feat(config): use succinct repo_url project remotes

[christso]

Summary

Follow-up to #1356 for issue #1354. The merged hard-break schema used GitHub owner/name repository fields and derived HTTPS clone URLs. Per follow-up design discussion, this switches Dashboard project/results config to a succinct Git remote schema:

projects:
  - id: agentv
    name: AgentV
    repo_url: https://github.com/EntityProcess/agentv.git
    path: /home/entity/projects/EntityProcess/agentv
    ref: main
    results:
      repo_url: git@github.com:EntityProcess/agentv-eval-results.git
      path: /home/entity/projects/EntityProcess/agentv-eval-results
      sync:
        auto_push: true

This uses repo_url for remote Git transport and path for local checkout paths at both levels.

Refs #1354; supersedes the repository owner/name shape merged in #1356.

Changes

• Replace internal repository fields with camelCase repoUrl; YAML uses repo_url.
• Project sync passes repoUrl directly to git clone, supporting HTTPS/SSH/file-style remotes.
• Project results mapping reads results.repo_url and results.path.
• Validation rejects removed fields with migration guidance:
  • projects[].source
  • projects[].repository
  • projects[].results.mode
  • projects[].results.repo
  • projects[].results.repository
  • projects[].results.local_path
  • projects[].results.auto_push
• Dashboard docs show before/after migration examples using repo_url + path.

Red / Green UAT

• Red: feat(config): hard-break dashboard project schema #1356 schema forced owner/name repository and then results.local_path, so SSH transport and succinct symmetric path naming were not represented.
• Green: this branch accepts explicit Git remotes such as https://github.com/example/repo.git and git@github.com:example/repo.git; source and results local checkouts both use path.

Verification

• bun run build
• bun test packages/core/test/projects.test.ts packages/core/test/project-sync.test.ts packages/core/test/evaluation/validation/config-validator.test.ts apps/cli/test/commands/results/serve.test.ts
• git diff --check
• bun run lint
• bun run typecheck
• bun run test
  • core: 1847 pass
  • eval: 67 pass
  • phoenix-adapter: 22 pass
  • cli: 574 pass
  • dashboard: 83 pass

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