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/00-start/workspace-architecture.md

@@ -50,8 +50,8 @@ Runtime and generated files can be used as evidence, but durable project facts s
 
 ---
 
-## Migration Rule
+## Memory Rule
 
-Legacy `ai/context`, `ai/state`, `ai/work-items`, `ai/logs`, and `knowledge` files may still exist for compatibility.
+Promoted memory lives in `vault/`.
 
-When a `vault/` equivalent exists, update `vault/` first.
+Raw inbox and generated connector evidence stays outside the vault until the agent promotes durable facts.