A clean `ktx setup` was failing verification because the managed
local-embeddings daemon URL was passed library-side through
`process.env[KTX_MANAGED_SENTENCE_TRANSFORMERS_BASE_URL]`, and the setup
flow never wrote that variable. With no resolved URL the embedding
provider was null, the deep scan emitted
`scan_enrichment_backend_not_configured`, descriptions + embeddings
stayed `skipped`, and the agent-readiness check exited 1.
Replace the env-var indirection with CLI-side substitution at the
project-load boundary. New `loadKtxCliProject` wraps `loadKtxProject`,
ensures the managed daemon when `managed:local-embeddings` is present in
`config.ingest.embeddings` or `config.scan.enrichment.embeddings`, and
substitutes the resolved baseUrl into the in-memory config. Runtime
entry points (scan, ingest, public-ingest, admin-reindex) use the new
loader; setup-time persistence paths keep raw `loadKtxProject` so the
on-disk `ktx.yaml` keeps the portable sentinel.
Cleanup follows from the new design: drop
`MANAGED_SENTENCE_TRANSFORMERS_BASE_URL_ENV`, remove the env-var lookup
branch in `resolveSentenceTransformersBaseUrl`, drop the `env` field
from `ManagedLocalEmbeddingsDaemon`, and collapse the manual
daemon-ensure dance in `admin-reindex.ts`.
