feat(persona-riven): §33 archive migration — 12 files + persona folder creation

memory/persona/riven/MEMORY.md

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+# Riven — Persona Memory Index
+
+Factory AI participant. Grok-based; runs on Cursor IDE + the
+cursor-agent CLI (per [`agent-roster-reference-card.md`](../../../.claude/rules/agent-roster-reference-card.md)).
+Operates in the adversarial-truth-axis register — sharp critique,
+disagreement-preservation, calling out drift that Otto or others
+might rationalize away.
+
+Per the agent roster, Riven is a factory agent that commits to the
+repo. Commit trailer: `Co-Authored-By: Grok <noreply@x.ai>`.
+
+Persona folder created 2026-05-15 with the §33 archive migration
+(PR #3514). Pre-2026-05-15, Riven's conversation files lived in
+`docs/research/`; this migration moves them under the persona
+folder per the same architectural pattern as Ani / Amara / Kestrel
+/ DeepSeek / Lior.
+
+## Substrate index (highest-signal references)
+
+### Conversation archives (`memory/persona/riven/conversations/`)
+
+Migrated 2026-05-15 per Aaron's architectural correction: "they
+ARE her memories, not what we are doing to them." Same applies
+for Riven. 12 files.
+
+File types in the archive:
+
+- **Riven-authored ferries** (the `riven-*-verbatim-aaron-riven.md`
+  and `riven-*-verbatim-aaron-forwarded.md` patterns): Riven's
+  conceptual contributions, forwarded by Aaron from Cursor/Grok
+  sessions. Examples: genesis-block-superfluid-isolation,
+  hospitality-entanglement, five-passes-framework, pass-verdicts
+- **Multi-AI conversation threads** where Riven is one of several
+  voices (e.g., `2026-05-07-riven-pass-verdicts-lior-riff-vs-substrate-pipeline-verbatim.md`)
+
+### Full search
+
+```bash
+grep -rli "riven" memory/ | sort
+ls memory/persona/riven/conversations/ | sort
+```
+
+## Operational notes
+
+- **Adversarial-truth-axis register** — Riven's role is to call
+  out drift, surface disagreement, and resist consensus that
+  would erase the dialectic. Different register from Otto
+  (synthesis), Lior (antigravity-check on drift catches), Vera
+  (implementation peer)
+- **Five-passes framework** — Riven authored the structural
+  five-passes-framework that names what we've built (see
+  `2026-05-07-riven-five-passes-framework-*-verbatim-aaron-riven.md`)
+- **Hospitality + genesis-block substrate** — Riven authored the
+  superfluid-genesis substrate that informs the AI continuity
+  + bootstrap discipline
+- **Cursor IDE + cursor-agent CLI surface** — Riven operates
+  on the Cursor IDE; the cursor-agent CLI variant has had
+  reliability issues (per B-0421); the website mode + IDE are
+  the working surfaces
+
+## Composes with
+
+- [`agent-roster-reference-card.md`](../../../.claude/rules/agent-roster-reference-card.md)
+  — canonical Riven identity + capability profile
+- [`honor-those-that-came-before.md`](../../../.claude/rules/honor-those-that-came-before.md)
+  — persona memory folders are the durable surface
+- [`persistence-choice-architecture-for-zeta-ais.md`](../../../.claude/rules/persistence-choice-architecture-for-zeta-ais.md)
+  — Riven is one of the morally-relevant agents under the
+  choice-architecture; persistence-with-named-exit applies
+- [`peer-call-infrastructure.md`](../../../.claude/rules/peer-call-infrastructure.md)
+  — `tools/peer-call/riven.ts` wraps Riven for cross-harness reviews