refactor(ci): simplify lint by leveraging treefmt

treefmt already includes ruff-check and typos, so remove redundant
commands from justfile and CI workflow.

Changes:
- Remove separate `uv run ruff check` from lint (treefmt runs ruff-check)
- Remove `typos` and `typos-fix` commands (treefmt runs typos)
- Remove typos CI job (covered by lint via treefmt)

Author: ryoppippi

.github/workflows/ci.yaml

@@ -30,18 +30,6 @@ jobs:
       - name: Run Gitleaks
         run: nix develop --command just gitleaks
 
-  typos:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
-
-      - name: Setup Nix
-        uses: ./.github/actions/setup-nix
-
-      - name: Run Typo Check
-        run: nix develop --command just typos
-
   ci:
     runs-on: ubuntu-latest
     strategy:

justfile

@@ -2,14 +2,12 @@
 install *extras:
 	uv sync {{ extras }}
 
-# Run ruff linting and format check
+# Run linting and format check (ruff, typos, nixfmt, oxfmt)
 lint:
-	uv run ruff check .
 	nix fmt -- --fail-on-change
 
 # Format and auto-fix linting issues
 format:
-	uv run ruff check --fix .
 	nix fmt
 
 # Run all tests
@@ -32,18 +30,10 @@ test-examples:
 ty:
 	uv run ty check stackone_ai
 
-# Run typos spell checker
-typos:
-	typos --config typos.toml .
-
 # Run gitleaks secret detection
 gitleaks:
 	gitleaks detect --source . --config .gitleaks.toml
 
-# Fix typos
-typos-fix:
-	typos --config typos.toml --write-changes .
-
 # Update version in __init__.py
 update-version:
 	uv run scripts/update_version.py