From b1c04d8f88b23ef49d08147c8803cdbe908db9e8 Mon Sep 17 00:00:00 2001
From: Alex Gorevski <algore@microsoft.com>
Date: Tue, 17 Feb 2026 13:03:15 -0800
Subject: [PATCH] feat(tooling): add .editorconfig, rustfmt.toml, and
 clippy.toml

Add explicit linting and formatting configuration files to document
intent and provide consistent defaults across editors and platforms.

- .editorconfig: UTF-8, LF line endings, 4-space indent for Rust,
  2-space for YAML/TOML, preserve trailing whitespace in Markdown.
- rustfmt.toml: Pin edition to 2021 matching Cargo.toml. Uses
  standard defaults; file documents that this is intentional.
- clippy.toml: Set cognitive-complexity-threshold to 30,
  too-many-arguments-threshold to 10, and too-many-lines-threshold
  to 200. Thresholds tuned to match existing codebase patterns and
  reduce noise from existing allow-attributes.

All values match current implicit defaults or are tuned to avoid
triggering on existing code. No source code changes required.

Validated: cargo fmt --check and cargo clippy -D clippy::correctness
both pass with no regressions.

Resolves #662

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---
 .editorconfig | 25 +++++++++++++++++++++++++
 clippy.toml   |  9 +++++++++
 rustfmt.toml  |  1 +
 3 files changed, 35 insertions(+)
 create mode 100644 .editorconfig
 create mode 100644 clippy.toml
 create mode 100644 rustfmt.toml

diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..eaf9deb
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,25 @@
+# EditorConfig — https://editorconfig.org
+# Provides consistent formatting defaults across editors and platforms.
+
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_style = space
+indent_size = 4
+
+[*.md]
+# Trailing whitespace is significant in Markdown (line breaks).
+trim_trailing_whitespace = false
+
+[*.{yml,yaml}]
+indent_size = 2
+
+[*.toml]
+indent_size = 2
+
+[Dockerfile]
+indent_size = 4
diff --git a/clippy.toml b/clippy.toml
new file mode 100644
index 0000000..c45fd63
--- /dev/null
+++ b/clippy.toml
@@ -0,0 +1,9 @@
+# Clippy configuration for ZeroClaw.
+# Thresholds tuned to match codebase patterns and reduce noise from
+# existing allow-attributes while still catching genuinely complex code.
+
+cognitive-complexity-threshold = 30
+
+too-many-arguments-threshold = 10
+
+too-many-lines-threshold = 200
diff --git a/rustfmt.toml b/rustfmt.toml
new file mode 100644
index 0000000..3a26366
--- /dev/null
+++ b/rustfmt.toml
@@ -0,0 +1 @@
+edition = "2021"