Fix ICP client wiring and missing deployment exports

[johnnyclem]

Motivation

• createICPClient previously required an HttpAgent while callers passed only a config, causing invalid client construction and broken deployment flow.
• validateWasmPath and calculateWasmHash were referenced as standalone imports but only existed as instance methods, preventing reuse by the deployer.
• generateStubCanisterId was exported from the barrel but not implemented, making the deployment index export incorrect.

Description

• Updated ICPClient to accept only an ICPClientConfig and changed createICPClient to createICPClient(config) to align construction across call sites (file: src/deployment/icpClient.ts).
• Added and exported standalone helpers validateWasmPath, calculateWasmHash, and generateStubCanisterId, and refactored the instance methods validateWasmPath and calculateWasmHash to delegate to these helpers (file: src/deployment/icpClient.ts).
• Restored consistency between the deployment barrel and implementation so imports used by deployAgent and getCanisterStatus are valid (affects src/deployment/deployer.ts and src/deployment/index.ts).

Testing

• No automated tests were run on this change.

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Codex Task

[vercel]

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Project	Deployment	Actions	Updated (UTC)
agent-vault	Error		Apr 26, 2026 2:33pm
agentvault	Error		Apr 26, 2026 2:33pm

[johnnyclem]

Closing as superseded. This branch was created from a pre-rewrite history (no common ancestor with current main, so the conflict cannot be resolved by merging), and everything it fixes already exists on main:

• ICPClient constructor takes only ICPClientConfig, and createICPClient(config) matches (src/deployment/icpClient.ts)
• generateStubCanisterId is implemented and exported from the deployment barrel
• deployAgent/getCanisterStatus use the client's instance methods, so no standalone validateWasmPath/calculateWasmHash exports are needed

No remaining diff to merge.

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