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)

tasks/done/048-message-stream-refactor.md

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+# Task 048 - Message Stream & Tool Call Refactor
+
+## Goal
+Finish migrating the message stream container, tool call blocks, and reasoning UI to Tailwind utilities and shared tokens.
+
+## Prerequisites
+- Tasks 045-047 complete (message item, prompt input, and tabs refactored).
+
+## Acceptance Criteria
+- [ ] `src/components/message-stream.tsx`, `src/components/message-part.tsx`, and tool call subcomponents no longer depend on legacy classes (`.message-stream`, `.tool-call-message`, `.tool-call`, `.tool-call-header`, `.tool-call-preview`, `.tool-call-details`, `.reasoning-*`, `.scroll-to-bottom`, etc.).
+- [ ] Global CSS definitions for these selectors are removed from `src/index.css`, replaced by Tailwind utilities and token-aware helpers.
+- [ ] Scroll behavior (auto-scroll, “scroll to bottom” button) and collapsing/expanding tool calls behave as before in light/dark modes.
+- [ ] Markdown/code blocks continue to render properly within the new layout.
+
+## Steps
+1. Inventory remaining global selectors in `src/index.css` associated with the stream/tool-call UI.
+2. Update component markup to use Tailwind classes, creating shared helpers in `src/styles/components.css` when patterns repeat.
+3. Remove or rewrite the corresponding CSS blocks in `src/index.css` to avoid duplication.
+4. Validate tool call states (pending/running/success/error), reasoning blocks, and markdown rendering visually.
+
+## Testing Checklist
+- [ ] Run `npm run build`.
+- [ ] In dev mode, stream a message with tool calls and reasoning to ensure toggles and scroll helpers work.
+
+## Dependencies
+- Depends on prompt input and tab refactors to reduce merge conflicts.
+- Unlocks subsequent layout cleanups for logs and empty states.
+
+## Estimated Time
+1.25 hours
+
+## Notes
+- Branch suggestion: `feature/task-048-message-stream-refactor`.
+- Capture short screen recording or screenshots if tool call layout adjustments were required.
+- Legacy `message-stream.tsx` has since been replaced by `message-stream-v2.tsx` using the normalized message store.