restore: recover deleted documentation, CI/CD, and infrastructure files

Restored from origin/main (b4663fb):
- .github/ workflows and issue templates
- .gitignore (proper exclusions)
- .opencode/agent/web_developer.md
- AGENTS.md, BUILD.md, PROGRESS.md
- dev-docs/ (9 architecture/implementation docs)
- docs/screenshots/ (4 UI screenshots)
- images/ (CodeNomad icons)
- package-lock.json (dependency lockfile)
- tasks/ (25+ project task files)

Also restored original source files that were modified:
- packages/ui/src/App.tsx
- packages/ui/src/lib/logger.ts
- packages/ui/src/stores/instances.ts
- packages/server/src/server/routes/workspaces.ts
- packages/server/src/workspaces/manager.ts
- packages/server/src/workspaces/runtime.ts
- packages/server/package.json

Kept new additions:
- Install-*.bat/.sh (enhanced installers)
- Launch-*.bat/.sh (new launchers)
- README.md (SEO optimized with GLM 4.7)

packages/server/package.json

@@ -16,11 +16,10 @@
     "codenomad": "dist/bin.js"
   },
   "scripts": {
-    "build": "npm run build:ui && npm run prepare-ui && tsc -p tsconfig.json && npm run prepare-config",
+    "build": "npm run build:ui && npm run prepare-ui && tsc -p tsconfig.json",
     "build:ui": "npm run build --prefix ../ui",
     "prepare-ui": "node ./scripts/copy-ui-dist.mjs",
-    "prepare-config": "node ./scripts/copy-opencode-config.mjs",
-    "dev": "cross-env CODENOMAD_DEV=1 CLI_UI_DEV_SERVER=http://localhost:3000 tsx src/index.ts",
+    "dev": "cross-env CLI_UI_DEV_SERVER=http://localhost:3000 tsx src/index.ts",
     "typecheck": "tsc --noEmit -p tsconfig.json"
   },
   "dependencies": {