Function buildUserDelta

buildUserDelta(
    ctx: SessionContext,
    content: string,
    opts?: { tools?: string },
): number[]
Build a token delta for a user turn

Composes getTurnSeparator() + formatChatSync() + tokenizeSync() into a single token array suitable for branch.prefill(). Usable with any branch — not tied to Session's trunk.

This is the canonical way to build a user-turn delta for warm prefill in multi-turn conversations.
Parameters
- ctx: SessionContext
  Active session context
- content: string
  User message content
- opts: { tools?: string } = {}
  Optional tools JSON for tool-aware formatting
Returns number[]
Token array ready for branch.prefill()
- Defined in sdk/src/deltas.ts:20