refactor(vault): Phase 3 — metadata convergence

- Backfill `created` frontmatter on 266 active notes (git date or mtime)
- Normalize `status` to 4 values: draft/active/done/archived (11 notes)
  - Active/进行中/needs-review → active
  - archive → archived
  - 待执行/conditional → draft
  - 完成/accepted → done
- Declare clipper boundary: 04_Archive/Inbox-Clippings/** exempt from migration
- Update depth rule: max 3 → max 4 levels (new notes only)
- Add metadata-converge.mjs script for reproducibility

03_Resources/Marketing/Beginners Guide to Product Qualified Leads (PQL).md

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+---
+created: 2026-01-05
+---
 https://productled.com/product-qualified-leads/
 
 A product qualified lead (PQL) is a lead who has experienced meaningful value using your product through a free trial or freemium model.

03_Resources/Marketing/Clusters.md

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+---
+created: 2026-01-05
+---
 Tags: [[Email]] [[Marketing]] - [[Audience]] [[Customer]] [[Local]]
 Author: [[Seth Godin]]
 ## Highlights:

03_Resources/Marketing/Consumers Are Hungry For An Experience-Based Connection With Your Brand.md

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+---
+created: 2026-01-05
+---
 https://www.forbes.com/sites/forbesbusinesscouncil/2019/11/21/consumers-are-hungry-for-an-experience-based-connection-with-your-brand/
 
 According to one study, 83% of consumers admit paying as much attention to how brands treat them as on the product they sell. The same study states that 73% say they are willing to pay more for a product if they love the brand. These statistics call attention to the fact that customer experience is critical.

03_Resources/Marketing/Marketing.md

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+---
+created: 2026-01-05
+---
 ### Notes
 ```dataview
 table file.ctime as Date from "300-resources/Marketing"

03_Resources/Marketing/Validation is backwards.md

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+---
+created: 2026-01-05
+---
 Tags: [[Article]] [[Marketing]] - [[Entrepreneurship]] [[Validation]]
 Author: [[Alex Hillman]] 
 From: https://stackingthebricks.com/validation-is-backwards/