Add skills.sh.json and update SKILL.md descriptions for clarity and consistency

skills.sh.json

@@ -0,0 +1,14 @@
+{
+  "$schema": "https://skills.sh/schemas/skills.sh.schema.json",
+  "notGrouped": "bottom",
+  "groupings": [
+    {
+      "title": "XTB Tools",
+      "description": "Skills for analyzing XTB brokerage exports and preparing Wealthfolio imports.",
+      "skills": [
+        "xtb-portfolio-review",
+        "xtb-wealthfolio-export"
+      ]
+    }
+  ]
+}

skills/xtb-portfolio-review/SKILL.md

@@ -1,6 +1,6 @@
 ---
 name: xtb-portfolio-review
-description: Use when analyzing XTB brokerage .xlsx exports with the local portfolio review tool, generating or checking HTML/CSV reports, validating cash reconciliation, reviewing holdings, risk, income, performance, or explaining report outputs from main.py.
+description: Use when analyzing XTB brokerage .xlsx exports, creating investment portfolio analysis reports, generating HTML/CSV outputs, validating cash reconciliation, reviewing holdings, dividends, risk, income, performance, or explaining report outputs from main.py.
 ---
 
 # XTB Portfolio Review

skills/xtb-wealthfolio-export/SKILL.md

@@ -1,6 +1,6 @@
 ---
 name: xtb-wealthfolio-export
-description: Use when converting XTB brokerage .xlsx exports to Wealthfolio-compatible CSV, validating Wealthfolio import rows, checking transaction activity mappings, or debugging exporter.py output.
+description: Use when converting XTB brokerage .xlsx exports to Wealthfolio-compatible CSV imports, validating brokerage export rows, checking transaction activity mappings, reviewing trade/dividend/cash classifications, or debugging exporter.py output.
 ---
 
 # XTB Wealthfolio Export