Refactor workspace structure and documentation

- Deleted obsolete files: obsidian-vault.md, onboarding.md, workspace-model.md
- Updated opencode.json to remove references to deleted files.
- Revised profile.md to clarify the status of legacy paths and communication evidence.
- Adjusted prompts to reflect new file paths and improve clarity.
- Enhanced daily logs with focus, work-items, and blockers properties.
- Updated work-item notes to include systems, workstreams, people, and related properties.
- Improved context maintenance guidelines to ensure accurate and durable project knowledge.
- Refined base filters to exclude template files and ensure only relevant notes are displayed.
- Updated daily templates to ensure proper formatting and consistency.
- Modified workflows to align with the new vault structure and improve context synchronization.

vault/03-context/process/context-maintenance.md

@@ -19,6 +19,11 @@ Keep this workspace useful as living memory instead of a pile of disconnected no
 
 - Update canonical context when a durable fact changes.
 - Prefer correcting stale context over appending contradictory notes.
+- If a canonical note appears in an Obsidian Base, update its frontmatter properties together with the prose content.
+- Keep templates under `vault/09-templates/` out of real-note Bases by filtering the template folder.
+- Role mapping files should not use `type: person`; reserve `type: person` for actual people profiles.
+- Work-item notes should keep known `systems`, `workstreams`, `people`, and `related` properties current.
+- Daily notes should keep `focus`, `work-items`, and `blockers` properties current when the values are clear.
 - Use the smallest correct destination:
   - `vault/06-daily/YYYY-MM-DD.md` for daily progress and evolving findings
   - `vault/01-current/current-work.md` for near-term active work