Remove LoopSnapshotManager which was only used by its own internal tests.
No external call sites existed.
- Delete loop_snapshot_manager.rs (~458 lines)
- Update mod.rs to remove module declaration
- Update PHI_BOX_INVENTORY.md and TASKS.md
Analysis showed all other F-2.2 candidates have production dependencies
and must wait for JoinIR coverage expansion:
- PhiBuilderBox - loop_builder.rs
- LoopSnapshotMergeBox - loopform_builder.rs, json_v0_bridge
- if_phi.rs - lifecycle.rs, if_form.rs, loop_builder.rs
- if_body_local_merge.rs - phi_builder_box.rs, loop_builder.rs
- phi_invariants.rs, conservative.rs, phi_input_collector.rs - multiple
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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