feat: agent runs dashboard with tRPC API and React frontend

[zbigniewsobiecki]

Summary

• Full-stack dashboard for exploring agent runs, logs, LLM calls, and debug analyses
• tRPC v11 API with session-based auth, org-scoped data access, and end-to-end type safety
• React 19 frontend with Tailwind CSS v4, shadcn/ui theming, and TanStack Router
• 75 new unit tests (1000 total) covering all backend and frontend code
• Tees llmist agent logs to the main application logger with proper log levels

Backend

API (src/api/)

• tRPC setup with auth middleware (protectedProcedure rejects unauthenticated requests)
• Auth routers: auth.me query, POST /api/auth/login, POST /api/auth/logout
• Runs router: list (filtered/paginated/org-scoped), getById, getLogs, listLlmCalls, getLlmCall, getDebugAnalysis
• Projects router: list (org-scoped, for filter dropdowns)
• Session cookies (HTTP-only, 30-day expiry) with bcrypt password hashing
• Context creation reads cookie via getCookie(c, 'cascade_session') and resolves user

Database

• Migration 0006_users_and_sessions.sql: users and sessions tables with indexes
• Drizzle schema + repository (usersRepository.ts)
• New repository functions in runsRepository.ts: listRuns(), getLlmCallByNumber(), listLlmCallsMeta(), listProjectsForOrg()

Server (src/server.ts)

• Mounts tRPC via @hono/trpc-server at /trpc/*
• Auth routes at /api/auth/*
• Static file serving from dist/web/ with SPA fallback in production

Frontend (web/)

• Tech: React 19, Vite, Tailwind CSS v4 (@tailwindcss/vite), TanStack Router, tRPC client
• Login page: Email/password form calling /api/auth/login
• Runs list (/): Sortable table with filters (project, status, agent type, date range), pagination, auto-refresh for running sessions
• Run detail (/runs/:runId): Tabbed view — overview, logs (cascade/llmist toggle with search), LLM calls (expandable rows with lazy-loaded content), debug analysis

Other changes

• src/backends/adapter.ts: Tee llmist agent logWriter output to the main application logger with correct log levels (ERROR/WARN/DEBUG/INFO)
• CLAUDE.md: Updated with dashboard documentation, dev workflow, and user management instructions

Test plan

• All 1000 tests pass (69 test files)
• Lint clean (biome — 3 pre-existing complexity warnings only)
• TypeScript compiles clean (backend + frontend)
• Vite production build succeeds
• Pre-commit hooks pass (lint + typecheck)
• Pre-push hooks pass (full test suite)
• CI passes on push

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