fix: resolve Azure Function 403 caused by IP rotation (#90)

refactor: update constitution and scripts for improved branch management and agent context

fix: skip Issue creation if closed Issues exist (re-run to finalize spec)

fix: add idempotency_key to Issue description for duplicate detection

fix: use --force-with-lease for push to handle existing branches

fix: exclude template files from 'Copilot wrote directly' check

fix: check if Copilot wrote spec directly to SPEC_FILE before extraction

fix: match any markdown header level when extracting spec from Copilot output

fix: use dynamic WEF_*_Kanban.Column.Done field instead of ReadOnly System.BoardColumnDone

feat: conditionally set Blocked or Done based on open Issues

feat: set work item state to Blocked when reassigning to user

fix: clean untracked files before checkout to prevent conflicts

feat: reuse existing branch for work item instead of creating new one

fix: exclude checklists/ from spec.md search to prevent copying checklist instead of spec

fix: improve comments API handling and add validation