docs: pricing ruled — $10/mo + $400 lifetime, and the 15% fee is verified for subscriptions

Reconcile the pending doc edits with the creator's actual ruling, and close the
revenue-share question that was blocking the monthly price.

Verified from the App Developer Agreement v8.10 PDF itself (downloaded and
text-extracted, not a search excerpt). Section 6(b) has only three tiers:
6(b)(i) 15% for Apps and their In-App Products *not listed in* 6(b)(iii);
6(b)(ii) 12% Games-only; 6(b)(iii) 30% for Xbox console apps/games, Xbox
non-subscription IAP, and Windows 8/Phone 8. LlamaCasty is a Windows PC App,
so 6(b)(i) governs BOTH tiers -- there is no subscription surcharge. The
agreement's own changelog (v8.0, Oct 26 2017) states it outright: "implement
the 85/15 revenue share for non-Game subscriptions."

  => $10/mo nets $8.50 (~$102/yr); $400 lifetime nets $340.

Also confirmed: the 15% applies after VAT/GST (Net Receipts definition),
payouts are monthly above a $50 threshold, and no better small-indie rate
exists in the standard terms.

Creator ruling recorded: $10/mo subscription or $400 lifetime, no annual, no
.99. This supersedes the 2026-09-21 one-time $29 -> $49 model.

Two obligations ADA 6(h) attaches to the recurring tier, recorded because they
change its risk profile and are the reason lifetime is the hedge: we must
fulfil the subscription for the entire period as marketed (on breach Microsoft
may refund the full amount plus taxes in its sole discretion), and raising the
price disables auto-renew -- so $10 is effectively locked for the product's life.

Stale facts fixed in the same change rather than appended:
- research-store-certification.md: IARC was 11.11.1/11.11.2 in one table and
  10.11.1 in another; corrected to 10.11.x.
- research-store-certification.md: policy 10.8.1/10.8.2 still asserted "Polar
  explicitly permitted" and "tick the third-party purchase box". Void now that
  Store IAP is the route and Polar is being torn down.
- task-48: the working YouTube demo account (10.3.1) was accidentally dropped
  from the certification list during the Store-IAP edit. Restored -- a reviewer
  cannot use the app without one.
- MyMistakes.md: the verified-fact-vs-decided-outcome lesson now closes its
  loop (the creator did rule the way the research pointed), and records the
  over-correction that followed.

Docs-only. No code, no build, no tests.

TASKS.md

@@ -245,31 +245,39 @@ second encoder path needing a "redirect". Record+simulcast is one ffmpeg with tw
   entitlement and the branding-flash delta carry over unchanged**. The stale Polar product
   (`$99/yr`, id `d105dfa1-…`) is not reused — Store IAP products are declared in Partner
   Center instead.
-- **Pricing — ⏳ model re-opened 2026-09-27, subscription now the creator's lean.**
+- **Pricing — ✅ DECIDED 2026-09-27: `$10/mo` subscription, or `$400` lifetime. No annual.**
   `MONETIZATION.md` carries a **one-time perpetual** decision from 2026-09-21 (`$29` founder →
-  `$49` list) that explicitly superseded the old `$99/yr` subscription. The creator is moving
-  back toward a subscription, anchored on **Meld** (`$20/mo = $240/yr` entry — the only
+  `$49` list) that explicitly superseded the old `$99/yr` subscription. The creator ruled against
+  it and back to a subscription, anchored on **Meld** (`$20/mo = $240/yr` entry — the only
   competitor sharing our shape: streaming tool, subscription, YouTube-native). The creator's own
   read: **"XSplit only has legs because of their vcam product"** — its price is carried by a
   system-wide driver, and **virtual camera output is permanently out of product**, so XSplit is
   not a pricing comparator and its "lifetime ≈ 2x one year of sub" anchor is retired.
-  **Research that decides the tier shape (2026-09-27): Microsoft Store does not pro-rate.**
-  Pro-rated refunds on cancellation exist only in a narrow set of countries, and
-  **"monthly subscriptions and initial (pre-renewal) purchases aren't eligible for a prorated
-  refund"** — so a first-year annual subscriber who cancels loses the remaining months in most
-  countries, **and the developer cannot refund it**. That is verbatim the grievance the creator
-  raised, so it is exactly the trap to avoid. ⇒ **monthly, no annual tier.** Sources in
-  `MONETIZATION.md` → "No annual tier".
+  - **The finding that drove no-annual (2026-09-27): Microsoft Store does not pro-rate.**
+    Pro-rated refunds on cancellation exist only in a narrow set of countries, and
+    **"monthly subscriptions and initial (pre-renewal) purchases aren't eligible for a prorated
+    refund"** — so a first-year annual subscriber who cancels loses the remaining months in most
+    countries, **and the developer cannot refund it**. That is verbatim the grievance the creator
+    raised, so it is exactly the trap to avoid. Sources in `MONETIZATION.md` → "No annual tier".
   - ⛔ **Clean numbers, no `.99`** (creator ruling: *"Let's stop with the x.99 stuff - I find that
     irritating. Just say: ten bucks a month"*). The `$x.99` convention only makes a price *look*
     cheaper and is incoherent for a brand sold on honesty and no-dark-patterns. `MONETIZATION.md`
     → "Clean numbers".
-  - ⛔ **No feature gating, ever** — this is now a *revenue* argument: the free tier's reach is
-    the funnel and the branding flash is an ad running inside other people's content, so
-    crippling free cannibalises the only acquisition channel we have.
-  - ⏳ Still open: the exact number; whether to also sell a **lifetime** product (~$300, the hedge
-    against the no-moat renewal problem and the natural home for subscription-hostile buyers);
-    and the **unverified Store revenue-share rate** — confirm the net, not the list.
+  - **No feature gating** — pre-existing repo posture (TASK 36 monetization stance: free gets
+    everything, the branding flash is the only paid delta), noted here because it gains a
+    **revenue** argument: the free tier's reach is the funnel and the flash is an ad running
+    inside other people's content. Not a new ruling.
+  - ✅ **Store revenue share — VERIFIED 15%, subscriptions included.** From the ADA v8.10 PDF
+    itself, §6(b)(i): 15% applies to "any Apps (and any In-App Products in such Apps) that are
+    not listed in Section 6(b)(iii)". LlamaCasty is a Windows PC App — not a Game, not Xbox
+    console, not Windows 8 — so **15% governs both tiers; there is no subscription surcharge.**
+    The agreement's own changelog (v8.0, Oct 26 2017) says it outright: *"implement the 85/15
+    revenue share for non-Game subscriptions."* ⇒ **`$10/mo` nets `$8.50`; `$400` nets `$340`.**
+  - ⛔ **Two obligations the subscription creates (ADA §6(h))**, which drive the lifetime tier's
+    value as a hedge: (1) we must **fulfil the subscription for the whole period as marketed**,
+    and on breach Microsoft may refund *"the full amount, plus taxes... in Microsoft's sole
+    discretion"*; (2) **raising the price disables auto-renew**, so `$10` is effectively locked
+    for the product's life.
 - **TASK 49 — chat profanity filter** — queued, not blocked, size S. Local, on-device,
   **non-persistent**, opt-in, **user-supplied word list (never a hardcoded slur list)**, and it
   must **never match the SuperChat amount or reward fields** (financial data, Store 10.5.5).