------------------------------------------------------------------- | -------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 1   | Web skill.yaml exists with correct fields (name, cognitive_mode, type, phases, depends_on, platforms) | VERIFIED | name: harness-design-web, cognitive_mode: meticulous-implementer, type: rigid, phases: [scaffold, implement, verify], depends_on: [harness-design-system, harness-design], platforms: [claude-code, gemini-cli]        |
| 2   | Web SKILL.md exists with required sections                                                            | VERIFIED | Sections found: When to Use, Process (scaffold/implement/verify), Harness Integration, Success Criteria, Examples, Gates, Escalation                                                                                   |
| 3   | gemini-cli copies of harness-design-web are byte-identical to claude-code                             | VERIFIED | diff exits 0 for both skill.yaml and SKILL.md                                                                                                                                                                          |
| 4   | Mobile skill.yaml exists with correct fields                                                          | VERIFIED | name: harness-design-mobile, cognitive_mode: meticulous-implementer, type: rigid, phases: [scaffold, implement, verify], depends_on: [harness-design-system, harness-design], platforms: [claude-code, gemini-cli]     |
| 5   | Mobile SKILL.md exists with required sections                                                         | VERIFIED | Sections found: When to Use, Process (scaffold/implement/verify), Harness Integration, Success Criteria, Examples, Gates, Escalation                                                                                   |
| 6   | gemini-cli copies of harness-design-mobile are byte-identical to claude-code                          | VERIFIED | diff exits 0 for both skill.yaml and SKILL.md                                                                                                                                                                          |
| 7   | Web SKILL.md references web-specific terms                                                            | VERIFIED | Tailwind(14), CSS(28), React(10), Vue(7), Svelte(5), tokens.json(9), harness-design-system(9), harness-design(16), DesignToken(3), USES_TOKEN(6), PLATFORM_BINDING(2), platform-rules/web.yaml(1)                      |
| 8   | Mobile SKILL.md references mobile-specific terms                                                      | VERIFIED | React Native(13), SwiftUI(9), Flutter(11), Compose(8), tokens.json(7), harness-design-system(7), harness-design(10), DesignToken(2), USES_TOKEN(3), PLATFORM_BINDING(3), ios.yaml(2), android.yaml(2), flutter.yaml(1) |
| 9   | pnpm test passes (all tests green)                                                                    | VERIFIED | 16/16 tasks successful. Skills tests: 491 passed (including schema, platform-parity, structure, references). All packages green.                                                                                       |

**Score:** 9/9 truths verified

### Required Artifacts

| Artifact                                                     | Expected                           | Status   | Details                               |
| ------------------------------------------------------------ | ---------------------------------- | -------- | ------------------------------------- |
| `agents/skills/claude-code/harness-design-web/skill.yaml`    | Web skill config                   | VERIFIED | 53 lines, all required fields present |
| `agents/skills/claude-code/harness-design-web/SKILL.md`      | Web skill instructions             | VERIFIED | 359 lines, 8 sections, 2 examples     |
| `agents/skills/gemini-cli/harness-design-web/skill.yaml`     | Gemini copy of web config          | VERIFIED | Byte-identical to claude-code         |
| `agents/skills/gemini-cli/harness-design-web/SKILL.md`       | Gemini copy of web instructions    | VERIFIED | Byte-identical to claude-code         |
| `agents/skills/claude-code/harness-design-mobile/skill.yaml` | Mobile skill config                | VERIFIED | 50 lines, all required fields present |
| `agents/skills/claude-code/harness-design-mobile/SKILL.md`   | Mobile skill instructions          | VERIFIED | 335 lines, 8 sections, 2 examples     |
| `agents/skills/gemini-cli/harness-design-mobile/skill.yaml`  | Gemini copy of mobile config       | VERIFIED | Byte-identical to claude-code         |
| `agents/skills/gemini-cli/harness-design-mobile/SKILL.md`    | Gemini copy of mobile instructions | VERIFIED | Byte-identical to claude-code         |

### Anti-Patterns Found

| File   | Line | Pattern | Severity | Impact                                    |
| ------ | ---- | ------- | -------- | ----------------------------------------- |
| (none) | -    | -       | -        | No anti-patterns detected in any artifact |

### Human Verification Required

None. All truths are verifiable programmatically for this phase (file existence, content matching, byte-identical copies, test suite pass).

### Gaps Summary

No gaps found. All 9 observable truths verified. All 8 artifacts exist, are substantive, and pass content checks. Platform parity confirmed via byte-identical diffs. Test suite passes with 491 skill-specific tests green.

---

_Verified: 2026-03-19T22:05:00Z_
_Verifier: Claude (gsd-verifier)_
