* fix(claude): preserve native MCP timeouts
Paseo forced Claude MCP startup and tool waits to ten minutes, turning unavailable servers into long silent first turns. Let Claude apply its own defaults while preserving explicit user environment overrides.
* test(claude): isolate MCP timeout regression
Exercise timeout precedence through the existing provider runtime environment input without mutating process-wide test state.
* test(workspace-git): await refresh boundaries
Synchronize fetch observation tests with initial snapshot and fetch completion before advancing fake timers.
