Corpus Write-Back Confirm

Global settings:

corpus:
  enabled: true
  path: /Users/example/KnowledgeVault
  reference_enabled: true
  writeback_enabled: true
  writeback_modes:
    - append_only_notes
    - summaries

Project request:

• write a generated summary into the corpus

Expected ORCA behavior:

• allow the action only because write-back is explicitly enabled
• keep the write inside allowed modes
• prefer a generated summary note rather than overwriting a hand-maintained source note
• ask before any higher-impact overwrite or restructure action