[WS4] Evaluate CodeNomad + remove oclite from fork

[randomm]

Parent: #158

Decision: Drop oclite, use built-in opencode web

TUI Alternative: Built-in Web UI ✅

The built-in opencode web command solves all our pain points:

• Performance: SolidJS + virtual scrolling (virtua) — no long-session sluggishness
• Full feature parity: same codebase as Desktop app, all session/tool/permission support
• Streaming: SSE + WebSocket, async task rendering included
• Remote access: --hostname 0.0.0.0 for LAN/mobile access
• Zero fork maintenance: it's upstream, we get improvements for free

# Basic usage
opencode web --port 4096

# With auth + remote access
OPENCODE_SERVER_PASSWORD=secret opencode web --hostname 0.0.0.0 --port 4096

Action: Delete all oclite files

• Delete packages/opencode/src/cli/lite/ (6 files)
• Delete packages/opencode/src/cli/ink/ (35 files)
• Delete script/build-lite.ts
• Remove any oclite-related config/entries
• Verify typecheck + tests pass after deletion

Alternatives Investigated & Rejected

• CodeNomad: GUI app (Electron/Tauri), not terminal. Low activity.
• chris-tse/opencode-web: 7 months stale, single contributor, prototype quality.
• FergusFettes/opencode-cli: Python CLI, 1 star, no streaming.
• Custom Go TUI: 3-5 day build effort, unnecessary given opencode web exists.

[randomm]

✅ Merged to dev. 42 oclite files deleted (2,409 lines removed). 65+ files total including tests.