v0.4.1 — Playtomic API migration & Lite connector

Fixes

Playtomic connectors restored. Playtomic moved its API to api.app.playtomic.io (dropping the /api prefix) and closed anonymous access around 2026-07-31, which broke both shipped Playtomic connectors — old paths returned 404, and the previously-public club-search/availability endpoints now return 401 without a Bearer token.

• playtomic (full, 13 tools) — repointed baseUrl + loginUrl to the new host, dropped /api from all tool paths. The LOGIN_TOKEN email+password → JWT flow was already correct.
• playtomic-public → "Playtomic (Lite)" — converted from authType: NONE to LOGIN_TOKEN. The 4 read-only tools (club search, club details, availability, sport configuration) now require a free Playtomic account (PLAYTOMIC_EMAIL + PLAYTOMIC_PASSWORD) — no API key, no club membership. Generic pricing preserved.
• Removed playtomic-public from the zero-credential onboarding demo (it now requires login).

Notes

• Auth uses the Bearer token alone — verified end-to-end against a real account (login + all data/personal endpoints return 200). No User-Agent / X-Requested-With spoofing. The existing LOGIN_TOKEN engine handles login, encrypted token caching, and refresh.
• Website guides/marketplace copy updated separately to reflect the free-account requirement.

Verification: backend lint/typecheck/test/build green (PR #468); Playtomic conformance specs 10/10.