refactor: move data storage to ~/.gwaln and tidy repo layout

Why:
User data should live in the home directory, not inside the repo. This
prevents data loss on updates and keeps the codebase clean.

What:
- Switch ROOT to ~/.gwaln and copy topics.json on first run
- Remove data/, analysis/, notes/, and temp/ from the repo
- Always show logo and clearer unpublished status in HTML reports
- Remove truncation limits and expand HTML report previews
- Add postinstall step to ensure dist/cli.js is executable

Author: doguabaris

.gitignore

@@ -13,9 +13,6 @@ temp/
 *.local
 .gwalnrc.json
 .env
-analysis/
-analysis/*.json
-analysis/*.html
 
 # Editor directories and files
 .vscode/*

.gwalnrc.example.json

@@ -0,0 +1,16 @@
+{
+  "dkgEdgeNodeUrl": "https://positron.origin-trail.network",
+  "dkgNodePort": 8900,
+  "dkgEnvironment": "mainnet",
+  "dkgGraphId": "default-graph",
+  "dkgBlockchainId": "base:8453",
+  "dkgPublicKey": "YOUR_PUBLIC_KEY_HERE",
+  "dkgPrivateKey": "YOUR_PRIVATE_KEY_HERE",
+  "dkgRpcUrl": "https://base-mainnet.g.alchemy.com/v2/YOUR_ALCHEMY_KEY",
+  "publishEpochs": 2,
+  "publishMaxRetries": 120,
+  "publishPollFrequencySeconds": 2,
+  "publishDryRun": false,
+  "geminiApiKey": "YOUR_GEMINI_API_KEY_HERE",
+  "geminiModel": "gemini-2.5-flash"
+}