Update readme for SimString

[matthewmcneely]

Summary by cubic

Documents SimString automatic similarity search for v0.5.0 with setup, schema, and query examples. Adds the embedding tag with auto-embedding on insert/upsert/update, shadow vectors, and HNSW defaults.

• New Features
  • SimString: auto-embeds on write; stores __vec; AutoSchema adds HNSW index (cosine, exponent=4).
  • Setup: OpenAI-compatible provider config and client wiring; shows custom EmbeddingProvider interface.
  • Queries: SimilarToText (embed+search) and SimilarTo (vector with txn) examples.
  • Directives table: adds embedding tag and options; threshold deletes short-text vectors.

^{Written for commit 491fe6e. Summary will update on new commits.}

[cubic-dev-ai]

1 issue found across 1 file

Prompt for AI agents (unresolved issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="README.md">

<violation number="1" location="README.md:608">
P3: Check `err` from `DgraphClient()` before creating the transaction; the current example uses `dgoClient` even when acquisition fails.</violation>
</file>

_{Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.}