Commit fe1d855

Run the Claude Code host validator where it was missing and turn it into a load verdict. `agent-bundle build` now runs the same Claude Code checks as `validate --artifact` over every built `claude` and `plugin` target (`--host-validation` on by default, `--no-host-validation` to skip, `--strict` to promote host warnings to errors), and both commands follow the two `claude plugin validate --strict` runs with a `claude --plugin-dir <dir> plugin list --json` load check: a row with `errors` is reported as `AB7325` (a warning when the only errors are uninstalled declared dependencies), no row as `AB7311`, an unreadable listing as `AB6022`; the report carries `load.status` (`loaded`, `refused`, `unregistered`, `failed`). Without `claude` on `PATH`, `build` spawns once and reports a single informational `AB6019`. `agent-bundle doctor --host claude --from <dir>` runs the validator over the bundle and every installed copy (findings keep `AB6019`–`AB6022`, prefixed with the copy they came from) and reads each row's `enabled` flag: an installed-but-disabled copy is reported as `disabled` with the new `AB7327` warning naming the `claude plugin enable` command. The native Claude proofs now validate in plugin mode through the shared runner and record the documented symlink warning. (#488)