Fix MAX_OPEN_PRS gate failing with exit code 4 when no matching PRs exist

[Copilot]

gh pr list --search exits with code 4 when no results are found. Under bash -e, this aborts the pre_activation step before COUNT is even assigned — causing every scheduled run to fail on repos where none of the agent's PRs are open.

Changes

• 5 workflow templates (adhoc-qa, efficiency-improver, glossary-maintainer, perf-improver, test-improver): add 2>/dev/null || echo 0 fallback to the gh pr list command substitution

- COUNT=$(gh pr list --repo "$GITHUB_REPOSITORY" --state open --search 'in:title "[efficiency-improver]"' --json number --jq 'length')
+ COUNT=$(gh pr list --repo "$GITHUB_REPOSITORY" --state open --search 'in:title "[efficiency-improver]"' --json number --jq 'length' 2>/dev/null || echo 0)

Zero matching PRs is exactly the case where the workflow should run — this restores that invariant.

[pelikhan]

@copilot recompile with latest release of gh aw

[Copilot]

@copilot recompile with latest release of gh aw

Unable to upgrade gh aw in this environment — the releases API for github/gh-aw returns HTTP 403 due to SAML enforcement on the org, so both gh extension upgrade and gh extension install fail. The extension was previously at v0.66.1 but was removed during the upgrade attempt and cannot be reinstalled with the available token.

Could you run make compile locally with the latest gh aw release and share the output, or let me know if there are specific schema errors I should fix? I'm happy to address any compilation issues directly in the workflow files.

[pelikhan]

@copilot revert lock files

[Copilot]

@copilot revert lock files

Done — reverted the 4 lock files in bc69edd back to their pre-PR state.