What Happened
- This PR’s primary change is a migration to tool-mode-only execution for byterover query/curate workflows: `brv-query` and curate now run through provider-free MCP envelopes, `brv-curate` is replaced by `brv-curate-html`, and `BRV_*_TOOL_MODE` switches are removed.
- This PR’s primary change is a migration to tool-mode-only execution for byterover query/curate workflows: `brv-query` and curate now run through provider-free MCP envelopes, `brv-curate` is replaced by `brv-curate-html`, and `BRV_*_TOOL_MODE` switches are removed.
- 1 evidence item attached for review.