v0.6.3

• Add afpsql inspect for schema discovery — list databases, schemas, tables, and columns without hand-writing catalog queries
• Add --dry-run to prepare and validate a statement server-side without executing it
• Add --explain and --explain-analyze to wrap a query in its execution plan
• Add pipe-mode begin/commit/rollback requests for explicit multi-statement transactions on a session
• Soft-truncate oversized inline result sets instead of erroring out, so large reads degrade gracefully
• Eliminate the cancel race with an atomic terminal-emit claim so a cancelled query can never double-emit a terminal frame
• Harden value decoding — surface decode errors instead of silently emitting null, and correctly handle bytea and array types
• Preserve the --param string form and bind NUMERIC values without precision loss
• Unify the error code dispatch and report connection identity in session_info responses
• Upgrade to rustc 1.96 and refresh workspace dependencies