feat(optimization): adopt official GEPA and SkillOpt engines

[drewstone]

Summary

• Route profile improvement through official GEPA, GEPA Omni, and Microsoft SkillOpt implementations supplied by @tangle-network/agent-eval@0.126.6.
• Use one OptimizationMethod contract across prompt, skill, code, retrieval, knowledge, and memory candidate surfaces while keeping final-test scenarios outside optimizer input.
• Authorize each exact candidate before execution and retain exact optimizer source, model, cost, resume, and activation evidence.
• Isolate concurrent SWE candidates in independent Git worktrees and bind resume identity to the full Runtime, Bench, incumbent, and installed SWE judge implementations.
• Remove retired local prompt, profile-diff, campaign OTLP, and record-only optimizer APIs; migrate Runtime, Bench, examples, skills, and docs.

Releases

• @tangle-network/agent-runtime@0.105.0
• @tangle-network/agent-bench@0.4.0
• Requires @tangle-network/agent-eval@0.126.6 and @tangle-network/agent-knowledge@5.0.1.

Verification

• pnpm test: 1,770 passed, 6 environment-only skipped.
• pnpm typecheck; pnpm lint; pnpm verify:package; pnpm docs:freshness: passed.
• pnpm verify:bench: 61/61 TypeScript files plus Pier bridge and packed TypeScript 5.9.3/6.0.3 consumers passed.
• Packed wheel GEPA: 4 evaluations; resume cost remained $0.000037.
• Packed Microsoft SkillOpt at 61735e3922efc2b90c6d6cab561e62e98452ca90: 3 evaluations.
• Packed source GEPA Omni at f919db0a622e2e9f9204779b81fe00cc1b2d808f: 9 evaluations and 2 model requests.
• Mutation checks proved exact candidate authorization, cost accounting, redaction, concurrent isolation, and implementation-bound resume identity.

[tangletools]

✅ Auto-approved drewstone PR — 970c1dd8

This PR was opened by the trusted drewstone account.
The full PR reviewer audit still runs separately and will publish findings if it detects issues.

_{tangletools · auto-approval · reason: drewstone_author · 2026-07-24T22:44:45Z}