v1.0.2

fix(devcontainer): harden pnpm path and workspace mount setup

Pin pnpm's major version (PNPM_VERSION=10) instead of @latest so build
behavior can't drift silently, and add $PNPM_HOME/bin to PATH so the
global-bin-dir convention resolves correctly.

Pin workspaceMount to /workspaces/sigma so the repo mounts there
regardless of the host folder name. Otherwise Dev Containers mounts at
/workspaces/<host-basename> while workspaceFolder and the node_modules
volume target /workspaces/sigma, breaking post-create's pnpm install.