docs: add assisted exit transfer and history design documents

docs/superpowers/plans/2026-08-20-assisted-exit-transfer-history-docs.md

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+# Assisted Exit Transfer and History Documentation Plan
+
+**Status:** Documentation update only. No application or schema implementation is authorized by this record.  
+**Date:** 20 August 2026
+
+## Deliverables
+
+1. Amend the existing `AUTH`, `PRJ`, `TSK`, `ATT`, `CAL`, `INT`, `UI`, and `DB` rows without adding requirement IDs.
+2. Synchronize the explained and very-simple teaching copies.
+3. Update `UC-04`, `UC-05`, `UC-06`, and `UC-14`, required workflow pages, and regenerate the SRS from its generator.
+4. Update `PRODUCT.md`, `.agents/PROJECT_PLAN.md`, `AGENTS.md`, and `README.md` with the locked boundary and Iteration 2 ownership.
+5. Add the append-only requirements update manifest.
+6. Preserve both DDL files, both Mermaid structures, all mockup/reference assets, and `.DS_Store` byte-for-byte.
+
+## Validation gates
+
+- Exactly 260 unique requirement rows in authoritative, explained, simple, and generated SRS catalogues.
+- Exactly 14 SRS use cases.
+- Exactly 23 documented tables and 56 named foreign-key relationships; no DDL byte change.
+- Generated SRS agrees with the canonical requirement rows and updated use cases/workflow pages.
+- All local Markdown links resolve.
+- Protected DDL/mockup/reference hashes and `.DS_Store` hash match the pre-update snapshot.
+- `git diff --check` passes.
+
+## Non-goals
+
+No Java, Flyway, SQL, Mermaid structure, mockup, frontend asset, branch, commit, push, or deployment change is part of this task.