Resolve registered primary paths to managed repo identities in fanout

[chubes4]

Summary

• resolve an exact registered primary checkout path to its managed component slug before fanout child planning
• preserve repository slugs unchanged while rejecting related worktrees, nested paths, ambiguous registrations, and unregistered paths with structured guidance
• expose the owning-layer primary-path resolution primitive from homeboy-core and document the accepted --repo forms
• verify normalization at both the core boundary and the fanout command boundary

Verification

• cargo fmt --all -- --check
• cargo test --locked -p homeboy-core registered_primary_path_resolution_is_exact_and_canonical --lib
• cargo test --locked -p homeboy-core registered_primary_path_resolution_rejects_related_and_ambiguous_checkouts --lib
• cargo test --locked -p homeboy-cli cook_batch_repo_normalization_accepts_slugs_and_registered_primary_paths --lib
• final independent review reported no findings

Closes #11984.

AI Assistance

OpenAI gpt-5.6-sol via OpenCode analyzed the primary-path failure, implemented the shared resolver and fanout integration, and reviewed and verified the patch under human direction. Chris Huber remains responsible for every line.

[homeboy-ci]

Homeboy Results — homeboy

Lint

✅ review lint — passed

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 66a6691

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/31288158373

Audit

⚠️ review audit — no measurement

Deep dive: homeboy review audit homeboy --changed-since 66a6691

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/31288158373

Tooling versions

• Homeboy CLI: homeboy 0.334.0+ba85b77bd72a
• Extension: rust from https://github.com/Extra-Chill/homeboy-extensions
• Extension revision: a32e4ea3
• Action: unknown@unknown

[chubes4]

CI prerequisite update: this branch now merges #12001 non-destructively because current main cannot compile the workspace test suite without its AdoptArgs fixture repair. The resolver commit remains independent; once #12001 lands, this PR diff reduces to #11984 plus the merge topology.

AI assistance: OpenAI gpt-5.6-sol via OpenCode identified the prerequisite and performed the non-destructive branch update under human direction. Chris Huber remains responsible for the change.

[chubes4]

Superseded by #12012, which landed registered primary-path resolution on main. AI assistance disclosure: OpenAI gpt-5.6-sol via OpenCode was used to verify patch equivalence and reconcile the PR queue.