chore: Add rebrand assets, implementation guide, and gitignore local settings

Adds brand-assets/ (SVGs, brand guide) and REBRAND-IMPLEMENTATION-GUIDE.md
as reference docs. Removes .claude/settings.local.json from tracking
(contains local permissions and tokens).

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.claude/settings.local.json

@@ -1,28 +0,0 @@
-{
-  "permissions": {
-    "allow": [
-      "Bash(tasklist:*)",
-      "Bash(findstr:*)",
-      "Bash(powershell -Command:*)",
-      "Bash(timeout:*)",
-      "Bash(netstat:*)",
-      "mcp__postgres__query",
-      "Bash(curl:*)",
-      "Bash(TOKEN=\"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiI0MjdjMDI1Ni00N2VmLTRiODAtYjZjNS1iODE5MDAyMzdhMjkiLCJleHAiOjE3Njk1NjA4NTgsInR5cGUiOiJhY2Nlc3MifQ.7eBGz7awT6BOPbfNv303zm4ERQBeUOGHLRPgQMgwchM\")",
-      "Bash(git add:*)",
-      "Bash(git commit:*)",
-      "Bash(git push:*)",
-      "Bash(dir /b \"C:\\\\Dev\\\\Projects\\\\patherly\")",
-      "Bash(npm create:*)",
-      "Bash(npm install:*)",
-      "Bash(npx tailwindcss:*)",
-      "Bash(node node_modules/tailwindcss/lib/cli.js:*)",
-      "Bash(npm exec:*)",
-      "Bash(npm uninstall:*)",
-      "Bash(npm run build:*)",
-      "Bash(npx tsc:*)",
-      "Bash(npm run type-check:*)",
-      "Bash(dir /b frontendsrccomponentssession frontendsrchooks)"
-    ]
-  }
-}