feat: add weaviate connector

[andrei-hasna]

Summary

• Add @hasna/connect-weaviate package under connectors/weaviate/ for self-hosted Weaviate REST API ({host}/v1) with optional Bearer API key auth
• Implement schema, object CRUD, GraphQL query, near-text search, and node status methods plus matching CLI commands
• Register weaviate in AI & ML connector registry with focused client unit tests

Test plan

• cd connectors/weaviate && bun install && bun run typecheck && bun run build && bun test (6 pass)
• bun run typecheck at repo root
• bun run build && bun test at repo root (1192 pass; 1 pre-existing events/webhooks CLI test failure unrelated to this change)
• bun run dev --help in connector dir
• Grep new tree for secrets/internal refs/browser-use (clean)

[andrei-hasna]

Blocked from merge after local validation and adversarial review.

Findings:

• Blocker: the published package would have a broken library entrypoint. connectors/weaviate/package.json advertises ./dist/index.js and ./dist/index.d.ts via exports, main, and types, but connectors/weaviate/.gitignore ignores dist/, and the current build only uses bun build, which does not emit declaration files. I reproduced this with bun install && bun run build && bun pm pack --dry-run inside connectors/weaviate: the dry-run package includes bin/index.js and source files, but omits dist/index.js and any dist/index.d.ts. The README documents import { Weaviate } from '@hasna/connect-weaviate', so this would be user-visible after publish.
• High: connectors/weaviate/.npmrc only sets @hasna:registry=https://registry.npmjs.org/ and does not include the repo-required npm token placeholder line using ${NPM_TOKEN}.

Validation that passed:

• GitHub reports PR feat: add weaviate connector #78 as mergeable/CLEAN; CI build check succeeded.
• Local merge of origin/pr/78 into current origin/main applied without conflicts.
• git diff --check origin/main...origin/pr/78 passed.
• Focused connector validation passed: bun run typecheck, bun test (6 pass), bun run build.
• Root validation passed after dependency install with scripts disabled: bun run typecheck, bun test src/lib/registry.test.ts (28 pass).
• Diff secrets/internal-reference scan found no credential or internal-reference hits; Weaviate is not on the connector blacklist and no browser automation dependency was found.

Recommendation: do not merge until the package publish contents are fixed, declarations are emitted or types is corrected, and .npmrc follows the connector policy.