unch v0.4.1

unch v0.4.1

v0.4.1 is the publishable v0.4 release. It includes the v0.4 workflow expansion changes and fixes the release-blocking llama.cpp runtime ABI mismatch that broke the v0.4.0 tag smoke test.

Highlights

• Added --provider openrouter for index, search, and MCP, with unch auth openrouter --token ... for storing API keys outside the project tree
• Added Rust Tree-sitter indexing for functions, methods, structs, traits, impl blocks, enums, modules, and attached docs
• Upgraded the local index schema to isolate snapshots by provider, model, and embedding dimension, so local llama.cpp models and remote OpenRouter models can coexist in the same .semsearch state
• Added unch start mcp, a stdio MCP server exposing workspace_status, search_code, and index_repository
• Added MCP initialize instructions that tell agents to check workspace status first, search before broad file reads, and rebuild the index only when needed
• Added npm wrapper installation support for the CLI and MCP entrypoint
• Updated github.com/hybridgroup/yzma to v1.13.0, fixing first-run local indexing with the current downloaded llama.cpp runtime archives

Upgrade notes

• Local index storage moves to schema version 2. Existing v1 indexes are reset automatically, so run unch index --root . once after upgrading
• OpenRouter credentials can be saved globally in ~/.config/unch/tokens.json; use unch auth openrouter --local --token ... only when you intentionally want repository-local credentials in .semsearch/tokens.json
• MCP uses stdio only in this release. Configure clients with command unch and arguments start mcp, or run unch start mcp directly from the repository root
• If you install from source, use go install github.com/uchebnick/unch/cmd/unch@v0.4.1