fix(web): soften two false claims for closed-beta honesty

Audit found two website claims with no backing implementation:
- '3 marketplace plugins included' (free tier) -> 'Plugin marketplace access
  (coming soon)'. The marketplace is not built; there are no free plugins.
- 'Connectors - day one' -> 'Connectors (rolling out)'. Only a few connectors
  are available; Slack is coming-soon, Gmail/Drive not yet shipped.

String-content only; elc syntax-checks clean. Three other audit flags (no-card
wording, crisis-line copy, post-quantum 'everything encrypted') intentionally
NOT touched - left for human review (sensitive / conflicting evidence).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/checkout.el

@@ -98,7 +98,7 @@ fn checkout_page(plan: String, pub_key: String) -> String {
         el_li("", "Persistent memory - never resets")
         + el_li("", "Local inference via Ollama (coming)")
         + el_li("", "Bring your own API keys")
-        + el_li("", "3 marketplace plugins included")
+        + el_li("", "Plugin marketplace access (coming soon)")
         + el_li("", "Core built-in capabilities")
         + el_li("", "2 devices included")
     } else {

src/marketplace.el

@@ -77,7 +77,7 @@ fn marketplace_categories() -> String {
 
     el_div(
         "class=\"marketplace-categories reveal\" style=\"transition-delay:320ms\"",
-        marketplace_tags_block("Connectors - day one", connectors) +
+        marketplace_tags_block("Connectors (rolling out)", connectors) +
         marketplace_tags_block("Following launch", following) +
         el_div(
             "",

src/pricing.el

@@ -36,7 +36,7 @@ fn pricing_free_features() -> String {
     el_li("", el_span("class=\"dash\"", "-") + el_span("", "Local inference via Ollama (coming)")) +
     el_li("", el_span("class=\"dash\"", "-") + el_span("", "Neuron Inference included when it launches - Q3 2026")) +
     el_li("", el_span("class=\"dash\"", "-") + el_span("", "Unlimited projects")) +
-    el_li("", el_span("class=\"dash\"", "-") + el_span("", "3 marketplace plugins included")) +
+    el_li("", el_span("class=\"dash\"", "-") + el_span("", "Plugin marketplace access (coming soon)")) +
     el_li("", el_span("class=\"dash\"", "-") + el_span("", "Core built-in capabilities"))
 }