feat(scheduler): execute load-test-agent daily run

- Implement `scripts/agent/simple-relay.mjs` for local load testing
- Execute `load-test-agent` prompt via scheduler flow
- Generate load test reports and run artifacts
- Complete daily task for `load-test-agent`

Co-authored-by: PR0M3TH3AN <[email protected]>

src/context/CONTEXT_2026-02-22T23-03-37Z.md

@@ -0,0 +1,22 @@
+---
+agent: load-test-agent
+cadence: daily
+run-start: 2026-02-22T23:03:37Z
+---
+
+# Context
+
+Executed prompt: src/prompts/daily/load-test-agent.md
+
+## Goal
+Execute a safe, reproducible load test against a local relay to measure baseline performance.
+
+## Scope
+- Create a local ephemeral relay for testing.
+- Run the load test harness (`scripts/agent/load-test.mjs`) against the local relay.
+- Generate a performance report.
+
+## Constraints
+- Must not target public relays.
+- Must use `load-test-agent` prompt instructions.
+- Must not introduce new dependencies if possible.