From 5c9579e0eb15151e0b5948222332de15b47db5af Mon Sep 17 00:00:00 2001
From: tupe12334 <ofek.gabay.he@gmail.com>
Date: Mon, 20 Jul 2026 03:52:07 +0300
Subject: [PATCH] chore: adopt linecheck for per-file line-count enforcement
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Adds linecheck.yml (rust files warn at 200 lines, error at 1100 — a
buffer above the current largest file so CI stays green) and a
linecheck CI job that installs via cargo and runs `linecheck .`.

Closes #183
---
 .github/workflows/ci.yml | 25 +++++++++++++++++++++++++
 linecheck.yml            | 12 ++++++++++++
 2 files changed, 37 insertions(+)
 create mode 100644 linecheck.yml

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3532ab5..e3418a4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -90,6 +90,31 @@ jobs:
         with:
           manifest-path: core/Cargo.toml
 
+  linecheck:
+    name: Line count check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+
+      - name: Install Rust stable
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Cache cargo registry
+        uses: actions/cache@v6
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+          key: ${{ runner.os }}-cargo-linecheck-${{ hashFiles('core/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-linecheck-
+
+      - name: Install linecheck
+        run: cargo install linecheck --locked
+
+      - name: Run linecheck
+        run: linecheck .
+
   coverage:
     name: Code coverage (cargo-llvm-cov)
     runs-on: ubuntu-latest
diff --git a/linecheck.yml b/linecheck.yml
new file mode 100644
index 0000000..5bc9927
--- /dev/null
+++ b/linecheck.yml
@@ -0,0 +1,12 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/tupe12334/linecheck/main/schema/linecheck.schema.json
+
+rules:
+  - pattern: "**/*.rs"
+    warn: 200
+    warn_message: "Getting long — consider splitting into submodules"
+    error: 1100
+    error_message: "File exceeds the adoption-day gate; split before merging or lower the gate"
+
+exclude:
+  - "**/target/**"
+  - "**/Cargo.lock"