proposal-lock-proposals-dir

Proposal: Lock proposals dir as directory instead of individual files

Replace the 8 individual proposal file entries with a single directory entry vault/90_inbox/proposals/protected. This ensures all existing proposals are locked (status can only be changed by user in Obsidian).

Change

Replace:

  - vault/90_inbox/proposals/protected/applied/proposal-recap-auto-trigger.md
  - vault/90_inbox/proposals/protected/proposal-fr001-test-section-restructure.md
  - vault/90_inbox/proposals/protected/proposal-recap-auto-trigger.md
  - vault/90_inbox/proposals/protected/proposal-review-stage-architecture.md
  - vault/90_inbox/proposals/protected/proposal-review-stage-claude-md.md
  - vault/90_inbox/proposals/protected/proposal-review-stage-glossary.md
  - vault/90_inbox/proposals/protected/proposal-review-stage-protected-files.md
  - vault/90_inbox/proposals/protected/proposal-review-stage-workflow.md

With:

  - vault/90_inbox/proposals/protected