feat: Refactor work item management and documentation for clarity and structure

.opencode/commands/sync-context.md

@@ -15,6 +15,7 @@ Read:
 @ai/context/process/context-maintenance.md
 @ai/context/people/manager.md
 @ai/context/people/index.md
+@ai/work-items/index.md
 @ai/state/current.md
 @ai/state/work-items.md
 @knowledge/workspace-model.md
@@ -35,6 +36,7 @@ Instructions:
 - Decide whether the new information belongs in:
   - today's log
   - `ai/state/current.md`
+  - `ai/work-items/*.md`
   - `ai/state/work-items.md`
   - `ai/context/project.md`
   - `ai/context/systems/`