fix(core): define RunEvent schema and update ApiClient validation #5040

Job	Run time
e2e / 🧪 CLI v3 tests (windows-latest - pnpm)	3m 47s
sdk-compat / Bun Runtime	2m 9s
sdk-compat / Deno Runtime	2m 4s
sdk-compat / Cloudflare Workers	2m 17s
e2e / 🧪 CLI v3 tests (windows-latest - npm)	3m 50s
e2e / 🧪 CLI v3 tests (ubuntu-latest - npm)	1m 49s
e2e / 🧪 CLI v3 tests (ubuntu-latest - pnpm)	1m 46s
sdk-compat / Node.js 20.20 (ubuntu-latest)	2m 9s
typecheck / typecheck	5m 55s
sdk-compat / Node.js 22.12 (ubuntu-latest)	2m 2s
units / packages / 🧪 Unit Tests: Packages (1, 1)	8m 35s
units / internal / 🧪 Unit Tests: Internal (3, 8)	8m 18s
units / internal / 🧪 Unit Tests: Internal (6, 8)	5m 57s
units / internal / 🧪 Unit Tests: Internal (8, 8)	2m 13s
units / internal / 🧪 Unit Tests: Internal (7, 8)	5m 16s
units / internal / 🧪 Unit Tests: Internal (4, 8)	6m 22s
units / internal / 🧪 Unit Tests: Internal (2, 8)	12m 38s
units / internal / 🧪 Unit Tests: Internal (5, 8)	6m 0s
units / webapp / 🧪 Unit Tests: Webapp (6, 8)	2m 12s
units / webapp / 🧪 Unit Tests: Webapp (2, 8)	3m 56s
units / internal / 🧪 Unit Tests: Internal (1, 8)	7m 3s
units / webapp / 🧪 Unit Tests: Webapp (4, 8)	3m 40s
units / webapp / 🧪 Unit Tests: Webapp (5, 8)	7m 55s
units / webapp / 🧪 Unit Tests: Webapp (1, 8)	6m 6s
units / webapp / 🧪 Unit Tests: Webapp (7, 8)	5m 56s
units / webapp / 🧪 Unit Tests: Webapp (3, 8)	6m 30s
units / webapp / 🧪 Unit Tests: Webapp (8, 8)	2m 5s
units / webapp / 📊 Merge Reports	39s
units / packages / 📊 Merge Reports	32s
units / internal / 📊 Merge Reports	22s
	2h 10m 3s

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