Tighten VSIX package ignore

Author: MelbourneDeveloper

.vscodeignore

@@ -1,6 +1,17 @@
 .vscode/**
 .vscode-test/**
 .venv/**
+.cache/**
+.clinerules/**
+.commandtree/**
+.codex/**
+.cursorrules
+.mcp.json
+.nyc_output/**
+.playwright-mcp/**
+.windsurfrules
+build/**
+dist/**
 src/**
 test-fixtures/**
 out/test/**
@@ -10,16 +21,29 @@ tools/**
 .too_many_cooks/**
 .claude/**
 .github/**
+.vscodeignore
+.prettierrc*
 .gitignore
 .mocharc.json
 .vscode-test.mjs
 cspell.json
 tsconfig.json
 eslint.config*
+Agents.md
+AGENTS.md
 icon.svg
 CLAUDE.md
 Claude.md
 SPEC.md
+Makefile
+coverage/**
+coverage-thresholds.json
+docs/**
+dotnet-tools.json
+logs/**
+opencode.json
+scratch/**
+test-results/**
 **/*.map
 **/*.ts
 **/*.bak