Add .env loading via Node --env-file flag and update .gitignore

Use Node 22+ native --env-file=../../.env in dev/spike scripts so
packages pick up root .env variables without a dotenv dependency.
Also add devenv, direnv, and pre-commit entries to .gitignore.

.gitignore

···
 
 # OS
 .DS_Store
+
+# Devenv
+.devenv*
+devenv.local.nix
+devenv.local.yaml
+
+# direnv
+.direnv
+
+# pre-commit
+.pre-commit-config.yaml

CLAUDE.md

···
 - **Hono JSX `children`:** Use `PropsWithChildren<T>` from `hono/jsx` for components that accept children. Unlike React, Hono's `FC<T>` does not include `children` implicitly.
 - **HTMX attributes in JSX:** The `typed-htmx` package provides types for `hx-*` attributes. See `packages/web/src/global.d.ts` for the augmentation.
 - **Glob expansion in npm scripts:** `@atproto/lex-cli` needs file paths, not globs. Use `bash -c 'shopt -s globstar && ...'` to expand `**/*.json` in npm scripts.
+- **`.env` loading:** Dev and spike scripts use Node's `--env-file=../../.env` flag to load the root `.env` file. No `dotenv` dependency needed.
 
 ## Git Conventions
 

packages/appview/package.json

···
   "type": "module",
   "scripts": {
     "build": "tsc",
-    "dev": "tsx watch src/index.ts",
+    "dev": "tsx watch --env-file=../../.env src/index.ts",
     "start": "node dist/index.js",
     "lint": "tsc --noEmit",
     "clean": "rm -rf dist"

packages/spike/package.json

···
   "private": true,
   "type": "module",
   "scripts": {
-    "spike": "tsx src/index.ts",
+    "spike": "tsx --env-file=../../.env src/index.ts",
     "clean": "rm -rf dist"
   },
   "dependencies": {

packages/web/package.json

···
   "type": "module",
   "scripts": {
     "build": "tsc",
-    "dev": "tsx watch src/index.ts",
+    "dev": "tsx watch --env-file=../../.env src/index.ts",
     "start": "node dist/index.js",
     "lint": "tsc --noEmit",
     "clean": "rm -rf dist"