[DOCS] integration-guide.md requestSessionKey example doesn't match the real SessionKeyPolicy type

[wheval]

Summary

The requestSessionKey example in the Quick Start guide uses field names that don't exist on the real SessionKeyPolicy type.

Evidence

Doc example passes { allowlist, methods, maxAmount, durationSeconds }. Real type (packages/types/src/session-key-policy.ts) is { expiresAt: number, permissions: number, allowedContracts?: string[], maxAmountPerCall?: string } — none of the field names match, and durationSeconds doesn't exist at all (needs an absolute expiresAt timestamp instead).

Why it matters

Same Quick Start flow; this example would fail type-checking or silently no-op every field if copy-pasted as JS.

Suggested fix

Rewrite the code block to use the real field names from SessionKeyPolicy.

[odiliflash-ops]

I would love to work on this issue