# Track state for metadata_generational_handle_20260624
# Child 2 of metadata_ssdl_defusing_20260624 campaign.
# 3 phases, 3 tasks. BLOCKED_BY child 1.

[meta]
track_id = "metadata_generational_handle_20260624"
name = "Child 2: Metadata Generational Handle"
status = "cancelled"
# Never started. The SSDL campaign was based on a wrong premise (the '6 nil-check
# functions' in code_path_audit_gen.py:108 was a static text string, not a measurement).
# The actual fix for the 4.01e22 combinatoric explosion is type promotion (see
# code_path_audit_phase_2_20260624), not generational handles.
cancellation_reason = "Premise was wrong; no Metadata-typed nil-checks exist to defuse with a generational handle."
current_phase = 0
last_updated = "2026-06-24"

[parent]
parent_campaign = "metadata_ssdl_defusing_20260624"

[blocked_by]
code_path_audit_20260607 = "shipped"
metadata_nil_sentinel_20260624 = "shipped"

[blocks]
# Within the campaign:
metadata_field_cache_20260624 = "pending child 2"

[phases]
phase_1 = { status = "pending", checkpointsha = "", name = "Behavioral Test" }
phase_2 = { status = "pending", checkpointsha = "", name = "Implementation (Handle + Registry + migrations)" }
phase_3 = { status = "pending", checkpointsha = "", name = "Verification + Budget Gate" }

[tasks]
t1_1 = { status = "pending", commit_sha = "", description = "Write tests/test_metadata_generational_handle.py with 4 tests (red)" }
t2_1 = { status = "pending", commit_sha = "", description = "Add MetadataHandle + MetadataHandleRegistry + migrate lifetime-check sites" }
t3_1 = { status = "pending", commit_sha = "", description = "Run all 6 VCs; capture budget gate measurement; write TRACK_COMPLETION; update state + tracks.md" }

[verification]
vc1_handle_and_registry_exist = false
vc2_production_uses_registry = false
vc3_behavioral_test_passes = false
vc4_budget_gate_met = false
vc5_full_test_suite_green = false
vc6_audit_gates_clean = false

[budget_gate]
baseline = "post_child_1_measurement"
expected_drop_pct = 20
post_child_2_measurement = null