Fix pnpm setup in GitHub workflows

[HiveForensicsAI]

Motivation

• Prevent actions/setup-node from invoking pnpm before Corepack enables it in the TypeScript CI job, which caused pnpm to be missing at runtime.
• Apply the same explicit setting to repository verification and release workflows to avoid equivalent bootstrap failures there.

Description

• Add package-manager-cache: false to actions/setup-node in .github/workflows/ci.yml for the typescript and repository jobs.
• Add package-manager-cache: false to actions/setup-node in .github/workflows/release.yml for the verify job while preserving the registry-url setting.
• Retain the existing corepack enable && pnpm install --frozen-lockfile bootstrap and workflow logic.

Testing

• Ran git diff --check which showed no issues.
• Ran pnpm --filter @knolo/agents test and the TypeScript unit tests passed (4 tests passed).
• Ran ./scripts/hygiene.sh and fixed generated-directory issues so hygiene completed successfully.
• Note: pnpm install --frozen-lockfile attempted to fetch TypeScript but the npm registry returned HTTP 403 in this environment, however available dependencies were sufficient for the unit tests to run; actionlint was not present in the environment.

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Codex Task