test(kb): add temporary test file for workflow validation

This is a temporary test file to validate the KB lint workflow.
The file follows all KB rules and should pass validation.
Will be deleted after workflow testing is complete.

kb/01_projects/tendril/2025-11-11--test-kb-workflow--note.md

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+---
+title: "Test KB Workflow Validation"
+date: "2025-11-11"
+captured_at: "2025-11-11"
+author: ["Test User"]
+source: { kind: chat, ref: "test-workflow-validation" }
+source_type: chat
+project: ["tendril"]
+related_projects: ["tendril"]
+topics: ["testing", "workflows", "kb-system"]
+tags: ["test", "workflow", "validation", "temporary"]
+type: note
+status: draft
+phase_relevance: []
+routing_hint: "Test file for workflow validation - will be deleted"
+proposed_path: "kb/01_projects/tendril/"
+routing_confidence: 0.95
+related: []
+summary: "Temporary test file to validate KB lint workflow. This file will be deleted after testing."
+key_takeaways: []
+action_candidates: []
+---
+
+# Test KB Workflow Validation
+
+This is a temporary test file created to validate that the KB lint workflow (`kb-lint.yml`) is working correctly.
+
+## Purpose
+
+- Test KB file naming validation
+- Test frontmatter validation
+- Test workflow triggers on push/pull request
+- Verify workflow provides clear error messages
+
+## Expected Behavior
+
+When this file is committed and pushed:
+1. KB lint workflow should trigger (because `kb/**/*.md` changed)
+2. Workflow should validate the file
+3. Workflow should pass (file follows all rules)
+4. After testing, this file will be deleted
+
+## File Details
+
+- **Filename**: `2025-11-11--test-kb-workflow--note.md`
+- **Type**: note
+- **Date**: 2025-11-11
+- **Location**: `kb/01_projects/tendril/`
+- **Routing Confidence**: 0.95 (high confidence, not in review queue)
+
+## Validation Rules Tested
+
+✅ Filename pattern: `YYYY-MM-DD--slug--type.md`  
+✅ Frontmatter exists and is valid YAML  
+✅ All 18 required fields present  
+✅ Date in frontmatter matches filename date  
+✅ Type in frontmatter matches filename type  
+✅ routing_confidence is numeric 0.00-1.00  
+✅ routing_confidence >= 0.60 (not in _review_queue/)
+
+---
+
+**Note**: This file will be deleted after workflow validation is confirmed.
+