[WIP] Add Copilot PR lifecycle with CI workflows

[Copilot]

Thanks for assigning this issue to me. I'm starting to work on it and will keep this PR's description up to date as I form a plan and make progress.

Original prompt

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This section details on the original issue you should resolve

<issue_title>infra: add Copilot PR lifecycle + auto-approve + CI workflows</issue_title>
<issue_description>## Summary
Onboard FinancialAdvisor into the praxis-business managed repo ecosystem with full lifecycle automation.

Requirements

• .github/workflows/copilot-pr-lifecycle.yml — auto-merge Copilot PRs after review
• .github/workflows/auto-approve-copilot-runs.yml — approve action_required runs
• .github/workflows/ci.yml — lint, type-check, test, build on every PR
• Add to praxis-business cross-repo manager tier 1 list
• Add to QA system (plures/qa) test suites

Acceptance

• Copilot PRs auto-merge after approved review
• CI runs on every PR
• Repo appears on praxis-business dashboard
• QA runs against this repo</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes infra: add Copilot PR lifecycle + auto-approve + CI workflows #77

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[kayodebristol]

Closing this PR to enforce the 1-PR-per-repo rule. Only one Copilot PR is allowed per repository at a time. The oldest PR (#48) will be kept active.