* feat(cli): add tryUseManagedLocalEmbeddingsDaemon for read-only callers
* feat(cli): add resolveProjectEmbeddingProvider helper
* fix(cli): wire sl search through resolveProjectEmbeddingProvider so semantic lane works
* fix(cli): wire wiki/knowledge search through resolveProjectEmbeddingProvider
* feat(cli): surface embeddings-unavailable status when sl search returns empty
* refactor(cli): route admin reindex through resolveProjectEmbeddingProvider
* refactor: pass embeddingProvider into ingest/scan instead of resolving inside @ktx/context
* refactor(mcp): resolve embedding provider in CLI factory, pass into context ports
* refactor(context): delete MANAGED_SENTENCE_TRANSFORMERS_BASE_URL sentinel
* refactor(cli): delete sentinel-based managed-embeddings indirection
* chore: scrub stale managed-embeddings sentinel references from tests and smoke script
* chore: unexport unused EmbeddingResolutionMode alias
* fix(cli): force pathPrefix="" when targeting the managed embeddings daemon
The managed daemon serves /embeddings/compute directly. The default
pathPrefix in @ktx/llm is /api, so omitting sentenceTransformers from
ktx.yaml produced /api/embeddings/compute -> 404. The resolver now
sets pathPrefix='' explicitly when wiring the managed daemon URL,
matching what the daemon actually exposes.
