v0.5.0: NomadArch - Binary-Free Mode Release

Features:
- Binary-Free Mode: No OpenCode binary required
- NomadArch Native mode with free Zen models
- Native session management
- Provider routing (Zen, Qwen, Z.AI)
- Fixed MCP connection with explicit connectAll()
- Updated installers and launchers for all platforms
- UI binary selector with Native option

Free Models Available:
- GPT-5 Nano (400K context)
- Grok Code Fast 1 (256K context)
- GLM-4.7 (205K context)
- Doubao Seed Code (256K context)
- Big Pickle (200K context)

AGENTS.md

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+# AGENT NOTES
+
+## Styling Guidelines
+- Reuse the existing token & utility layers before introducing new CSS variables or custom properties. Extend `src/styles/tokens.css` / `src/styles/utilities.css` if a shared pattern is needed.
+- Keep aggregate entry files (e.g., `src/styles/controls.css`, `messaging.css`, `panels.css`) lean—they should only `@import` feature-specific subfiles located inside `src/styles/{components|messaging|panels}`.
+- When adding new component styles, place them beside their peers in the scoped subdirectory (e.g., `src/styles/messaging/new-part.css`) and import them from the corresponding aggregator file.
+- Prefer smaller, focused style files (≈150 lines or less) over large monoliths. Split by component or feature area if a file grows beyond that size.
+- Co-locate reusable UI patterns (buttons, selectors, dropdowns, etc.) under `src/styles/components/` and avoid redefining the same utility classes elsewhere.
+- Document any new styling conventions or directory additions in this file so future changes remain consistent.
+
+## Coding Principles
+- Favor KISS by keeping modules narrowly scoped and limiting public APIs to what callers actually need.
+- Uphold DRY: share helpers via dedicated modules before copy/pasting logic across stores, components, or scripts.
+- Enforce single responsibility; split large files when concerns diverge (state, actions, API, events, etc.).
+- Prefer composable primitives (signals, hooks, utilities) over deep inheritance or implicit global state.
+- When adding platform integrations (SSE, IPC, SDK), isolate them in thin adapters that surface typed events/actions.
+
+## Tooling Preferences
+- Use the `edit` tool for modifying existing files; prefer it over other editing methods.
+- Use the `write` tool only when creating new files from scratch.