Add scripts/semantic-spacetime.py, a stdlib-only Python 3.10+ CLI for
sst-model-v1 models: model lint (schema validation with coverage summary),
model map (gamma(3,4) text/mermaid/json rendering), model distance (weighted
hop distance, weight |link| + 1 per hop), model trajectory (simple-path
enumeration with cycle notes), and model drift (snapshot diff). Pins the
promise-contract.py conventions: exit codes 0/1/2, --json single-object
purity on dispatched paths, --dry-run no-op guard, never a traceback, module
import with no side effects.
Add the stdlib unittest suite (50 black-box subprocess cases), trigger
probes with the committed Load By Need routing and anti-trigger refusal
tables, and the tracked sample-model fixture materialized from the template's
delimited example. Update SKILL.md and README Quick Start to the real
--help command surface.
Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>
Magnus Hedemarkandfactory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>