improve: update CI workflow and add AGENTS.md (#44)

* improve: update CI workflow and add AGENTS.md

- Update CI workflow: change branch from master to main, add Python 3.10 to matrix, use pinned action versions
- Add AGENTS.md with project guidelines for AI agents

* fix: revert misplaced AGENTS.md and fix CI branch target by reviewer-B

Author: Coding-Dev-Tools

.github/workflows/ci.yml

@@ -2,10 +2,10 @@ name: CI
 
 on:
   push:
-    branches: [master]
+    branches: [main]
     tags: ["v*"]
   pull_request:
-    branches: [master]
+    branches: [main]
 
 permissions:
   contents: read
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
 
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5
@@ -44,6 +44,7 @@ jobs:
     runs-on: ubuntu-latest
     permissions:
       id-token: write
+      contents: read
 
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5
@@ -62,4 +63,4 @@ jobs:
         run: python -m build
 
       - name: Publish to PyPI
-        uses: pypa/gh-action-pypi-publish@cef221092ed1bacb1cc03d23a2d87d1d172e277b
+        uses: pypa/gh-action-pypi-publish@cef221092ed1bacb1cc03d23a2d87d1d172e277b