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)

tasks/todo/023-symbol-attachments.md

@@ -0,0 +1,37 @@
+---
+title: Symbol Attachments
+description: Attach code symbols with LSP integration.
+---
+
+Implement Symbol Attachments
+
+---
+
+### LSP Integration
+
+Integrate with the Language Server Protocol (LSP) to get a list of symbols in the current project.
+
+---
+
+### @ Symbol Autocomplete
+
+When a user types `@` followed by a symbol-like pattern, trigger an autocomplete with relevant code symbols.
+
+Include symbols from various file types supported by LSP.
+
+---
+
+### Attach and Navigate Symbols
+
+Allow users to select a symbol from the autocomplete list to attach it to the prompt.
+
+Display attached symbols as interactive chips. Optionally, implement functionality to jump to the symbol definition in an editor.
+
+---
+
+### Acceptance Criteria
+
+- Typing `@` followed by a partial symbol name displays matching symbol suggestions.
+- Selecting a symbol creates an attachment chip.
+- Attached symbols are correctly formatted for submission.
+- (Optional) Clicking a symbol chip navigates to its definition.