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/08-bases/daily.base

@@ -1,6 +1,8 @@
 filters:
   and:
-    - 'type == "daily"'
+    - type == "daily"
+    - file.ext == "md"
+    - '!file.inFolder("09-templates")'
 properties:
   date:
     displayName: Date
@@ -19,4 +21,3 @@ views:
       - focus
       - work-items
       - blockers
-