chore(ms-ai-architect): align plugin.json and .gitignore with marketplace

Bump version to 1.7.0 (open-source release). Add author full name,
license, repository URL, and keywords to plugin.json.

Modernize .gitignore: remove dead orchestrator/ entries, add .claude/,
node_modules/, *.pdf, *.log, secrets.*.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

plugins/ms-ai-architect/.claude-plugin/plugin.json

@@ -1,8 +1,11 @@
 {
   "name": "ms-ai-architect",
-  "version": "1.5.0",
-  "description": "Microsoft AI Solution Architect - høynivå arkitekturveiledning for hele Microsoft AI-stacken",
+  "version": "1.7.0",
+  "description": "Microsoft AI Solution Architect - structured architecture guidance for the full Microsoft AI stack",
   "author": {
-    "name": "KTG"
-  }
+    "name": "Kjell Tore Guttormsen"
+  },
+  "license": "MIT",
+  "repository": "https://git.fromaitochitta.com/open/ktg-plugin-marketplace",
+  "keywords": ["microsoft", "azure", "ai-architect", "governance", "security", "norwegian-public-sector", "eu-ai-act"]
 }

plugins/ms-ai-architect/.gitignore

@@ -1,15 +1,22 @@
 *.local.md
-.claude/settings.local.json
 .mcp.json
 .DS_Store
+.claude/
 
 # Secrets
 .env
 *.key
 *.pem
 credentials.*
+secrets.*
 
-orchestrator/state.json
-orchestrator/logs/
+# Generated artifacts
+*.pdf
+*.log
+
+# Node
+node_modules/
+
+# Runtime state
 .work/
 org/