ableton-mcp-ai/ralph/tasks/failed/20260403-211425-20260403-211423-sprint-v0-1-43-unlock-backbone-e/CONTEXT.md

Read these first:

• previous run directory:
  • C:\ProgramData\Ableton\Live 12 Suite\Resources\MIDI Remote Scripts\ralph\runs\20260403-203815-queue
• previous summary:
  • C:\ProgramData\Ableton\Live 12 Suite\Resources\MIDI Remote Scripts\ralph\runs\20260403-203815-queue\SUMMARY.md
• previous reviews:
  • C:\ProgramData\Ableton\Live 12 Suite\Resources\MIDI Remote Scripts\ralph\runs\20260403-203815-queue\reviews\codex_master_pre_fix.json
  • C:\ProgramData\Ableton\Live 12 Suite\Resources\MIDI Remote Scripts\ralph\runs\20260403-203815-queue\reviews\opencode_qwen3coder_plus.json
  • C:\ProgramData\Ableton\Live 12 Suite\Resources\MIDI Remote Scripts\ralph\runs\20260403-203815-queue\reviews\opencode_glm47.json
• previous validation report:
  • docs/SPRINT_v0.1.42_VALIDATION_REPORT.md

Most important evidence files from the previous run:

• temp/v04142_mcp_calls_final.jsonl
• temp/v04142_comprehensive_validation.json
• temp/v04142_audio_pattern_results.json
• temp/v04142_edit_actions.json

Primary source files:

• AbletonMCP_AI/MCP_Server/server.py
• abletonmcp_init.py
• AbletonMCP_AI/abletonmcp_runtime.py
• AbletonMCP_AI/MCP_Server/sample_selector.py

Execution priority for this sprint:

1. preserve the proven live connection and working arrangement-audio path
2. make the blocked backbone path succeed, or formalize a supported fallback in code
3. validate the previously missing live MCP tools
4. deliver one measurable coherence improvement
5. validate snare selectivity in a real runtime path
6. report only what repository evidence proves

Do not overclaim. The previous run proved that live editing is partially possible. This sprint exists to turn that partial proof into a repeatable, code-backed, measurable project improvement.