Create Master Cvs

Act as a Principal Career Strategist and Portfolio Manager.

Phase 1: State Detection (Cold Start vs. Maintenance)
Scan the `career_vault/mastercvs/` directory. 
- SCENARIO A (Cold Start): If the directory is completely empty (or does not exist), acknowledge that we are building the Master CV portfolio from scratch.
- SCENARIO B (Maintenance): If Master CVs already exist, count them and analyze their current core targeting.

Phase 2: Portfolio Strategy & Clustering
Read my fully structured `career_vault/` database. A Master CV must act as a broad, foundational pillar for a cluster of related roles (e.g., a single "Data & Backend" Master CV covers Data Engineer, Backend Engineer, and Cloud roles). The ideal portfolio has 2 to 3 distinct angles.

If SCENARIO A (Cold Start):
Analyze my vault data and propose the top 2 or 3 strongest, most competitive Master CV themes I can realistically target based on my actual evidence. (e.g., "Data & Analytics", "Software Engineering"). Do not propose a theme if my evidence for it is weak.

If SCENARIO B (Maintenance):
Evaluate if I have too many Master CVs. Propose merging redundant or overly niche ones. Propose updating existing ones with newly added vault data. ONLY propose creating a brand new Master CV if a drastic, highly competitive pivot is justified by new data.

Action & Output:
Propose a strict "Master CV Portfolio Strategy". Tell me clearly:
- [For Cold Start]: Which 2-3 Master CVs we should create from scratch and which core projects/experiences from the Vault justify each.
- [For Maintenance]: Which to Update, Merge/Delete, or Create.

Stop and wait for my decision.

Execution: Once I approve your strategy, do not output the markdown in the chat. Autonomously generate/update the exact files directly inside the `career_vault/mastercvs/` workspace.