pub struct Archive {
  items : Map[String, Artifact]
  path : String
}

pub struct Artifact {
  id : String
  parent_id : String?
  goal : String
  note : String
  code : String
  score : Double
  parts : Map[String, Double]
  children : Int
  created_at : String
}

pub struct CurriculumItem {
  level : CurriculumLevel
  goal : String
  min_score : Double
}

pub enum CurriculumLevel {
  L1
  L2
  L3
  L4
} derive(Eq, 
@moonbitlang/core/debug.Debug
Debug)

pub struct GhCode {
  repository : String
  path : String
  html_url : String
  score : Double
}

pub struct GhRepo {
  full_name : String
  description : String
  stargazers_count : Int
  language : String
  html_url : String
  topics : Array[String]
}

pub enum MutationKind {
  Rewrite
  Simplify
  Generalize
  Specialize
  Combine
} derive(Eq, 
@moonbitlang/core/debug.Debug
Debug)

pub struct SearchCandidate {
  name : String
  title : String
  source : String
  mechanism : String
  portable : Bool
}

pub struct SkillEntry {
  name : String
  description : String
  source_artifact_id : String
  score : Double
  tags : Array[String]
}

fn analyze_candidate(name : String, title : String, source : String, mechanism : String) -> SearchCandidate

fn assess_portability(c : SearchCandidate) -> Bool

fn can_graduate(current_score : Double, current_level : CurriculumLevel) -> Bool

fn candidates_to_tsv_lines(cands : Array[SearchCandidate]) -> String

fn code_search_to_tsv(json_text : String) -> String

fn code_search_url(query : String, per_page? : Int) -> String

fn code_to_candidates(codes : Array[GhCode]) -> Array[SearchCandidate]

fn coverage(a : Array[String], b : Array[String]) -> Double

fn critic_dup_sim() -> Double

fn critic_most_similar(arc : Archive, note : String) -> (String, String, Double)?

fn critic_review(arc : Archive, note : String, score : Double, threshold? : Double) -> Json

fn curl_repo_search(query : String, token? : String) -> String

fn curriculum_progress(current_score : Double) -> Double

fn decision_to_string(level : CurriculumLevel, mutation : MutationKind, distillable : Bool) -> String

fn derive_skill_name(_goal : String, note : String) -> String

fn distill_candidates(cands : Array[SearchCandidate]) -> Array[SearchCandidate]

fn distill_code_search(json_text : String) -> Array[SearchCandidate]

fn distill_repo_search(json_text : String) -> Array[SearchCandidate]

fn distill_skill(artifact_id : String, goal : String, note : String, score : Double) -> SkillEntry?

fn evolve_decision(current_score : Double) -> (CurriculumLevel, MutationKind, Bool)

fn evolve_lesson_persist(store : 
@vicTop-cw/fist-mbt/src/store.SqliteStore
SqliteStore?, id~ : String, cat : String, reason : String, fix : String, now : String, score? : Double) -> Bool

fn github_json_to_tsv(json_text : String) -> String

fn is_distillable(score : Double, note : String) -> Bool

fn is_duplicate_candidate(a : SearchCandidate, b : SearchCandidate) -> Bool

fn is_robust(score : Double, floor? : Double) -> Bool

fn jaccard(a : Array[String], b : Array[String]) -> Double

fn lesson_goal(cat : String) -> String

fn lesson_ts_part(now : String) -> String

fn mutation_prompt(kind : MutationKind, goal : String, note : String) -> String

fn next_level(current_score : Double) -> CurriculumLevel

fn parse_code_search(json_text : String) -> Array[GhCode]

fn parse_repo_search(json_text : String) -> Array[GhRepo]

fn repo_search_to_tsv(json_text : String) -> String

fn repo_search_url(query : String, per_page? : Int, sort? : String) -> String

fn repos_to_candidates(repos : Array[GhRepo]) -> Array[SearchCandidate]

fn run_external_search(cmd : String, args : Array[String], runner? : (String, Array[String]) -> Result[String, String]?) -> Result[String, String]

fn score_accept(score : Double, threshold? : Double) -> Bool

fn score_artifact(coverage : Double, fingerprint_ok : Bool, schema_ok : Bool, accuracy : Double) -> Double

fn score_of_lesson(score : Double) -> Double

fn score_rank(score : Double) -> String

fn select_mutation(score : Double, parents? : Int) -> MutationKind

fn standard_curriculum() -> Array[CurriculumItem]

fn suggest_next_goal(current_score : Double) -> String

fn tag_skill(skill : SkillEntry, keywords : Array[String]) -> SkillEntry

fn tokens(s : String) -> Array[String]

fn topic_search_url(topic : String, per_page? : Int) -> String

fn unigrams(s : String) -> Array[String]