feat: implement core linting logic, rule analyzers, and CLI tooling w…

.github/workflows/ci.yml

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+name: CI
+
+on:
+  push:
+    branches: [ main ]
+    tags: [ 'v*' ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build-and-test:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: '10.0.x'
+
+    - name: Restore dependencies
+      run: dotnet restore SharpLinter.slnx
+
+    - name: Build Solution
+      run: dotnet build SharpLinter.slnx --configuration Release --no-restore
+
+    - name: Run Tests
+      run: dotnet test SharpLinter.slnx --configuration Release --no-build --verbosity normal
+
+    - name: Pack NuGet Packages
+      run: dotnet pack SharpLinter.slnx --configuration Release --no-build -o artifacts
+
+    - name: Upload Artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: nuget-packages
+        path: artifacts/*.nupkg

.sharplinter.json

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+{
+  "preset": "recommended",
+  "customRulesFile": ".sharplinter.rules.yaml",
+  "exclude": [
+    "**/bin/**",
+    "**/obj/**",
+    "**/artifacts/**",
+    "**/nupkg/**"
+  ],
+  "formatting": {
+    "enabled": true,
+    "indentSize": 4,
+    "useTabs": false,
+    "newLineForBraces": true
+  }
+}

.sharplinter.rules.yaml

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+# SharpLinter Custom Rules
+# Define your own rules here without writing C# analyzer code.
+
+rules:
+  # Example 1: Flag TODO or HACK comments in code
+  - id: "CUSTOM001"
+    title: "Clean up temporary comments"
+    description: "HACK, TODO, or FIXME comments should be resolved before committing code."
+    category: "Maintainability"
+    severity: "warning"
+    type: "pattern"
+    pattern:
+      kind: "comment"
+      match: "TODO|HACK|FIXME"
+
+  # Example 2: Limit method length to 40 lines
+  - id: "CUSTOM002"
+    title: "Method exceeds line limit"
+    description: "Methods should not exceed 40 lines. Consider decomposing complex logic."
+    category: "Maintainability"
+    severity: "suggestion"
+    type: "metric"
+    metric:
+      target: "method"
+      measure: "lines"
+      max: 40
+
+  # Example 3: Ban public fields
+  - id: "CUSTOM003"
+    title: "Encapsulation violation"
+    description: "Public instance fields should be refactored to properties."
+    category: "Design"
+    severity: "warning"
+    type: "naming"
+    naming:
+      target: "field"
+      pattern: "^[a-z_][a-zA-Z0-9]*$" # camelCase fields should be private/protected

LICENSE

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+MIT License
+
+Copyright (c) 2026 rahu619
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.