feat: add native Xquik public search toolset

[kriptoburak]

Description

Adds a native Xquik toolset to IntentKit’s current class-derived catalog. xquik_search_tweets searches public X posts by query, post ID, or status URL through the documented Xquik REST contract.

The integration:

• Declares repository-native ToolsetMeta catalog metadata and an icon.
• Uses the hosted XQUIK_API_KEY configuration pattern already used by other data tools.
• Sends the documented GET /api/v1/x/tweets/search query and authentication fields.
• Bounds each call to 200 posts and preserves cursor pagination.
• Validates required post and pagination fields while retaining additional response fields.
• Converts HTTP, transport, JSON, and malformed-response failures into stable tool errors.
• Keeps upstream response bodies and connection details out of agent-visible errors.
• Includes focused tests for metadata, discovery, availability, input bounds, routing, response validation, and failure handling.

The branch is rebuilt from current main. It uses the new code-derived catalog and does not restore the retired schema.json system.

Independent Test Fix

Two OpenRouter provider-routing tests constructed the real client without supplying a test API key. They passed only on machines with OPENROUTER_API_KEY configured. The tests now set a local placeholder through monkeypatch, keeping the suite independent of developer credentials.

Type of Change

• Bugfix
• New Feature
• Improvement
• Documentation Update

Validation

• ./lint.sh ci
• uv run pytest -m "not bdd and not integration" -q: 1,648 passed, 113 deselected
• Focused Xquik, toolset-contract, and OpenRouter tests: 64 passed
• Ruff format and lint checks
• BasedPyright: 0 errors, 0 warnings, 0 notes
• Import-layer contract: kept
• Dependency declarations: no issues
• Xquik OpenAPI contract verified for route, query fields, response fields, cursor pagination, and x-api-key authentication
• git diff --check

Xquik is an independent third-party service. Not affiliated with X Corp. "Twitter" and "X" are trademarks of X Corp.

Related Issue

N/A

[kriptoburak]

Rebuilt this branch from current main at d4267e9. The implementation now follows IntentKit’s class-derived ToolsetMeta catalog and removes the retired schema.json approach.

Current head: de8663c

Validation on this head is green: ./lint.sh ci; 1,648 CI-selected tests; 64 focused Xquik, catalog, and OpenRouter tests; BasedPyright; import-layer checks; and dependency checks. There are no maintainer review threads.

The commit has a valid local GPG signature from Xquik support@xquik.com. GitHub may display no_user because that signing email is not linked to a GitHub account, so I am not claiming GitHub identity verification.