chore(release): 1.1.0

- playout: run-scoped R2 manifest URIs (candidate a rewrite via rewriteManifestToRun)
- tests: playlist_rewrite_test.go (rewrite + publish integration + slate guard)
- docs: STREAMING, cloudflare-workers-setup, architecture (incl. Level-2 diagram)
- release housekeeping: TODO->DONE, CHANGELOG 1.1.0, version bump

.github/instructions/DONE.md

@@ -2,6 +2,13 @@
 
 > Completed tasks from [TODO](./TODO.md). Product, feature, and release history lives in [CHANGELOG](./CHANGELOG.md); this file keeps only engineering and ops notes not captured there.
 
+## Manifest run-scoped rewrite — candidate (a) (2026-09-03)
+
+- Playout now publishes the live R2 manifest with run-scoped media URIs. `rewriteManifestToRun` in `backend/playout/src/playlist.go` prefixes each bare relative URI (`seg-*.m4s` / `init.mp4`, plus `#EXT-X-MAP:URI`) with `r-{runID}/` before `publishManifest`'s atomic `.tmp` → `CopyObject` commit; skipped in slate mode. Added a stubbable `copyObject` hook for tests (consistent with `putObject`/`listObjects`/`deleteObjects`).
+- Tests: `playlist_rewrite_test.go` — `TestRewriteManifestToRun`, `TestRewriteManifestToRun_AlreadyPrefixedUnchanged`, `TestRewriteManifestToRun_HandlesTSAndComments`, `TestRewriteManifestToRun_EmptyRunID`, `TestIsMediaURI`, `TestPublishManifest_RewritesToRunScopedURIs`, `TestPublishManifest_SlateNotRewritten`.
+- Docs updated: `STREAMING.md`, `operations/cloudflare-workers-setup.md`, `architecture/README.md` (incl. Level-2 diagram showing the R2-bound `linearvoid-media` Worker and run-scoped layout).
+- **Still pending (in TODO): live Validation** — deploy the updated playout to the test lab and confirm manifest/segment URIs resolve via `media.linearvoid.tv`.
+
 ## Test infrastructure & refactors (2026-08-07)
 
 - Chat service `main.go` split into 8 packages (config, auth, db, handlers, ws, media, ratelimit, metrics); `db.RedisClient` + `db.PubSub` interfaces added for mocking.
@@ -37,3 +44,35 @@
 - Test in Firefox: live playback, rebuffer/recovery, chat sync; record quirks in `docs/STREAMING.md`
 - Rebuild + run playout; confirm `playlist.m3u8` lists ~12 segments at 2s each
 - Manual: verify viewer latency and cache-hit behavior after the change
+
+## Chat sidebar (2026-08-17)
+
+- [x] remove search bar from chat sidebar (not needed for single-room)
+- [x] remove "user" toggle button from chat sidebar (hide for now, add back when user interface is stable)
+- [x] make login/registration form a modal and only toggle it when user is not logged in and clicks "Login" or "Register"
+- [x] when user is logged in, do not show login/registration form
+- [x] make sure each message is only rendered once in the chat log (no duplicates on reconnect or initial load)
+
+### Plan
+
+Files: `frontend/index.html`, `frontend/src/main.ts`, `frontend/src/style.css`.
+
+1. **Remove search bar** (single-room)
+   - `index.html`: delete the `<div id="dm-search-row">` block.
+   - `main.ts`: remove `searchDM()` and the `dm-search-btn` listener; drop the `#dm-search-row` show/hide logic in `switchRoom()` (the `searchRow.hidden = !isDM` lines). Keep `currentDMTarget` only if the "New DM" flow stays.
+
+2. **Remove "Users" toggle button**
+   - `index.html`: delete the `<button id="users-toggle-btn">` button.
+   - `main.ts`: remove `toggleUserList()` and the `users-toggle-btn` listener; drop the now-unused `usersVisible` variable.
+
+3. **Login/registration form as a modal**
+   - `index.html`: wrap the `#auth-panel` form in a modal structure (`.auth-modal` + backdrop) with a close button.
+   - `style.css`: add `.auth-modal` / `.auth-modal-backdrop` styles.
+   - `main.ts`: add `openAuthModal()` / `closeAuthModal()`; change the `auth-toggle-btn` handler to open the modal (only when not authenticated) instead of toggling `#auth-panel` inline; wire a close/backdrop-click to `closeAuthModal()`.
+
+4. **Hide form when logged in**
+   - `main.ts` `updateAuthUI()`: when `authenticated` → hide the "Sign in" button and call `closeAuthModal()`; show the user label + "Sign out" button. When not authenticated → show "Sign in" and hide "Sign out".
+
+5. **No duplicate messages**
+   - `main.ts`: add `clearMessages()` (empties `#messages`) and call it at the top of `connectWebSocket()` so each (re)connect renders history fresh instead of appending.
+   - Fix the initial double-connect: make the initial `connectWebSocket("main")` wait for `refreshUserSession()` (or connect once with the resolved username) so history isn't pushed twice on load.