Two follow-ups to 0.87.2 + 0.87.3 from the adversarial review:
1. **CSRF cookie-ride.** Bearer-bypass branch checked Authorization
header presence only — an attacker page could mint `Authorization:
Bearer junk` and ride the still-attached session cookie. Bypass now
requires bearer AND no cookie. Drive the cookie-name comparison off
`SESSION_COOKIE_NAME` and split on `=` (not prefix).
2. **`require_can_edit` admin path open to bearer.** Now reads admin
authority off an `Option<CurrentSessionUser>` extractor — None on
bearer-only requests. Owner-match path still accepts bearer; admin
path is cookie-gated.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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