Update released package guides, Salesforce installer, and headless APIs

[thedhanawada]

Summary

• Document verified published Core 2.5.7, Interface 1.9.0 and React/Vue 0.3.1 with complete snapshot, lazy recurrence, editor/read-only, lifecycle and migration contracts.
• Document the promoted Salesforce 0.3.0.1 installer and official production/sandbox links. Clearly retain its frozen Core 2.5.6 / Interface 1.9.0 bundle, optional permission scope, LWS requirement and verification limits.
• Explain current integrator-facing headless calendar APIs only: agents are authorized clients; the host owns persistence/users/access. No private prototype, backend roadmap or task/workflow promises.
• Add the missing public /api/search route and compiled-index regression checks.
• Patch the existing deployment stack without a major framework migration: Next 15.5.27, compatible transitive updates and PostCSS 8.5.28 override. Full npm audit reports zero findings at verification time.
• Correct outdated API/export, date, CSP, security and Locker claims. No new screenshot assets or private links.

Verification

• 54 MDX pages: internal routes/sections/navigation, public Core class coverage and content checks pass.
• Exact Quick Start and V2 named-zone DST examples run on four host zones against actual npm Core 2.5.7.
• Snapshot, clone/endTimeZone, throwing validation, all-day and iterator contract checks pass.
• TypeScript check and compiled search queries/no-result behavior pass.
• The exact final head and merged commit passed the full 59-route production build, dependency audit and compiled-search checks in GitHub CI. Merged commit: 165b386; production run 37005803657. Some local final-copy builds hit execution-resource kills; the clean CI builds passed.
• Full dependency audit: 0 findings. git diff --check passes.
• Protected Vercel preview access was not used. Production Vercel deployment succeeded. Public cloud-browser QA verified the intro/version table, Reader search results and result navigation, permissions, released installer links, current headless API scope, and footer credit/link; no application-origin console errors were observed.

Release facts

Core 2.5.7 release gitHead 5ab4dfe83000c81c885205858a427ba690e3e2f8 was checked against the published tarball. V2 named-zone correction retains legacy UTC metadata/conversion, moved-instance and ancient-date limits.

Salesforce 0.3.0.1 (04tg5000000ExTFAA0) was independently read back IsReleased=true. Clean install passed 32 Apex methods plus setup with 98% package / 99% test-run coverage and matching source/resource/permission readback. No production org installation is implied. Actual restricted-user browser validation remains open.

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Project	Deployment	Actions	Updated
docs	Ready	Preview	Oct 2, 2026 12:14pm UTC