Add SerenAI Cloud documentation to all READMEs

Author: taariq

README-MongoDB.md

@@ -2,6 +2,25 @@
 
 This guide explains how to replicate MongoDB databases to PostgreSQL using database-replicator's JSONB storage approach.
 
+---
+
+## SerenAI Cloud Replication
+
+**New to SerenAI?** Sign up at [console.serendb.com](https://console.serendb.com) to get started with managed cloud replication.
+
+When replicating to SerenDB targets, this tool runs your replication jobs on SerenAI's cloud infrastructure automatically:
+
+```bash
+export SEREN_API_KEY="your-api-key"  # Get from console.serendb.com
+database-replicator init \
+  --source "mongodb://user:pass@mongo-host:27017/db" \
+  --target "postgresql://user:pass@your-db.serendb.com:5432/db"
+```
+
+For non-SerenDB targets, use the `--local` flag to run replication locally.
+
+---
+
 ## Overview
 
 The tool automatically detects MongoDB connection strings and replicates collections to PostgreSQL using a JSONB storage model. All BSON types are preserved with full type fidelity, including ObjectIds, DateTimes, Binary data, and MongoDB-specific types.

README-MySQL.md

@@ -2,6 +2,25 @@
 
 This guide explains how to replicate MySQL and MariaDB databases to PostgreSQL using database-replicator's JSONB storage approach.
 
+---
+
+## SerenAI Cloud Replication
+
+**New to SerenAI?** Sign up at [console.serendb.com](https://console.serendb.com) to get started with managed cloud replication.
+
+When replicating to SerenDB targets, this tool runs your replication jobs on SerenAI's cloud infrastructure automatically:
+
+```bash
+export SEREN_API_KEY="your-api-key"  # Get from console.serendb.com
+database-replicator init \
+  --source "mysql://user:pass@mysql-host:3306/db" \
+  --target "postgresql://user:pass@your-db.serendb.com:5432/db"
+```
+
+For non-SerenDB targets, use the `--local` flag to run replication locally.
+
+---
+
 ## Overview
 
 The tool automatically detects MySQL/MariaDB connection strings and replicates data to PostgreSQL using a JSONB storage model. All MySQL data is preserved with full type fidelity, including DECIMAL precision, DATETIME microseconds, and BLOB data.

README-PostgreSQL.md

@@ -4,6 +4,23 @@ Zero-downtime database replication using PostgreSQL logical replication with con
 
 ---
 
+## SerenAI Cloud Replication
+
+**New to SerenAI?** Sign up at [console.serendb.com](https://console.serendb.com) to get started with managed cloud replication.
+
+When replicating to SerenDB targets, this tool runs your replication jobs on SerenAI's cloud infrastructure automatically. Just set your API key and run:
+
+```bash
+export SEREN_API_KEY="your-api-key"  # Get from console.serendb.com
+database-replicator init \
+  --source "postgresql://user:pass@source:5432/db" \
+  --target "postgresql://user:pass@your-db.serendb.com:5432/db"
+```
+
+For non-SerenDB targets, use the `--local` flag to run replication locally.
+
+---
+
 ## Overview
 
 This guide covers replicating PostgreSQL databases from any PostgreSQL provider (Neon, AWS RDS, Hetzner, self-hosted, etc.) to another PostgreSQL database (including Seren Cloud). The tool uses PostgreSQL's native logical replication for zero-downtime replication with continuous sync.

README-SQLite.md

@@ -2,6 +2,23 @@
 
 This guide explains how to replicate SQLite databases to PostgreSQL using database-replicator's JSONB storage approach.
 
+---
+
+## SerenAI Cloud Replication
+
+**New to SerenAI?** Sign up at [console.serendb.com](https://console.serendb.com) to get a managed PostgreSQL database optimized for AI workloads.
+
+**Note:** SQLite replication requires local execution (the `--local` flag) since the source file must be accessible from your machine.
+
+```bash
+database-replicator init \
+  --source /path/to/database.db \
+  --target "postgresql://user:pass@your-db.serendb.com:5432/db" \
+  --local
+```
+
+---
+
 ## Overview
 
 The tool automatically detects SQLite database files and replicates them to PostgreSQL using a JSONB storage model. All SQLite data is preserved with full type fidelity, including BLOBs, NULLs, and special float values.

README.md

@@ -12,6 +12,30 @@ Replicate any database to PostgreSQL with zero downtime. Supports PostgreSQL, SQ
 
 ---
 
+## SerenAI Cloud Replication
+
+**New to SerenAI?** Sign up at [console.serendb.com](https://console.serendb.com) to get started with managed cloud replication.
+
+SerenAI provides managed PostgreSQL databases optimized for AI workloads. When replicating to SerenDB targets, this tool can run your replication jobs on SerenAI's cloud infrastructure - no local resources required.
+
+**Benefits of SerenAI Cloud Execution:**
+- No local compute resources needed
+- Automatic retry and error handling
+- Job monitoring and logging
+- Optimized for large database transfers
+
+To replicate to SerenDB, simply run:
+```bash
+export SEREN_API_KEY="your-api-key"  # Get from console.serendb.com
+database-replicator init \
+  --source "postgresql://user:pass@source:5432/db" \
+  --target "postgresql://user:pass@your-db.serendb.com:5432/db"
+```
+
+For local execution (non-SerenDB targets), use the `--local` flag. See [Remote Execution](#remote-execution-serendb-only) for details.
+
+---
+
 ## Overview
 
 `database-replicator` is a command-line tool that replicates databases from multiple sources to PostgreSQL (including Seren Cloud). It automatically detects your source database type and handles the replication accordingly: