Add multi-tenant cloud mode: self-serve purchase, credit metering, core-decoupling

Introduces RECAP_MODE=multi alongside single-mode self-host:
- Tenant auth + accounts (magic-link via System SMTP), per-tenant credit pool,
  anonymous trial minting with per-IP/-64 caps
- Self-serve Pro/Max purchase: inline Lightning (BTCPay) + card (Zaprite),
  prepaid 30-day periods, expiry-reminder emails
- Core-decoupling: relay owns cloud tier/expiry keyed by Recaps user-id
- SQLite (better-sqlite3) schema for multi-mode; filesystem unchanged for single
- StartOS actions/versions through 0.2.155

startos/actions/index.ts

@@ -7,10 +7,22 @@ import { setOpenAIApiKey } from './setOpenAIApiKey'
 import { setOpenAICompatible } from './setOpenAICompatible'
 import { setOllamaUrl } from './setOllamaUrl'
 import { setWhisperEndpoint } from './setWhisperEndpoint'
+import { setPodcastIndex } from './setPodcastIndex'
+import { enableMultiTenantMode } from './enableMultiTenantMode'
+import { setRecapPublicUrl } from './setRecapPublicUrl'
+import { setTenantDefaultCredits } from './setTenantDefaultCredits'
+import { setTrialCreditsPerVisitor } from './setTrialCreditsPerVisitor'
+import { setTrialsPerIpPerDay } from './setTrialsPerIpPerDay'
+import { setReplenishPeriod } from './setReplenishPeriod'
+import { setRelayOperatorKey } from './setRelayOperatorKey'
 
 // NOTE: setRelayUrl was removed in 0.2.34. The relay base URL is now
 // hardcoded in server/relay-default.js and updated via Recap version
 // releases — end users should never see or configure it.
+//
+// Multi-tenant cloud-mode actions (added 0.2.77) — these only matter
+// when recap_mode === 'multi'. In single mode they're inert: the
+// fields they manipulate exist in the config but nothing reads them.
 export const actions = sdk.Actions.of()
   .addAction(setApiKey)
   .addAction(setAnthropicApiKey)
@@ -18,5 +30,13 @@ export const actions = sdk.Actions.of()
   .addAction(setOpenAICompatible)
   .addAction(setOllamaUrl)
   .addAction(setWhisperEndpoint)
+  .addAction(setPodcastIndex)
   .addAction(setLicense)
   .addAction(setAdminPassword)
+  .addAction(enableMultiTenantMode)
+  .addAction(setRecapPublicUrl)
+  .addAction(setTenantDefaultCredits)
+  .addAction(setTrialCreditsPerVisitor)
+  .addAction(setTrialsPerIpPerDay)
+  .addAction(setReplenishPeriod)
+  .addAction(setRelayOperatorKey)