diff --git a/.env.example b/.env.example
index 440d185e..e2b6fa9e 100644
--- a/.env.example
+++ b/.env.example
@@ -40,11 +40,6 @@ BETTER_AUTH_SECRET=change-me-to-a-random-32-char-string
 BETTER_AUTH_URL=http://localhost:14242
 
 
-# ─── Web App (Next.js) ───────────────────────────────────────────────────────
-# Public gateway URL — accessible from the browser, not just the server.
-NEXT_PUBLIC_GATEWAY_URL=http://localhost:14242
-
-
 # ─── OpenTelemetry ───────────────────────────────────────────────────────────
 # OTLP HTTP endpoint (otel-collector or any OpenTelemetry-compatible backend)
 OTEL_EXPORTER_OTLP_ENDPOINT=http://localhost:4318
diff --git a/docs/_old_structure/guides/admin-guide.md b/docs/_old_structure/guides/admin-guide.md
index ed9d2a9d..3aa73225 100644
--- a/docs/_old_structure/guides/admin-guide.md
+++ b/docs/_old_structure/guides/admin-guide.md
@@ -376,9 +376,8 @@ Session cleanup is scoped to one session identifier and only removes that sessio
 
 ### Web App
 
-| Variable                  | Default                  | Description                            |
-| ------------------------- | ------------------------ | -------------------------------------- |
-| `NEXT_PUBLIC_GATEWAY_URL` | `http://localhost:14242` | Gateway URL used by the Next.js client |
+The web app uses origin-relative paths only; it needs no gateway URL variable.
+(`NEXT_PUBLIC_GATEWAY_URL` is obsolete and no longer read by anything.)
 
 ### Coordination
 
diff --git a/docs/webui/PHASE-P-STRUCTURE.md b/docs/webui/PHASE-P-STRUCTURE.md
index 176f9517..4e2cb77d 100644
--- a/docs/webui/PHASE-P-STRUCTURE.md
+++ b/docs/webui/PHASE-P-STRUCTURE.md
@@ -1,7 +1,7 @@
 # WebUI Phase P — File / Folder Structure & Migration Map
 
-> **Status:** living document — first pass. Structure and increment status are verified against
-> `next` as of merge `8c27024d`. Details (per-surface component inventories, exact route tables,
+> **Status:** living document. Structure and increment status are verified against `next` as of
+> merge `3bd490c0` (2026-08-26). Details (per-surface component inventories, exact route tables,
 > test matrices) are still being fleshed out; extend the stub sections below rather than rewriting
 > the verified structure.
 
@@ -29,7 +29,8 @@ apps/web/
     ├── routes.tsx                 # ── SPA React Router route table
     ├── spa/                       # ── NEW SPA surfaces
     │   ├── guards.tsx             #    guest / authenticated route guards
-    │   ├── pages/                 #    login, register, sso-callback (P2); chat + error boundary (P3)
+    │   ├── pages/                 #    login, register, sso-callback (P2); chat + error boundary (P3);
+    │   │                          #    projects, project-detail, tasks (P4-1)
     │   └── chat/                  #    P3 typed chat: use-chat-connection, commands-panel,
     │                              #    session-panel, message-transcript, tool-call-list, composer
     │
@@ -80,14 +81,14 @@ build path is retired.
 
 ## 5. Increment map (P1–P6)
 
-| #      | Increment                                                                                                                                      | Branch                        | Status                    |
-| ------ | ---------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------- | ------------------------- |
-| **P1** | Vite + React Router skeleton beside Next (entry, router, guards, vitest)                                                                       | `feat/webui-p1-vite-skeleton` | ✅ merged — PR **#1143**  |
-| **P2** | SPA data layer + same-origin auth (login/register/SSO pages, guards, relative api/socket/auth-client)                                          | `feat/webui-p2-data-auth`     | ✅ merged — PR **#1144**  |
-| **P3** | Typed SPA **chat** (`spa/chat/*`, `chat-contract.ts`, chat page + error boundary)                                                              | `feat/webui-p3-chat`          | 🚧 in progress (unmerged) |
-| **P4** | Port **projects / tasks / settings / admin** dashboard surfaces into the SPA                                                                   | _tbd_                         | ⏳ not started            |
-| **P5** | **Cutover**: Gateway serves the Vite `dist` on `:14242`; flip `dev`/`build` to vite; **remove** the legacy Next `app/` tree + `next.config.ts` | _tbd_                         | ⏳ not started            |
-| **P6** | CI / images (trails): build the SPA in CI, ship images                                                                                         | _tbd_                         | ⏳ trails                 |
+| #      | Increment                                                                                                                                      | Branch                        | Status                                                                                         |
+| ------ | ---------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------- | ---------------------------------------------------------------------------------------------- |
+| **P1** | Vite + React Router skeleton beside Next (entry, router, guards, vitest)                                                                       | `feat/webui-p1-vite-skeleton` | ✅ merged — PR **#1143**                                                                       |
+| **P2** | SPA data layer + same-origin auth (login/register/SSO pages, guards, relative api/socket/auth-client)                                          | `feat/webui-p2-data-auth`     | ✅ merged — PR **#1144**                                                                       |
+| **P3** | Typed SPA **chat** (`spa/chat/*`, `chat-contract.ts`, chat page + error boundary)                                                              | `feat/webui-p3-chat`          | ✅ merged — PR **#1151** (+ repair PR **#1154**)                                               |
+| **P4** | Port **projects / tasks / settings / admin** dashboard surfaces into the SPA                                                                   | `feat/webui-p4-1`             | 🚧 in progress — P4-1 (read-only projects + tasks) merged, PR **#1153**; settings/admin remain |
+| **P5** | **Cutover**: Gateway serves the Vite `dist` on `:14242`; flip `dev`/`build` to vite; **remove** the legacy Next `app/` tree + `next.config.ts` | _tbd_                         | ⏳ not started                                                                                 |
+| **P6** | CI / images (trails): build the SPA in CI, ship images                                                                                         | _tbd_                         | ⏳ trails                                                                                      |
 
 Each increment follows the same delivery pipeline: brief traceable to the RFC → author →
 **independent** integrator verification (build+test+typecheck+lint) → **independent** code + security