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Tabish Bidiwale a5c10ed5e7 feat: add /opsx:sync command for syncing delta specs to main specs (#450)
* feat: add /opsx:sync command for syncing delta specs to main specs

Add a new agent-driven skill that syncs delta specs from a change to main specs
without requiring archiving. This enables:

- Updating main specs during active development
- Intelligent merging (partial updates, adding scenarios)
- Idempotent operation (safe to run multiple times)

Implementation:
- Extract shared specs-apply logic from archive.ts to specs-apply.ts
- Add getSyncSpecsSkillTemplate and getOpsxSyncCommandTemplate
- Register /opsx:sync in artifact-experimental-setup
- Add specs-sync-skill main spec

* fix: rename specs apply to specs sync throughout change artifacts

Update all references:
- /opsx:specs → /opsx:sync
- specs-apply-skill → specs-sync-skill
- Remove cli-artifact-workflow delta spec (no CLI command)
- Update proposal, design, and tasks docs
2026-01-06 16:32:22 -08:00

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Markdown

## Tasks
### Core Implementation
- [x] Extract spec application logic from `ArchiveCommand` into `src/core/specs-apply.ts`
- Move `buildUpdatedSpec()`, `findSpecUpdates()`, `writeUpdatedSpec()` to shared module
- Keep `ArchiveCommand` importing from the new module
- Ensure all validation logic is preserved
### Skill Template
- [x] Add `getSyncSpecsSkillTemplate()` function in `src/core/templates/skill-templates.ts`
- Skill name: `openspec-sync-specs`
- Description: Sync delta specs to main specs
- **Agent-driven**: Instructions for agent to read deltas and edit main specs directly
- [x] Add `/opsx:sync` slash command template in `skill-templates.ts`
- Mirror the skill template for slash command format
- **Agent-driven**: No CLI command, agent does the merge
### Registration
- [x] Register skill in managed skills (via `artifact-experimental-setup`)
- Add to skill list with appropriate metadata
- Ensure it appears in setup output
### Design Decision
**Why agent-driven instead of CLI-driven?**
The programmatic merge operates at requirement-level granularity:
- MODIFIED requires copying ALL scenarios, not just the changed ones
- If agent forgets a scenario, it gets deleted
- Delta specs become bloated with copied content
Agent-driven approach:
- Agent can apply partial updates (add a scenario without copying others)
- Delta represents *intent*, not wholesale replacement
- More flexible and natural editing workflow
- Archive still uses programmatic merge (for finalized changes)