tricu CLI debugging notes

For ad-hoc expressions, prefer stdin mode and set TRICU_DB_PATH to a DB that already has library definitions imported:

TRICU_DB_PATH=/tmp/gpt.db ./result/bin/tricu eval -t decode <<'EOF'
main = <expression-to-run>
EOF

Important details:

• eval from stdin evaluates the submitted program and uses its final/main result.
• When using -f FILE, the CLI expects a main definition in the evaluated file context.
• With TRICU_DB_PATH=/tmp/gpt.db, definitions already loaded into that content store are in scope; do not add !import lines unless you intentionally want file import preprocessing.
• !import "lib/arboricx.tri" !Local is relative to the file being preprocessed; from temp files it will look under /tmp, so avoid that pattern for scratch files.
• Do not inspect huge Arboricx values with -t fsl; write small predicates/accessors and return booleans, numbers, or byte strings decoded with -t decode.