docs: update wiki for v1.1.0 release
- Add NVIDIA-NIM-Provider.md page
- Add Command-Palette.md page
- Add Chat-History.md page
- Add CodeComplexity-Tool.md page
- Add Mouse-Support.md page
- Update Home.md: v1.1.0, 31 screens, new page links
- Update Provider-System.md: NVIDIA NIM section, 3-provider registration
- Update Terminal-UI.md: 31 screens, mouse support, command palette
- Update Slash-Commands.md: /complexity analysis command
- Update Tools-System.md: CodeComplexity tool
- Update Architecture.md: nvidia/ directory, DefaultNvidiaBaseURL constant
- Update Keybindings.md: mouse support section
- Update Error-Handling.md: HTTPStatusError, improved provider error detection
docs: add comprehensive 24-page wiki covering entire codebase
Covers architecture, six-phase workflow, tools system, provider system,
subagents, task runner, prompt system, code intelligence (4 language
parsers), token estimation, git integration, terminal UI (29 screens),
session management, prompt history, public packages, security model,
error handling, logging, file utilities, configuration reference,
slash commands, keybindings, and development guide.