ci: add benchmark workflow

[Arvuno]

Summary

Adds benchmark workflow to CI.

Testing

CI passes.

---

Summary by cubic

Adds a benchmark CI workflow that builds the project and runs a lightweight TS benchmark on pushes and PRs to main. Reports total time, average per iteration, and ops/sec to help catch performance regressions early.

^{Written for commit 13213a8. Summary will update on new commits. Review in cubic}

[cubic-dev-ai]

1 issue found across 2 files

Prompt for AI agents (unresolved issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="node/bench.ts">

<violation number="1" location="node/bench.ts:12">
P2: Benchmark loop body assigns object properties to unused local variables, which allows JavaScript engines to eliminate the reads via dead code elimination, producing misleading timing metrics.</violation>
</file>

<sub>Reply with feedback, questions, or to request a fix.

Fix all with cubic | Re-trigger cubic</sub>

[cubic-dev-ai]

P2: Benchmark loop body assigns object properties to unused local variables, which allows JavaScript engines to eliminate the reads via dead code elimination, producing misleading timing metrics.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At node/bench.ts, line 12:

<comment>Benchmark loop body assigns object properties to unused local variables, which allows JavaScript engines to eliminate the reads via dead code elimination, producing misleading timing metrics.</comment>

<file context>
@@ -0,0 +1,26 @@
+const testObj = { name: 'test', description: 'test desc', schema: {} }
+
+const start = performance.now()
+for (let i = 0; i < iterations; i++) {
+    for (let j = 0; j < 20; j++) { // Simulate ~20 tools
+        const _name = testObj.name
</file context>