feat(pry): production readiness pass — apify actor, async db, retry wiring, tests, observability, mypy

- Pin Dockerfile --workers 1

- Wire retry.py + circuit breakers into ultimate_scraper tiers

- Add Apify actor (apify_actor.py, Dockerfile.apify, .actor/actor.json)

- Add async SQLAlchemy support alongside sync db.py

- Add 31 HTTP integration tests (tests/test_api_integration.py + test_api_mcp.py)

- Add OTLP exporter support in observability.py

- Re-enable mypy var-annotated error code; fix annotations

- Improve CI workflow (pip cache, install -e .[dev], gitleaks, commitlint, 40% coverage gate)

pyproject.toml

@@ -102,7 +102,6 @@ warn_unused_ignores = false
 # TODO: Pry was built without strict typing; re-enable incrementally.
 # Tracking issue: re-enable mypy strict mode after router refactor.
 disable_error_code = [
-    "var-annotated",
     "dict-item",
     "index",
     "attr-defined",