* [workflow o11y] rebase on latest main and keep targeted UI/builders changes
Rebase the branch intent onto latest main by preserving web-shared UI refactors and builders base-builder updates while taking main for hydration and data-fetching behavior elsewhere.
Co-authored-by: Cursor <cursoragent@cursor.com>
* [workflow o11y] align web-shared hydration revivers with main
Revert the hydration reviver delta for URL, URLSearchParams, and Headers so web-shared matches main behavior while keeping the targeted UI/builders-only scope on this branch.
Co-authored-by: Cursor <cursoragent@cursor.com>
* [workflow o11y] restore PR #1017 detail-panel decoupling
Bring the web-shared trace/detail panel files back in sync with main so PR #1017 behavior is preserved and not regressed on this branch.
Co-authored-by: Cursor <cursoragent@cursor.com>
* [workflow o11y] restore PR #1018 react-inspector sidebar updates
Bring web-shared o11y rendering files back in sync with main so ObjectInspector-based sidebar rendering and related UI behavior from PR #1018 remain intact on this branch.
Co-authored-by: Cursor <cursoragent@cursor.com>
* [workflow o11y] keep custom viewers and apply inspector rendering
Preserve the branch-specific event list and stream viewer UX while applying react-inspector rendering to payload/chunk data so complex hydrated values render correctly without reverting custom UI behavior.
Co-authored-by: Cursor <cursoragent@cursor.com>
* [workflow o11y] trace viewer UX improvements and Geist alignment
- Add live tick animation, context menu, and cancel run support from PR #984
- Decouple side panel styling to use Geist design tokens (inline styles)
- Fix sleep span detail panel showing events instead of wait entity attributes
- Fix stream viewer flickering by removing unstable object deps
- Remove Chunks/Output toggle from stream viewer, show only chunks
- Add resolve hook modal, wake-up sleep, and cancel run plumbing
- Add loading skeleton for stream viewer
Co-authored-by: Cursor <cursoragent@cursor.com>
* Bug fixes
* Bug fixes
* Bug fixes
* Bug fixes
* Bug fixes
* Bug fixes
* Bug fixes
* Bug fixes
* Bug fixes
* Bug fixes
---------
Co-authored-by: Cursor <cursoragent@cursor.com>
## Summary
Split the serialization/deserialization logic into environment-specific layers so data hydration can happen client-side in the browser. This is a prerequisite for e2e encryption where decryption keys are only available in the browser.
## Architecture
### Layer 1: `@workflow/core/serialization-format` (new, browser-safe)
- Format prefix encoding/decoding (`devl`, future `encr`, etc.)
- Generic `hydrateData()` dispatch — handles Uint8Array (v2 binary), legacy arrays (v1), and plain values
- `hydrateResourceIO(resource, revivers)` resource-type dispatcher (step/hook/event/workflow field mapping)
- `ClassInstanceRef` (plain data class, no `node:util` dependency)
- `StreamRef`, type guards (`isStreamRef`, `isStreamId`, `isClassInstanceRef`), utility functions (`extractStreamIds`, `truncateId`)
- Shared `observabilityRevivers` for stream/class/step display overrides
- 36 unit tests covering all of the above
### Layer 2: Environment-specific revivers
- **`@workflow/web-shared`** (`lib/hydration.ts`) — browser-safe revivers using `atob()` for base64, real `URLSearchParams`/`Headers`/`URL` instances, `ClassInstanceRef` for UI rendering
- **`@workflow/cli`** (`lib/inspect/hydration.ts`) — Node.js revivers using `Buffer.from()` for base64, `CLIClassInstanceRef` with `util.inspect.custom` for CLI output
Each module exports a pre-bound `hydrateResourceIO(resource)` that uses its environment's revivers.
### Removed: `@workflow/core/observability`
- Deleted `observability.ts` and `observability.test.ts` entirely (no remaining consumers)
- Removed `"./observability"` export from `@workflow/core/package.json`
- Removed the `workflow` package's `internal/observability.ts` re-export
- All functionality has been split between `serialization-format.ts` (shared types/utilities) and the environment-specific hydration modules
## Web package changes
- Server passes raw world data through without hydration (CBOR preserves `Uint8Array`)
- Client calls `hydrateResourceIO` from `@workflow/web-shared` after receiving CBOR-decoded data
- No Vite `node:*` stubs needed since `@workflow/core/serialization-format` is browser-safe
- Optimized: event hydration finds the matching event before hydrating (instead of hydrating all)
- Reduced server log noise from handled API errors (4xx errors no longer logged)
## Packages affected
- `@workflow/core` — new `serialization-format` export (with tests), removed `observability` export
- `@workflow/web-shared` — new `lib/hydration.ts` with browser-safe revivers
- `@workflow/cli` — new `lib/inspect/hydration.ts` with Node.js revivers, updated `output.ts` import
- `@workflow/web` — client-side hydration, removed server-side hydration
- `workflow` — removed `internal/observability.ts` re-export
## Summary
- Replace Next.js App Router with React Router v7.13.0 framework mode (Vite-based), eliminating the large `next` dependency from the web, CLI, and workflow metapackages
- Serve the web UI in-process from the CLI via Express instead of spawning `next start` as a child process
- Switch RPC transport from JSON to CBOR to preserve binary data types across the wire
- Replace `nuqs` URL state management with React Router's `useSearchParams`
- Replace Next.js server actions with an RPC resource route (`/api/rpc`) and a thin CBOR-based client
## Motivation
The `next` package is ~300MB installed and was the single largest dependency in the monorepo. It also required spawning a separate child process from the CLI to run the o11y web server, adding complexity around process lifecycle management, port readiness polling, and environment variable forwarding.
With React Router framework mode, the web package builds to a standard Express-compatible server bundle that the CLI can import and serve directly in its own process.
## What changed
**Framework swap (`@workflow/web`):**
- `next.config.ts` / `postcss.config.mjs` → `react-router.config.ts` / `vite.config.ts`
- `src/` directory → `app/` directory (React Router convention)
- `src/app/layout.tsx` + `layout-client.tsx` → `app/root.tsx`
- `src/app/page.tsx` → `app/routes/home.tsx`
- `src/app/run/[runId]/page.tsx` → `app/routes/run-detail.tsx`
- Path alias `@/` → `~/`
- Removed all `'use client'` / `'use server'` directives
**Data transport:**
- Server actions → RPC resource route at `/api/rpc` with CBOR encoding
- CBOR preserves `Uint8Array` and other binary types natively (no base64 overhead)
- Stream reading → dedicated `/api/stream/:streamId` resource route
**URL state:**
- `nuqs` (`useQueryState`) → `useSearchParams` from `react-router`
**Fonts:**
- `next/font/google` → Geist `.woff2` files referenced directly from `node_modules/geist` via `@font-face` in CSS
**CLI integration (`@workflow/cli`):**
- `import('@workflow/web/server').then(m => m.startServer(port))`
- No child process, no readiness polling, no cleanup handlers
**Radix UI compatibility:**
- `onSubmit` preventDefault on `AlertDialogContent` and `SheetContent` to prevent Radix's internal `<form method="dialog">` from triggering React Router route actions
- Catch-all action on root route for any stray POSTs
## Dependencies removed
- `next`, `swr`, `nuqs`, `@tailwindcss/postcss`
## Dependencies added
- `react-router` / `@react-router/dev` / `@react-router/node` / `@react-router/express` (all `7.13.0`)
- `express`, `vite`, `@tailwindcss/vite`, `cbor-x`, `isbot`, `cross-env`
- `geist` (devDep)
Ali Waleed