Clarify design principle: CaseALoweringShape does NOT look at function names.
Input must be LoopFeatures/LoopPatternKind only (structure-based detection).
Changes:
- Add detect_from_features(LoopFeatures, carrier_count, has_progress_carrier)
- Deprecate detect(LoopScopeShape) with backward-compat wrapper
- Case-A now rejects loops with `has_continue` (only break is allowed)
- Document Phase 170-B future work (loop body AST analysis)
Design Principle:
> "CaseALoweringShape は 関数名を見ない。LoopFeatures/LoopPatternKind だけを入力にする"
This ensures generic routing works for ANY structurally matching loop.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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