docs: align CDP config examples with actual API in typescript/agentkit README

[memosr]

Summary

Three related corrections to typescript/agentkit/README.md, all stemming from documentation that drifted from the actual TypeScript API. Each one would cause real authentication or import failures for a developer following the README.

Changes

1. Default provider name — CdpWalletProvider → CdpSmartWalletProvider

Lines 84 and 95. The README claims the default wallet provider is CdpWalletProvider, but typescript/agentkit/src/agentkit.ts:57 actually defaults to CdpSmartWalletProvider.

The two lines also disagreed with each other — line 84 said WalletProvider, line 95 said WalletActionProvider. Unified both to match the implementation:

- the agent will use the `CdpWalletProvider` and `WalletProvider` action provider
+ the agent will use the `CdpSmartWalletProvider` and `WalletActionProvider`

2. Wrong config field name — apiKeyPrivate → apiKeySecret

Lines 111, 130, and ~1358. Three separate code examples for CdpWalletProvider.configureWithWallet() use apiKeyPrivate:

await CdpWalletProvider.configureWithWallet({
  apiKeyId: "CDP API KEY NAME",
  apiKeyPrivate: "CDP API KEY SECRET",  // ← not in CdpProviderConfig
});

But the actual interface at typescript/agentkit/src/wallet-providers/cdp/cdpShared.ts:13 defines the field as apiKeySecret. TypeScript will silently drop the unrecognized field, so following these examples produces a working type-check but a failing runtime authentication call.

Fixed all three occurrences:

- apiKeyPrivate: "CDP API KEY SECRET",
+ apiKeySecret: "CDP API KEY SECRET",

3. Disambiguate adjacent code blocks with conflicting parameter names

Lines 86 and 107. Two code blocks sit right next to each other but use entirely different parameter naming conventions:

• AgentKit.from() shortcut → cdpApiKeyId / cdpApiKeySecret
• CdpWalletProvider.configureWithWallet() → apiKeyId / apiKeySecret

This is almost certainly the root cause of how the apiKeyPrivate typo propagated to three separate locations in fix #2 — readers copy-paste from the wrong block.

Added a one-line clarifying comment to each block:

+ // When using the AgentKit.from() shortcut:
  const agentKit = AgentKit.from({ ... });

+ // When constructing a wallet provider manually:
  await CdpWalletProvider.configureWithWallet({ ... });

Verification

• ✅ Only typescript/agentkit/README.md modified
• ✅ Verified CdpSmartWalletProvider against agentkit.ts:57
• ✅ Verified apiKeySecret against cdpShared.ts:13
• ✅ No code changes — doc-only

[cb-heimdall]

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