Real claude-cli/2.1.220 auto-mode classifier requests carry two system
entries: the security-monitor prompt plus an appended session-context
block. The previous len(systemEntries) != 1 guard rejected them before
any content check ran, so claude_code_only groups kept refusing the
classifier (#5152, follow-up to #5041/#5048).
Scan every entry for the monitor prompt instead of requiring exactly
one. Discrimination is unchanged: the matching entry still needs the
10k-char minimum, the fixed prefix, and all eight markers.
Real claude-cli/2.1.220 samples insert <category>...</category> between
</block> and <reason>, breaking the previous literal marker.
Also fix an unchecked type assertion in the test suite.
Genuine Claude Code CLI sub-requests (e.g. the security monitor) carry
no identity system prompt, so claude_code_only groups wrongly rejected
them with "this group only allows Claude Code clients". Detect the
x-anthropic-billing-header block with cc_entrypoint=cli as a stable
client signal, while keeping the existing header/metadata checks.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
- Add claude_code_only field to restrict groups to Claude Code clients only
- Add fallback_group_id for non-Claude Code requests to use alternate group
- Implement ClaudeCodeValidator for User-Agent detection
- Add group-level session binding isolation (groupID in Redis key)
- Prevent cross-group sticky session pollution
- Update frontend with Claude Code restriction controls
shaw