Reorg step 1: consolidate repo under core/, drop the mafiabot label

Mechanical structure-only pass (no document/guide content edits):

- Move src/ichor, src/endocrine, and docs/ into core/; the old top-level
  mafiabot_core/ becomes core/. Everything now lives under a single core/ root.
- Drop the "mafiabot" label from the Ada/Alire crate: core.gpr (project Core),
  alire.toml name = "core"; the generated *_config.* regenerate as core_config.*.
- Repoint build-critical wiring only:
  - .claude/skills/run-sica-fondt/smoke.sh (ponyc + Ada + COBOL paths)
  - core/src/endocrine R source()/runner paths and the test glob
  - .github/workflows/ci.yml (working-directory + gpr name)

Verified green: smoke ALL GREEN (Pony Ichor, Ada core crate + tests, COBOL E1
vault); R endocrine 14/0; Octave ETR 26/0/1.

Deferred (reserved for a less-ephemeral doc/guide pass): docmap.yaml, the guide
files and nested AGENTS.md/README prose + now-stale relative links, SOUL.md, and
the deeper ring/storage restructure.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015hmgREHNsxYCuim33yUF2c

core/docs/plans/E2-variant-stores.md

@@ -0,0 +1,40 @@
+# E2 — VARIANT stores  *(DESIGN-FIRST)*
+
+## 1. Component
+The shifting self: several stores — **beliefs · relationships · memories · self-image** — and the
+(unspecified) mechanism by which they combine into "who you are now."
+
+## 2. Status / certainty
+DESIGN-FIRST · set **C3** (the four stores are named), **combine-mechanism + backing C1**
+("projected together" was the nearest label, not the mechanism).
+
+## 3. Language & location
+TBD · new location e.g. `src/variant/`. Backing undeclared (not GnuCOBOL — that's the invariant E1).
+
+## 4. Does / does-not
+- **Does:** hold the four shifting stores; supply the memory that Eth-Int's conviction array (A7) and
+  PS+'s priors (A5) derive from; combine into the live self-state.
+- **Does-not:** be the invariant core (E1) or the identity face (B2 SOUL.md is the *standing* self; this is the *shifting* substrate).
+
+## 5. Interface contract (proposed)
+- Four stores: `beliefs`, `relationships`, `memories`, `self_image`; each `read/write` behind Ada (D1).
+- `combine(beliefs, relationships, memories, self_image) -> who_you_are_now` — **mechanism undefined (C1)**.
+- No append-only logs anywhere (arch §10).
+
+## 6. Dependencies & stubs
+E1 invariant (bedrock) — *stub:* in-memory. Consumers A5/A7 — *stub:* seed entries.
+
+## 7. Invariants / laws
+- **L1 (C4):** all memory sits behind Ada; writes carry provenance.
+- **L2 (C5):** **no append-only logs** anywhere.
+- **L3 (C1):** the combine-mechanism (how four stores → one self-now) — undefined.
+
+## 8. Build steps
+1. Choose backing. 2. Define the four store schemas. 3. **Design the combine-mechanism** (the hard open part).
+4. Wire A5/A7 to derive from it.
+
+## 9. Tests
+Per-store read/write behind a D1 stub; no-append-only assertion; combine() determinism once defined.
+
+## 10. Open items
+- **Combine-mechanism** (C1, the central unknown). **Backing** (C1). Relationship to E1 invariant (C1).