v0.11.1

Added

• DebugServer supports concurrent sessions: falls back to an OS-assigned ephemeral port when the configured port (9004) is already in use, and cleanup now only targets its own child process instead of every session sharing a session key (#89).
• xstep JSON output includes debug_port (always) and requested_port (only when a fallback occurred), so JSON-only callers can detect a port fallback (#90).

Changed

• Cachegrind profile parsing now streams the file in a single pass instead of loading it whole, reducing memory use on large profiles (#89).

Fixed

• DebugServer no longer silently discards session failures (listener-bind, connection, spawn errors); they now propagate with a non-zero exit and a stderr message (#89).
• Conditional breakpoints are sent DBGp-encoded instead of as unescaped source on the command line, fixing a silent parse error for conditions containing spaces (#89).
• A read failure mid-DBGp-frame no longer desyncs subsequent reads (#89).
• setBreakpoint() throws BreakpointException on an empty response instead of recording a breakpoint that was never actually set (#89).
• The MCP stdin loop no longer wedges on a single malformed line; each line is now parsed independently (#89).
• Non-UTF-8 bytes in tool output no longer break MCP response encoding (#89).
• CompareRunner removes its temporary git worktree on a fatal error, not only on normal return or a thrown exception (#89).