chore: rename workflow files from .yml to .yaml (#54)

Author: ryoppippi

.cursor/rules/release-please-standards.mdc

@@ -23,7 +23,7 @@ actions:
          ```
          .release-please-config.json    # Release configuration
          .release-please-manifest.json  # Version tracking
-         .github/workflows/release.yml  # Release workflow
+         .github/workflows/release.yaml  # Release workflow
          ```
 
       2. Commit Message Format:

.github/workflows/ci.yml .github/workflows/ci.yaml.github/workflows/ci.yml renamed to .github/workflows/ci.yaml

@@ -5,13 +5,13 @@ on:
     paths:
       - "flake.nix"
       - "flake.lock"
-      - ".github/workflows/nix-flake.yml"
+      - ".github/workflows/nix-flake.yaml"
       - ".github/actions/setup-nix/**"
   pull_request:
     paths:
       - "flake.nix"
       - "flake.lock"
-      - ".github/workflows/nix-flake.yml"
+      - ".github/workflows/nix-flake.yaml"
       - ".github/actions/setup-nix/**"
 
 concurrency: