diff --git a/CHECKPOINT-encryption.md b/CHECKPOINT-encryption.md
index c42a2a7..0407a61 100644
--- a/CHECKPOINT-encryption.md
+++ b/CHECKPOINT-encryption.md
@@ -1,4 +1,87 @@
-# Checkpoint — Updates card (2026-08-24)
+# Checkpoint — Security dependency upgrades (2026-08-24)
+
+A stopping point you can return to if this session is closed. Everything below was
+verified green at the moment this file was written.
+
+## Where things are
+
+- Project: `/home/avi/Projects/Nostr_Keynctr`
+- Git repo: `master` @ `c11ab9f` ("Security: major dependency upgrades clearing
+  all npm advisories; show per-advisory fix paths"). Before it: `8bce428`
+  (updates card), `a1915bb` (checkpoint), `55a49b4` (feed filter), `b001b3c`
+  (publish latency).
+- Working tree is **clean** apart from this checkpoint update, which is committed right after.
+
+## What was completed
+
+1. **All npm security advisories cleared (2026-08-24, `c11ab9f`).** The user
+   ran *Install updates*, but 20 advisories remained — `npm audit fix` only
+   applies semver-compatible fixes, and npm's own `fixAvailable` data showed
+   every remaining issue needed one of four **major** upgrades. All applied and
+   verified:
+   - `vite` ^5.4 → **^8.2.2** (fixes vite path traversal, esbuild dev-server)
+   - `vitest` ^2.1 → **^4.1.11** (fixes critical vitest/@vitest/mocker/vite-node)
+   - `electron` ^33.2 → **^43.4.1** (fixes ~30 runtime CVEs incl. ASAR bypass)
+   - `electron-builder` ^25.1 → **^26.15.3** (fixes critical tar chain,
+     node-gyp/cacache/make-fetch-happen/builder-util cluster)
+   - `npm audit` now reports **0 vulnerabilities**.
+2. **Updates card now explains residual advisories (`c11ab9f`).** Each advisory
+   can show a fix-path hint from npm (e.g. "Needs electron@43.4.1, a major
+   upgrade — not auto-installed."), or "No fix has been published yet." Hints
+   only appear when *Install updates* cannot clear the item by itself.
+3. Full toolchain verified on the new majors: vitest 4, vite 8, plugin-react 6,
+   electron 43 all pass the existing suite with no config changes.
+
+## Commits added most recently
+
+- `c11ab9f` Security: major dependency upgrades clearing all npm advisories; show per-advisory fix paths
+
+## Verification commands run (all green)
+
+Frontend (`frontend/`):
+
+```
+npm audit            # found 0 vulnerabilities
+npm test             # 14 files, 91 tests passed
+npm run typecheck    # clean
+npm run lint         # 0 errors
+npm run format:check # clean
+npm run build        # vite 8 build success
+npm run electron:build  # tsc electron main success
+npx electron --version  # v43.4.1
+```
+
+Rust (repo root):
+
+```
+cargo test            # 113 passed; 0 failed (new fix-path parser test)
+cargo clippy --all-targets   # only pre-existing warnings in src/profiles.rs
+cargo fmt --check     # clean
+cargo build --release # success
+```
+
+## How to use / reproduce
+
+```bash
+cd ~/Projects/Nostr_Keynctr/frontend && npm start
+```
+
+Settings → Updates → Check for updates should show "No known security
+advisories". If new ones appear later, Install handles compatible fixes;
+anything left lists exactly what major upgrade it needs.
+
+## Notes & next steps
+
+- Electron jumped 10 majors (33 → 43): compile-level checks and the renderer
+  test suite pass, but give the app one manual smoke test (launch, unlock,
+  publish, feed) when convenient.
+- The Updates card's Install button remains deliberately conservative: majors
+  are never auto-applied; they are surfaced as explicit hints instead.
+- Relay health (earlier today): damus.io 503, nostr.band WS handshake timing out.
+
+---
+
+# Older checkpoint — Updates card (2026-08-24)
 
 A stopping point you can return to if this session is closed. Everything below was
 verified green at the moment this file was written.