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/.obsidian/graph.json

@@ -1,7 +1,7 @@
 {
   "collapse-filter": true,
-  "search": "-path:generated -path:.venv -file:index -file:README -file:AGENTS -file:SKILL",
-  "showTags": true,
+  "search": "-path:generated -path:.venv -path:08-bases -path:09-templates -file:index -file:README -file:AGENTS -file:SKILL",
+  "showTags": false,
   "showAttachments": false,
   "hideUnresolved": false,
   "showOrphans": false,
@@ -60,6 +60,6 @@
   "repelStrength": 10,
   "linkStrength": 1,
   "linkDistance": 250,
-  "scale": 2.0503081104007936,
+  "scale": 1.0087453683557874,
   "close": true
 }