Support batch commands in single connection

[engalar]

Problem

Each ./mxcli -p app.mpr -c "COMMAND" invocation opens a new connection to the MPR file. When exploring a project, AI agents typically need 10-20 sequential commands, each paying the connection overhead (Connected to: project.mpr).

Proposal

Option A: Semicolon-separated commands

./mxcli -p app.mpr -c "DESCRIBE MICROFLOW A.X; DESCRIBE MICROFLOW A.Y; DESCRIBE ENTITY A.Z"

Option B: Stdin/pipe mode

echo "DESCRIBE MICROFLOW A.X
DESCRIBE MICROFLOW A.Y
DESCRIBE ENTITY A.Z" | ./mxcli -p app.mpr --stdin

Or from a file:

./mxcli -p app.mpr < commands.txt

Option C: Both

Support both semicolons in -c and stdin pipe mode.

Benefits

• Eliminates N-1 connection overhead for N commands
• Enables AI agents to batch all exploration queries into one call
• Reduces wall-clock time for project exploration significantly

Priority

High — directly reduces the number of round-trips, which is the main bottleneck for AI-assisted exploration.

[ako]

The first option is already implemented, exactly as described.

[ako]

Option B, from a file, is also implemented: mxcli exec -p app.mpr script.mdl