feat: modernize project with comprehensive tooling improvements

- Update all dependencies to latest versions (September 2025)
- Switch package manager from npm to pnpm with proper configuration
- Add comprehensive testing suite with Vitest and environment isolation
- Implement semantic release with conventional commits configuration
- Add code quality tools: ESLint, Prettier, and Husky pre-push hooks
- Modernize README with updated badges, installation instructions, and workflow examples
- Remove legacy "buy me a coffee" section and update documentation
- Add development tooling with watch mode, test UI, and coverage reporting
- Configure proper TypeScript compilation with updated tsconfig
- Add comprehensive project documentation in CLAUDE.md

This modernization brings the project up to current best practices with
automated testing and improved developer experience.

Author: omar-dulaimi

.github/CONTRIBUTING.md

@@ -6,11 +6,10 @@ Reading and following these guidelines will help us make the contribution proces
 
 ## Quicklinks
 
-* [Getting Started](#getting-started)
-    * [Issues](#issues)
-    * [Pull Requests](#pull-requests)
-* [Getting Help](#getting-help)
-
+- [Getting Started](#getting-started)
+  - [Issues](#issues)
+  - [Pull Requests](#pull-requests)
+- [Getting Help](#getting-help)
 
 ## Getting Started
 

.github/FUNDING.yml

@@ -1,2 +1 @@
 github: omar-dulaimi
-custom: ["https://www.buymeacoffee.com/omardulaimi"]

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -48,4 +48,4 @@ body:
 
         ```
     validations:
-      required: true
+      required: true

.github/ISSUE_TEMPLATE/config.yml

@@ -2,4 +2,4 @@ blank_issues_enabled: true
 contact_links:
   - name: Ask a question
     url: https://github.com/omar-dulaimi/firestore-indexes-diff/discussions/new
-    about: Ask questions and discuss with others
+    about: Ask questions and discuss with others

.github/ISSUE_TEMPLATE/feature_request.md

@@ -8,7 +8,6 @@ assignees: ''
 
 Please consider supporting me for faster fixes, responses and features [Sponsor Me](https://github.com/sponsors/omar-dulaimi)
 
-
 ## Problem
 
 <!-- A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] -->
@@ -23,4 +22,4 @@ Please consider supporting me for faster fixes, responses and features [Sponsor
 
 ## Additional context
 
-<!-- Add any other context or screenshots about the feature request here. -->
+<!-- Add any other context or screenshots about the feature request here. -->

.github/PULL_REQUEST_TEMPLATE.md

@@ -8,7 +8,6 @@ Please see the [contributing guidelines](https://github.com/omar-dulaimi/firesto
 >
 > If the UI is being changed, please provide screenshots.
 
-
 ### References
 
 > Include any links supporting this change such as a:

.husky/pre-commit

@@ -0,0 +1 @@
+npm test

.husky/pre-push

@@ -0,0 +1,3 @@
+pnpm run lint
+pnpm run test:run
+pnpm run build

.npmrc

@@ -0,0 +1,2 @@
+node-linker=hoisted
+prefer-workspace-packages=true

.opensource/project.json

@@ -1,15 +1,12 @@
 {
-    "name": "Firestore Indexes Diff",
-    "platforms": [
-        "Admin",
-        "Node"
-    ],
-    "content": "README.md",
-    "related": [],
-    "tabs": [
-        {
-            "title": "NPM",
-            "href": "https://www.npmjs.com/package/firestore-indexes-diff"
-        }
-    ]
-}
+  "name": "Firestore Indexes Diff",
+  "platforms": ["Admin", "Node"],
+  "content": "README.md",
+  "related": [],
+  "tabs": [
+    {
+      "title": "NPM",
+      "href": "https://www.npmjs.com/package/firestore-indexes-diff"
+    }
+  ]
+}