feat(flattener): add codebase flattening tool and related configs

- Add new flattener tool to convert codebase to XML format
- Update package.json with new scripts and dependencies
- Add .vscode settings for SonarLint integration
- Update .gitignore to exclude additional directories and files

.gitignore

@@ -29,8 +29,3 @@ sample-project/*
 .gemini
 .bmad*/.cursor/
 web-bundles/
-docs/architecture/
-docs/prd/
-docs/stories/
-docs/project-architecture.md
-biome.json

package-lock.json

@@ -3219,6 +3219,56 @@
         "ieee754": "^1.1.13"
       }
     },
+    "node_modules/browserslist": {
+      "version": "4.25.1",
+      "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.25.1.tgz",
+      "integrity": "sha512-KGj0KoOMXLpSNkkEI6Z6mShmQy0bc1I+T7K9N81k4WWMrfz+6fQ6es80B/YLAeRoKvjYE1YSHHOW1qe9xIVzHw==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/browserslist"
+        },
+        {
+          "type": "tidelift",
+          "url": "https://tidelift.com/funding/github/npm/browserslist"
+        },
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "caniuse-lite": "^1.0.30001726",
+        "electron-to-chromium": "^1.5.173",
+        "node-releases": "^2.0.19",
+        "update-browserslist-db": "^1.1.3"
+      },
+      "bin": {
+        "browserslist": "cli.js"
+      },
+      "engines": {
+        "node": "^6 || ^7 || ^8 || ^9 || ^10 || ^11 || ^12 || >=13.7"
+      }
+    },
+    "node_modules/bser": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/bser/-/bser-2.1.1.tgz",
+      "integrity": "sha512-gQxTNE/GAfIIrmHLUE3oJyp5FO6HRBfhjnw4/wMmA63ZGDJnWBmgY/lyQBpnDUkGmAhbSe39tx2d/iTOAfglwQ==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "node-int64": "^0.4.0"
+      }
+    },
+    "node_modules/buffer-from": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.2.tgz",
+      "integrity": "sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/callsites": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/callsites/-/callsites-3.1.0.tgz",
@@ -3645,6 +3695,24 @@
         "node": ">=0.8"
       }
     },
+    "node_modules/co": {
+      "version": "4.6.0",
+      "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
+      "integrity": "sha512-QVb0dM5HvG+uaxitm8wONl7jltx8dqhfU33DcqtOZcLSVIKSDDLDi7+0LbAKiyI8hD9u42m2YxXSkMGWThaecQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "iojs": ">= 1.0.0",
+        "node": ">= 0.12.0"
+      }
+    },
+    "node_modules/collect-v8-coverage": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/collect-v8-coverage/-/collect-v8-coverage-1.0.2.tgz",
+      "integrity": "sha512-lHl4d5/ONEbLlJvaJNtsF/Lz+WvB07u2ycqTYbdrq7UypDXailES4valYb2eWiJFxZlVmpGekfqoxQhzyFdT4Q==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/color-convert": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
@@ -3955,6 +4023,16 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/deepmerge": {
+      "version": "4.3.1",
+      "resolved": "https://registry.npmjs.org/deepmerge/-/deepmerge-4.3.1.tgz",
+      "integrity": "sha512-3sUqbMEc77XqpdNO7FRyRog+eW3ph+GYCbj+rK+uYyRMuwsVy0rMiVtPn+QJlKFvWP/1PYpapqYn0Me2knFn+A==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/deprecation": {
       "version": "2.3.1",
       "resolved": "https://registry.npmjs.org/deprecation/-/deprecation-2.3.1.tgz",
@@ -13320,6 +13398,16 @@
         "defaults": "^1.0.3"
       }
     },
+    "node_modules/walker": {
+      "version": "1.0.8",
+      "resolved": "https://registry.npmjs.org/walker/-/walker-1.0.8.tgz",
+      "integrity": "sha512-ts/8E8l5b7kY0vlWLewOkDXMmPdLcVV4GmOQLyxuSswIJsweeFZtAsMF7k1Nszz+TYBQrlYRmzOnr398y1JemQ==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "makeerror": "1.0.12"
+      }
+    },
     "node_modules/which": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",