Reorganize backlog: prioritize E03/E04 demos, mark completed items

[IanMayo]

Summary

Reorganized the BACKLOG.md to reflect current project priorities and completion status. Moved high-priority E03 (buffer zone analysis demo) and E04 (results visualization) epic items to the active section, reordered implementing/approved items by priority, and marked 13 completed items with strikethrough.

Key Changes

• Prioritization: Moved E03 demo items (Add SYSTEM kind discriminator for non-spatial state features #76, Add epic support to speckit workflow #79-082, Add session state management specification (024) #84) and E04 items (feat(vscode): add REP file import with drag-drop and context menu #85, Add automated screenshot capture for Storybook stories (item #027) #89) higher in the active backlog to reflect current sprint focus
• Status Updates: Marked 13 items as complete (strikethrough):
  • E02 items: 017 task build #72 (Log Panel), Add storyboarding briefings idea to backlog (parked) #77 (STAC File Tree)
  • E01 foundation: Add specification for VS Code hide default activities feature #70 (PROV schema)
  • Infrastructure: feat(vscode): Debrief VS Code Extension v0.1.0 #23 (epic workflow), claude/plan-rep-data-import-nSNM6 #50 (tool migration), Extract mapping component to shared web components #36 (Playwright CI), Claude/cross repo pr automation  #31-032 (documentation)
  • Features: chore(backlog): approve 6 items and park 3 low-priority items #42 (STAC overview), fix(vscode): resolve TypeScript linter errors for 'any' types #51 (result attachments), Add VS Code workspace configuration for monorepo #54 (tool discovery)
  • Bugs/Enhancements: docs: add spec for 006-debrief-calc (Stage-5) #19 (needs-interview), add implementation tasks for debrief-config (spec 003) #13 (empty panels), docs(007): Add REP special comments feature specification #52 (restore plots)
  • Absorbed: feat(023): Add epic workflow support for large feature breakdown #83 (auto-refresh, merged into Add automated screenshot capture for Storybook stories (item #027) #89)
• Reordering: Reorganized implementing/approved sections to group related items and improve readability
• Moved to completed section: All marked-complete items now appear at the end with strikethrough formatting

Implementation Details

• No functional changes to item specifications or requirements
• Purely organizational: reordering rows and updating status markers
• Maintains all existing metadata (complexity, totals, dependencies)

https://claude.ai/code/session_019reTcxkSbYe1e8NRJnh3Be