feat: add Google BigQuery driver plugin (#480)

* feat: add Google BigQuery driver plugin

* Update CLAUDE.md

* chore: remove bigquery-status.md from tracked files

* fix: address PR review — access modifier, SQL injection, formatter cache, OAuth token, LIMIT regex

* fix: re-add BigQuery Xcode target lost in merge, fix supportsColumnReorder

* fix: remove hidden bqOAuthRefreshToken field from connection form

* feat: add conditional field visibility (visibleWhen) to connection form

* fix: hide password field for all auth methods when hidesPassword is declared

* fix: BigQuery icon adapts to light/dark mode (template rendering)

* fix: BigQuery connection form UX — labels, placeholders, validation, field types

* fix: remove redundant prefixes from BigQuery error messages — show raw API errors

* fix: auto-select first dataset on connect — sidebar shows tables immediately

* fix: resolve dataset at execution time for tagged queries — handle probe driver instances

* fix: handle INTEGER/BOOLEAN/TIMESTAMP type names in DML — INFORMATION_SCHEMA returns different names than table resource API

* fix: registry snapshot systemSchemaNames mismatch + correct docs pagination statement

* docs: complete BigQuery docs — cost display, dry run, max bytes billed, dataset switching, DDL

* chore: remove debug logging from BigQuery driver

* docs: update description to match unified tagline

* fix: pass totalBytesBilled and cacheHit to BQExecuteResult — enables full cost display

* docs: clarify cost display shows for SQL editor queries

Author: datlechin

CLAUDE.md

@@ -7,7 +7,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 TablePro is a native macOS database client (SwiftUI + AppKit) — a fast, lightweight alternative to TablePlus. macOS 14.0+, Swift 5.9, Universal Binary (arm64 + x86_64).
 
 - **Source**: `TablePro/` — `Core/` (business logic, services), `Views/` (UI), `Models/` (data structures), `ViewModels/`, `Extensions/`, `Theme/`
-- **Plugins**: `Plugins/` — `.tableplugin` bundles + `TableProPluginKit` shared framework. Built-in (bundled in app): MySQL, PostgreSQL, SQLite, ClickHouse, MSSQL, Redis, CSV, JSON, SQL export, XLSX, MQL, SQLImport, DynamoDB. Separately distributed via plugin registry: MongoDB, Oracle, DuckDB, Cassandra, Etcd, CloudflareD1
+- **Plugins**: `Plugins/` — `.tableplugin` bundles + `TableProPluginKit` shared framework. Built-in (bundled in app): MySQL, PostgreSQL, SQLite, ClickHouse, MSSQL, Redis, DynamoDB, CSV, JSON, SQL export, XLSX, MQL, SQLImport. Separately distributed via plugin registry: MongoDB, Oracle, DuckDB, Cassandra, Etcd, CloudflareD1, BigQuery
 - **C bridges**: Each plugin contains its own C bridge module (e.g., `Plugins/MySQLDriverPlugin/CMariaDB/`, `Plugins/PostgreSQLDriverPlugin/CLibPQ/`)
 - **Static libs**: `Libs/` — pre-built `libmariadb*.a`, `libpq*.a`, etc. Downloaded from GitHub Releases via `scripts/download-libs.sh` (not in git)
 - **SPM deps**: CodeEditSourceEditor (`main` branch, tree-sitter editor), Sparkle (2.8.1, auto-update), OracleNIO. Managed via Xcode, no `Package.swift`.
@@ -85,6 +85,11 @@ Plugin bundles under `Plugins/`:
 | MongoDBDriverPlugin    | MongoDB              | CLibMongoc           | Registry     |
 | DuckDBDriverPlugin     | DuckDB               | CDuckDB              | Registry     |
 | OracleDriverPlugin     | Oracle               | OracleNIO (SPM)      | Registry     |
+| CassandraDriverPlugin  | Cassandra, ScyllaDB  | CCassandra           | Registry     |
+| EtcdDriverPlugin       | Etcd                 | (gRPC/HTTP)          | Registry     |
+| CloudflareD1Plugin     | Cloudflare D1        | (URLSession HTTP)    | Registry     |
+| DynamoDBDriverPlugin   | DynamoDB             | (AWS SDK)            | Built-in     |
+| BigQueryDriverPlugin   | BigQuery             | (URLSession REST)    | Registry     |
 
 When adding a new driver: create a new plugin bundle under `Plugins/`, implement `DriverPlugin` + `PluginDatabaseDriver`, add target to pbxproj. See `docs/development/plugin-system/` for details.