Conciseness

The body avoids concept over-explanation, but the Quick Start section duplicates Operations 1-3 (initialize, save/load, and update_feature appear twice with near-identical code), and roughly 85 lines of JSON schemas plus the progress-file format are inlined even though the References section claims complete schemas live in references/STATE-SCHEMA.md. Mostly efficient but could be tightened, matching anchor 3.

Actionability

Operations 1-7 are concrete, copy-paste-ready API calls with real parameters and documented return values, and they match the actual scripts/state_tracker.py implementation. Minor gaps keep it below anchor 5: no error-path examples (e.g., what happens on an illegal passes transition or missing feature) and the 'from scripts.state_tracker import' path is assumed without setup guidance.

Workflow Clarity

The seven operations are individually listed with a rough Quick Start sequence, but validation is absent throughout: restore_checkpoint destructively overwrites feature_list.json and git state with no verify step, and there is no feedback loop for failed updates. Per the rubric's cap, missing validation around destructive operations holds this at anchor 3.

Progressive Disclosure

Judged against the actual bundle: sections are well-organized and the References/Scripts lists are clearly signaled, but 5 of the 6 referenced bundle files do not exist (references/STATE-SCHEMA.md, references/FEATURE-LIFECYCLE.md, scripts/feature_manager.py, scripts/checkpoint_store.py, scripts/progress_logger.py), and the full schema content that clearly belongs in a separate file is inlined in SKILL.md, matching anchor 2.

Specificity

The description names its domain ('State persistence for autonomous coding') and lists several action gerunds ('saving progress, loading state, tracking features, managing checkpoints'), but the actions operate on vague objects ('state', 'progress', 'data') and 'persisting data' merely restates the opening, falling short of anchor 4's concrete verb-and-object specificity.

Completeness

It has both a 'what' ('State persistence for autonomous coding') and an explicit 'Use when...' clause with concrete trigger phrases, satisfying anchor 4; the 'what' is a single abstract noun phrase rather than an enumerated capability list, so it does not clearly meet anchor 5.

Trigger Term Quality

The 'Use when' clause contains natural phrases users would say ('saving progress, loading state, tracking features, managing checkpoints'), matching anchor 4's good coverage; it misses common synonyms such as 'resume session', 'restore checkpoint', or 'handoff', so it does not reach anchor 5.

Distinctiveness Conflict Risk

The 'autonomous coding' scope combined with feature-tracking and checkpoint vocabulary carves a mostly distinct niche with minor overlap risk against generic persistence or git checkpoint skills, fitting anchor 4.