feat: wire Loop 1 + Loop 2 into all phase execution paths

[jobordu]

Summary

• quick-362: Wire debug routing (Loop 1 — task classification + /nf:debug + autoresearch-refine + debug_context injection) into execute-phase.md Step 1.5, matching quick.md Step 5.8 pattern
• quick-363: Push Loop 2 (formal_coverage_auto_detection + solution-simulation-loop) and debug_context passthrough into execute-plan.md Pattern A spawn prompt so nested child executors inherit both loops

Coverage matrix after this PR

Execution Path	Loop 1 (debug routing)	Loop 2 (simulation)
quick.md	Yes — Step 5.8	Yes — executor prompt
execute-phase.md → Pattern C	Yes — Step 1.5	Yes — same context
execute-phase.md → Pattern A	Yes — Step 1.5	Yes — child inherits (363)
execute-phase.md → Pattern B	Yes — Step 1.5	Yes — orchestrator commits
execute-phase.md → Pattern D	Yes — Step 1.5	No — opt-in parallel, deferred
solve-remediate B→F	Yes — dispatches /nf:debug	N/A

Test plan

• CI passes (no code changes — workflow markdown only)
• Verify execute-phase.md contains Step 1.5 classification + debug routing
• Verify execute-plan.md Pattern A prompt includes <formal_coverage_auto_detection> and ${PARENT_DEBUG_CONTEXT}

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