chore: add Prettier configuration for code formatting

- Install Prettier as dev dependency
- Configure Prettier with project style (no semicolons, single quotes)
- Add Markdown-specific formatting (100 char width, prose wrap)
- Create .prettierignore for generated files
- Add Zed workspace settings for format-on-save

Author: marshallswain

.prettierignore

@@ -0,0 +1,7 @@
+node_modules
+lib
+coverage
+.nyc_output
+*.min.js
+package-lock.json
+CHANGELOG.md

.prettierrc.json

@@ -0,0 +1,19 @@
+{
+  "semi": false,
+  "singleQuote": true,
+  "trailingComma": "none",
+  "printWidth": 120,
+  "tabWidth": 2,
+  "useTabs": false,
+  "arrowParens": "always",
+  "proseWrap": "always",
+  "overrides": [
+    {
+      "files": "*.md",
+      "options": {
+        "proseWrap": "always",
+        "printWidth": 100
+      }
+    }
+  ]
+}

.zed/settings.json

@@ -0,0 +1,18 @@
+{
+  "format_on_save": "on",
+  "formatter": {
+    "language_server": {
+      "name": "prettier"
+    }
+  },
+  "languages": {
+    "Markdown": {
+      "format_on_save": "on",
+      "formatter": {
+        "language_server": {
+          "name": "prettier"
+        }
+      }
+    }
+  }
+}

package-lock.json

@@ -81,6 +81,7 @@
     "mocha": "^10.1.0",
     "nyc": "^17.1.0",
     "pg": "^8.8.0",
+    "prettier": "^3.6.2",
     "shx": "^0.3.4",
     "sinon": "^21.0.0",
     "sqlite3": "^5.1.2",