Track the join funnel end-to-end through the self-enroll page

- Self-enroll pageviews now tracked as the "joinnow" event (track.js loaded
  on the page; server whitelist + admin tiles/columns extended)
- A confirmed on-chain registration in the wallet-connect flow now auto-posts
  to the submit-id API, so every self-enroll join records a submission with
  source + clickid attribution and fires the purchase event and BeMob postback
  with no manual ID entry
- Optional name/handle field on the join page feeds the submission and the
  team Telegram alert
- Admin Traffic panel: Join-now views tile, Join-now -> Confirmed conversion,
  and a per-source Confirmed column for campaign-level ROI reading

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

public/admin.html

@@ -2,7 +2,7 @@
 <section id="loginView" class="login-panel"><div class="brand" style="margin-bottom:22px"><div class="brand-mark">RM</div><span>RM Circle<small>Sponsor Router Admin</small></span></div><h1>Team Admin</h1><p>Manage the current sponsor, qualification queue, and onboarding settings.</p><form id="loginForm"><div class="field"><label for="password">Admin password</label><input id="password" class="input" type="password" autocomplete="current-password" required></div><button class="btn btn-primary" style="width:100%">Sign in</button><div id="loginError" class="micro" style="color:var(--danger)"></div></form></section>
 <section id="adminView" class="admin hidden"><div class="admin-top"><div><div class="eyebrow">Sponsor router</div><h1>RM Circle Team Build Admin</h1></div><div class="nav-actions"><a class="btn btn-secondary" href="/start" target="_blank">View Live Page ↗</a><button id="logoutBtn" class="btn btn-secondary">Log out</button></div></div>
 <div class="admin-grid"><div class="stack"><div class="table-card"><div style="display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:12px"><div><h2 style="margin:0">Sponsor Queue</h2><p style="color:var(--muted);margin:4px 0 0;font-size:13px">Mark a sponsor qualified to automatically activate the next waiting position.</p></div></div><div class="table-wrap"><table class="table"><thead><tr><th>Order</th><th>Sponsor</th><th>Parent</th><th>Directs</th><th>Level</th><th>Status</th><th>Clicks</th><th>Actions</th></tr></thead><tbody id="sponsorRows"></tbody></table></div></div>
-<div class="table-card"><div style="margin-bottom:12px"><h2 style="margin:0">Traffic &amp; Conversions</h2><p style="color:var(--muted);margin:4px 0 0;font-size:13px">First-touch source per visitor session (referring domain or utm_source). Funnel: bridge page → start page → join click.</p></div><div id="funnelStats" class="funnel"></div><div class="table-wrap"><table class="table"><thead><tr><th>Source</th><th>Bridge views</th><th>Start views</th><th>Training views</th><th>Invite views</th><th>Join clicks</th><th>Start → Join</th></tr></thead><tbody id="trafficRows"></tbody></table></div></div>
+<div class="table-card"><div style="margin-bottom:12px"><h2 style="margin:0">Traffic &amp; Conversions</h2><p style="color:var(--muted);margin:4px 0 0;font-size:13px">First-touch source per visitor session (referring domain or utm_source). Funnel: bridge page → start page → join click.</p></div><div id="funnelStats" class="funnel"></div><div class="table-wrap"><table class="table"><thead><tr><th>Source</th><th>Bridge views</th><th>Start views</th><th>Training views</th><th>Invite views</th><th>Join-now views</th><th>Join clicks</th><th>Confirmed</th><th>Start → Join</th></tr></thead><tbody id="trafficRows"></tbody></table></div></div>
 <div class="table-card"><div style="margin-bottom:12px"><h2 style="margin:0">Member ID Submissions</h2><p style="color:var(--muted);margin:4px 0 0;font-size:13px">New members who confirmed their purchase on the start page. Each one was posted to your Hermes Telegram chat — add them to the rotation.</p></div><div class="table-wrap"><table class="table"><thead><tr><th>When</th><th>Name / Handle</th><th>New ID</th><th>Joined under</th><th>Source</th><th>On-chain</th></tr></thead><tbody id="submissionRows"></tbody></table></div></div>
 <div class="table-card"><div style="display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:12px;flex-wrap:wrap"><div><h2 style="margin:0">Your Organization vs. the Network</h2><p style="color:var(--muted);margin:4px 0 0;font-size:13px">How your team — rooted at your top ID — stacks up against the entire RM Circle smart contract. Live on-chain.</p></div><form id="orgShareForm" style="display:flex;gap:8px"><input id="orgRoot" class="input" style="max-width:110px" placeholder="21" inputmode="numeric"><button class="btn btn-secondary btn-sm">Refresh</button></form></div><div id="orgShare"><div class="empty">Reading the blockchain…</div></div></div>
 <div class="table-card"><div style="margin-bottom:12px"><h2 style="margin:0">My Positions — Income</h2><p style="color:var(--muted);margin:4px 0 0;font-size:13px">Every payment received by your own positions, live from the contract. Comma-separated IDs — saved for next time.</p></div><form id="incomeForm" style="display:flex;gap:8px;margin-bottom:14px;flex-wrap:wrap"><input id="incomeIds" class="input" style="max-width:260px" placeholder="21,24,25" inputmode="numeric"><button class="btn btn-teal">Load</button></form><div id="incomeAlert"></div><div id="incomeRouting" style="margin-bottom:14px"></div><div id="incomeSummary" class="facts" style="grid-template-columns:repeat(4,1fr);margin-bottom:12px"></div><div id="incomeResult"></div></div>