Fix Lab capability handshake admission (#10339)

[chubes4]

Fixes #10339.

Adds versioned Lab capability advertisement to self identity and daemon version responses, evaluates direct runner admission from command and daemon evidence plus verified Git ancestry, and persists negotiation provenance in preflight metadata. Missing, dirty, older, diverged, or incompatible evidence remains fail-closed; exact-match policy remains available.

Tests:

• cargo test -p homeboy-lab-runner-contract capability_handshake
• cargo test -p homeboy-lab-runner --lib (timed out after 10m; unrelated existing failure: parsed_provider_availability_accepts_cli_envelope_with_chatter)
• cargo test -p homeboy-core daemon (5 unrelated existing failures)
• cargo test -p homeboy-cli cli_runtime (1 unrelated existing failure)

AI assistance: OpenAI gpt-5.6-sol via OpenCode implemented the capability handshake wiring and ran focused and broad test suites. Chris Huber owns acceptance.

[homeboy-ci]

Homeboy Results — homeboy

Lint

⚠️ review lint — inconclusive

ℹ️ Full options: homeboy self docs commands/lint
ℹ️ Save lint baseline: homeboy review lint homeboy --baseline
Deep dive: homeboy review lint homeboy --changed-since 9d0dd2a

Artifacts and drill-down

• CI results artifact: homeboy-ci-results-homeboy-review-lint-homeboy-fast-Linux contains immediate command JSON for this action invocation.
• Observation artifact: homeboy-observations-homeboy-review-lint-homeboy-fast-Linux contains exported Homeboy run history for deeper queries.
• Drill-down: download the observation artifact, then run homeboy runs import <dir>, homeboy runs list, and homeboy runs findings <run-id>.
• Artifacts are attached to the workflow run: https://github.com/Extra-Chill/homeboy/actions/runs/31247842208

Audit

⚠️ review audit — no measurement

Deep dive: homeboy review audit homeboy --changed-since 9d0dd2a

Artifacts and drill-down

• CI results artifact: homeboy-ci-results-homeboy-review-audit-homeboy-fast-Linux contains immediate command JSON for this action invocation.
• Observation artifact: homeboy-observations-homeboy-review-audit-homeboy-fast-Linux contains exported Homeboy run history for deeper queries.
• Drill-down: download the observation artifact, then run homeboy runs import <dir>, homeboy runs list, and homeboy runs findings <run-id>.
• Artifacts are attached to the workflow run: https://github.com/Extra-Chill/homeboy/actions/runs/31247842208

Tooling versions

• Homeboy CLI: homeboy 0.334.0+9e446fd7773b-dirty
• Extension: rust from https://github.com/Extra-Chill/homeboy-extensions
• Extension revision: 14fe68af
• Action: unknown@unknown