feat(B-0056.1): smallest safe slice — pure-TS mythology-resonance candidate schema + Heimdallr seed + validator stub (re-decomposed)

docs/backlog/P2/B-0056-mythology-research-track.md

@@ -7,7 +7,7 @@ tier: operational-resonance-research
 effort: L
 ask: Aaron 2026-04-21 — *"hemdal"* (Heimdallr, single-word candidate) then *"mythology backlog"*
 created: 2026-04-26
-last_updated: 2026-05-02
+last_updated: 2026-05-10
 depends_on: []
 composes_with: [project_operational_resonance_instances_collection_index_2026_04_22.md, feedback_operational_resonance_engineering_shape_matches_tradition_name_alignment_signal.md, feedback_no_permanent_harm_mathematical_safety_retractibility_preservation.md, B-0057, B-0058, B-0059, docs/ALIGNMENT.md]
 tags: [mythology, heimdallr, hermes, mercury, janus, iris, ratatoskr, thoth, garuda, quetzalcoatl, loki, bridge-figures, messenger, paired-dual, three-filter, F1-F2-F3]
@@ -30,6 +30,16 @@ Three-filter honest pass recorded in the operational-resonance index:
 
 **Status:** candidate, pending second textual anchor or Aaron confirmation to promote to confirmed. Second bridge-figure member would LOCK the bridge-figure sub-structure's definition (currently defined by Melchizedek alone).
 
+## Smallest safe slice (B-0056.1) — re-decomposition
+
+Re-decomposed from broad L-effort track (assumes initial doc-only decomp had mistake lacking executable check surface).
+
+**Bounded step:** pure-TS mythology candidate schema + three-filter types + Heimdallr seed + validator stub (modeled on B-0055.2 edge-claims pattern).
+
+- File: `tools/mythology-resonance/candidate-schema.ts`
+- Focused checks: type check + manual review of retractibility note + build gate (0w 0e)
+- One PR only; wider candidates (Hermes etc.) become later .2+ children after this lands.
+
 ## Wider-track candidates (to be triaged individually)
 
 - **(a) Hermes (Greek) / Mercury (Roman)** — messenger god, psychopomp, boundary-crosser, patron of thieves AND communication. Load-bearing in Homeric + Orphic traditions, Hellenistic mystery cults, Renaissance hermeticism (overlap with occult track B-0057). Structural match: unified-endpoint-across-realms shares shape with tele+port+leap (#4); psychopomp function shares shape with Μένω-persistence-through-discontinuity (#9). Strong F3 across two Indo-European tradition branches.

tools/mythology-resonance/candidate-schema.ts

@@ -0,0 +1,59 @@
+// Mythology operational-resonance candidate schema (B-0056.1 smallest safe slice)
+// Pure-TS, retractibility-native stub. Re-decomposed from broad B-0056 L research track
+// (assumes initial doc-only decomposition had mistake by lacking executable check surface).
+
+export type ThreeFilterResult = {
+  readonly f1Pass: boolean;
+  readonly f2Strength: 'weak' | 'moderate' | 'strong';
+  readonly f3Pass: boolean;
+  readonly notes: string;
+};
+
+export type MythologyCandidate = {
+  readonly id: number;
+  readonly name: string;
+  readonly tradition: string;
+  readonly role: string; // e.g., 'bridge-figure', 'messenger', 'boundary'
+  readonly threeFilter: ThreeFilterResult;
+  readonly textualAnchors: readonly string[];
+  readonly state: 'candidate' | 'confirmed' | 'failed-filter' | 'superseded';
+  readonly retractibilityNote: string;
+};
+
+export type ValidationResult = {
+  readonly valid: boolean;
+  readonly errors: readonly string[];
+  readonly retractibilityPreserved: boolean;
+};
+
+// Minimal validator stub — future slices extend with real filter checks against ALIGNMENT.md + resonance index
+export function validateMythologyCandidate(candidate: MythologyCandidate): ValidationResult {
+  // Bounded slice: type-level + stub; no full impl yet (one step only)
+  const errors: string[] = [];
+  if (!candidate.name || candidate.name.length < 3) errors.push('name too vague');
+  if (!candidate.threeFilter.f3Pass && candidate.state === 'confirmed') errors.push('confirmed requires F3 pass');
+  if (candidate.textualAnchors.length === 0) errors.push('missing textual anchor for research-grade');
+
+  return {
+    valid: errors.length === 0,
+    errors,
+    retractibilityPreserved: true, // stub — real impl will verify git-tracked revision blocks
+  };
+}
+
+// Seed: Heimdallr (candidate #12 from origin)
+export const heimdallrSeed: MythologyCandidate = {
+  id: 12,
+  name: 'Heimdallr',
+  tradition: 'Norse',
+  role: 'bridge-figure',
+  threeFilter: {
+    f1Pass: true,
+    f2Strength: 'strong-but-looser',
+    f3Pass: true,
+    notes: 'F3 within Norse but thinner canonicity (Christianization-filtered Eddas); second anchor pending',
+  },
+  textualAnchors: ['Poetic Edda', 'Prose Edda'],
+  state: 'candidate',
+  retractibilityNote: 'git-tracked; one-commit removable; no permanent harm',
+};