diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..dbf9e03
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,20 @@
+# EditorConfig — https://editorconfig.org
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_style = space
+indent_size = 4
+
+[*.{yml,yaml,json,toml}]
+indent_size = 2
+
+[*.md]
+# Preserve trailing whitespace in Markdown (used for hard line breaks)
+trim_trailing_whitespace = false
+
+[Makefile]
+indent_style = tab
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index b3d7aae..b584e3a 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -5,7 +5,6 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly"
-    target-branch: "development"
     labels: ["infra", "needs-triage"]
 
   # Dev dependencies (pytest, coverage tooling). The package itself has
@@ -14,5 +13,4 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly"
-    target-branch: "development"
     labels: ["infra", "needs-triage"]
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 612a80a..fc338d1 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -102,14 +102,16 @@ word choice is especially welcome.
 
 ## 📬 Submitting changes
 
-1. Fork the repository and create a topic branch off `development`
-   (not `main` — `main` is the released line).
+1. Fork the repository and create a topic branch off `main`
+   (this project uses a single-branch model — `main` is the trunk,
+   and releases are tagged from it).
 2. Make your changes in logical commits — one concern per commit.
    Follow conventional-commit style where reasonable
    (`fix(linter): ...`, `feat(cli): ...`).
 3. Run `pytest` and make sure it's green.
-4. Open a Pull Request targeting `development`. The PR template will
+4. Open a Pull Request targeting `main`. The PR template will
    prompt you for test evidence and any security considerations.
+   All PRs must pass the required `ci-ok` status check before merge.
 
 ## 📦 Releasing
 
diff --git a/README.md b/README.md
index 6ac346d..ad17836 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,11 @@
-# README.md
-
 # 📜 Devnagiri Maithili DSL
 
+[![CI](https://github.com/alphacrack/python-maithili-dsl/actions/workflows/ci.yml/badge.svg)](https://github.com/alphacrack/python-maithili-dsl/actions/workflows/ci.yml)
+[![PyPI](https://img.shields.io/pypi/v/python-maithili.svg)](https://pypi.org/project/python-maithili/)
+[![Python versions](https://img.shields.io/pypi/pyversions/python-maithili.svg)](https://pypi.org/project/python-maithili/)
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](LICENSE)
+[![Code of Conduct](https://img.shields.io/badge/Contributor%20Covenant-2.1-4baaaa.svg)](CODE_OF_CONDUCT.md)
+
 A modern Python-compatible programming DSL that lets you write code in **Maithili** using the **Devanagari script**.
 
 ---