docs(plan): record peer-auth decisions and evidence

Record the completed protocol-8 implementation, its security and lifecycle
decisions, and the final local acceptance evidence. Mark protocol-7 Call to
Play relay reviews as historical so they cannot be mistaken for current design.

Keep production acceptance honest by recording the unavailable canonical
186-game manifest corpus, real Windows/NTFS confinement and durability proof,
and representative physical-LAN evidence as external release prerequisites.

Test Plan:
- `just fmt` (passed)
- `just test` (passed; 708 workspace tests, including peer 480 and Tauri 56)
- `just clippy` (passed)
- `just frontend-test` (passed; 91/91)
- `just build` (passed; fixture-backed no-bundle build)
- `LANSPREAD_S37_MIN_MIB_PER_S=100 just peer-cli-tests` (passed; S1-S49)
- `git diff --cached --check` (passed)

organize/unsorted/FABLE_5_FINDINGS.md

@@ -1,5 +1,11 @@
 # Fable 5 findings
 
+> **Historical / superseded:** These findings assess the removed protocol-v7
+> shared-certificate, client-authored, relayed event model. The current protocol
+> authenticates typed peer identities, accepts local intents, generates event
+> authority in the core, and pulls author-owned snapshots directly. Retain this
+> document only as historical review context, not a current issue list.
+
 Review of the issues Fable found after the Call to Play follow-up fixes. This
 document records the assessment only; it is not an implementation plan.