harness-base.nix has never existed in this tree. Four comments named it,
or a `harness-base` module, as the place to look:
- weston-vnc.nix: the agent user is declared and home-chowned by
nix/agent-modules/user.nix
- hive-ci.nix: the sandbox-fallback reasoning lives in
nix/agent-modules/default.nix -- which the very next comment block in
the same file already cites correctly
- packages/default.nix: the per-bin consumer is
nix/agent-modules/packages.nix
- hive-sh4re/src/assets.rs: HIVE_ASSETS_DIR is set by
hive-c0re/environment.nix and agent-modules/default.nix +
agent-service.nix, and the package is built by nix/packages/assets.nix
-- not the equally nonexistent nix/assets.nix
assets.rs was twice declared out of scope on the sibling PR because it
names a module rather than a file. That distinction was real and
irrelevant: neither the module nor the nix/assets.nix path it points at
exists. Reading the wording is not checking the reference.
Every replacement path was verified to exist, with a deliberately bogus
path as a control.
