4 skeleton files: report.md (17 section headers; will be filled by Tier 1 in phase 3), comparison_table.md (5 sample rows; will be filled by Tier 1 in phase 4), decisions.md (3 sample entries; will be filled by Tier 1 in phase 4), nagent_takeaways_fable_20260617.md (17th takeaway placeholder; will be filled by Tier 1 in phase 4). state.toml updated to current_phase = 1.
Fable artifact at docs/artifacts/Fable System Prompt.md is NOT staged. Verified.
7 phases (init -> 10 parallel cluster dispatches -> 17 synthesis sections -> 3 side artifacts -> self-review -> user review -> register). Each phase has explicit task IDs (t1_1 .. t7_4) for Tier 2 to walk through. current_phase = 0 (spec approved, not started). Hard rule encoded in [meta]: docs/artifacts/Fable System Prompt.txt is NEVER committed.
Critical-analysis track for Anthropic's Claude Fable 5 system prompt (1585 lines, the public 'Mythos' version). 10 cluster sub-reports written by Tier 3 workers in parallel, synthesized by Tier 1 into a 17-section report (>3500 LOC) with 3 side artifacts. T-shirt size: XL. Fable artifact at docs/artifacts/Fable System Prompt.txt is local-only and MUST NOT be committed (per user hard rule). No day estimates (per conductor/workflow.md §Tier 1 Track Initialization Rules).
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