chore: extract session setup into scripts/setup.sh and add Copilot workflow

.claude/settings.json

@@ -6,7 +6,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "cd \"$CLAUDE_PROJECT_DIR\" && uv sync --dev --all-extras && uv run pre-commit install --install-hooks",
+            "command": "\"$CLAUDE_PROJECT_DIR/scripts/setup.sh\"",
             "timeout": 120,
             "statusMessage": "Syncing dependencies and installing pre-commit hooks..."
           }

.github/workflows/copilot-setup-steps.yml

@@ -0,0 +1,27 @@
+name: "Copilot Setup Steps"
+
+on:
+  workflow_dispatch:
+  push:
+    paths:
+      - .github/workflows/copilot-setup-steps.yml
+  pull_request:
+    paths:
+      - .github/workflows/copilot-setup-steps.yml
+
+jobs:
+  copilot-setup-steps:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v5
+
+      - name: Run setup script
+        run: bash scripts/setup.sh

AGENTS.md

@@ -22,6 +22,10 @@ Add packages with:
 uv add <package>
 ```
 
+## Pull Requests
+
+Use [conventional commit](https://www.conventionalcommits.org/) formatting for pull request titles and descriptions. The pull request title and description should typically match the message and description of the first commit.
+
 ## Development
 
 ```bash

scripts/setup.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+set -e
+
+cd "$(dirname "$0")/.."
+
+uv sync --dev --all-extras
+uv run pre-commit install --install-hooks