Consolidate per-package package-lock.json files into a single root-level
workspace lockfile. Update all consumers:
- Nix: shared src/npmDeps/npmDepsHash in lib.nix; devshell hook stamps
package.json paths then runs npm ci from root; individual .nix files
use mkNpmPassthru attrs instead of per-package fetchNpmDeps.
- Python CLI: new _workspace_root() helper so _tui_need_npm_install,
_make_tui_argv, _build_web_ui resolve lockfile/node_modules from the
workspace root.
- Desktop: replace --force-build/mtime heuristic with content-hash build
stamp (_compute_desktop_content_hash via pathspec). Remove --force-build
flag.
- Dockerfile: single root npm install; no per-directory lockfile copies.
- CI: nix-lockfile-fix and osv-scanner reference root package-lock.json;
apps/dashboard → apps/desktop.
- Tests: new test_tui_npm_install.py; desktop stamp tests in
test_gui_command.py; updated assertions in test_cmd_update.py,
test_web_ui_build.py, test_dockerfile_pid1_reaping.py.
- Docs: remove --force-build from desktop flag table.
Deleted: apps/desktop/package-lock.json, ui-tui/package-lock.json,
ui-tui/packages/hermes-ink/package-lock.json, web/package-lock.json.