chore: use the asset canister cookie to lookup the root key

[raymondk]

No description provided.

[Copilot]

Pull request overview

This PR updates the hello-world frontend templates to source both canister IDs and the replica root key from the ic_env cookie served by the asset canister (and injected by the Vite dev server), so the actor is configured using cookie-derived configuration rather than environment-conditional root key fetching.

Changes:

• Switch frontends to use getCanisterEnv(...) for canister ID lookup and root key retrieval from the asset-canister cookie.
• Update actor creation to always set agentOptions.rootKey from canisterEnv.IC_ROOT_KEY.
• Add inline documentation explaining the PUBLIC_CANISTER_ID:<canister-name> convention and the cookie behavior.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 7 comments.

File	Description
hello-world/vue-frontend/src/App.vue	Moves env/root key lookup to getCanisterEnv, but currently introduces compile/runtime issues (TS syntax in non-TS SFC, missing import, actor name mismatch).
hello-world/react-frontend/src/App.tsx	Uses getCanisterEnv and always sets rootKey from cookie; comment wording updates needed.

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.