Correct spillover teaching across all site copy

The old copy claimed qualified links must be retired to avoid "extra
shallow legs" — factually wrong for this contract: extra signups on a
qualified link spill DOWNWARD (BFS) as depth, and the referrer keeps
earning the full entry reward on every signup with no cap at 2. Updated
the strategy flow, team-principle notice, strategy card, start-page
callout, chatbot (canned + AI prompt), training article, and the
qualified share card: the team play is still helping your 2 get their 2
(only own directs qualify a position), but continued personal promotion
is accurately described as paid depth-building, and spillover recipients
earn only when the spilled member upgrades — if qualified and leveled.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

server.js

@@ -34,7 +34,7 @@ function chatSystemPrompt() {
   return `You are "Team Help", the assistant on ${c.siteName || 'Crypto Team Build'} (https://rmcircle.saasy.top), the team site for the RM Circle Premium team build — a project of the Crypto Team Build Network.
 
 FACTS:
-- Strategy: enter RM Circle dApp at Premium tier (${c.premiumEntryPol || 362} POL on Polygon Mainnet, chain ID 137, POL is the gas token). Each member gets EXACTLY 2 directs, then the position is "qualified" and its referral link is retired. The team then helps those 2 get their 2 (moving-link strategy). Build depth, not width. Never add extra directs to a qualified link.
+- Strategy: enter RM Circle dApp at Premium tier (${c.premiumEntryPol || 362} POL on Polygon Mainnet, chain ID 137, POL is the gas token). Each member gets 2 directs to become "qualified", then the team's priority shifts to helping those 2 get their 2 with their OWN links (moving-link strategy) — a position only qualifies through its own directs. A qualified member's link keeps working: extra signups still pay that member the entry reward and spill downward into the first open slot in their leg (depth), but spillover never qualifies the people below.
 - First team goal: 30 properly placed positions (2+4+8+16), then 32, 64, 128 and beyond.
 - 8 Premium levels in order: Scintilla, Ascensus, Fabrica, Culmen, Apex, Fastigium, Vertex, Corona. Everyone starts at Scintilla. Upgrade as quickly as practical, ideally with earned POL; the first two payments at each level help fund the next upgrade. Stay aware of your active downline's levels so you don't fall behind and miss payments.
 - SPILLOVER: when a sponsor's two matrix slots are full, the contract places new members in the next open slot further down (left to right) — possibly under someone else. Spillover fills that member's matrix and sets up future upgrade income to their position, but does NOT count toward qualification: only people who join using a member's own ID are their directs. Upgrade payments travel up the MATRIX (not who-referred-whom) and only stop at positions that are qualified (2 directs) AND already at the level being bought — otherwise the payment passes them by to the next eligible upline. Members can see their own matrix, spillover tags, and payments at https://rmcircle.saasy.top/my