%% View 3c — Runtime flow: a world query, tool-backed.
%% Traced through internal/router/worldquery.go, internal/router/source.go,
%% cmd/mavend/actions_query.go queryWalk + querySources, cmd/mavend/personalboundary.go,
%% cmd/mavend/searchwire.go, cmd/mavend/kiwixwire.go.
%% Shows destination anchoring, which sources are skipped and why, and the
%% four-step fallback to the model's own weights.
sequenceDiagram
  autonumber
  participant K as Owner
  participant H as runTurn
  participant R as router cascade
  participant QC as actionQuery
  participant W as queryWalk
  participant LOC as local sources
  participant PB as personal boundary
  participant SX as SearXNG
  participant KX as kiwix-server
  participant PH as phraser / resident model
  participant REC as decision record

  Note over K,H: "что такое TCP?"
  K->>H: utterance
  H->>R: rt.resolve
  R->>R: stage 0 — WorldQueryGrammars matches a literal definition frame
  R->>R: d.SourceAnchored = true, set HERE and nowhere else
  R-->>H: IntentQuery, Source=SourceWorld, anchored

  H->>QC: applyAction → actionQuery
  QC->>REC: Expect the full 22-source roster
  QC->>W: queryWalk(SourceWorld, anchored=true)

  rect rgb(70,40,40)
    Note over W: removes ONLY sources with guesses:true whose dest ≠ world
    W-->>REC: skipped: attention, list, feeds, home, network, weather, self
    W-->>REC: skipped: personal boundary — anchored, so a literal pattern may drop it
    Note right of W: a model or a softmax naming SourceWorld<br/>would NOT drop the boundary (V-666)
  end

  W-->>QC: the sources that LOOK still walk, in table order

  loop first source to claim answers the turn
    QC->>LOC: fact-by-key, day-plan, habits, tasks, money, history, calendar
    LOC-->>QC: no rows → pass
    QC->>LOC: embed → memory → notes (vector recall, gated by min score + margin)
    LOC-->>QC: below the gate → pass
    QC->>PB: personal boundary
    PB-->>QC: SKIPPED this turn
    QC->>SX: Search(utterance verbatim, max 4)
    alt results
      SX-->>QC: snippets
      QC->>PH: phraseSource("search", utterance, evidence)
      PH-->>QC: reply
      QC->>REC: claimed by "search", and everyone below is NeverAsked
    else empty or unreachable
      QC->>KX: ZIM search, ru then en
      alt hit
        KX-->>QC: article snippet
        QC->>PH: phraseSource("kiwix", ...)
      else miss
        QC->>QC: "web" claims only if he named a URL out loud
        QC->>PH: queryGeneral — the model answers from its own weights, LAST
      end
    end
  end

  QC-->>H: reply text
  H-->>K: spoken or written answer

  Note over LOC,SX: What leaves the box is the query string and nothing else.<br/>His notes, his facts, the persona block and the history never travel.
  Note over W,PB: With no destination named — the classifier arm sets none —<br/>the whole chain walks in table order. That is the floor.