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

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+---
+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.

src/decisions/DECISIONS_2026-02-22T23-03-37Z.md

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+---
+agent: load-test-agent
+cadence: daily
+run-start: 2026-02-22T23:03:37Z
+---
+
+# Decisions
+
+Executed prompt: src/prompts/daily/load-test-agent.md
+
+## Decision
+Use a local ephemeral WebSocket server as the relay target.
+
+## Rationale
+To ensure safety and avoid hitting public relays, as strictly required by the `load-test-agent` prompt and `AGENTS.md`. A local relay provides a controlled environment for measuring baseline harness performance.

src/test_logs/TEST_LOG_2026-02-22T23-03-37Z.md

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+---
+agent: load-test-agent
+cadence: daily
+run-start: 2026-02-22T23:03:37Z
+---
+
+# Test Log
+
+Executed prompt: src/prompts/daily/load-test-agent.md
+
+- Command: `node scripts/agent/load-test.mjs --relay-url "ws://127.0.0.1:42049" --clients 10 --duration-sec 10 --allow-dedicated-test-relay 1 --relay-safety-ack LOAD_TEST_INFRA_CONFIRMED --dry-run 0`
+- Result: Success. Throughput: 19.93 events/sec. Success rate: 100%. No errors. See `reports/load-test/load-test-report-2026-02-22.md` for details.

src/todo/TODO_2026-02-22T23-03-37Z.md

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+---
+agent: load-test-agent
+cadence: daily
+run-start: 2026-02-22T23:03:37Z
+---
+
+# Todo
+
+Executed prompt: src/prompts/daily/load-test-agent.md
+
+## Completed Tasks
+- [x] Run load test against local relay