v0.1.5

Critical

• Fix mem_search response parser for real core format — the _parse_results() regex expected a --- [score] source --- format that no real memtomem-server ever produced; core's actual compact output ([rank] score | source > hierarchy) was collapsed into a single garbage result with wrong score. Rewritten to match core's _format_compact_result output.
• Forward context_window to MCP call — context_window configured in SurfacingConfig was silently swallowed by **kwargs and never sent to the core server.

Fixes

• Normalize list[str] namespace to comma-separated string before MCP call
• Widen source-file regex from .md-only to any file extension
• Widen namespace badge regex to support hyphens, dots, and other non-word characters
• Fix mypy errors in observability/tracing.py

Testing

• 975 automated tests (up from 963)
• New test_core_format_contract.py — 12 contract tests with snapshots of core's real formatter output