fix(ci): avoid ARC pnpm cache conflicts and bump sdk

[willgriffin]

Summary

• skip actions/cache for pnpm when ARC already provides a mounted PNPM_STORE_DIR
• keep pnpm pointed at the mounted store so ARC runners still share the same location
• bump the aligned @happyvertical/* SDK packages from 0.71.18 to 0.71.19 and refresh pnpm-lock.yaml

Why

Recent CI failures on March 26, 2026 showed ERR_PNPM_ENOENT during install after restoring the pnpm cache into the same store path already mounted on ARC runners. This change avoids restoring a tarball into that mounted store while preserving the normal cache flow for non-ARC environments.

Validation

• bash scripts/check-sdk-versions.sh
• pnpm install --lockfile-only
• pnpm install --frozen-lockfile
• pnpm run build
• pnpm --filter @happyvertical/smrt-core test:integration

Note

• pnpm run typecheck still reports an existing unrelated @happyvertical/smrt-profiles resolution issue in packages/users on current main.

[Copilot]

Pull request overview

This PR updates CI setup to avoid pnpm store corruption on ARC/self-hosted runners by skipping actions/cache when a mounted PNPM_STORE_DIR is present, while also bumping the aligned @happyvertical/* SDK dependencies from 0.71.18 to 0.71.19 (and refreshing the lockfile accordingly).

Changes:

• Add ARC-aware pnpm store detection to the setup-environment composite action and conditionally disable actions/cache restore.
• Bump aligned @happyvertical/* dependencies to ^0.71.19 across workspace/package definitions.
• Refresh pnpm-lock.yaml to reflect the version bump and resulting dependency graph changes.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated no comments.

File	Description
.github/actions/setup-environment/action.yml	Adds pnpm store strategy detection (mounted store vs local) and gates actions/cache usage to prevent ARC store conflicts.
package.json	Bumps aligned @happyvertical/* dependency versions to ^0.71.19.
pnpm-workspace.yaml	Updates the workspace catalog entries for aligned @happyvertical/* versions to ^0.71.19.
pnpm-lock.yaml	Regenerates lockfile to incorporate the SDK bump and related dependency updates.

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

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