# HANDOFF — Session State

## Branch / Commit State

**`main`**, dirty working tree being committed as one unit (web source rendering fix — user-confirmed
working). **NOT pushed — user rule: never push without explicit instruction (2026-08-24).** No feature
branches pre-1.0: all work lands on `main` per work unit.

## The web-source rendering work (2026-08-28) — CURRENT MODEL: canvas-size viewport + content crop

**Root cause finally isolated:** hosting the page at the ELEMENT-box size clips full-bleed widgets
(designed for ~1920×1080) to their upper-left chunk inside a small viewport — "image truncated to
the upper-left corner regardless of scaling." That truncation persisted across every earlier
model because all of them rendered the page at the box (or a mix); e917c41's full 1920×1080
render was the only one that showed full content, and its letterbox dead space was purely the
display `Uniform` + the box aspect mismatch — not the render.

**The model (implemented, visual verification pending):**
- `Services/WebView2Manager.cs` — page renders at the MASTER CANVAS size (1920×1080), stable,
  never tracked: full-bleed widgets render FULL (no upper-left truncation); dragging the box never
  reflows the page; `overflow:hidden` (html+body) + transparent-bg injection. After each nav
  `QueryContentBoundsAsync` reads the page's real content rect
  (`scrollWidth/scrollHeight` vs `innerWidth/innerHeight`) and `CaptureFrame` **crops to the
  actual content bounds anchored at (0,0)**. Immediate capture on `NavigationCompleted`.
- `MainWindow.xaml` — web `<Image>` `Stretch="Fill"`: the cropped 1920×1080 frame maps flush under
  the box (Box == widget bounds at every size, pinned (0,0), no dead space).
- Invariants: **render at canvas size; crop to content; Fill to box.**

**Property panel / sliders (2026-08-28):** web URI ✕ clears the textbox; web ✓/✕ icon buttons
`IsTabStop="False"` so Tab walks X→Y→W→H→URI; Slider style `IsMoveToPointEnabled="True"`
restores click-anywhere-on-bar. All three confirmed fixed by the creator.

Build: 0 warnings; tests 4/4. Rejected for the record: box-sized viewport (upper-left truncation),
fixed 1920×1080 + `Uniform` (letterbox dead space), CSS margin/100% reset (enlarged gap),
viewport==box (reflow/truncation/scrollbars).

## Key facts / landmines

- **App running locks `ytLive.exe`** → build fails MSB3027 until creator exits the app.
- **Startup diagnostics:** unhandled exceptions + checkpoints go to `%APPDATA%\ytLlive\startup.log`
  (`Helpers/AppLog.cs`). On a silent startup crash, read that.
- **Pre-existing test failures (unrelated to web source, do not chase):**
  `AudioPipelineTests.Mix_HonorsProviderGains_AndGameMute_KillsTheLoopback` +
  `RoundClipInteractionTests.Round_Clip_Corner_Is_Grabbable_And_Shape_Is_Circle`.
- **Real-MainWindow tests MUST set `LayoutPathOverride`** — DB pollution wiped real data once.
- **Good Dog Rule:** ONE integration test per change; no new feature branches pre-1.0.
- **Scope Lock:** declare the file list, run `scripts/scope-check.sh` before every commit.
- **Every feature change ships memory updates in the SAME commit** — `TASKS.md` status + this file.
- No `CODING.md`; conventions live in `AGENTS.md` + `ai.md`.

## Next steps
1. AWAIT creator's verdict on viewport==box (geometry-agnostic) rendering — visual check with a
   widget URL at several box sizes; the selection frame must snap flush with no padding.
2. Follow-up only if the creator asks: graceful handling of navigation errors / invalid URIs (TASK 17 ×9).
3. Continue queue: TASK 18 local recording, TASK 21 media source, TASK 22 audio sync offset.