chore: prepare for v0.1.0 release

Added MIT License, configured .gitignore, downgraded go.mod to 1.21 for broader compatibility, added GitHub Actions CI workflow, and cleaned up temporary analysis files.

Author: rebelice

.github/workflows/ci.yml

@@ -0,0 +1,28 @@
+name: Go CI
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: '1.21'
+
+    - name: Build
+      run: go build -v ./...
+
+    - name: Test
+      run: go test -v ./...
+
+    - name: Regression Tests Stats
+      run: go test -v ./parser/pgregress/ -run TestPGRegressStats

.gitignore

@@ -1 +1,34 @@
-.worktrees/
+# Binaries
+#
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work
+
+# VS Code output
+.vscode/
+
+# IntelliJ
+.idea/
+
+# Mac OS
+.DS_Store
+
+# Temporary files
+*.tmp
+gramy_diff_report.md
+parser_rules.txt
+postgres_rules.txt

LICENSE

@@ -0,0 +1,19 @@
+Copyright (c) 2026, Rebelice Yang
+Copyright (c) 1996-2024, The PostgreSQL Global Development Group
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose, without fee, and without a written agreement
+is hereby granted, provided that the above copyright notice and this
+paragraph and the following two paragraphs appear in all copies.
+
+IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
+DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING
+LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
+DOCUMENTATION, EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+
+THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
+INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATIONS TO
+PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

go.mod

@@ -1,3 +1,3 @@
 module github.com/pgparser/pgparser
 
-go 1.25.5
+go 1.21