Format all project startup docs with Prettier

- Add Prettier as dev dependency
- Apply formatting to interview map, retrospective, and planning document

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

package-lock.json

@@ -0,0 +1,28 @@
+{
+  "name": "Control-Valve-Factory-Information-Management-System-Project",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "devDependencies": {
+        "prettier": "^3.8.2"
+      }
+    },
+    "node_modules/prettier": {
+      "version": "3.8.2",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.8.2.tgz",
+      "integrity": "sha512-8c3mgTe0ASwWAJK+78dpviD+A8EqhndQPUBpNUIPt6+xWlIigCwfN01lWr9MAede4uqXGTEKeQWTvzb3vjia0Q==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "prettier": "bin/prettier.cjs"
+      },
+      "engines": {
+        "node": ">=14"
+      },
+      "funding": {
+        "url": "https://github.com/prettier/prettier?sponsor=1"
+      }
+    }
+  }
+}