feat(workflow): process inbox files and move to categorized processed folders

Runs file-processor skill on 5 inbox files: moves and renames to
processed/receipts, processed/invoices, processed/documents, and
processed/images using ISO date naming convention. Generates
outputs/processing-log-2026-03-09.md. Inbox is now empty.

cowork-complete-guide/outputs/processing-log-2026-03-09.md

@@ -0,0 +1,25 @@
+# Processing Log – March 9, 2026
+
+Skill used: `skills/file-processor.md`
+Files processed: 5
+Files skipped: 0 (README.md left in place)
+
+---
+
+## Files Moved
+
+| Original Name | New Name | Destination |
+|---|---|---|
+| amazon_receipt_march.txt | 2026-03-07-amazon-receipt.txt | processed/receipts/ |
+| invoice_webdesign.txt | 2026-03-01-pixel-co-web-design-invoice.txt | processed/invoices/ |
+| meeting_notes_product_sync.txt | 2026-03-06-product-sync-meeting-notes.txt | processed/documents/ |
+| screenshot_app_bug.txt | 2026-03-08-dashboard-notification-bug-screenshot.txt | processed/images/ |
+| contract_freelance_draft.txt | 2026-03-01-freelance-service-agreement-draft.txt | processed/documents/ |
+
+---
+
+## Notes
+
+- Dates in filenames taken from file content where available
+- Contract marked as DRAFT – not yet signed
+- No files were deleted