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judge_root_cause(): runs 3 perspective_fns (correctness/requirement- completeness/skill-defect, 04-P §4.3), requires >=2/3 agreement on a category or raises InconclusiveEscalateError with all raw judgments attached (REQ-04's failure case). trace_root_cause_test_failed() creates a brand-new bug_record on agreement; trace_root_cause_human_reported() field-completes an existing one instead (04-P's explicit distinction between the two origins, not a new record either way). c_bug_record_create (bug_record.py): validates root_cause_category against {planning, coder, skill_defect} -- core_engine deliberately excluded, matching U-001's schema CHECK constraint (PH5/U-034 scope). Known, deliberately-unenforced gap noted rather than guessed at: 03-C §3.10's "skill_defect requires creating a skill_iteration_suggestion" constraint can't be satisfied yet (skill_iteration.before/after_git_commit_sha are NOT NULL but don't exist until a real skill rewrite happens in U-018) -- REQ-04's three cases never exercise skill_defect, so nothing here needs it resolved yet. real_validator_perspective() builds a real claude --agent validator call framed from one of the three perspectives, parsing a CATEGORY:/DETAIL: response format. Also fixes a real diagnostic bug found investigating an unrelated failure: org_node_trigger.py/work_graph_plan.py/work_graph_execute.py's nonzero-exit error paths only included stderr in the raised exception, silently dropping stdout -- which is where a real `claude` failure's actual detail often lives. A real Coder call failed with exit 1 and empty stderr, giving zero diagnostic signal; fixed to include both streams (truncated). 18 new mocked stdlib unittest cases + 1 gated real test (3 real Validator perspective calls judging a deliberately-injected wall-collision bug, expecting agreement on root_cause_category=coder). 146 total mocked tests across U-001-015, all passing. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
