Summary

• make omitted provider mean all providers for LCM status, grep, and load-session transcript reads
• require an explicit provider for provider-local lifecycle/detail tools instead of silently falling back to cursor
• update MCP tool schemas and regression coverage for all-provider defaults

Verification

• cargo fmt -- --check
• git diff --check
• cargo test -q --test mcp_suite lcm_
• cargo test -q --test session_suite lcm_query
• cargo clippy --workspace --all-targets --locked -- -D warnings
• scripts/check-conventional-commits.sh origin/master..HEAD