docs(handoff): HANDOFF under the 40-line cap for the surge plan

HANDOFF.md

@@ -18,13 +18,12 @@
 
 ## Next action
 
-**Tomorrow, day 1 of the surge: the entitlement seam.** `IEntitlement` (`HasDlc`, `IsValid`), the
-Steam DLC implementation on `Steamworks.NET` behind it, a fake for tests, and `HasProOutput`
-consuming the interface instead of `IsPremium` directly. The Steam-less path must fall back to the
-free profile. Then the licence UI's four states against the fake.
+**Surge day 1: the entitlement seam.** `IEntitlement` (`HasDlc`, `IsValid`), the Steam DLC
+implementation on `Steamworks.NET` behind it, a fake for tests, and `HasProOutput` consuming the
+interface instead of `IsPremium`. Steam-less launch must fall back to the free profile; then the
+licence UI's four states against the fake.
 
-Full week in `TASKS.md` → "Surge week — coding only": day 2 greyed tiers, day 3 visibility picker,
-days 3–4 stream resilience, day 4 output contract, day 5 gold pass.
+Full week: `TASKS.md` → "Surge week — coding only" (days 1–5, sized 3–5 units each).
 
 ## Landmines
 
@@ -40,3 +39,4 @@ days 3–4 stream resilience, day 4 output contract, day 5 gold pass.
 - **No self-updater and no version banner**: Steam updates the app.
 - Pre-existing: the **full test suite hangs** (WASAPI teardown) — per-class runs; `ytLive.Tests`
   carries 3 xUnit warnings the app-only gate does not see; a red settings control is still a bug.
+- Not every hex is a theme colour — `BorderColorPalette`/chat defaults are USER DATA.