status: derive provider list from daemon provider summary

[ToadAid]

Summary

• derive status.provider.providers from the daemon-backed provider summary instead of reading runtimeHost.providerPlane.listProviders() directly
• extend the daemon provider summary to carry url and last_error
• add focused daemon provider-summary coverage for the new fields

Why

This finishes the remaining provider truth gap in the status seam by making the status provider list come from the same daemon-backed summary path as the other provider aggregate fields.

Scope

Changed:

• src/mirrordaemon/daemon_types.ts
• src/mirrordaemon/runtime_state.ts
• src/mirrordaemon/runtime_state.test.ts
• src/mirror/status/status.ts

Not changed:

• src/mirror-service/*
• src/mirror-sync/*
• adapter-boundary files
• compat runtime files
• status formatting
• the excluded fix(cli): make mirror status report canonical runtime truth only #130 / fix(cli): align mirror verify-lore defaults with MIRROR_LORE_DIR #133 seams

Details

This patch:

• adds url and last_error to MirrordaemonProvidersSummary.providers[]
• populates those fields in buildProvidersSummary(...)
• changes status.ts to source:
  • provider.active_provider_id
  • provider.total
  • provider.available
  • provider.fallback_available
  • provider.providers
    from getMirrordaemonProvidersState(...) instead of mixing in direct providerPlane.listProviders() reads

Verification

• pnpm vitest run src/mirrordaemon/runtime_state.test.ts
• pnpm vitest run src/mirror/status/tests/status.test.ts