chore(ci): allowlist maintainer in CLA bot; fix store README link

- CLA bot was 404-ing because CLA_BOT_TOKEN is not yet set in repo
  secrets, leaving PERSONAL_ACCESS_TOKEN empty. Allowlist enriquephl
  so maintainer PRs aren't gated until the token is configured.
- store README pointed migration link at eros-engine-server/migrations,
  but migrations actually live under crates/eros-engine-store/migrations
  (caught by codex review on PR #9).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: enriquephl

.github/workflows/ci.yml

@@ -62,4 +62,6 @@ jobs:
           path-to-signatures: 'cla-signatures.json'
           path-to-document: 'https://github.com/etherfunlab/eros-engine/blob/main/CLA.md'
           branch: 'main'
-          allowlist: dependabot[bot]
+          # enriquephl is the etherfunlab maintainer; external contributors
+          # still go through the CLA flow once CLA_BOT_TOKEN is configured.
+          allowlist: dependabot[bot],enriquephl

crates/eros-engine-store/README.md

@@ -15,7 +15,7 @@ Postgres + pgvector persistence for the [`eros-engine`](https://github.com/ether
 - `persona` — persona instances per user.
 - `pool` — `PgPool` construction helpers.
 
-Schema migrations live in the [eros-engine repo](https://github.com/etherfunlab/eros-engine/tree/main/crates/eros-engine-server/migrations).
+SQL migrations ship inside this crate under [`migrations/`](https://github.com/etherfunlab/eros-engine/tree/main/crates/eros-engine-store/migrations) and can be applied with [`sqlx migrate run --source <path>`](https://docs.rs/sqlx).
 
 ## Use it