Hermes Plugin Byterover 1.0.1

Superseded by v1.0.2 (drops the empty pyproject.toml so unattended migration installs without a dependency prompt). First release maintained by Nous Research. Code is the plugins/memory/byterover provider from hermes-agent@2fa2f42d412a, verbatim; this is the pin the Hermes plugin catalog lists as byterover.

• Synced with every core fix since the September handoff copy.
• In-tree tests ported to tests/; CI runs them on Linux, macOS and Windows against hermes-agent main.
• Existing memory.provider: byterover users keep their config and data; once core drops its bundled copy, hermes update installs this plugin from the catalog automatically.