ci(workflows): tune agentic workflow schedules

[Copilot]

Summary

Tune agentic workflow schedules to match observed workload instead of current cadence. This cuts down no-op churn from workflows that are repeatedly blocked on open PRs/issues or consistently finding no actionable work.

• Reduce frequency for low-yield maintenance workflows

  • docs-writer: every 4 hours → daily
  • doc-freshness-check: every 4 hours → daily
  • clippy-fixer: every 4h → daily
  • bash-lint-auditor: daily → weekly on monday around 09:00
  • cyclomatic-complexity-reducer: daily → weekly on tuesday
  • test-gap-finder: daily on weekdays → weekly on wednesday
  • test-reducer: every 12h → weekly on thursday

• Slow dependency churn slightly

  • update-awf-version: daily → every 2 days

• Leave backlog-aware / higher-signal workflows unchanged

  • frontmatter-aligner
  • red-team-security

• Regenerate compiled workflow outputs

  • Recompiled the affected .lock.yml files with gh aw so the checked-in generated workflows stay aligned with the updated front matter.

# before
on:
  schedule: every 4 hours

# after
on:
  schedule: daily

Test plan

• cargo build
• cargo test
• cargo clippy --all-targets --all-features
• parallel_validation (Code Review + CodeQL)