feat: add Cassandra and ScyllaDB database support

Add Cassandra as the 11th database engine in TablePro, with ScyllaDB as a
secondary type sharing the same plugin (like MySQL/MariaDB). Uses the
DataStax C/C++ driver via a C bridge module.

- CassandraDriverPlugin with full CQL support (keyspaces, tables, views,
  indexes, schema introspection via system_schema)
- DatabaseType enum: .cassandra and .scylladb cases across all switch sites
- Connection URL schemes: cassandra://, cql://, scylladb://, scylla://
- Theme colors, icon assets, default port 9042
- CQL dialect with keywords, functions, and data types for autocomplete
- CI workflow support for building downloadable plugin (build-plugin.yml)
- Build script for DataStax cpp-driver + libuv static libraries
- Documentation (English + Vietnamese)
- Tests for DatabaseType properties and URL parsing

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: LocNguyenHuu

.github/workflows/build-plugin.yml

@@ -73,6 +73,11 @@ jobs:
                 DISPLAY_NAME="DuckDB Driver"; SUMMARY="DuckDB analytical database driver"
                 DB_TYPE_IDS='["DuckDB"]'; ICON="bird"; BUNDLE_NAME="DuckDBDriver"
                 HOMEPAGE="https://tablepro.app" ;;
+              cassandra)
+                TARGET="CassandraDriver"; BUNDLE_ID="com.TablePro.CassandraDriver"
+                DISPLAY_NAME="Cassandra Driver"; SUMMARY="Apache Cassandra and ScyllaDB driver via DataStax C driver"
+                DB_TYPE_IDS='["Cassandra"]'; ICON="cassandra-icon"; BUNDLE_NAME="CassandraDriver"
+                HOMEPAGE="https://tablepro.app/databases/cassandra" ;;
               *) echo "Unknown plugin: $plugin_name"; return 1 ;;
             esac
           }
@@ -91,6 +96,12 @@ jobs:
 
             echo "Building $TARGET v$VERSION"
 
+            # Build Cassandra dependencies if needed
+            if [ "$PLUGIN_NAME" = "cassandra" ]; then
+              ./scripts/build-cassandra.sh arm64
+              ./scripts/build-cassandra.sh x86_64
+            fi
+
             # Build both architectures
             ./scripts/build-plugin.sh "$TARGET" arm64
             ./scripts/build-plugin.sh "$TARGET" x86_64

CHANGELOG.md

@@ -27,6 +27,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Pre-connect script: run a shell command before each connection (e.g., to refresh credentials or update ~/.pgpass)
 - `ParameterStyle` enum in TableProPluginKit: plugins declare `?` or `$1` placeholder style via `parameterStyle` property on `PluginDatabaseDriver`
 - DML statement generation in ClickHouse, MSSQL, and Oracle plugins via `generateStatements()` for database-specific UPDATE/DELETE syntax
+- Cassandra and ScyllaDB database support via DataStax C driver (downloadable plugin)
 
 ### Changed
 

Libs/libcassandra.a

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4ca80d0764d15c1f96dc9dac8919477c71fc437e5f452f5c25128faa03e6f32f
+size 5525840

Libs/libcassandra_arm64.a

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4ca80d0764d15c1f96dc9dac8919477c71fc437e5f452f5c25128faa03e6f32f
+size 5525840

Libs/libuv.a

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f68094acef3ad60d58a59dd3c0d77f49f149a2868da15b38f82fbdc1aff63299
+size 251656

Libs/libuv_arm64.a

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f68094acef3ad60d58a59dd3c0d77f49f149a2868da15b38f82fbdc1aff63299
+size 251656

Plugins/CassandraDriverPlugin/CCassandra/CCassandra.h

@@ -0,0 +1,14 @@
+//
+//  CCassandra.h
+//  TablePro
+//
+//  C bridging header for the DataStax Cassandra C driver.
+//  Headers are bundled in the include/ subdirectory.
+//
+
+#ifndef CCassandra_h
+#define CCassandra_h
+
+#include "include/cassandra.h"
+
+#endif /* CCassandra_h */