feat: add Claude Code post-edit lint hook using prek

Automatically runs `uv run prek` on Python files after Edit/Write
tool usage to catch lint and formatting issues at edit time.

.claude/hooks/post-edit-lint.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+# Everyone is on macOS so this should be fine, we don't account for Windows
+set -euo pipefail
+
+input=$(cat)
+file_path=$(echo "$input" | jq -r '.tool_input.file_path // empty')
+
+if [[ -z "$file_path" || ! -f "$file_path" ]]; then
+    exit 0
+fi
+
+if [[ "$file_path" == *.py ]]; then
+    uv run prek --files "$file_path" 2>/dev/null || true
+fi

.claude/settings.json

@@ -0,0 +1,16 @@
+{
+  "hooks": {
+    "PostToolUse": [
+      {
+        "matcher": "Edit|Write",
+        "hooks": [
+          {
+            "type": "command",
+            "command": ".claude/hooks/post-edit-lint.sh",
+            "timeout": 30
+          }
+        ]
+      }
+    ]
+  }
+}

.gitignore

@@ -269,6 +269,8 @@ tessl.json
 # Claude Code - track shared rules, ignore local config
 .claude/*
 !.claude/rules/
+!.claude/settings.json
+!.claude/hooks/
 **/node_modules/**
 **/dist-nuitka/**
 **/.npmrc